SC82 120mA LDO REGULATOR
R1140Q SERIES
OUTLINE
The R1140Q Series are voltage regulator ICs with high output voltage accuracy, low supply current, low ON-
resistance, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage refer-
ence unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function. The line transient response and load tran-
sient response of the R1140Q Series are excellent, thus these ICs are very suitable for the power supply for hand-held
communication equipment.
The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SC-82AB
(Super Mini-mold) package, high density mounting of the ICs on boards is possible.
FEATURES
•
Ultra-Low Supply Current ................................................... TYP 75µA
.
•
Standby Mode ....................................................................... TYP 0.1µA
.
•
Low Dropout Voltage ........................................................... TYP 0.15V (I
OUT
=100mA Output Voltage=3.0V Type)
.
•
High Ripple Rejection .......................................................... TYP 75dB (f=1kHz)
.
•
Low Temperature-Drift Coefficient of Output Voltage....... TYP ±100ppm/°C
.
•
Excellent Line Regulation.................................................... TYP 0.05%/V
.
•
High Output Voltage Accuracy ............................................ ±2.0%
•
Excellent Dynamic Response
•
Small Package ....................................................................... SC-82AB (Super Mini-mold)
•
Output Voltage...................................................................... Stepwise setting with a step of 0.1V in the range of 1.5V
to 4.0V is possible
•
Built-in chip enable circuit (B/D: active high)
•
Built-in fold-back protection circuit..................................... TYP 40mA (Current at short mode)
.
APPLICATIONS
•
Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
•
Power source for electrical appliances such as cameras, VCRs and camcorders.
•
Power source for battery-powered equipment.
1
R1140Q
BLOCK DIAGRAM
R1140Q××
××1B
××
4
V
DD
1
V
OUT
4
V
DD
R1140Q××
××1D
××
1
V
OUT
Vref
CE
3
Current Limit
GND
2
CE
3
Vref
Current Limit
GND
2
SELECTION GUIDE
The output voltage, mask option, and the taping type for the ICs can be selected at the user’s request. The selec-
tion can be made by designating the part number as shown below;
R1140Q××1×-××
↑↑ ↑ ↑
ab c d
Code
a
b
Designation of Package Type :
Q: SC82-AB (Super Mini-mold)
Setting Output Voltage (V
OUT
) :
Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible.
Designation of Mask Option :
c
B: Without auto discharge function at OFF state.
D: With auto discharge function at OFF state.
d
Designation of Taping Type :
Ex. TR, TL (refer to Taping Specifications; TR type is the standard direction.)
Contents
←Part
Number
2
Embedded System
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