Diodes AP3031 - Manual (Page 2)

Data Sheet
2
Dec. 2012 Rev. 1. 6 BCD Semiconductor Manufacturing Limited
WHITE LED STEP-UP CONVERTER AP3031
Figure 2. Pin Configuration of AP3031 (Top View)
Pin Configuration
Pin Description
Pin Number
Pin Name Function
6-Pin 8-Pin
1 4 SW Switch Pin. Connect external inductor and Schottky
2 2, 3, 6 GND Ground Pin
3 1 FB Voltage Feedback Pin. Reference voltage is 200mV
4 8 CTRL
Enable and Dimming Control Pin. Connect to a high input to enable the IC or a low input to
disable the IC.
If logic low time is
more than about 0.7ms and then enable the IC, the AP3031 will soft start to
protect system departments. If logic low time is less than about 0.7ms and then enable the IC,
the AP3031 will hold on standby mode and start directly to achieve high frequency dimming
5 7 OV Over-voltage Protection Input Pin. Connect to the output directly. On OVP condition, the out-
put voltage will be clamped
6 5 V
IN
Input Supply Pin. Must be locally bypassed
(SOT-23-6/TSOT-23-6)
SW
GND
FB
V
IN
OV
CTRL
K/KT Package
(SOIC-8)
M Package
1
2
3
4
8
7
6
5 SW
GND
FB
GND
V
IN
OV
CTRL
GND
1
2
3 4
5
Pin 1 Mark
6