PRELIMINARY
2001.May.23
Rev. 0.06 - 1 -
Low Noise 800mA LDO REGURATOR
R1170X series
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■ OUTLINE
The R1170 Series are positive voltage regulator ICs by CMOS process. The R1170 Series have features of
high ripple rejection, low dropout voltage, high output voltage accuracy, low consumption current. Each of these ICs
consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at
short mode, a chip enable circuit, and thermal-shunt circuit. Output Voltage of R1170 is fixed in the IC.
Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make
low dropout voltage and chip enable function prolong the battery life. These regulators are remarkable improvement
on the current regulators in terms of ripple rejection, input transient response, and load transient response.
Maximum Output Current is large for its compact size.
Thus, the R1170 Series are suitable for various power sources for portable appliances.
Since the packages for these ICs are the SOT-89-5 package or HSON6 (Under Development), high density
mounting of the ICs on boards is possible.
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■ FEATURES
●Ultra-Low Supply Current• • • • • • • • TYP. 80µA
●Low Standby Current • • • • • • • • • • • TYP. 0.1µA
●Output Current • • • • • • • • • • • • • • • MIN. 800mA(VIN=VOUT+1.0V)
●Output Voltage • • • • • • • • • • • • Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V
●High Output Voltage Accuracy • • • • ±2.0%
●Low Dropout Voltage• • • • • • • • • • • • TYP. 0.12V(VOUT=3.0V, IOUT=300mA)
●Line Regulation• • • • • • • • • • • • TYP. 0.05%/V
●Small Package • • • • • • • • • • • • • • • • SOT-89-5, HSON6
●Built-in Current Limit Circuit
●Built-in Thermal Shunt Circuit
●Low Temperature-drift Coefficient of Output Voltage • • • • • • • • • TYP.±100ppm/°C
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■ APPLICATIONS
●Local Power source for Notebook PC.
●Local Power source for portable appliances, cameras, and videos.
●Local Power source for equipment of battery-use.
●Local Power source for home appliances.
PRELIMINARY
Rev. 0.06 - 2 -
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■ BLOCK DIAGRAMS
R1170H Series R1170D Series
Vref
1
4 5
2
Limit
-
+
VDD
CE
VOUT
GND
VDD
VDD
Vref
3
61
4
Limit Circuit
-
+
CE
VOUT
GND
52VOUT
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■ SELECTION GUIDE
The output voltage, the chip-enable polarity, the taping type can be selected at the user’s request. The selection
can be made with the part number as follows;
R1170X XXXX-XX ← Part Number
↑ ↑ ↑ ↑
a b c d
Code Contents
a Package Type; H: SOT89-5, D: HSON-6P
b Designation of Output Voltage(VOUT)
Stepwise setting with 0.1V increment in the range from 1.5V to 4.0V
c Designation of option;
A: Built-in Chip Enable Circuit, Active at “L”
B: Built-in Chip Enable Circuit, Active at “H”
d Designation of Taping Type;
T1 or T2 (Refer to Taping Specifications)
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■ PIN CONFIGURATION
● SOT-89-5
54
123
Mark Side
PRELIMINARY
Rev. 0.06 -3-
● HSON-6P (Under Development)
6 5 4
1 2 3
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■ PIN DESCRIPTION
SOT89-5
Pin No. Symbol Description
