a8434 Allegro MicroSystems, Inc., a8434 Datasheet - Page 7

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

A8434
C4
C3
LED1 through LED6 ON, 1.5X Mode
V
IN
Symbol
= 3.6 V, I
C3
C4
t
OUT
V
t
Parameter
I
OUT(RIPPLE)
IN(RIPPLE)
time
= 120 mA, V
C4
C3
Tests performed using application circuit shown in figure 2
Units/Division
500 ns
20 mV
50 mA
F
T
= 3.6 V
Performance Characteristics
A
= 25°C, V
LED1 through LED6 ON, 2X Mode
V
IN
6-Channel High Efficiency Charge Pump
Symbol
= 2.7 V, I
C3
C4
t
V
OUT(RIPPLE)
I
IN(RIPPLE)
IN
= 3.6 V (unless otherwise noted)
OUT
V
Parameter
t
I
OUT(RIPPLE)
IN(RIPPLE)
time
= 120 mA, V
C3
C4
Units/Division
50 mV
500 ns
50 mA
F
= 3.6 V
LED1 through LED4 on, 1.5X Mode
V
Symbol
IN
C3
C4
= 3.6 V, I
t
V
OUT(RIPPLE)
I
IN(RIPPLE)
OUT
115 Northeast Cutoff, Box 15036
V
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
t
Parameter
I
White LED Driver
OUT(RIPPLE)
IN(RIPPLE)
time
= 80 mA, V
Units/Division
F
500 ns
20 mV
50 mA
= 3.6 V
V
OUT(RIPPLE)
I
IN(RIPPLE)
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