Products
Product image
Part number
Input Voltage (VIN)
Output Current (Typ.)
Modulation Mode
Output Voltage (VOUT)
FB/VOUT Accuracy
Oscillation Frequency (Typ.)
Power MOS Characteristics
Package
ST8042B2V~24V
2A
PWM (fixed-freq current mode)
Adjustable up to 28V, from 0.6V (VFB=0.6V)
±2% (VFB=600mV, 588~612mV)
1.2MHz (fixed)
Built-in power MOSFET: RDS(on)=80mΩ, internal 4A switch current limit
SOT23-6
ST21692.5V~6.0V (VDD)
3A@VIN=3.6V/VOUT=5.0V (limit≥3A)
PWM/PFM (PFM light load / PWM heavy load)
Adjustable via ext. resistors (Typ.5.0V, FB 1.25V)
±2% (1.25V ref)
1.0MHz (0.8~1.2MHz)
External enhancement-mode N-channel power MOSFET (external); RDS(on) not specified
SOT23-6
ST21592.5V~5.5V
1A
PWM (current mode)
Adjustable up to 12V (ref 0.6V)
±2% (reference accuracy)
650KHz (0.5~0.8MHz)
Built-in power MOSFET: RDS(on)=0.18Ω, 2A/16V
SOT23-6
ST21100.9V~6.0V
100mA@VIN=1.2V/VOUT=1.9V
PFM
1.8V~6.0V (0.1V step)
±2%
360KHz (TYP. ST2110C25; per-version 150/310/360KHz)
Build-in transistor; RDS(on) not specified
SOT89-3, SOT23-5, SOT23-3
ST21090.9V~6V
-
PWM/PFM (switching control)
1.5V~6.5V (ST2109F FB=1.25V)
±2%
300KHz (255~345KHz)
External N-channel power MOSFET (low RDSon, external); RDS(on) determined by external FET
SOT23-5
ST21070.9V~5.5V
>300mA(Max)
Synchronous PFM
1.8V~5.0V (0.1V step)
±2%
320KHz
Built-in power switch + synchronous rectification; RDS(on) not specified
SOT23-5