LP6284 datasheet(6/9 Pages) POWER

6 / 9 page

Preliminary Datasheet

LP6284

Email: marketing@lowpowersemi.com www.lowpowersemi.com

Page 6 of 9

LP6284–00

Version 0.0 AUG.-2016

Electrical Characteristics

(VIN =3.3V, VAVDD =10V, TA=25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

General

VIN Input Supply Voltage

VIN

2.5

5.5

VIN Supply Current

VFB=1.3V, LX no Switching

0.5

VFB=1.1V, LX Switching

Shutdown Current

ISD

Input UVLO Threshold

VUVLO(VTH)

VIN Rising

1.8

2.2

UVLO Threshold Hysteresis

VUVLO(HYS)

Falling Hysteresis

100

Frequency Selection Levels

FOSC

FSEL=Low

1.5

FSEL=High

0.6

FSEL Pull Down Current

IFSEL

VFSEL=1V

Thermal Shutdown Threshold

TSD

160

°C

Thermal Shutdown Hysteresis

°C

Boost Regulator

Switching Frequency

FSW

FSEL = GND

640

kHz

FSEL = VIN

1000

1200

1500

Maximum Duty-Cycle

DMAX

Feedback Voltage

VFB

1.228

1.24

1.252

Line Regulation

VIN=2.5V to 5.5V

-0.1

%/V

Switch-ON Resistance

RDS(ON)

200

500

Ω

Current Limit

ILimit

Soft Start Current

ISS

FB Fault Protection Voltage

VUVP

VFB Falling

1.05

FB Fault Delay

TUVP

160

Voltage Detector

Minimum Operating Voltage

VDV

1.6

Detecting Voltage Adjustment

VDet

1.08

1.1

1.12

��PullLowResistance

RRST

VRST=0.2V, IRST=1.2mA

1.7

Ω

DLY Source Current

IDLY

VDLY=1V

DLY Threshold Voltage

VDLY

1.2

1.24

1.28

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