A8435EESTR-T Allegro Microsystems Inc, A8435EESTR-T Datasheet - Page 3

• Manufacturer Part Number: A8435EESTR-T
• Description: IC,Laser Diode/LED Driver,LLCC,16PIN,PLASTIC
• Manufacturer: Allegro Microsystems Inc
• Type: Backlight, White LED (Serial Interface)r

Specifications of A8435EESTR-T

• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 4
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-WFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 620-1124-2

A8435
*Contact Allegro for additional packing options.
Ab so lute Max i mum Rat ings
Input or Output Voltage
VOUT Short Circuit to GND ....................................................Continuous
Operating Ambient Temperature, T
Maximum Junction Temperature, T
Storage Temperature, T
Selection Guide
VIN, VOUT, C1+, C1–, C2+, and C2– pins ..................... –0.3 to 6 V
All other pins ..................................................... –0.3 to V
A8435EESTR-T
Part Number
CIN
1 µF
RSET
S
CTRL
................................................... –55°C to 150°C
ISET
EN1
EN2
VIN
A
J(max)
..................................... –40°C to 85°C
7-in. reel, 1500 pieces/reel
............................................. 150°C
–
Control, Clock,
and Reference
Packaging*
Current Mirror
GND
High Efficiency Charge Pump White LED Driver
C1+
Functional Block Diagram
IN
+ –
+ 0.3 V
Fractional Charge Pump
1 µF
C1 –
C1
+ –
Package Thermal Characteristics
R
Additional information is available on the Allegro Web site.
Package is lead (Pb) free, with 100% matte tin leadframe plating.
(1× and 1.5×)
ES, 3 × 3 mm QFN/MLP-16
θJA
Minimum Select
C2+
+
–
= 47 °C/W, on a 4-layer board based on JEDEC spec
Package Type
+ –
1 µF
C2–
C2
+ –
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
LED1
VOUT
LED2
LED4
LED3
COUT
1 µF
2