AAT1130 Datasheet, PDF (2/18 Pages) Advanced Analogic Technologies – 2.5MHz 500mA Step-Down DC/DC Converter

DATA SHEET
AAT1130
2.5MHz 400mA Step-Down DC/DC Converter
Pin Descriptions
Pin #
1
2
3
4
5
6
7, 8, 9, 10
Symbol
FB
VOUT
VCC
VP
LX
EN
GND
Function
Output voltage feedback input. FB senses the output voltage through a resistor voltage divider circuit.
Connect the voltage divider from the output voltage to FB. The feedback threshold is 0.6V.
Output voltage sense input. VOUT senses the output voltage. Connect VOUT to the output voltage node
for proper on-time calculation.
Input supply voltage. Connect VCC to the input supply voltage.
Power input supply voltage. Connect VP to the VCC pin, and to the input supply voltage. Bypass VP to
GND with a 2.2μF or greater ceramic capacitor.
Switching node. Connect the LC filter between LX and the load. LX is internally connected to the drain of
the p-channel MOSFET switch and n-channel MOSFET synchronous rectifier.
Enable input. Active logic high.
Ground.
Pin Configuration
SC70JW-10
(Top View)
FB ¹
VOUT ²
VCC ³
VP ⁴
LX ⁵
10 _GND
9 _GND
8 _GND
7 _GND
6 _EN
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201977B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013