MP20043
The Future of Analog IC Technology
Dual Channel, 300mA Linear
Regulator With Programmable
Output Voltage and Output Discharge
FEATURES
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Programmable Output Voltage
Up to 300mA Output Current (Each LDO)
60mV Dropout at 100mA Load
Dual Shutdown Pins Control Each Output
75dB PSRR at 1kHz
7μVRMS Low Noise Output
Current Limiting and Thermal Protection
Short Circuit Protection
Two LDOs in TQFN8 (2mm×2mm) Package
Output Load Discharge when Disabled
Cellular Phones
Battery-powered Equipment
Laptop, Notebook, and Palmtop Computers
Hand-held Equipment
Wireless LAN
DESCRIPTION
The MP20043 is a dual-channel, low noise, low
dropout and high PSRR linear regulator with
programmable output voltage. The output
voltage of MP20043 ranges from 1.2V to 3.3V
in 100mV increments and 2.5% accuracy by
operating from a +2.5V to +5.5V input. The
different output voltage options can be
programmed by setting the voltage of P1 and
P2 to VDD, GND or floating. There are 9
different voltage settings in one chip. Each
output channel can supply up to 300mA of load
current.
The MP20043 uses two internal PMOSs as the
pass devices, which consumes 150μA supply
current when both channels are enabled at no
load condition. The EN1 and EN2 pins control
each output respectively. When both channels
shutdown simultaneously, the chip turns off and
consumes nearly zero operation current which
is suitable for battery-power devices. The
MP20043 also features current limiting and over
temperature protection.
It is available in a TQFN8 (2mm×2mm) package
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V
IN
VIN
VOUT1
V
OUT1
MP20043
P1
P2
EN1
EN2
GND
Chip Enable
VOUT2
V
OUT2
MP20043 Rev.0.91
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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