The R1173x Series are CMOS-based positive voltage regulator ICs. The R1173x Series have features of super low dropout, 1A output current capability, and -3mV typical load regulation at 1A. 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 R1173x 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, and so on. A stand-by mode with ultra low consumption current can be realized with the chip enable pin. The output voltage types of R1173 are fixed one in the IC and adjustable one (R1173x001x). Since the packages for these ICs are the SOT-89-5 package, HSON-6, or HSOP-6J, high density mounting of the ICs on boards is possible.
The R1173x Series are CMOS-based positive voltage regulator ICs designed for applications requiring large currents at small dropout voltages. Key features include a typical load regulation of -3mV at 1A, an output current capability of 1A, and the ability to set minimum input voltages as low as 1.4V with adjustable output voltages starting from 0.8V.
The series is available in SOT-89-5, HSON-6, and HSOP-6J packages to support high-density mounting. The ICs incorporate built-in thermal shutdown and current limit circuits for protection, along with a chip enable circuit that allows for an ultra-low consumption standby mode.
| Output Current | 1A |
|---|---|
| Load Regulation (Typ.) | -3mV at 1A |
| Minimum Input Voltage | 1.4V |
| Lowest Set Output Voltage | 0.8V |
| Output Voltage Range (Fixed) | 0.8V to 5.0V |
| Packages | SOT-89-5, HSON-6, HSOP-6J |
| Operating Temperature Range | -40 to 85 °C |
The typical dropout voltage is 0.32V when the output voltage is set at 1.5V and the load current is 1A.
The R1173x Series is available in SOT-89-5, HSON-6, and HSOP-6J packages.
Yes, it includes a built-in thermal shutdown circuit and a built-in current limit circuit.