P2680

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 5

www.unisonic.com.tw

QW-R502-A32.b



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

VIN Supply Voltage

26

V

SW Voltage

V

BST Voltage

V

EN Voltage

-0.3~6

V

FB Voltage

-0.3~6

V

COMP Voltage

-0.3~6

V

Maximum Power Dissipation

0.76

W

Junction Temperature

-40~150

°C

Storage Temperature

-55~150

°C

Notes: 1. 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.

2. Exceeding these ratings may damage the device.



RECOMMENDED OPERATING CONDITIONS (Note)

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

4~26

V

Ambient Operating Temperature

-40 ~ +125

°C

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



PACKAGE THERMAL CHARACTERISTICS (Note)

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

105

°C/W

Junction to Case

50

°C/W

Note: Measured on approximately 1” square of 1 oz. Copper surrounding device leads.



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage

7

26

V

Feedback Voltage

0.900 0.923 0.946

V

Switch On Resistance (High-Side)

0.20

Ω

Switch On Resistance (Low-Side)

0.20

Ω

SW Leakage

0

8

µA

Current Limit

2.4

A

Current Limit Gain.

Output Current to Comp Pin Voltage

3.3

A/V

Error Amplifier Transconductance

600

µA/V

Error Amplifier Gain

8000

V/V

Oscillator Frequency

305

340

375

kHz

Short Circuit Frequency

100

kHz

Maximum Duty Cycle

90

%

Minimum Duty Cycle

0

%

Enable Threshold Voltage

Hysteresis = 0.2V

1

V

Enable Pull-Up Current

4.8

µA

Supply Current in Shutdown

110

µA

IC Supply Current in Operation

0.9

mA

Soft-Start Current

6

µA

Soft-Start Period

15

ms

Thermal Shutdown Temperature

T

Hysteresis = 10°C

160

°C