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G5719B

Global Mixed-mode Technology
Part Number G5719B
Manufacturer Global Mixed-mode Technology
Description 3A Synchronous Step-Down Regulator
Published Jan 10, 2016
Detailed Description Global Mixed-mode Technology G5719B 1MHz, 3A Synchronous Step-Down Regulator Features „ High Efficiency: Up to 95% „ ...
Datasheet PDF File G5719B PDF File

G5719B
G5719B

Overview
Global Mixed-mode Technology G5719B 1MHz, 3A Synchronous Step-Down Regulator Features „ High Efficiency: Up to 95% „ Low Quiescent Current: Only 50µA During Opera- tion „ Internal Soft Start Function „ Output Current G5719BTB1U: 2A Continuous, 3A Peak G5719BRC1U: 3A Continuous „ 2.
5V to 6V Input Voltage Range „ 1MHz Switching Frequency „ No Schottky Diode Required „ 100% Duty Cycle in Dropout Operation „ 0.
6V Reference Allows Low Output Voltages „ <1µA Shutdown Current „ Current Mode Operation for Excellent Line and Load Transient Response „ Over Temperature Protected „ RoHS Compliant „ Power Good „ Output Short Circuit Latch-off Protection „ Output Overvoltage Latch-off Protection Applications „ Cellular Telephones „ Personal Information Appliances „ Microprocessors and DSP Core Supplies „ Wireless and DSL Modems „ Digital Still and Video Cameras „ MP3 Players „ Portable Instruments General Description The G5719B is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture.
Supply current during operation is only 50µA and drops to <1µA in shutdown.
The 2.
5V to 6V input voltage range makes the G5719B ideally suited for single Li-Ion battery-powered applications.
100% duty cycle provides low dropout operation, extending battery run time in portable systems.
Switching frequency is internally set at 1MHz, allowing the use of small surface mount inductors and capacitors.
The internal synchronous switch increase efficiency and eliminates the need for an external Schottky diode.
Built-in soft start function eliminates in-rush current that could damage the system.
Output latch-off operation protects the step-down regulator from damage under short circuit and overvoltage conditions.
Ordering Information ORDER NUMBER MARKING OUTPUT VOLTAGE G5719BT11U 519Bx Adjustable G5719BTB1U 519Bx Adjustable G5719BRC1U 519B Adjustable Note: T1: SOT-23-5 TB: SOT-23-6 RC: TDFN2X2-8 1: Bonding Code U: Tape & Reel TEMP.
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