This is information on a product in full production.
September 2015 DocID10990 Rev 13 1/20
L9911
Car alternator multifunction smart voltage regulator
Datasheet - production data
Features
Fully monolithic design
High side field driver
Thermal protection
Field short circuit protection
Protected diagnostic lamp driver
Protected high side relay driver
Complex diagnostics
Load response control
DFM output (field monitor)
Self start function
Description
The L9911 is a monolithic multifunction alternator
voltage regulator intended for use in automotive
application.
It includes the control section, the field power
stage, fault diagnostic circuit which drives a
warning lamp, and the protection against short
circuits
'!0'03
Multiwatt8
Table 1. Device summary
Order code Temp. range, °C Package Packing
L9911F
Tj = -40 to +150 Multiwatt8 Tube
L9911I
L9911P
L9911V
L9911K
L9911U
www.st.com
Contents L9911
2/20 DocID10990 Rev 13
Contents
1 Circuit operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Voltage regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Load response control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Self start function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Principle of phase regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Multiwatt 8 (pin 5 GND) package information . . . . . . . . . . . . . . . . . . . . . . 17
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DocID10990 Rev 13 3/20
L9911 List of tables
3
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 6. Load response control parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. Load response control timing options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 8. Correspondence of frequency (typical values) to application features . . . . . . . . . . . . . . . . 11
Table 9. Customization of L9911: combination of LRC, regulation, and application options . . . . . . 11
Table 10. Fault detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 11. Multiwatt 8 (pin 5GND) package mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 12. Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
List of figures L9911
4/20 DocID10990 Rev 13
List of figures
Figure 1. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Vreg-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 3. Vreg-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 4. Vreg-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. Vreg-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 6. Output voltage rise/fall time (F+, DFM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Phase regulation characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8. Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 9. High side/low side driver saturation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 10. Test mode to cancel soft-start/attack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 11. Soft-start enable frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 12. Soft-start characteristics (always activated at engine start) . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 13. Soft start/attack characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 14. DF monitor electrical configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 15. Short circuit drivers' protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 16. Multiwatt 8 (pin 5GND) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DocID10990 Rev 13 5/20
L9911 Circuit operation
19
1 Circuit operation
The alternator's voltage regulator performs the following main functions:
1. voltage regulation
2. protection
3. control fault diagnosis
4. load response control
1.1 Voltage regulation
The alternator voltage is compared with a reference voltage in an amplifier, whose output
determines the switching frequency of output power MOS whose current excites the coil of
the alternator; as the regulator is in fixed-frequency topology, the field switching frequency
does not depend on the alternator characteristics. The regulators have an integrated filter in
the voltage sensing path guaranteeing the correct behaviour of the devices also when the
rectifier diodes feature very high switching spikes. The internal filtering allows the usage of
the device also with very long cables connecting the alternator to the battery with an
impedance so high to cause a superimposed ripple on the alternator voltage higher than 5-
6 V. Consequently it doesn't need, in the standard application, any external component.
Anyway an external capacitor (2.2 μF) must be inserted between A+ and ground when using
the device with very long cables.
1.2 Protection
It is present a protection against short circuits of the lamp and the relay power drivers (L)
and of the field power driver (F+), a thermal drivers shutdown protection and an overvoltage
protection of L power drivers.
1.3 Diagnosis
The circuit detects fault conditions related to the phase and F+ status and receives
informations from one of the three alternator phases. In order to prevent spurious
indications, fault warnings are not displayed immediately but are delayed by a fixed time.
1.4 Load response control
The internal circuit regulates the soft start characteristics (activated always at engine start)
and the soft attack characteristics.
1.5 Self start function
The device wakes up by the phase signal only. The phase signal must have a voltage
amplitude higher than VPHL1 and a frequency higher than EN-x.
Pin description L9911
6/20 DocID10990 Rev 13
2 Pin description
Figure 1. Pin connection (top view)
Table 2. Pin description
N° Pin Function
1 P Phase sense input.
2 DFM Field monitor output.
3 RES Reserved.
4 L Lamp terminal low side driver; relay terminal high side driver.
5 GND-case Ground.
6 RES Reserved.
7F
+
High side driver output.
8B
+
Sensed power supply.
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DocID10990 Rev 13 7/20
L9911 Electrical specification
19
3 Electrical specification
3.1 Absolute maximum ratings
T
j
= -40 to 150 °C, unless otherwise specified.
