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G5603

Global Mixed-mode Technology
Part Number G5603
Manufacturer Global Mixed-mode Technology
Description High-Speed Step-Down Controller
Published May 16, 2015
Detailed Description Global Mixed-mode Technology Inc. G5603 High-Speed Step-Down Controller Features „ Ultra-High Efficiency „ No Current...
Datasheet PDF File G5603 PDF File

G5603
G5603

Overview
Global Mixed-mode Technology Inc.
G5603 High-Speed Step-Down Controller 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 „ 4.
5V to 24V Battery Input Range „ Integrated Boost Diode „ OVP & UVP „ 1.
7ms Soft-Start „ Drives Large Synchronous-Rectifier FETs „ Power-Good Indicator Applications „ Notebook Computers „ CPU Core Supply „ I/O Supply „ Chipset/RAM Supply as Low as 0.
75V „ Networking Power Supply General Description G5603 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 G5603 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 G5603 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.
75V.
The G5603 is available in TSSOP-14 、 TQFN3X3-16 and TQFN3.
5X3.
5-14 package and includes over voltage protection.
Ordering Information ORDER NUMBER MARKING G5603D21U G5603 G5603R41U 5603 G5603RU1U 5603 Note: D2: TSSOP-14 RU: TQFN3.
5x3.
5-14 R4: TQFN3X3-16 1: Bonding Code U : Tape & Reel TEMP.
RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C Pin Configuration PACKAGE (Green) TSSOP-14 TQFN3X3-16 TQFN3.
5x3.
5-14 13 DH 12 LX 11 ILIM 10 VDD 9 DL 16 TON 15 EN_SKIP 14 NC 13 BST EN_SKIP 1 TON 2 OUT 3 VCC 4 FB 5 PGOOD 6 AGND 7 G5603 TSSOP-14 14 BST 13 DH 1...


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