Product Brief, 09-Nov-07
Advanced Information - All Information Subject to Change
ACT8750
Six Channel Integrated Power Management IC
for Handheld Portable Equipment
FEATURES
•
Multiple Patents Pending
•
Six Integrated Regulators
−
350mA PWM Step-Down DC/DC
−
550mA PWM Step-Down DC/DC
−
Step-Up DC/DC with OVP for WLED Bias
−
150mA Low Noise LDO
−
150mA Low Noise LDO
−
150mA Low Noise LDO
•
Minimal External Components
•
4x4mm, Thin-QFN (TQFN44-24) Package
−
Only 0.75mm Height
−
RoHS Compliant
GENERAL DESCRIPTION
The patent-pending ACT8750 is a complete, cost-
effective, highly-efficient
ActivePMU
TM
power man-
agement solution that is ideal for a wide range of
portable handheld equipment. This device inte-
grates two PWM step-down DC/DC converters, one
step-up DC/DC converter with over-voltage protec-
tion (OVP) for WLED bias, and three low dropout
linear regulators (LDOs) into a single, thin, space-
saving package.
REG1 and REG2 are fixed-frequency, current-mode
PWM step-down DC/DC converters that are opti-
mized for high efficiency and are capable of supply-
ing up to 350mA and 550mA, respectively. REG3 is
a fixed-frequency, step-up DC/DC converter that
safely and efficiently biases a string of up to seven
white-LEDs for backlighting applications. The three
LDOs are low noise, high PSRR linear regulators
capable of supplying up to 150mA each.
The ACT8750 is available in a tiny 4mm x 4mm
24-pin Thin-QFN package that is just 0.75mm thin.
APPLICATIONS
•
Portable Devices and PDAs
•
Wireless Handhelds
•
DMB Enabled Devices
•
GPS Receivers, etc.
SYSTEM BLOCK DIAGRAM
Innovative Products.
Active Solutions.
ActivePMU
TM
is a trademark of Active-Semi.
-1-
www.active-semi.com
Copyright © 2007 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
