S-8551 Description
STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS S-8550/8551 Series The S-8550/8551 Series is a CMOS synchronous rectification step-down switching regulator which mainly consists of a reference voltage circuit, an oscillator, an error amplifier, a phase pensation circuit, a PWM controller, an under voltage lockout circuit (UVLO), a current limit circuit, and a power MOS FET. The...
S-8551 Key Features
- Oscillation frequency : 1.2 MHz
- Input voltage range : 2.0 to 5.5 V
- Output voltage range : Arbitrarily settable by external output voltage setting resistor
- Output current : 600 mA
- Reference voltage : 0.6 V ±2.0%
- Efficiency : 92%
- Soft-start function : 1 ms typ
- Shutdown function : Shutdown current consumption : 1.0 µA max
- Built-in current limit circuit
- Pch power MOS FET on-resistance : 0.4 Ω typ