Datasheet4U Logo Datasheet4U.com

SC4603 - High Efficiency Synchronous Buck

General Description

The SC4603 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from input supply range 2.25V to 5.5V.

Key Features

  • ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ BICMOS voltage mode PWM controller 2.25V to 5.5V Input voltage range Output voltages as low as 0.5V Sleep mode (Icc = 10µA typ) Lossless adjustable overcurrent protection Combination pulse by pulse & hiccup mode current limit High efficiency synchronous switching 0% to 100% Duty cycle range Synchronization to external clock Asynchronous start-up 1MHz frequency of operation 10-Pin MSOP surface mount package.

📥 Download Datasheet

Datasheet Details

Part number SC4603
Manufacturer SEMTECH
File Size 360.13 KB
Description High Efficiency Synchronous Buck
Datasheet download datasheet SC4603 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
SC4616 Programmable Linear Output Hall Effect Sensor Semiment
SC46208 HIGH EFFICIENCY SYNCHRONOUS STEP-DOWN DC-DC CONVERTER Silan Microelectronics
SC4624A 4A Integrated FET Synchronous Step down DC/DC Regulator Semtech
SC4625 1.7MHz High Efficiency Monolithic 0.5A Synchronous Buck Converter Semtech
SC464 Motherboard Clock International Microcircuits

Other Datasheets by SEMTECH

Part Number Description
SC4601 Step Down Controller
SC4602A Step Down Controller
SC4602B Step Down Controller
SC4605 Step Down Controller
SC4607 High Efficiency Synchronous Buck

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Very Low Input, MHz Operation, High Efficiency Synchronous Buck POWER MANAGEMENT Description The SC4603 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from input supply range 2.25V to 5.5V. A high level of integration reduces external component count and makes it suitable for low voltage applications where cost, size and efficiency are critical. The SC4603 drives external complementary power MOSFETs; P-channel on the high side and N-channel on www.DataSheet4U.com the low side. The use of high side P-channel MOSFETs eliminates the need for an external charge pump and simplifies the high side gate driver. Non-overlap protection is provided for the gate drive signals to prevent shoot through of the MOSFET pair.