R1161x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply 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. These ICs perform with low dropout voltage and a chip enable function. To prevent the destruction by over 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 (Limited), and HSON-6 (Limited), high density mounting of the ICs on boards is possible.
The R1161x Series are CMOS-based voltage regulator ICs designed for high output voltage accuracy, low supply current, and low ON-resistance. These devices feature a built-in current limit circuit to prevent destruction by overcurrent and include a chip enable function.
The series offers three operating modes: Standby mode (ultra-small consumption), Fast Transient Mode (FT), and Low Power Mode (LP). The LP mode reduces consumption current compared to FT mode while maintaining output voltage. Available packages include SOT-23-5, SON-6, and HSON-6.
| Supply Current (Low Power Mode, Vout<1.6V) | Typ. 3.5uA |
|---|---|
| Supply Current (Fast Transient Mode, Vout<1.8V) | Typ. 80uA |
| Output Voltage Range | 0.8V to 3.3V |
| Input Voltage Min. | 1.40V |
| Output Current | 300 mA |
| Operating Temperature Range | -40 ~ 85 °C |
The device supports an output current of up to 300 mA.
The typical supply current is 3.5 uA under these conditions.
The input voltage must be at least 1.40 V.