R1161N291B RICOH Co.,Ltd., R1161N291B Datasheet

R1161N291B

Manufacturer Part Number

R1161N291B

Description

Manufacturer

RICOH Co.,Ltd.

Datasheet

1.R1161D152B.pdf (44 pages)

Specifications of R1161N291B

Date_code

06+

Packing_info

SOT-153

Current page: 1 of 44
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OUTLINE

current, and low ON-resistance. 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.

current, current limit circuit is included. The R1161x Series have 3-mode. One is standby mode with CE or

standby control pin. Standby mode realizes ultra small consumption current off mode. Other two modes are

realized with ECO pin . Fast Transient Mode (FT mode) and Low Power Mode (LP mode) are alternative with

ECO pin . Consumption current is reduced at Low Power Mode compared with Fast Transient Mode. Output

voltage is maintained between FT mode and LP mode.

The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are

SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible.

FEATURES

APPLICATIONS

3-MODE 300mA LDO REGULATOR

The R1161x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply

These ICs perform with low dropout voltage and a chip enable function. To prevent the destruction by over

Ultra-Low Supply Current .................................Typ. 3.5 A (Low Power Mode, V

Standby Mode ...................................................Typ. 0.1 A

Low Dropout Voltage.........................................Typ. 0.48V(I

High Ripple Rejection .......................................Typ. 65dB(f 1kHz, FT Mode)

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

Excellent Line Regulation .................................Typ. 0.01%/V (at Fast Transient Mode)

High Output Voltage Accuracy .......................... 2.0%( 3.0% at LP Mode)

Small Package ................................................SOT-23-5 (Super Mini-mold), SON-6, HSON-6

Output Voltage ..................................................Stepwise setting with a step of 0.1V in the range of 0.8V to

Input Voltage .....................................................Min. 1.40V(V

Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode)

External Capacitors...........................................C

Precision Voltage References.

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

Power source for battery-powered equipment.

Typ. 80 A (Fast Transient Mode, V

Typ. 60 A (Fast Transient Mode, V

Typ. 0.31V(I

Typ. 0.23V(I

3.3V is possible

Min. 1.45V(V

OUT

R1161x SERIES

Ceramic 1.0 F (V

OUT

Tantalum 1.0 F (V

OUT

<1.0V)

300mA Output Voltage 1.0V Type)

300mA Output Voltage 1.5V Type)

300mA Output Voltage 3.0V Type)

1.0V)

OUT

<1.6V),

0V)

<1.8V)

1.8V)

NO.EA-106-0511

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