PT1322
PT1322 is 2A Step-up DC/DC Converter manufactured by PowTech.
High Efficiency 1MHz, 2A Step-up DC/DC Converter
GENERAL DESCRIPTION
The PT1322 is a highly efficiency, current mode control step-up DC/DC converter with an integrated 120mΩ RDS(ON) N-channel MOSFET. The fixed 1MHz switching frequency and internal pensation circuitry reduce external ponent count and save the PCB space. The built-in
Features
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- Input Voltage Operating Range: 2.7 V to 5.5 V 1MHz Constant Frequency Operation Minimum on time: 100ns typical Minimum off time: 100ns typical Maximum output voltage: 6V Low RDS(ON): 120mΩ SOT23-6 Package internal soft-start circuitry minimizes the inrush current at start-up. SOT23-6 package. The PT1322 is available in
APPLICATIONS
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- Cell Phone and Smart Phone PDA, PMP, MP3 Digital Still Cameras
ORDERING INFORMATION
PACKAGE SOT23-6 TEMPERATURE RANGE -40 ˚C ~ +85 ˚C ORDERING PART NUMBER PT1322E23F TRANSPORT MEDIA Tape and Reel 3000 units MARKING 1322
TYPICAL APPLICATION CIRCUIT 1
CR Powtech (Shanghai) Co., Ltd.
PT1322_DS Rev EN 1.0
.CRPOWTECH.
Page 1
High Efficiency 1MHz, 2A Step-up DC/DC Converter
TYPICAL APPLICATION CIRCUIT 2
PIN ASSIGNMENT
Top View
LX 1 6 NC
SOT23-6
GND 2 FB 3
5 IN 4 EN
PIN DESCRIPTIONS
PIN NUM 1 2 3 4 5 6 PIN NAME
LX GND
DESCRIPTIONS Inductor node. Chip Ground. Feedback pin. Connect a resistor R1 between VOUT and FB, and a resistor R2 between FB and GND to program the output voltage: VOUT = 0.6V- (R1/R2+1). Chip Enable. Power Input. No Connection. Active High. Do not leave it floating. Connect an inductor between IN pin and LX...
