FDMF6730 Datasheet, PDF (1/10 Pages) Fairchild Semiconductor – Driver plus FET Multi-chip Module

August 2008
FDMF6730
Driver plus FET Multi-chip Module
Features
Over 95% efficiency
Internal 5V regulator for gate drive
6V-16V input range
1MHz max operating frequency
SMOD operation capability for light load efficiency
5A current capability (10A with PASS FET)
Current limit set by R_DSON sensing to minimize power losses
Integrated bootstrap diode
Applications
Ultra Mobile PC
Notebook Computers
General Description
The FDMF6730 is a high efficiency Driver plus MOSFET power
stage solution optimized for Ultra Mobile PC (UMPC) system
power voltage supplies. It is fully compliant with the Intel Ultra-
Mobile Driver MOS (uDrMOS) Specification. The MOSFETs and
driver have been optimized to perform with high efficiency at
light and medium loads, ideal for compact PC devices.
The internal driver IC integrates two highly efficient LDOs for
internal gate-drive and external circuitry. The bootstrap diode is
also integrated within the IC. When operating with a single low
side MOSFET the uDrMOS module is capable of delivering up
to 5A of continuous current. The PASS transistor may be easily
routed in parallel with the low side MOSFET to provide up to
10A. The module also incorporates an over current protection
flag from an R_DSON current sense architecture.
The device comes in a 6X6 Power QFN package for improved
thermal performance.
Typical Application
LDO 5V OUT
LDO ENABLE
LDO OUT
PW M OUT
VCC
LDO 5V
VIN
BOOT
LDO EN
VSWH
LDO OUT
FDMF6730
LDO ADJ
PGND
LDRV
DRIVE HS
G_PASS
DRIVE LS
CS_OUT
D_PASS
CGND
CS_PROG S_PASS
VIN
VOUT
Figure 1. Power Train Application Circuit
Ordering Information
Part
FDMF6730
Current Rating
Max
[A]
10
Input Voltage
Typical
[V]
6-16
Frequency
Max
[KHz]
1000
©2008 Fairchild Semiconductor Corporation
1
FDMF6730 Rev. D2
Device
Marking
FDMF6730
www.fairchildsemi.com