
Preliminary Datasheet
Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M
Mar. 2013 Rev. 1.0 BCD Semiconductor Manufacturing Limited
2
Pin Configuration
DN Package
(DFN-3×3-10)
Figure 2. Pin Configuration of AP3427M (Top View)
Pin Description
Pin Number Pin Name Function
1 EN1 Enable signal input of channel 1, active high
2 FB1 Feedback voltage of channel 1
3 VIN2 Power supply input of channel 2
4, 9, Exposed Pad GND GND. It should be connected to system ground
5 LX2 Connected from channel 2’s Power MOSFET to inductor
6 EN2 Enable signal input of channel 2, active high
7 FB2 Feedback voltage of channel 2
8 VIN1 Power supply input of channel 1
10 LX1 Connected from channel 1’s Power MOSFET to inductor
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