ST3107 200mA Ultra-Low IQ Synchronous Buck Converter
Specifications
Input Voltage (VIN)2.06~6.0V
Output Current (IOUT)200mA
Output Voltage (VOUT/FB)1.0~4.0V internal (1.8/3.0/3.3V)
FB/VOUT Accuracy1.8V±3%; 3.0V/3.3V±2.0%
Current Consumption (IQ)760nA (typ)
Switching Frequency-
Modulation ModePFM
SynchronousSynchronous
Typical PerformanceUltra-low quiescent 760nA; 91% efficiency; UVLO & short-circuit protection; fast output discharge; for battery/wearable
PackageSOT23-5
Product details
Overview
ST3107 is a high efficiency, easy-to-use, ultra-low quiescent 760nA synchronous step-down DC/DC converter with an input voltage range of 2.06V to 6.0V. The output voltage can be set internally, ranging from 1.0V to 4.0V, and it can drive an output current of 200mA. With built-in PMOS driver and NMOS rectifier, it only needs two ceramic capacitors and an inductor outside. PFM control achieves low static current consumption, making it particularly suitable for small, high-efficiency, battery-powered equipment. With UVLO function, it will not work if the input voltage is less than 2.0V (TYP). When it enters the off state, the system can quickly discharge the charge of the output capacitor through the internal circuit.
Features
- Output current: 200mA
- Efficiency: 91%
- Input voltage: 2.06~6.0V
- Output voltage accuracy: 1.8V (±3%); 3.0V/3.3V (±2.0%)
- Quiescent current: 760nA (typ.)
- PFM operation
- UVLO and short-circuit protection
- Fast output discharge
- Only two ceramic capacitors and one inductor required
- Operating ambient temperature: -40~+85°C
Typical Applications
- Hand-held devices, portable information devices
- Battery powered equipment
- Wearable devices
- Smart watches
