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G5617A

Global Mixed-mode Technology
Part Number G5617A
Manufacturer Global Mixed-mode Technology
Description Programmable Output High-Speed Step-Down Controller
Published Jan 10, 2016
Detailed Description Global Mixed-mode Technology G5617A/G5617B Programmable Output High-Speed Step-Down Controller for Notebook Computer ...
Datasheet PDF File G5617A PDF File

G5617A
G5617A

Overview
Global Mixed-mode Technology G5617A/G5617B Programmable Output High-Speed Step-Down Controller for Notebook Computer Features „ Ultra-High Efficiency „ No Current-Sense Resistor (Lossless ILIMIT) „ Quasi-PWM with 100ns Load-Step Response „ 1% VOUT Accuracy Over Line and Load „ 0.
75V to 3.
6V Adjustable Output Range „ Dynamic Voltage Scaling by G0 and G1 Inputs „ 4.
5V to 24V Battery Input Range „ OVP & UVP „ Built-in BST Diode „ 1.
7ms Soft-Start „ Drives Large Synchronous-Rectifier FETs „ Power-Good Indicator „ G0/G1 High Active (G5617A) G0/G1 Low Active (G5617B) Applications „ Notebook Computers „ CPU Core Supply „ Chipset/RAM Supply as Low as 0.
75V „ 1.
8V and 2.
5V I/O Supply „ Networking Power Supply Ordering Information ORDER NUMBER G5617AR41U G5617BR41U Note:R4:TQFN3X3-16 1: Bonding Code U: Tape & Reel Pin Configuration MARKING 5617A 5617B General Description G5617A/G5617B PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.
The G5617A/G5617B achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs.
Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs.
Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency.
Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size.
The G5617A/G5617B is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.
75V.
It provides four resistor-programmable output voltages by G0 and G1 digital inputs.
The G5617A/G5617B is available in 16-pin TQFN (3X3) package.
TEMP.
RANGE -40°C to +85°C -40°C to +85°C PACKAGE (Green) TQFN3X3-16 TQFN3X3-16 16...


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