3.2 Thermal data
3.3 Electrical characteristics
T
j
= -40 °C to 150 °C; unless otherwise specified.
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
VSDC supply voltage (2 min. @ 25 °C) 24 V
-Transient supply voltage (load dump) [see Figure 8]
t < 500 ms 40 V
-Transient supply voltage (low energy spikes)
(see Figure 8) ISO7637-1 pulse 1,2,3 /ISO7637-3 60 V
TjJunction temperature range -40 to 150 °C
Tstg, Tcase Storage and case temperature range -40 to 150 °C
Ptot Total power dissipation (@ T
case
150°C, I
field
5A) 4 W
-Reverse battery voltage (see Figure 8) @ 25°C,
T = 15 sec. -2.5 V
- Normal working condition reverse voltage (P vs. GND) -1.5 V
- DC pin current on F+, B+, GND (bonding limitation) 15 A
- ESD voltage MILSTD883C (All pins vs.GND) ±4 KV
Table 4. Thermal data
Symbol Parameter Value Unit
Rth j-case Thermal resistance junction-to-case ≤1.5 °C/W
Table 5. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
Vbat Operating supply voltage - 7 - 18 V
Ib-sinked Supply battery current - - - 25 mA
Ib-stby Standby current B+ = 12.5 V, F+ = 0 V - - 500 μA
Electrical specification L9911
8/20 DocID10990 Rev 13
Vreg 1
Regulated voltage & thermal drift.
3 configurations available,
selectable by mask option (see
Table 8).
Ialt =1 A-0.9 · Inom; Tcase = 20 °C;
1400 < rpm < RPMMAX
(see Figure 2)
14.0
-4.5
14.4
-3.5
14.8
-2.5
V
mV/°C
Vreg 2
Ialt =10 A; Tcase = 23 °C;
rpm = 6000 rpm; 15 V max.
(see Figure 3)
14.35
-11.8
14.5
-10
14.65
-8.2
V
mV/°C
Vreg 3
Ialt =10 A; Tcase = 23 °C;
rpm = 6000 rpm (see Figure 4)
14.35
-6
14.5
-4
14.65
-2
V
mV/°C
Vreg 4
Ialt =10 A; Tcase = 23 °C;
rpm = 6000 rpm (see Figure 5)
13.95
-3.5
14.2
-2.5
14.3
-1.5
V
mV/°C
Vrpm - 1400<rpm<RPMMAX; Ialt = 10 A - - 200 mV
Vload - 5 A<Ialt < Inom; rpm = 6000 rpm - - 250 mV
Vreg-less Reg. voltage without battery Ialt = 3 A resistive; Tcase = 25 °C;
2000 < rpm < RPMMAX 12 - 16 V
Vov-p Overvoltage protection threshold
Voltage on pin
B+ to disable L
drivers
High and low
side driver off 18 - 22 V
Vov-d Overvoltage diagnosis threshold VB+ to turn on L low side driver
at VF+ > VS1
Vreg -
5% Vreg Vreg +
5% V
Tj-sd Thermal shutdown threshold Temperature to disable F+,
DFM, L (high & low side drivers) 160 175 190 °C
Tj-sd-dwn Thermal shut-down hysteresis
L/F+/DFM from OFF STATE
(due to thermal shutdown) to ON
STATE
Tj-sd-
10 -Tj-sd-
2°C
Vuv-1
Under voltage diagnosis threshold
VB+ to turn on L low side driver 7.7 8.6 9.5 V
Vuv-up VB+ to turn off L low side driver Vuv +
0.40
Vuv +
0.75
Vuv +
1.2 V
VF+_sat Field driver saturation voltage Tj = 150 °C; I = 4.5 A - - 0.6 V
Tj = 25 °C; I = 7 A - - 0.55 V
VfFreewheeling diode F+ I = 5 A - - 2 V
If_SCTH
Field short circuit driver protection
threshold current
(see Figure 15)
F+ = 0 V; Tj = -40 °C 11 - 18 A
F+ = 0 V; Tj = -25 °C 9.5 - 18 A
F+ = 0 V; Tj = -150 °C 9 - 18 A
Vs1 Field driver ON-state detection - 4.5 - 5.5 V
f-pre Pre-excitation frequency - 283 333 383 Hz
Duty-pre
Pre-excitation Field driver ON-duty
- 15.93 18.75 21.57 %
