RICOH R1162x Series User Guide
Summary
The R1162x Series are high-precision, CMOS LDO voltage regulators offering stable power solutions with ultra-low quiescent current. Featuring advanced 3-mode operation including Standby, Fast Transient, and Low Power modes, these ICs ensure optimal power efficiency across various conditions. This guide provides comprehensive details on product selection, operational parameters (e.g., high ripple rejection, low dropout voltage), ideal applications, and technical specifications. Designed for developers building battery-powered devices, portable equipment, and sensitive electronic appliances requiring stable power references.
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R1162x SERIES
3-MODE 150m A LDO REGULATOR
NO.EA-110-120404
OUTLINE The R1162x Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy and low supply current. 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 so on. The output voltage is internally fixed with high accuracy. These ICs perform with the chip enable function and realize a standby mode with ultra low supply current. To prevent the destruction by over current, the current limit circuit is included. The R1162x Series have 3-mode. One is standby mode with CE or standby control pin. 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. The output voltage is maintained between FT mode and LP mode. Since the packages for these ICs are SOT-23-5 (Limited) and SON1612-6 packages, high density mounting of the ICs on boards is possible.
FEATURES • Supply Current .......................................................Typ. 5.5μA (Low Power Mode),
Typ. 70μA (Fast Transient Mode)
• Standby Current .....................................................Typ. 0.1μA • High Ripple Rejection ............................................Typ. 70d B (f=1k Hz, Fast Transient Mode) Typ. 60d B (f=10k Hz, Fast Transient Mode) • Input Voltage Range ..............................................2.0V to 6.0V • Output Voltage Range............................................1.5V to 4.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.) • Output Voltage Accuracy........................................±2.0% (±3.0% at Low Power Mode) • Temperature-Drift Coefficient of Output Voltage ....Typ. ±100ppm/°C • Dropout Voltage .....................................................Typ. 0.25V (IOUT=150m A , VOUT=2.8V) • Line Regulation ......................................................Typ. 0.02%/V • Package ...............................................................SON1612-6, SOT-23-5 (Limited) • Built-in fold-back protection circuit .........................Typ. 40m A (Current at short mode) • Performs with Ceramic Capacitors ........................CIN=1.0μF,COUT=0.47μF
APPLICATIONS • Precision Voltage References. • Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment. • Power source for battery-powered equipment.
Page Summary Contents For RICOH R1162x Series User Guide
Manual Details
| Brand | Ricoh |
|---|---|
| Pages | 27 |
| File Size | 790.90 KB |
| Published | June 04, 2026 |
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Frequently Asked Questions
What are the recommended capacitors for proper operation?
The R1162x series requires Ceramic Capacitors with specified values of CIN=1.0μF, COUT=0.47μF.
How can I control between different power modes (Standby vs. Active)?
Standby mode uses the CE pin, while Fast Transient Mode and Low Power Mode are selected using the alternative ECO pin.
What is the minimum supply current when operating in standby state?
The typical standby current for this regulator IC is very low at 0.1μA.
What is the allowable working voltage range for input power?
The specified Input Voltage Range for the device is from 2.0V to 6.0V.