AP5100_1011 Datasheet, PDF (2/10 Pages) Diodes Incorporated – 1.2A Step-Down Converter with 1.4MHz Switching Frequency

AP5100
1.2A Step-Down Converter with 1.4MHz Switching
Frequency
Typical Application Circuit (continiued)
V_IN
C1
10µF
25V
R3
100kohm
OFF ON
5 _IN
BST ¹
C3
22nF
6
AP5100 ^SW
D1
B230A
4 _{EN GND FB 3}
L1
3.3µH
R1
49.9kohm
R2
16.2kohm
V_OUT
3.3V
C6
100pF _C2
22µF
6.3V
Figure 3. 1.4MHz, 3.3V Output at 1A Step-Down Converter
V_IN
6V -12V
C1
10µF
25V
R3
100Kohm
OFF ON
5 _IN
BST ¹
C3
L1
AP5100 SW
10nF
10µH
6
D1
1N5819HW-7
- Vout
- Vout
4 _{EN GND FB 3}
R4
- Vout
200Kohm
1%
R2
40 ohm
1%
- Vout
Figure 4. White LED Driver Application
C2
10µF
16V
LED1
LED 2
LED 3
AP5100
Document number: DS32130 Rev. 2 - 2
2 of 10
www.diodes.com
November 2010
© Diodes Incorporated