a8434 Allegro MicroSystems, Inc., a8434 Datasheet - Page 2

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

A8434
Ab so lute Max i mum Rat ings
Input or Output Voltage
VOUT Short Circuit to GND ....................................................Continuous
Operating Ambient Temperature, T
Junction Temperature, T
Storage Temperature, T
VIN, VOUT, C1+, C1– , C2+, C2– to GND ..................... –0.3 to 6 V
All other pins ..................................................... –0.3 to V
CIN
1 μF
RSET
ENM
ENS
ISET
*Contact Allegro for additional packing options.
VIN
Use the following complete part number when ordering:
J(max)
S
................................................... –55°C to 150°C
A8434EESTR-T
.............................................................. 150°C
Part Number
A
..................................... –40°C to 85°C
−
Control, Clock,
and Reference
Current Mirror
GND
C1+
Functional Block Diagram
7-in. reel, 1500 pieces/reel
6-Channel High Efficiency Charge Pump
+ −
IN
Packaging*
Fractional Charge Pump
+ 0.3 V
1 μF
C1 −
C1
(1×, 1.5×, and 2×)
+ −
C2+
+
−
The device package is lead (Pb) free, with 100% matte tin
leadframe plating.
Package Thermal Characteristics
R
Additional information is available on the Allegro Web site.
θJA
+ −
= 47 °C/W, on a 4-layer board based on JEDEC spec
Minimum Select
1 μF
C2−
C2
+ −
ES, 3 × 3 mm MLP-16
+ −
Package Type
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
White LED Driver
+ −
LED1
LED2
LED4
LED5
VOUT
LED3
LED6
COUT
1 μF
2