A8518 Datasheet, PDF (3/30 Pages) Allegro MicroSystems – Fully integrated 42 V MOSFET for boost converter

A8518 and A8518-1
Wide Input Voltage Range, High-Efficiency,
Fault-Tolerant LED Driver
SPECIFICATIONS
Absolute Maximum Ratings ^[1]
Characteristic
Symbol
Notes
Rating
Unit
LEDx Pins
OVP Pin
VIN, VOUT Pins
VSENSE, GATE Pins
SW Pin ^[2]
V_LEDx
V_OVP
V_IN, V_OUT
V_SENSE, V_GATE
V_SW
x = 1 and 2
Continuous
t < 50 ns
–0.3 to 40
V
–0.3 to 40
V
–0.3 to 40
V
V_IN –7.4 to V_IN + 0.4
V
–0.6 to 42
V
–1 to 48
V
FAULT Pin
APWM, PWM, COMP, ISET, VDD Pins
V_FAULT
–0.3 to 40
V
–0.3 to 5.5
V
Operating Ambient Temperature
T_A
K temperature range
–40 to 125
°C
Maximum Junction Temperature
T_J(max)
150
°C
Storage Temperature
T_stg
–55 to 150
°C
1 _{Operation at levels beyond the ratings listed in this table may cause permanent damage to the device. The absolute maximum ratings are stress ratings only, and func-}
tional operation of the device at these or any other conditions beyond those indicated in the electrical characteristics table is not implied. Exposure to absolute maximum-
rated conditions for extended periods may affect device reliability.
2 _{SW DMOS is self-protecting and will conduct when VSW exceeds 48 V.}
THERMAL CHARACTERISTICS: May require derating at maximum conditions; see application information
Characteristic
Symbol
Test Conditions ^[3]
Value
Package Thermal Resistance
R_θJA
On 2-layer 3 in² PCB
On 4-layer PCB based on JEDEC standards
48.5
34
3 _{Additional thermal information available on the Allegro website.}
Unit
°C/W
°C/W
Allegro MicroSystems, LLC
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com