trOutput voltage rise time Ifield = 3 A resistive
see Figure 6)
10 - 50 μs
tfOutput voltage fall time 10 - 50 μs
Fsw_F+ Field switching frequency Ialt = 1 A~0.9 · Inom;
1400 rpm < rpm < RPMMAX 250 - 400 Hz
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
DocID10990 Rev 13 9/20
L9911 Electrical specification
19
If_leak Output field driver leakage current B+ = 24 V; VF+ = 0 - - 10 A
DUTY-PR Phase regulation max field ON
duty see Figure 7 26.56 31.25 35.94 %
VH_SAT
High side driver saturation
Voltage (see Figure 9)With driver Isource = 500 mA - - 1.5 V
VL_SAT
Low side driver saturation voltage
(see Figure 9)With driver Isink = 500 mA - - 1.5 V
VLSB
Self bias without supply lamp
driver voltage
B+ open; L connected to 12 V
through a 50 Ohm resistor --4V
IHSC
High side driver short circuit
current protection B+ = 12.5 V; L = GND 1.2 - 3 A
ILSC
Low side driver short circuit
current (see Figure 15)B+ = L = 12.5 V 1 - 2 A
VthL
Enable regulator supply voltage
threshold - 0.8 - 1.15 V
Ipd_L
L terminal pull-down current when
the generator is not rotating V
L
= 0.6 V 0.4 - 3.5 mA
IL_sink
L sink current when the generator
is rotating P frequency 500 Hz; VB+ = 12 V - - 100 μA
t-D Diagnostic alarm delay time - 0.2 - 0.5 s
Vcan-DFM
Test mode to cancel soft start/
attack (voltage) (see Figure 10)30 - 50 V
tcan-DFM Test mode delay time 25 - - ms
VPHL1
Enable control voltage input high
threshold - - - 0.40 V
VPHL2
Enable control voltage input low
threshold - - - 0.25(1) V
tPHL1
Enable Control Voltage Phase
Filtering Time -50-115μs
VPHH1
Diagnosis phase loss input high
threshold -8910V
VPHH2_1
Diagnosis phase loss input low
threshold - 6.4 7.4 8.4 V
tPHd Diagnostic phase filtering time - 50 - 100 μs
IPd-P1 Phase pull-down current VP = 0.8 V 1 - 8 mA
f-dfm
DFM output open drain switching
freq.
Ialt =1 A~0.9 · Inom;
1400 rpm < rpm < RPMMAX;
Isink = 4 mA
125 - 200 Hz
VL-DFM Output low voltage saturation I-sink = 14 mA - - 1.5 V
I-SC_DFM Short circuit current protection VB+ = VDFM = 12.5 V 50 - 400 mA
Ilk-DFM Output leakage current VDFM =16 V at DFM driver OFF - - 5 μA
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Electrical specification L9911
10/20 DocID10990 Rev 13
t-TM Output voltage rise time R = 1 k (see Figure 6)0.5 - 50
μs
t-TD Output voltage fall time 0.5 - 50
1. Guaranteed by design.
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Table 6. Load response control parameters
Symbol Parameter Test Condition Min. Typ. Max. Unit
tST_1 Soft start delay time (see
Figure 12) 2 steps available,
selectable by mask option (see
Table 7).
Activated always at engine start
-0-- s
tST_2 1.73 2 2.35 s
tSL_1 Soft attack time / soft start time
(see Figure 12). 2 steps
available, selectable by mask
option (see Table 7).
From 0 to 100 % field duty cycle
2.13 2.5 2.87
s
tSL_2 7.65 9 10.35
EN-RES
(constant)
Reset frequency range to
enable regulation; Frequency
judged after 4 periods (see
Figure 11)
-405060Hz
EN-1
Soft start enable (EN) and LRC
disable (DISAB) frequency
ranges.
