A8434
6-Channel High Efficiency Charge Pump
White LED Driver
Tests performed using application circuit shown in figure 2
T
A
= 25°C, V
IN
= 3.6 V (unless otherwise noted)
Performance Characteristics
Turn ON LED1 through LED6 to 1X Mode
V
IN
= 4.0 V, I
OUT
= 120 mA, V
F
= 3.4 V
C2
V
ENM
and V
ENS
V
OUT
C1
I
OUT
C4
t
Symbol
C2
C1
C4
t
Parameter
V
ENM
and V
ENS
V
OUT
I
OUT
time
Units/Division
5.00 V
2.00 V
100 mA
1 ms
Turn ON LED1 through LED6 to 1.5X Mode
V
IN
= 3.0 V, I
OUT
= 120 mA, V
F
= 3.4 V
C2
V
ENM
and V
ENS
V
OUT
C1
I
OUT
C4
t
Symbol
C2
C1
C4
t
Parameter
V
ENM
and V
ENS
V
OUT
I
OUT
time
Units/Division
5.00 V
2.00 V
100 mA
1 ms
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
6
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
