ST2110 Low-Voltage PFM Boost Converter
Specifications
Input Voltage (VIN)0.9V~6.0V
Output Current (Typ.)100mA@VIN=1.2V/VOUT=1.9V
Modulation ModePFM
Output Voltage (VOUT)1.8V~6.0V (0.1V step)
FB/VOUT Accuracy±2%
Oscillation Frequency (Typ.)360KHz (TYP. ST2110C25; per-version 150/310/360KHz)
Power MOS CharacteristicsBuild-in transistor; RDS(on) not specified
PackageSOT89-3, SOT23-5, SOT23-3
Product details
Overview
The ST2110 Series is a PFM step-up DC/DC converter IC with low supply current by CMOS process. High frequency noise that occurs during switching is reduced by using advanced circuit design, and the output voltage is programmable in 0.1V steps between 1.8~6.0V. A low ripple, high efficiency step-up DC/DC converter can be constructed of ST2110 with only three external components. Also available is a CE (chip enable) function that reduces power dissipation during shutdown mode. ST2110 is suitable for use with battery-powered instruments requiring low noise and low supply current.
Features
- Low ripple and low noise
- Operating voltage range: 0.9V~6.0V
- Output voltage range: 1.8V~6.0V (0.1V step)
- Output voltage accuracy: ±2%
- Output current: IOUT=100mA at VIN=1.2V, VOUT=1.9V
- Low start voltage: ≤0.9V (at IOUT=1mA)
- Maximum oscillator frequency: 360KHz (TYP.)
- High efficiency: 85% (TYP.)
- Built-in transistor
- CE (chip enable) function reduces shutdown power
- Packages: SOT89-3, SOT23-5, SOT23-3
Typical Applications
- Power source for battery-powered equipment
- Power source for wireless mouse, wireless keyboard, toys
- Cameras, camcorders, VCRs, PDAs
- Hand-held communication equipment power
- Power source for appliances which require higher cell voltage than that of batteries used
