A8513 ALLEGRO [Allegro MicroSystems], A8513 Datasheet - Page 3

• Manufacturer Part Number: A8513
• Description: Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A8513
Thermal Characteristics*
Package Thermal Resistance
(Junction to Ambient)
Package Thermal Resistance
(Junction to Pad)
*To be verified by characterization. Additional thermal information available on the Allegro
Terminal List Table
EN/PWM
Characteristic
COMP
¯ F ¯ ¯ A ¯ ¯ ¯ U ¯ ¯ L ¯ ¯ T ¯
Name
GND
ISET
OVP
VDD
LED
PAD
VIN
SW
NC
1,2,8,9,16
13,14
LP
15
12
10
11
6
4
–
3
7
5
FAULT
Number
OVP
VDD
VIN
may require derating at maximum conditions, see application information
SW
NC
NC
NC
1
2
3
4
5
6
7
8
LP Package
LY
10
4
9
8
6
–
2
–
7
1
5
3
Symbol
PAD
R
R
θJP
θJA
Output of the error amplifier and compensation node. Connect compensation network from
this pin to GND for control loop compensation.
This pin is used to indicate fault conditions. Logic low indicates that the A8513 has
a fault present.
Ground.
Connect the R
Connect the cathode of the LED string to this pin.
No connection.
This pin is used to sense an overvoltage condition. Connect a resistive divider from the
VOUT node to this pin to adjust the Overvoltage Protection (OVP).
Exposed pad of the package providing enhanced thermal dissipation. This pad must be
connected to the ground plane(s) of the PCB with at least 8 thermal vias, directly in the pad.
PWM dimming pin. Used to control LED intensity by using pulse width modulation.
The drain of the internal NMOS switch of the boost converter.
Output of internal LDO. Connect a 0.1 μF decoupling capacitor between this pin and GND.
Input power to the A8513.
16
15
14
13
12
11
10
9
Wide Input Voltage Range, High Efficiency
NC
COMP
GND
GND
ISET
EN/PWM
LED
NC
LP package
LY package
Pin-out Diagram
ISET
resistor between this pin and GND to set the 100% LED current level.
On 4-layer PCB based on JEDEC standard
On 2-layer PCB with 3.8 in.
On 4-layer PCB based on JEDEC standard
On 2-layer PCB with 2.5 in.
Test Conditions*
FAULT
®
OVP
VDD
VIN
SW
website.
Function
Fault Tolerant LED Driver
1
2
3
4
5
LY Package
PAD
2
2
of copper area each side
of copper area each side
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
10
9
8
7
6
COMP
GND
ISET
EN/PWM
LED
Value
34
43
48
48
2
ºC/W
ºC/W
ºC/W
ºC/W
ºC/W
Unit
3