A8515 Ver la hoja de datos (PDF) - Allegro MicroSystems

Número de pieza

componentes Descripción

fabricante

A8515

Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver

Allegro MicroSystems 

A8515

Wide Input Voltage Range, High Efficiency

Fault Tolerant LED Driver

ELECTRICAL CHARACTERISTICS1 (continued) Valid at VIN = 16 V, TA = 25°C, indicates specifications guaranteed by design

and characterization over the full operating temperature range with TA = TJ = –40°C to 105°C; unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.2

Max.

Unit

VSENSE Pin

VSENSE Pin Sink Current

VSENSE Trip Point

¯F¯¯A¯¯U¯¯L¯¯T¯ Pin

IADJ

VSENSEtrip

Measured between VIN and VSENSE,

RADJ = 0 Ω

18.8

20.3

21.8

μA

–

180

–

mV

¯F¯¯A¯U¯¯L¯¯T¯ Pull-Down Voltage

¯F¯¯A¯U¯¯L¯¯T¯ Pin Leakage Current

Thermal Protection (TSD)

VFAULT

IFAULTLKG

IFAULT = 1 mA (400 Ω)

VFAULT = 5 V

−

−

0.5

V

−

−

1

μA

Thermal Shutdown Threshold4

TSD

Temperature rising

−

165

−

ºC

Thermal Shutdown Hysteresis4

TSDHYS

−

20

−

ºC

1For 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).

2Typical specifications are at TA = 25ºC.

3Minimum VIN = 5 V is only required at startup. After startup is completed, the IC is able to function down to VIN = 4 V.

4Ensured by design and characterization, not production tested.

Allegro MicroSystems, Inc.

7

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Share Link: