1.5A Step-down Converter
Description
Preliminary Datasheet
LP6302
1.
5MHz, 1.
5A Step-down Converter With Soft-Start
General Description
The LP6302 contains two independent 1.
5MHz constant frequency, current mode, PWM step-down converters.
The converter integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode.
The LP6302 is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery.
The converter can supply 1200mA of load current from a 2.
5V to 5.
5V input voltage.
The output voltage can be regulated as low as 0.
6V.
The LP6302 can also run at 100% duty cycle for low dropout applications.
The LP6302 is available in a 16-lead 3mm*3mm TDFN package and is rated over the -40°C to 85°C temperature range.
Order Information
LP6302 - □ □ □ □
F: Pb-Free Package Type QV: TDFN-12
Type: Vout1/Vout2 B: 1.
8V/1.
2V C: 3.
3V/1.
2V D: 3.
3V/1.
8V A: Adjustable
Features
Input Voltage Range: 2.
5V to 5.
5V Output Voltage Range: 0.
6V to VIN 1200mA Load Current on Each Channel Up to 95% Efficiency 100% Duty Cycle in Dropout < 1 u A Quiescent Current 1.
5MHz Switching Frequency Soft star Function Short Circuit Protection Current Mode Operation Thermal Fault Protection 3 m m × 3 m m TDFN-12 Package RoHS Compliant and 100% Lead (Pb)-Free
Typical Application Circuit
Applications
Portable Media Players Cellular and Smart mobile phone PDA/DSC
GPS Applications
Marking Information
Please see website.
LP6302 – Ver.
1.
0 Datasheet Sep.
-2007
Preliminary Datasheet Functional Pin Description
LP6302
Pin Description
Pin NO
PIN
VIN2
1
SW2
2
GND
3,9
FB1/VOUT1 4
NC1,NC2
5,11
VIN2
1
EN1 6
VIN1
7
SW1
8
FB2/VOUT2 10
EN2 12
Power Input of Channel 2.
DESCRIPTION
Pin for Switching of Channel 2.
Ground.
Feedback/Output Voltage Pin of Channel 1.
No Connection or Connect to VIN.
Power Input of Channel 2.
Chip Enable of Channel 1 (Active High).
VEN1 ≤ VIN1.
Power Input of Channel 1.
Pin for Switching of Chan...
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