The S-1701 Series, developed based on CMOS technology, is a voltage regulator with a reset function and integrates a high-accuracy voltage detector with on-chip delay circuit and a positive voltage regulator with a low dropout voltage and high output voltage on one chip. The S-1701 Series is available in many types according to the selection of the voltage detector block of the voltage detector, including a SENSE pin input product. A built-in low on-resistance transistor provides a low dropout voltage and large output current. Small ceramic capacitors are available and an external capacitor for delay is needless. Small SOT-23-5 and SOT-89-5 packages realize high-density mounting.
Features
Regulator block
- Output voltage
- 1.5 to 5.0 V, selectable in 0.1 V steps.
- High-accuracy output voltage
- ±1.0%
- High peak current capacity
- 400 mA output is possible. (@ Vin Vout(s) +2.0 V) *1
- Built-in ON/OFF circuit
- Ensures long battery life.
During power-off.1 µA typ., 1.0 µA max. - Low ESR capacitor can be used
- A ceramic capacitor of 1.0 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.
- Operating voltage range
- 2.0 to 6.5 V
Detector block
- Output voltage
- 1.5 to 5.5 V, selectable in 0.1 V steps.
- High-accuracy output voltage
- ±1.0%
- Output mode
- Nch open-drain active low output
- No need of an external capacitor for delay
- Three delay time settings
- No delay (60 µs), 50 ms, 100 ms
- Operating voltage range
- 0.8 to 6.5 V
Whole regulator
- Low current consumption
- During operation 85 µA typ.
- Lead-free products
*1. Attention should be paid to the power dissipation of the package when the output current is large.
Applications
- Power supply and reset circuit for battery-powered devices
- Power supply for personal communication devices
- Power supply for home appliances