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G5601A

Global Mixed-mode Technology
Part Number G5601A
Manufacturer Global Mixed-mode Technology
Description High-Speed Step-Down Controller
Published Jan 10, 2016
Detailed Description Global Mixed-mode Technology Inc. G5601A High-Speed Step-Down Controller with LDO Con- troller for Notebook Computer ...
Datasheet PDF File G5601A PDF File

G5601A
G5601A

Overview
Global Mixed-mode Technology Inc.
G5601A High-Speed Step-Down Controller with LDO Con- troller for Notebook Computer Features --PWM Controller „ 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 „ 4.
5V to 24V Battery Input Range „ OVP & UVP „ 1.
7ms Soft-Start „ Drives Large Synchronous-Rectifier FETs „ Power-Good Indicator --LDO Controller „ 1.
5% Accuracy Over Line and Load „ Adjustable Output down to 0.
75V „ Independent Enable and Power Good Indicator „ Drives N-channel MOSFET within Rail to Rail Controller Voltage „ MLCC and POSCAP Stable 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 Pin Configuration General Description G5601A 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 G5601A 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 G5601A is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.
75V.
G5601A LDO controller can drive an external NMOSFET to provide a second output voltage from PWM output or other power source.
It is adjusted output from 0.
75V.
The independent enable input, open-drain power good indicator, under-voltage protection and soft-start...


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