G5329 Datasheet | Global Mixed-mode Technology

Features - Ultra-High Efficiency - Low Quiescent Current of 40µA - Integrated 15mΩ at V5V=5V N-Channel MOSFET for Low Side - Integrated 30mΩ at V5V=5V N-Channel MOSFET for High Side - No Current-Sense Resistor (Lossless ILIMIT) - Quasi-PWM with 100ns Load-Step Response - 1% VOUT Accuracy Over Line and Load - Programmable Switching Frequency - 0.8V to 5.5V Adjustable Output Range - 4.5V to 26V Adapter or Battery Input Range - Integrated Boost Switch - UVP (non-latch) - Over Temperature Protection (non-latch) - 3.3ms Soft-Start - Power-Good Indicator - Fixed 5V, 10m A Linear Regulator Applications - I/O Supply - Networking Power Supply Ordering Information ORDER NUMBER G5329QV1U Note: QV: QFN4X4-32 1: Bonding Code U: Tape & Reel Green: Lead Free / Halogen Free MARKING 5329 Pin Configuration General Description G5329 is a 8A, synchronous DC/DC buck converter with integrated 30mΩ N-channel high-side MOSFET and 15mΩ N-channel low-side MOSFET. It 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 G5329 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. The built-in 5V LDO supports 10m A for internal circuit. The G5329 is intended for the main power supply for the networking system or other low-voltage supplies as low as 0.8V. The G5329 is available in QFN4X4-32 package. TEMP. RANGE -40°C to +85°C PACKAGE (Green) QFN4X4-32 32 OUT 31 FB 30 TON 29 BST 28 V+ 27 NC 26 LX 25 NC V5V 1 24 V+ V+ 2 V+ AGND 3 23 V+ 22 V+ EN 4 21 V+ PGOOD 5 20 LX PGND 6...