SC202F中文资料开关调节器数据手册Semtech规格书

描述 Description

The SC202F is a high effi ciency 500mA step-down regulator that includes an integrated inductor inside the package. The input voltage range makes it ideal for battery operated applications with space limitations. The SC202F operates at a fi xed 3.5MHz switching frequency in normal PWM (Pulse-Width Modulation) mode. The SC202F also includes fifteen programmable output voltage settings that can be selected using the four control pins, eliminating the need for external feedback resistors. The output voltage can be fixed to a single setting or dynamically switched between diff erent levels. Pulling all four control pins low disables the output.

特性 Features

·Input Voltage — 2.9V to 5.5V
·Output Voltage — 0.8V to 3.3V
·Output current capability — 500mA
·Internal inductor
·15 programmable output voltages
·Fast transient response
·Temperature range — -40 to +85°C
·Oscillator frequency — 3.5MHz
·100% duty cycle capability
·Quiescent current — 11mA typ
·Shutdown current — 0.1μA typ
·Internal soft-start
·Over-voltage protection
·Current limit and short circuit protection
·Over-temperature protection
·Under-voltage lockout
·Floating control pin protection
·MLPQ-13 — 2.5 x 3.0 x 1.0 (mm) package
·Lead-free and halogen-free
·WEEE and RoHS compliant

应用 Application

·Optical modules, GN1157B, GN1599 etc
·Set top boxes
·Telecommunication equipment
·Power rails demand small voltage ripple and compact size