ACTIVE-SEMI ACT8750

ACT8750
Product Brief, 09-Nov-07
Advanced Information - All Information Subject to Change
Six Channel Integrated Power Management IC
for Handheld Portable Equipment
FEATURES
GENERAL DESCRIPTION
• 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
The patent-pending ACT8750 is a complete, costeffective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of
portable handheld equipment. This device integrates two PWM step-down DC/DC converters, one
step-up DC/DC converter with over-voltage protection (OVP) for WLED bias, and three low dropout
linear regulators (LDOs) into a single, thin, spacesaving package.
REG1 and REG2 are fixed-frequency, current-mode
PWM step-down DC/DC converters that are optimized for high efficiency and are capable of supplying 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.
• Minimal External Components
• 4x4mm, Thin-QFN (TQFN44-24) Package
− Only 0.75mm Height
− RoHS Compliant
APPLICATIONS
• Portable Devices and PDAs
The ACT8750 is available in a tiny 4mm x 4mm
24-pin Thin-QFN package that is just 0.75mm thin.
• Wireless Handhelds
• DMB Enabled Devices
• GPS Receivers, etc.
SYSTEM BLOCK DIAGRAM
Innovative Products. Active Solutions.
ActivePMUTM is a trademark of Active-Semi.
-1-
www.active-semi.com
Copyright © 2007 Active-Semi, Inc.
ACT8750
Product Brief, 09-Nov-07
PRODUCT OPTIONS
Block
Function
REG1
Step-Down DC/DC
Output Voltage
Capability
350mA
0.645V to 3.3V
REG2
Step-Down DC/DC
REG3
Step-Up DC/DC
REG4
LDO
REG5
LDO
REG6
LDO
550mA
Up to 27.5V
Up to 7 WLEDs
150mA
1.4V to 3.7V
150mA
150mA
: Output voltage options detailed in this table represent standard voltage options, and are available for samples or production orders.
Contact Active-Semi for more information regarding semi-custom output voltage combinations.
: Contact factory for additional available products or custom requirements.
FUNCTIONAL BLOCK DIAGRAM
Innovative Products. Active Solutions.
-2-
www.active-semi.com
Copyright © 2007 Active-Semi, Inc.