A8507ELB View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A8507ELB' PDF : 16 Pages View PDF
A8507
LED Backlight Driver for LCD Monitors and Televisions
ELECTRICAL CHARACTERISTICS (continued) Valid at VIN = 5 V; TA = 25°C, RFSET = 52 kΩ, RISET = 12.4 kΩ, except indicates
specifications guaranteed over the full operating temperature range with TA = TJ , unless otherwise noted
Characteristics
Symbol
Test Conditions
Min. Typ.1 Max. Unit
Protection Features
Thermal Shutdown Threshold
TTSD
TJ rising
– 165 –
°C
Short Circuit Detect Voltage
VSC
– 18.7 –
V
Output Overvoltage Threshold
VOVP
ROVP = 0
–
36
–
V
OVP Pin Leakage Current2
IOVPLK
VOVP = 22 V, EN = VIL
–
0.1
–
μA
Overvoltage Protection Sense Current2
IOVPH
– 240 –
μA
¯F¯¯A¯¯U¯¯L¯¯T¯ Pin Output Leakage2
IFLT
V=5V
–
–
1
μA
¯F¯¯A¯¯U¯¯L¯¯T¯ Pin Output Voltage
VOL
I = 500 μA
–
– 0.4 V
1Typical specifications are at TA = 25ºC.
2For input and output current specifications, negative current is defined as coming out of the node or pin (sourcing), positive current is defined as going
into the node or pin (sinking).
3LED accuracy is defined as (ISET × 640 – ILED(av)) / (ISET × 640), ILED(av) measured as the average of ILED1 through ILED6.
4LED current matching is defined as (ILEDx – ILED(av)) / ILED(av), with ILED(av) as defined in footnote 3.
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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