a8434 Allegro MicroSystems, Inc., a8434 Datasheet - Page 6

• Manufacturer Part Number: a8434
• Description: 6-channel High Efficiency Charge Pump White Led Driver
• Manufacturer: Allegro MicroSystems, Inc.

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