LC5205D datasheet(3/15 Pages) ALLEGRO

3 / 15 page

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

48102.002

LED Drivers

LC5200 Series

0.5

1.5

100

125

150

Ambient Temperature, TA (°C)

PD = 1.73 W

RθJA = 72°C/W

Power Dissipation versus Ambient Temperature

ELECTRICAL CHARACTERISTICS Valid at TA = 25°C and VBB = 140 V, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Supply Voltage Input Current

IBB

Normal operation

–

IBBS

At output off

–

0.6

MOSFET Breakdown Voltage

VDSS

ID = 1 mA

450

–

MOSFET On-Voltage

VDS(on)

ID = 0.5 A, LC5205

–

ID = 1.0 A, LC5210

–

2.5

–

MOSFET Diode Forward Voltage

ID = 0.5 A, LC5205

–

0.85

–

ID = 1.0 A, LC5210

–

0.9

–

REG Pin Output Voltage

VREG

IREG = 0 mA

11.5

12.5

REG Pin Maximum Output Current

IREG

VREG = 11.5 V

–

Maximum PWM Operating Frequency

fclk

PWM frequency

–

200

kHz

REF Pin Input Voltage

VREF

0–1

REF Pin Input Current

IREF

–

±10

–

μA

SENSE Pin Voltage

VRS

VREF

– 0.03

VREF

+ 0.03

SENSE Pin Current

IRS

–

±10

–

μA

OCP Threshold Voltage

VOCP

Measured at SENSE pin

–

PWM Off-Time

TPOFF

RTOFF = 560 kΩ, CTOFF = 220 pF

–

μs

UVLO On Threshold Voltage

VUVLO(on)

For VBB

–13–

UVLO Off Threshold Voltage

VUVLO(off)

For VBB

–14–

TSD Threshold Temperature

TTSD

Main controller IC (MIC) temperature

–

150

–

°C

TSD Hysteresis Temperature

TTSDhys

–55–

°C

Switching Time

ID = 0.4 A

–

ID = 0.4 A

–

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