UD052012

Advance

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 9

www.unisonic.com.tw

QW-R115-039.a



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

VIN to GND

-0.3 ~ +6.5

V

LX to GND

-0.3 ~ VIN +0.3

V

EN, FB, PG to GND

-0.3 ~ VIN

V

Maximum Junction Temperature

TJ

+150

°C

Storage Temperature

TSTG

-65 ~ +150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

VIN

+2.5 ~ +6

V

Junction Temperature Range

-40 ~ +125

°C

Operation Temperature Range

TOPR

-40 ~ +85

°C

Note: The device is not guaranteed to function outside its operating conditions.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

θJA

250

°C/W

Junction to Case

SOT-25

θJC

130

°C/W

SOT-26

110

°C/W



ELECTRICAL CHARACTERISTICS VIN=5V, TA=25°C, unless otherwise specified.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Supply Voltage

VIN

2.5

6.0

V

Input Over Voltage Protection

VIN OVP

6.5

V

Shutdown Current

ISHDN

EN=GND

0.1

1

μA

Quiescent Current

Iq

VFB=0.65V, IOUT=0A

40

μA

Reference Voltage

VREF

0.588

0.6

0.612

V

FB Input Leakage Current

IFB

VFB=VIN

0.01

1

µA

On-Resistance (Note)

RDS(ON)

P-Channel MOSFET

140

mΩ

N-Channel MOSFET

90

mΩ

P-Channel Current Limit (Note)

ILIM

2.2

2.7

A

EN High-Level Input Voltage

VEN(H)

1.5

V

EN Low-Level Input Voltage

VEN(L)

0.4

V

Under Voltage Lockout Voltage

UVLO

2.4

V

UVLO Hysteresis

VHYS

0.2

V

Oscillation Frequency

FOSC

IOUT=300mA

0.8

1.0

1.2

MHz

Minimum On Time

50

ns

Maximum Duty Cycle

100

%

PG Rising Threshold

VPG (H)

VFB Rising

90

%

PG Low Threshold

VPG (L)

VFB falling

85

%

PG Sink Current

IPG

VPG=0.1V

1

mA

Internal Soft-Start Time

TSS

1

ms

VOUT Discharge Resistance

100

Ω

Thermal Shutdown Temperature (Note)

150

°C

Note: Guarantee by design.