AP2403 Datasheet, PDF (1/20 Pages) HuaXinAn Electronics CO.,LTD – Current-Mode PWM Step-Down DC-DC Converter

[AP2403]
AP2403
Current-Mode PWM Step-Down DC-DC Converter
1. Genaral Description
The AP2403 is a Current-Mode Synchronous Step-Down DC-DC Converter with excellent transient
response. The output voltage is selectable from the range of 0.8V to 5.0V by an external resistor. The input
voltage ranges from 3.0V to 5.5V which is most suitable to generate a 1.0V, a 1.2V, and a 1.8V power
supplies. Power MOSFETs are built in the AP2403; the maximum output current of the AP2403 is 2.5A. The
switching frequency is selectable from 300 kHz to 4 MHz by the external resistor. For the protections, the
AP2403 has Over-Current protection, Low-Input Voltage protection, Thermal protection and Power-Good
function.
2. Features
1. Input Voltage Range: Vin = 3.0V to 5.5V
2. Output Voltage Range: Vout = 0.8V to 5.0V
(by the external resistor)
3. Maximum Output Load Current: Iout(max) = 2.5A
http://akm.transim.com/
4. Operation Temperature: Ta = -40C to 105C
5. Switching Frequency: 300kHz to 4MHz (Selectable by an external resistor and
External Synchronous Mode is available by an external clock)
6. Internal Reference Voltage: 0.6V 1.5%
7. Maximum Duty:
100%
8. Low Input Voltage Protection
9. Power-Good Function
10. Over-Current Protection (Automatic recovery type)
11. Thermal Protection
12. Soft Start Function
13. Package: 16-pin HTSSOP
MS1528-E-02
-1-
2014/01