R1141Q291B-TR RICOH Co.,Ltd., R1141Q291B-TR Datasheet

R1141Q291B-TR

Manufacturer Part Number

R1141Q291B-TR

Description

Manufacturer

RICOH Co.,Ltd.

Datasheet

1.R1141Q221B-TR.pdf (15 pages)

Specifications of R1141Q291B-TR

Date_code

02+

Packing_info

SOT-343

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Rev. 1.10

The R1141Q 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 reference unit, an error

amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit.

Output Current Limit circuit is embedded in the R1141Q Series to prevent the break down of the IC caused by excess current.

Chip enable circuit realizes standby mode and makes consumption current extremely small.

These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient

response of the R1141Q 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.

OUTLINE

FEATURES

APPLICATIONS

Ultra-Low Supply Current......................................... TYP. 90 A

Standby Mode ........................................................... TYP. 0.1 A

Low Dropout Voltage ................................................ TYP. 0.15V(I

High Ripple Rejection ............................................... TYP. 75dB(V

Low Temperature-Drift Coefficient of Output Voltage TYP. ±100ppm/ C

Excellent Line Regulation ......................................... TYP. 0.05%/V

High Output Voltage Accuracy.................................. ±1.5% or 30mV(V

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

Built-in chip enable circuit (B/D: active high)

Built-in fold-back protection circuit ..........................TYP. 40mA (Current at short mode)

Power source for cellular phones such as GSM, CDMA and various kinds of PCS.

Power source for electrical appliances such as cameras, VCRs, camcorders, and hand-held communication equipment.

Power source for battery-powered equipment.

Very stable Voltage Reference

Ceramic capacitor can be used for Output pin..........Recommended value is 2.2 F or more.

possible

- 1 -

SC82 120mA LDO REGULATOR

R1141Q SERIES

OUT

=100mA Output Voltage=3.0V Type)

2.4V),70dB(V

OUT

2.0V)

OUT

2.5V) (f=1kHz)

'2001.5.7

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