4 configurations available,
selectable by mask option
(possible combinations in
Table 8). Always activated at
engine start. Frequencies
judged after 4 periods (see
Figure 11)
Tj = 25 °C
Tj = -40 to150 °C
108
102
120
120
132
138
Hz
Hz
EN-2 Tj = 25 °C
Tj = -40 to150 °C
131
124
145
145
159
166
Hz
Hz
EN-3 Tj = 25 °C
Tj = -40 to150 °C
144
136
160
160
176
184
Hz
Hz
EN-4 Tj = 25 °C
Tj = -40 to150 °C
174
165
193
193
212
221
Hz
Hz
DISAB-1 Tj = 25 °C
Tj = -40 to150 °C
270
255
300
300
330
345
Hz
Hz
DISAB-2 Tj = 25 °C
Tj = -40 to150 °C
315
298
350
350
385
402
Hz
Hz
DISAB-3 Tj = 25 °C
Tj = -40 to150 °C
367
347
408
408
449
469
Hz
Hz
DISAB-4 Tj = 25 °C
Tj = -40 to150 °C
420
397
466
466
512
535
Hz
Hz
Table 7. Load response control timing options
- t_SL = 2.5 s t_SL = 9 s
t_ST = 0 s LRC-A LRC-D
t_ST = 0.5 s LRC-C -
t_ST = 2 s LRC-E LRC-B
DocID10990 Rev 13 11/20
L9911 Electrical specification
19
Considering the overall WW application scenario, there is a direct correspondence between
Typical configurations A/B and regulation curve Vreg-1, and between typical configuration C
and regulation curves Vreg-2 and Vreg-3. This is allowing the summary of all possible
customization for L9911 in the table below.
Figure 2. Vreg-1
Table 8. Correspondence of frequency (typical values) to application features
Alternator revolution speed (rpm) 6 pole pairs 8 pole pairs
Typical configuration A
(Config-A)
Initiate regulation 1200 EN-1 EN-3
LRC Cut 3000 DISAB-1 DISAB-3
Typical configuration B
(Config-B)
Initiate Regulation 1450 EN-2 EN-4
LRC Cut 3000 DISAB-1 DISAB-3
Typical configuration
C (Config-C)
Initiate Regulation 1450 EN-2 EN-4
LRC Cut 3500 DISAB-2 EN-4
Table 9. Customization of L9911: combination of LRC, regulation, and application options
LRC
timing
options
Vreg-1/Config-A Vreg-1/Config-B Vreg-2/Config-B Vreg-2/Config-A Vreg-4/Config-A
6 Pole
Pairs
8 Pole
Pairs
6 Pole
Pairs
8 Pole
Pairs
6 Pole
Pairs
8 Pole
Pairs
6 Pole
Pairs
8 Pole
Pairs
6 Pole
Pairs
8 Pole
Pairs
LRC-A L9911P nya nya nya nya nya nya nya L9911K nya
LRC-B nya nya L9911F nya L9911I nya nya nya nya nya
LRC-C nya nya nya nya nya nya L9911V nya nya nya
LRC-D nya nya nya nya nya nya nya nya nya nya
LRC-E L9911U nya nya nya nya nya nya nya nya nya
4
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Electrical specification L9911
12/20 DocID10990 Rev 13
Figure 3. Vreg-2
Figure 4. Vreg-3
4
6
-AX
4YP
-IN
6^6 #
6^6 #
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4
6
-IN
-AX
4Y P
6^6 #
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DocID10990 Rev 13 13/20
L9911 Electrical specification
19
Figure 5. Vreg-4
Figure 6. Output voltage rise/fall time (F+, DFM)
Figure 7. Phase regulation characteristics
4
6
4Y P
-IN
-AX
6^6 #
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)FIELD
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Electrical specification L9911
14/20 DocID10990 Rev 13
3.4 Principle of phase regulation
When VB+ is above the regulated voltage, the field driver is controlled to keep phase peak
voltage from falling below VPHH1.
If phase peak voltage drops below VPHL1, phase regulation does not work.
Figure 8. Application diagram
Figure 9. High side/low side driver saturation
Figure 10. Test mode to cancel soft-start/attack
Figure 11. Soft-start enable frequency range
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DocID10990 Rev 13 15/20
L9911 Electrical specification
19
Figure 12. Soft-start characteristics (always activated at engine start)
Figure 13. Soft start/attack characteristics
)GNSW
ON
OFF
4IMESEC
4IMESEC
4IMESEC
4IMESEC
%NGINESPEEDRPM
&IELDCURRENT!
7,AMP
SOFTATTACKINHIBITION!LTSPEED
SOFTSTARTENABLE!LTSPEED
SMIN SMIN
3OFTSTART
DELAYTIME
3OFTSTART
DELAYTIME
3OFTSTART
DELAYTIME
3OFTSTART
TIMING
3OFTSTART
TIMING
3OFTSTART
TIMING
ON
OFF
)GNSWON
3TARTERON %'STOP
AND)GNSWOFF
)GNSWON
3TARTERON %'STOP 3TARTERON
S^S
S^S
%NGINE ST ART %NGINESTART %NGINERESTART
3OFT ATTACKINHIBI TION
!LTSPEED%'SPEED
3OFTATTACK INHIBITION
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Electrical specification L9911
16/20 DocID10990 Rev 13
Note: The diagnostic result is disabled during the Soft-start delay time t_ST 0...3 and the soft-start
/ soft attack timing t_SL 0...3
Figure 14. DF monitor electrical configuration
Figure 15. Short circuit drivers' protection
Field driver, DFMon driver and Relay driver are protected in switching mode (not linear),
with a retry time less than 25 ms.
