APW7071
Electrical Characteristics (Cont.)
Symbol
Parameter
Test Condition
OUTPUT
Vout
IFB
VFB
Adjustable output voltage range
Feedback input bias current
Feedback trip point voltage
OVP threshold
OVP hysteresis
VFB=0.3V
2.4≦VIN≦6.0V
APW7071
Min. Typ. Max. Unit
Vin
18
V
1
µA
0.237 0.25 0.263 V
16 17 18
V
5
6
7
V
Typical Application Circuit
Vin
2.7V~6V
C1
4.7µF
off on
D1
L1
MSCD052
Vout
4.7µH
6
VIN
1
SW
C2
0.1µF
2
GND
5
OVP
4
SHDN
3
FB
R1
13
Fig.1 Typical 4LED application
Vin
2.4V~6V
C1
4.7µF
off on
L1
10µH
D1
MSCD052
Vout
6
VIN
1
SW
C2
1µF
2
GND
5
OVP
4
SHDN
3
FB
R1
13
Fig.2 4LED application with
lower output voltage ripple
Copyright © ANPEC Electronics Corp.
4
Rev. A.1 - Feb., 2006
www.anpec.com.tw