LP3202 Datasheet, PDF (1/11 Pages) Lowpower Semiconductor inc – 1.5MHz, 650mA, High Efficiency Synchronous PWM Step-Down DC/DC Convert

LP3202
1.5MHz, 650mA, High Efficiency Synchronous
PWM Step-Down DC/DC Convert
General Description
The LP3202 is a constant frequency, current mode,
PWM step-down converter. The device integrates a
main switch and a synchronous rectifier for high
efficiency. The 2.1V to 5.5V input voltage range
makes the LP3202 is ideally suited for portable
electronic devices that are powered from 1-cell
Li-ion battery or from other power sources within
the range such as cellular phones, PDAs and
handy-terminals.
Internal synchronous rectifier with low RDS(ON)
dramatically reduces conduction loss at PWM mode.
The internal synchronous switch increases
efficiency while eliminate the need for an external
Schottky diode.The switching ripple is easily
smoothed-out by small package filtering elements
due to a fixed operation frequency of 1.5MHz. This
along with small SOT-23-5 package provide small
PCB area application. Other features include soft
start, lower internal reference voltage with 2%
accuracy, over temperature protection, and over
current protection.
Ordering Information
Features
High Efficiency: 93%
1.5MHz Fixed-Frequency PWM Operation
Adjustable Output From 0.6V to VIN
1.2V, 1.5V, 1.8V, 2.5V, 2.8V and 3.3V Fixed
650mA Output Current, 1.1A Peak Current
No Schottky Diode Required
100% Duty Cycle Low Dropout Operation
Available in SOT23-5 Package
Short Circuit and Thermal Protection
Over Voltage Protection
Low than 1µA Shutdown Current
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
PDA
DSC
Wireless Card
Pin Configurations
LP3202 - □ □ □ □ □ □
F:Pb-free
Package Type
B5: SOT-23-5
Output Voltage:
12: 1.2V
18: 1.8V
25: 2.5V
28: 2.8V
33: 3.3v
Output Type:
A:Adjustable Output
Marking Information
Please See website.
LP3202-01 datasheet Oct.-2006
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