P1580

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R103-049.A

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

28

V

Switch Voltage

V

Boost Voltage

V

Feedback Voltage

-0.3~6

V

Enable/UVLO Voltage

-0.3~6

V

Compensation Voltage

-0.3~6

V

Synchronization Voltage

-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.

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

3.5~28

V

Ambient Operating Temperature

-40 ~ +125

°C

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

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

Feedback Voltage

1.198

1.222

1.246

V

Upper Switch Leakage

0.1

10

µA

Current Limit

3.1

3.3

3.3

A

Current Limit Gain.

Output Current to Comp Pin Voltage

2.2

A/V

Error Amplifier Voltage Gain

400

V/V

Error Amplifier Transconductance

680

770

1000

µA/V

Oscillator Frequency

342

380

418

Short Circuit Frequency

40

46

54

Synchronization Frequency

Sync Drive 0 ~ 2.7V

370

660

Maximum

90

%

Duty Cycle

Minimum

0

%

400

mV

Enable Threshold

0.9

1.1

1.3

V

Enable Pull Up Current

0.1

µA

Shutdown

5

8

µA

Supply Current

Quiescent

1.7

mA

Current of Short Circuit

1.8

A

Thermal Shutdown

160

°C