UD36241

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 7

www.unisonic.com.tw

QW-R115-022 a



ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwisespecified)

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

VIN

40

V

SW Voltage

VSW

VIN+0.3

V

VBOOT to VSW

VBOOT

6.0

V

EN,FB,CSP,CSN

ICC

6.0

V

Storage Temperature Range

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.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

θJA

90

°С/W

Junction to Case

θJC

45

°С/W



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

VIN

9 ~ 36

V

Operating Ambient Temperature Range

TA

-40 ~ +85

°C

Operating Junction Temperature Range

TJ

-40 ~ +125

°C

Note: Range over which the device is functional and parameter limits are guaranteed.



ELECTRICAL CHARACTERISTICS (VIN=12V, VOUT=5V, TEMPER= 25°C, unless otherwisespecified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

Shutdown Supply Current

ISD

VEN=0V

1.5

3

μA

Supply Current

IQ

VEN=3V

4

mA

Feedback Voltage

VFB

9V≦VIN≦36V

1

V

High-Side Switch On-Resistance

RDS(ON)_U

200

mΩ

High-Side Switch Leakage Current

ISWLEAK

VEN=0V,VSW=0V

0

10

μA

Upper Switch Current Limit

ILIM

3.6

A

Load Line Compensation Gain

GLC

VCSP-VCSN=90mV, check IFB

15

20

25

μA/V

Current Sense Voltage

VSENSE

VCSP-VCSN

90

mV

Oscillation Frequency

Fosc1

85

100

115

KHZ

VIH

2.7

V

EN Input Threshold Voltage

VIL

0.3

V

Input Under Voltage Lockout Threshold

VUVLO

VIN Rising

8.2

V

Input Under Voltage Lockout Hysteresis

∆VUVLO

0.3

1

V

Soft-Start Period

tSS

1.2

ms

Notes: 1. Stresses beyond those listed ”Absolute Maximum Rating” may cause permanent damage to the device.

These are stress ratings only, and functional operation of the device at these or any other conditions

beyond those indicated in the operational sections of the specifications is not implied .Exposure to

absolute maximum rating conditions may affect device reliability.

2. Devices are ESD sensitive. Handing precaution recommended.

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