1 CE or CE Chip Enable Pin Voltage Regulator Output Pin
2 GND Ground Pin
3V
DD Input Pin
4V
OUT Voltage Regulator Output Pin
5 NC No Connection
HSON-6P
Pin No. Symbol Description
1V
OUT Voltage Regulator Output Pin
2V
OUT Voltage Regulator Output Pin
3 CE or CE Chip Enable Pin Voltage Regulator Output Pin
4 GND Ground Pin
5V
DD Input Pin
6V
DD Input Pin
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■ ABSOLUTE MAXIMUM RATINGS
Item Symbol Rating Unit
Input Voltage VIN 7.0 V
Input Voltage(CE or CE Input Pin)*Note VCE -0.3 ~ VIN+0.3 V
Output Voltage VOUT -0.3 ~ VIN+0.3 V
Output Current IOUT 1.2 A
Power Dissipation PDInternally limited
Operating Temperature Topt -40 ~ 85 °C
Storage Temperature Tstg -55 ~ 125 °C
PRELIMINARY
Rev. 0.06 - 4 -
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■ ELECTRICAL CHARACTERISTICS
●R1170XxxxA
(Topt=25
°C)
Item Symbol Conditions MIN. TYP. MAX. Unit
Input Voltage VIN 6.0 V
Supply Current1 ISS1 VIN-VOUT=1.0V
VCE=GND
80 160 µA
Standby Current Istb VIN=VCE=6.0V 0.1 1.0 µA
Output voltage VOUT VIN-VOUT=1.0V
IOUT=100mA
x0.98 x1.02 V
Output Current IOUT1 VIN-VOUT=1.0V 800 mA
Load regulation ∆VOUT/
∆IOUT
VIN-VOUT=1.0V
1mA≤IOUT≤300mA
30 100 mV
Dropout Voltage VDIF IOUT=300mA Refer to Dropout Voltage Table
Line regulation ∆VOUT/
∆VIN
IOUT=100mA
VOUT+0.5V≤VIN≤8.0V
0.05 0.30 %/V
Ripple Rejection RR f=1kHz,Ripple 0.5Vp-p
VIN-VOUT=1.0V
50 dB
Output Voltage
Temperature Coefficient
∆VOUT/
∆T
IOUT=10mA
-40°C ≤ Topt ≤ 85°C
±100 ppm
/°C
Short Current Limit ILIM VOUT=0V 40 mA
Pull-up resistance for CE pin RPU 1.25 2.50 5.00 MΩ
CE Input Voltage “H” VCEH 1.50 VIN V
CE Input Voltage “L” VCEL 0.00 0.25 V
Thermal Shutdown Detector
Threshold Temperature
TTSD Junction Temperature 150 °C
Thermal Shutdown Released
Temperature
TTSR Junction Temperature 120 °C
PRELIMINARY
Rev. 0.06 -5-
●R1170xxxxB
(Topt=25°C)
Item Symbol Conditions MIN. TYP. MAX. Unit
Input voltage VIN 6.0 V
Supply Current1 ISS1 VIN-VOUT=1.0V VCE=VIN 80 160 µA
Standby Current Istb VIN=6.0V, VCE=GND 0.1 1.0 µA
Reference Voltage for
Adjustable Voltage Regulator
VOUT VIN-VOUT=1.0V
IOUT=100mA
x0.98 x1.02 V
Output Current IOUT1 VIN-VOUT=1.0V 800 mA
Load regulation ∆VOUT/
∆IOUT
VIN-VOUT=1.0V
1mA≤IOUT≤300mA
30 100 mV
Dropout Voltage VDIF IOUT=300mA Refer to Dropout Voltage Table
Line regulation ∆VOUT/
∆VIN
IOUT=100mA
VOUT+0.5V≤VIN≤8.0V
0.05 0.30 %/V
Ripple Rejection RR f=1kHz,Ripple 0.5Vp-p 50 dB
Output Voltage
Temperature Coefficient
∆VOUT/
∆T
-40°C≤Topt≤85°C±100 ppm
/°C
Short Current Limit ILIM VOUT=0V 40 mA
Pull-down resistance for CE pin RPD 1.25 2.5 5 MΩ
CE Input Voltage “H” VCEH 1.5 VIN V
CE Input Voltage “L” VCEL 00.25V
Thermal Shutdown Detector
Threshold Temperature
TTSD Junction Temperature 150 °C
Thermal Shutdown Released
Temperature
TTSR Junction Temperature 120 °C
●Dropout Voltage by Output Voltage (Topt=25°C)
Dropout Voltage (V)
Output Voltage
VOUT(V) TYP. MAX.
VOUT=1.5 0.35 0.45
VOUT=1.6 0.30 0.35
VOUT=1.7 0.25 0.30
1.8≤VOUT≤2.0 0.20 0.25
2.1≤VOUT≤2.4 0.15 0.20
2.5≤VOUT≤4.0 0.12 0.18
PRELIMINARY
Rev. 0.06 - 6 -
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■ PACKAGE DIMENSIONS
SOT-89-5
HSON6(Under Development)
1.5±0.1
0.4±0.1
4.5±0.1
1.6±0.2
0.42±0.1
4.5 +0.5
-0.3
2.5 ±0.1
0.9
54
123
φ1.0
0.4
mi n
0.4±0.1
