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Overview - S-1170 series
High Ripple-Rejection Low Dropout High Output Current CMOS Voltage Regulator S-1170 series
The S-1170 Series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and low current consumption developed based on CMOS technology.
A built-in low on-resistance transistor provides a low dropout voltage and large output current, a built-in overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor, and a built-in thermal shutdown circuit prevents damage caused by the heat. An ON/OFF circuit ensures a long battery life. Compared with the voltage regulators using the conventional CMOS process, a larger variety of capacitors are available, including small ceramic capacitors. Small SOT-89-5 and 6-Pin HSON(A) packages realize high-density mounting.
Features
- Output voltage: 1.5 V to 5.5 V, selectable in 0.1 V steps.
- High-accuracy output voltage: ±1.0%
- Low dropout voltage: 120 mV typ. (3.0 V output product, Iout =300 mA)
- Low current consumption: During operation 80 µA typ. 160 µA max., During shutdown 0.1 µA typ. 1.0 µA max.
- High peak current capability: 800 mA output is possible (@ Vin >Vout(S) +1.0 V) *1
- Built-in ON/OFF circuit: Ensures long battery life.
- Low ESR capacitor can be used: A ceramic capacitor of 4.7 µF or more can be used for the output capacitor.
- High ripple rejection: 70 dB typ. (@ 1.0 kHz)
- Built-in overcurrent protector: Overcurrent of output transistor can be restricted.
- Built-in thermal shutdown circuit: Damage caused by heat can be prevented.
- Package: SOT-89-5, 6-pin HSON(A)
- Lead-free products
*1. Attention should be paid to the power dissipation of the package when the output current is large.
Applications
- Power supply for DVD and CD-ROM drives
- Power supply for battery-powered devices
- Power supply for personal communication devices
- Power supply for note PCs
Standard Circuit
