P2576 datasheet(4/8 Pages) UTC

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P2576

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 8

www.unisonic.com.tw

QW-R101-025.K



ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

UNITS

Supply Voltage

VCC

Maximum Supply Voltage

VCC(MAX)

OFF

Pin Input Voltage

VON/OFF

-0.3 ~ VIN

Output Voltage to Ground (Steady State)

VOUT

-1.0

Power Dissipation

Internally Limited

Junction Temperature

+150

°C

Operating Temperature

TOPR

-40 ~ +125

°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.



ELECTRICAL CHARACTERISTICS

(TJ=25°C, When VOUT = 5V & ADJ, VIN = 12V；VOUT = 12V, VIN = 15V, ILOAD=500mA, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

5.0V

8V≤VIN≤40V, 0.5A≤ILOAD≤3A

4.8

5.0

5.2

Feedback Voltage

12V

VOUT

15V≤VIN≤40V, 0.5A≤ILOAD≤3A

11.52 12.0 12.48

5.0V

VIN=12V, ILOAD=3A

Efficiency

12V

VIN=15V, ILOAD=3A

P2576 - ADJ

VIN=12V, ILOAD=0.5A, VOUT =5V

1.217 1.23 1.243

Feedback Voltage

VFB

8V≤VIN≤40V, 0.5A≤ILOAD≤3.0A, VOUT =5V

1.193 1.23 1.267

Efficiency

VIN = 12 V, ILOAD =3.0 A, VOUT =5V

ALL OUTPUT VOLTAGE

Oscillator Frequency

fOSC

(Note 4)

kHz

Saturation Voltage

VSAT

IOUT=3A (Note 1)

1.4

1.8

Max Duty Cycle (ON)

(Note 2)

Current Limit

ILIMIT

(Note 1, 4)

4.2

5.8

6.9

VIN=40V, Output=-1V (Notes 3)

Output Leakage Current

II(LEAK)

Output=-1V

7.5

Quiescent Current

(Note 3)

Standby Quiescent Current

ISTBY

OFF

Pin=5V (OFF)

200

μA

VIH

VOUT=0V

2.2

ON/OFF Pin Logic Input Level

VIL

VOUT=Nominal Output Voltage

1.0

IIΗ

OFF

Pin=5V (OFF)

μA

ON/OFF Pin Input Current

IIL

OFF

Pin=5V (ON)

μA

Notes: 1. Output pin sourcing current. No diode, inductor or capacitor connected to output.

2. Feedback pin removed from output and connected to 0V.

3. Feedback pin removed from output and connected to +12V, to force the output transistor OFF.

4. The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an overload

which causes the regulated output voltage to drop approximately 40% from the nominal output voltage.

This self- protection feature lowers the Average power dissipation of P2576 by lowering the minimum duty

cycle from 5% down to approximately 2%.

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