HT7L4813 datasheet(3/10 Pages) HOLTEK

3 / 10 page

Rev. 1.00

June 26, 2015

HT7L4813

Electrical Characteristics

VCC=18V, Ta=25°C

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Power Supply (VCC Pin)

VCCON UVLOON

—

VCCOFF UVLOOFF

—

VCCHYS UVLO Hysteresis

—

VOVP

VCC OVP Trip Point

—

ISTART

Start-up Current

Before turn-on,

@ VCC=UVLOON - 1V

—

μA

Quiescent Current

No switching

—

0.6

1.0

Error Amplifier

VFB

Feedback Reference Voltage

Ta=25°C

194

200

206

Current Sense Comparator

TLEB

Leading Edge Blanking Time

—

400

—

VCL

Current Limit Threshold

—

1.1

—

VOCP

Over Current Trip Point

—

0.9

—

Over Current Release Point

—

0.2

—

Zero Current Detector

VZCDH

Upper Clamp Voltage

IZCD=300μA

—

VZCDL

Lower Clamp Voltage

IZCD=-2.5mA

—

-0.2

—

VZCDA

Positive-Going Edge

—

1.5

—

VZCDT

Negative-Going Edge

—

IOVP

OVP Current on ZCD pin

—

270

300

330

μA

TB_OVP

Blanking Time for OVP Detection

—

μs

Starter

TSTART

Start Timer Period

—

μs

TOFF

Minimum Off Time

—

μs

Over Temperature Protection

OTP

Over Temperature Trip Point

—

150

—

°C

Power MOSFET

RDS

Power MOSFET Switch ON Resistance @ VGS=10V, IDS=0.5A

—

BVDSS

Power MOSFET Drain-Source Voltage @ VGS=0V, IDS<250μA

500

—

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