UCC36351

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 7

www.unisonic.com.tw

QW-R115-012.B



PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

-0.3 ~ +42

V

Output Voltage

V

Switch Node Voltage

V

Boost Voltage

V

All Other Pins

-0.3 ~ +6

V

Junction Temperature

150

°C

Storage Temperature

-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 RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Ambient Operating Temperature

-40 ~ +85

°C



THERMAL CHARACTERISTICS

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

40

°C/W

Junction to Case

15

°C/W

pad.



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX

UNIT

Input Voltage Range

8

36

V

Quiescent Current

1

1.5

mA

Feedback Voltage

0.98

1.00

1.02

V

Feedback Overvoltage Threshold

1.1X

Cable Compensation Current (Note)

4

μA

High-Side Switch On Resistance (Note)

75

mΩ

Low-Side Switch On Resistance (Note)

45

mΩ

High-Side Switch Leakage Current

10

μA

Upper Switch Current Limit

Minimum Duty Cycle

4.0

5.0

A

Oscillation Frequency

160

KHz

Short Circuit Oscillation Frequency

80

KHz

Short Circuit Retry time (Note)

1

mS

Maximum Duty Cycle

88

%

Minimum On Time (Note)

220

ns

Current Sense Voltage

90

100

110

mV

Input Voltage Rising

36

V

Input Voltage Falling

3

V

Input Under Voltage Lockout Threshold

UVLO

6.5

7.0

7.5

V

Input Under Voltage Lockout Threshold

Hysteresis

UVLO-Hys

800

mV

Soft-Start Period

2

ms

Thermal Shutdown

155

°C

Thermal Shutdown Hysterisis

30

°C

Note: Guaranteed by design.