L4960 データシートの表示（PDF） - STMicroelectronics

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L4960

2.5A POWER SWITCHING REGULATOR

STMicroelectronics 

L4960

PIN CONNECTION (Top view)

ABSOLUTE MAXIMUM RATINGS

Symbol

V1

V1 - V7

V7

V3, V6

V2

I3

I5

Pto t

Tj, Tstg

Parameter

Input voltage

Input to output voltage difference

Negative output DC voltage

Negative output peak voltage at t = 0.1µs; f = 100KHz

Voltage at pin 3 and 6

Voltage at pin 2

Pin 3 sink current

Pin 5 source current

Power dissipation at Tcase ≤ 90°C

Junction and storage temperature

Value

Unit

50

V

50

V

-1

V

-5

V

5.5

V

7

V

1

mA

20

mA

15

W

-40 to 150

°C

PIN FUNCTIONS

N°

NAME

1

SUPPLY VOLTAGE

2

FEEDBACK INPUT

3

FREQUENCY

COMPENSATION

4

GROUND

5

OSCILLATOR

6

SOFT START

7

OUTPUT

FUNCTION

Unregulated voltage input. An internal regulator powers the

internal logic.

The feedback terminal of the regulation loop. The output is

connected directly to this terminal for 5.1V operation; it is

connected via a divider for higher voltages.

A series RC network connected between this terminal and

ground determines the regulation loop gain characteristics.

Common ground terminal.

A parallel RC network connected to this terminal determines the

switching frequency.

Soft start time constant. A capacitor is connected between this

terminal and ground to define the soft start time constant. This

capacitor also determines the average short circuit output

current.

Regulator output.

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