L9820
HIGH SIDE DRIVER
OPERATING SUPPLY VOLTAGE UP TO 25V
DC CURRENT 0.3A
RON < 800mΩ
DIAGNOSTIC AND PROTECTION FUNC-
TIONS
µP CO MPATIBLE
ENABLE INPUT FOR STAND-BY MODE
DESCRIPTION
The L9820 High Side Driver realized with Mul-
tipower - BCD mixed technology, drives resistive
or inductive loads with one side connected to
ground.
The ENABLE input is TTL compatible and a diag-
nostic output provides an indication of short circuit
and device status (thermal and overvoltage shut-
down). Onchip thermal protection and short circuit
protection are provided.
September 2003
®
BLOCK DIAGRAM
Minidip SO8
ORDERING NUMBERS:
L9820 L9820D
MULTIPOWER BCD TECHNOLOGY
40mΩ
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ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VSMax Forward Voltage 50 Vdc
IRReverse Bias Current at -1.3V –0.46 A
V5Input Voltage (to GND) –0.3 to 20 V
V8Diag. Output Voltage (to GND) –0.3 to 20 V
V1Output Voltage (to GND) –0.3 to 25 V
I4Supply Current Internally limited
I5Enable Input Current 0.5 mA
I8Diag. Out Current (sink) 10 mA
I1Output Current Internally limited
Top Operation Temperature –40 to 85 °C
Tj, Tstg Junction and Storage Temperature Range –55 to 150 °C
Tjp Detecting Temperature 150 °C
THERMAL DATA
Symbol Parameter Minidip SO8 Unit
Rth j-amb Thermal Resistance Junction-ambient Max. 100 200 °C/W
TRUTH TABLE
H: high level
L: low level
ENABLE FUNCTION DIAG. STATUS POWER STATUS
L Operating OFF H L
H Normal Operation H H
H Overvoltage Protection ON L L
H Overcurrent Protection ON L L
H Overtemperature
Protection ON LL
PIN C ONNECTION (Top views)
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PIN FUNCTIONS
N. Name Description
1 POWER OUTPUT The device is provided with short circuit protection.
4 POWER SUPPLY Supply voltage input.
5 ENABLE INPUT TTL compatible input. High level on this pin means output current ON.
The low level voltage switches off the charge pump, the power stage and
the diagnostic output reducing to the minimum value the quiescent current.
7 GROUND This pin must be connected to ground.
8 DIAGNOSTIC FEEDBACK The diagnostic circuit is active in input high level condition. This output
detects with Tipically 50µs delay at Tamb = 25°C the following faults:
– Overvoltage condition.
– Thermal shutdown.
– Short circuit. The power stage current is internally limited at 1.5A.
The diagnostic output is active low. The diagnostic delay time allows to
avoid spurious diagnosys(i.e.: turn ON overcurrent, overvoltage spikes etc.).
ELECTRICA L CHARACTERI STICS (V S = 14.4V, –40°C≤ Tj ≤ +85°C, unless otherwise spec ified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit
VSOperating Supply Voltage 6 25 V
Ron On Resistance Input > 2V, Tj = 25°C
Input > 2V, Full T range 0.6 0.8
1.2 Ω
Ω
Ioff Off State Supply Current Tj < 35°C
Tj = 85°C130
300 µA
µA
Ion On State Supply Current 4 mA
VEL Enable Low Level 0.8 V
VEH Enable High Level 2 V
IEEnable Current 0V < Vi <5V 10 µA
Ileakd Diagnostic Output Leakage Current VCC = 5V Diagnostic Output High 10 µA
Vsatd Diagnostic Output Saturated
Voltage Isink < 3.5mA 0.4 V
tdd Diagnostic Delay Time Tj = 25°C30µs
t
don Output ON Delay Time Tj = 25°C30µs
t
r
Output ON Rise Time Tj = 25°C 100 µs
tdoff Output OFF Delay Time Tj = 25°C80µs
t
f
Output OFF Fall Time Tj = 25°C 100 µs
Vdon Overvoltage Detection ON 25 V
Vdh Overvoltage Hysteresis 2 5 V
Idon Overcurrent Detection ON 0.5 1.5 A
Tdon Overtemperature Detection ON 150 °C
Tdh Overtemperature Hysteresis 25 50 °C
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DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 1.75 0.069
a1 0.1 0.25 0.004 0.010
a2 1.65 0.065
a3 0.65 0.85 0.026 0.033
b 0.35 0.48 0.014 0.019
b1 0.19 0.25 0.007 0.010
C 0.25 0.5 0.010 0.020
c1 45° (typ.)
D (1) 4.8 5.0 0.189 0.197
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 3.81 0.150
F (1) 3.8 4.0 0.15 0.157
L 0.4 1.27 0.016 0.050
M 0.6 0.024
S8° (max.)
(1) D and F do not include mold flash or protrusions. Mold flash or
potrusions shall not exceed 0.15mm (.006inch).
SO8
OUTLINE AND
MECHANICAL DATA
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OUTLINE AND
MECHANICAL DATA
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 3.32 0.131
a1 0.51 0.020
B 1.15 1.65 0.045 0.065
b 0.356 0.55 0.014 0.022
b1 0.204 0.304 0.008 0.012
D 10.92 0.430
E 7.95 9.75 0.313 0.384
e2.54 0.100
e3 7.62 0.300
e4 7.62 0.300
F 6.6 0.260
I 5.08 0.200
L 3.18 3.81 0.125 0.150
Z 1.52 0.060
Minidip
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