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1. Description
The PAM2303BECADJR is a 3A step-down DC-DC converter. It operates in two different modes: PSM and PWM modes. At light load, it automactically enters into the PSM mode to improve efficiency. At heavy load, the constant frequency PWM control performs excellent stability and transient response. No external compensation components are required. The PAM2303 supports a range of input voltages from 2.7V to 5.5V. The output voltage is adjustable from 0.6V to the input voltage. The PAM2303 employs internal power switch and synchronous rectifier to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output and the shutdown current is less than 1µA. Other key features include overtemperature and short circuit protection, and under-voltage lockout to prevent deep battery discharge. The PAM2303 delivers 3A maximum output current while consuming only 42µA of no-load quiescent current. Ultra-Low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the PAM2303 an ideal choice for high-output voltage, high-current applications which require a low dropout threshold. The PAM2303 is available in SOP-8(EP), DFN3X3-10 and QFN3X3- 16 package.
2. Features
1. Output Current: Up to 3A
2. Output Voltage: 0.6V to VIN
3. Input Voltage: 2.7 to 5.5V
4. Efficiency up to 95%
5. 42µA (typ) No Load Quiescent Current
6. Shutdown Current: <1A
7. 100% Duty Cycle Operation
8. 1.5MHz Switching Frequency
9. Analog Soft Start
10. No external Compensation Required
11. Current Limit Protection
12. Thermal Shutdown
13. SOP-8(EP), DFN3X3-10 and QFN3X3-16 Package
3. Applications
1. 5V or 3.3V Point of Load Conversion
2. Telecom/Networking Equipment
3. Set Top Boxes
4. Storage Equipment
5. Video Cards
6. DDR Power Supply
4. Pin Assignments
5. Pin Descriptions