Lamp driver is protected in linear mode, with a retry time of 1 s.
Table 10. Fault detection
Root cause Signal Effect Test detect
Alternator belt breaking P Alternator disexcitation VP<VPHH1 & VB+<Vreg
Brushes open P Alternator disexcitation VP<VPHH1 & VB+<Vreg
Field driver open P Alternator disexcitation VP<VPHH1 & VB+<Vreg
Field interruption P Alternator disexcitation VP<VPHH1 & VB+<Vreg
Field short circuit to the battery F+ Overvoltage VF+>VS1 & VB+ > Vov-d
Field short circuit to the ground P Alternator disexcitation VP<VPHH1 & VB+<Vreg
Battery discharge B+ Undervoltage VB+<Vuv
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DocID10990 Rev 13 17/20
L9911 Package information
19
4 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
4.1 Multiwatt 8 (pin 5 GND) package information
Figure 16. Multiwatt 8 (pin 5GND) package outline
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Package information L9911
18/20 DocID10990 Rev 13
Table 11. Multiwatt 8 (pin 5GND) package mechanical drawing
Ref
Dimensions
Millimeters Inches(1)
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Min. Typ. Max. Min. Typ. Max.
A - - 5 - - 0.1969
B - - 2.65 - - 0.1043
C - - 1.6 - - 0.0630
E 0.49 - 0.55 0.0193 - 0.0217
F 0.78 - 0.85 0.0307 - 0.0335
G 2.40 2.54 2.68 0.0945 0.1000 0.1055
G1 17.64 17.78 17.92 0.6945 0.7000 0.7055
H1 19.6 - - 0.7717 - -
H2 - - 20.2 - - 0.7953
L 20.35 20.65 0.8012 0.8130
L2 17.05 17.20 17.35 0.6713 0.6772 0.6831
L3 17.25 17.5 17.75 0.6791 0.6890 0.6988
L4 10.3 10.7 10.9 0.4055 0.4213 0.4291
L7 2.65 - 2.9 0.1043 - 0.1142
S 1.9 - 2.6 0.0748 - 0.1024
S1 1.9 - 2.6 0.0748 - 0.1024
U 0.40 - 0.55 0.0157 - 0.0217
Z 0.70 - 0.85 0.0276 - 0.0335
diam1 3.65 - 3.85 0.1437 - 0.1516
DocID10990 Rev 13 19/20
L9911 Revision history
19
5 Revision history
Table 12. Document revision history
Date Revision Changes
22-Jun-2004 1 Initial release.
18-May-2005 2
Modified Figure 2, Table 2 and Table 5;
Updated Figure 10, 11 and 14; Add Table 7.
Add ordering numbers.
07-Nov-2005 3 Updated Table 5.
Added new tables 6-9.
28-Nov-2005 4 Added the L9911C part number.
Updated the Table 9.
11-Jul-2007 5 Document reformatted.
Updated order codes, see Table 1: Device summary.
09-Nov-2009 6
Updated Table 1: Device summary, Table 7: Load response control
timing options and Table 9: Customization of L9911: combination of
LRC, regulation, and application options.
23-Jul-2010 7
Updated Table 1: Device summary, Table 5: Electrical characteristics
and Table 9: Customization of L9911: combination of LRC,
regulation, and application options.
Updated Figure 2, 3 and 4.
Added new Figure 5.
25-Jan-2011 8 Updated Table 5: Electrical characteristics.
Updated Figure 5.
29-Mar-2011 9 Modified in the Table 5: Electrical characteristics the values of the
“Vuv-up” parameter.
26-Mar-2012 10
Updated:
Table 1: Device summary on page 1;
Table 7: Load response control timing options on page 10;
Table 9: Customization of L9911: combination of LRC, regulation,
and application options on page 11.
28-May-2012 11 Updaded Table 9: Customization of L9911: combination of LRC,
regulation, and application options on page 11.
19-Sep-2013 12 Updated disclaimer.
30-Sep-2015 13 Added Section 1.5: Self start function on page 5.
L9911
20/20 DocID10990 Rev 13
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