Datasheet SC197ULTRT - Semtech IC, DC-DC CONV, 3.5 MHz, MLPQ-18

Part Number: SC197ULTRT

Detailed Description

Manufacturer: Semtech

Description: IC, DC-DC CONV, 3.5 MHz, MLPQ-18

Docket:
SC197
3.5MHz, 500mA Synchronous Dual Step-Down DC-DC Regulator
POWER MANAGEMENT Features
Description
The SC197 contains two identical high efficiency 500mA step-down regulators designed for use in batterypowered applications.

Each regulator includes 15 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 different levels. Pulling all four control pins low disables the output. The SC197 operates at a fixed 3.5MHz switching frequency in normal PWM (Pulse-Width Modulation) mode. A variable frequency PSAVE (Power Save) mode is used to optimize efficiency at light loads for each output setting. Built-in hysteresis prevents chattering between the two modes. The SC197 provides several protection features to safeguard the device under stressed conditions. These include short circuit protection, over-tempe

Specifications:

Number of Outputs: 1
Number of Pins: 18
Operating Temperature Range: -40°C to +85°C
Output Current: 500 mA
Output Voltage: 3.3 V
Primary Input Voltage: 5.5 V
Switching Frequency Max: 3.5 MHz