R1172x - RICOH

R1172x SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO

• SOT-23-5 Pin No. 1 Symbol VOUT Description Voltage Regulator Output Pin • SOT-89-5 Pin No. 1 Symbol CE or CE Description Chip Enable Pin Ground Pin No Connection Input Pin 2 3 4 5 GND VDD NC CE or CE Ground Pin Input Pin No Connection 2 3 4 GND NC VDD Chip Enable Pin 5 • HSOP-6J VOUT Voltage Regulator Output Pin • HSON-6*1 Pin No. 1 2 3 Symbol.

Features

of super low dropout, 1A output current capability. Even the output voltage is set at 1.5V, on resistance of internal FET is typically 0.32Ω. Therefore, applications that require a large current at small dropout are suitable for the R1172x series. Low input voltage is acceptable and low output voltage can be set. The minimum input voltage is 1.4V, and the lowest set output voltage is 0.8V. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at over-current, a chip enable circuit, a thermal-shutdown circuit.