L4972 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

L4972

2A SWITCHING REGULATOR

STMicroelectronics 

L4972A-L4972AD

ABSOLUTE MAXIMUM RATINGS

Symbo l

V11

V11

V20

I20

VI

V4, V8

V3

I3

V2, V7, V9, V10

I2

I7

I8

Ptot

TJ, Tstg

P ar am et e r

Input Voltage

Input Operating Voltage

Output DC Voltage

Output Peak Voltage at t = 0.1µs f = 200khz

Maximum Output Current

Boostrap Voltage

Boostrap Operating Voltage

Input Voltage at Pins 4, 12

Reset Output Voltage

Reset Output Sink Current

Input Voltage at Pin 2, 7, 9, 10

Reset Delay Sink Current

Error Amplifier Output Sink Current

Soft Start Sink Current

Total Power Dissipation at TPINS ≤ 90°C

at T amb = 70°C (No copper area on PCB)

Junction and Storage Temperature

(*) SO-20

V alu e

55

50

-1

-5

Internally Limited

65

V11 + 15

12

50

50

7

30

1

30

5 / 3.75(*)

1.3/1 (*)

-40 to 150

Unit

V

V

V

V

V

V

V

V

mA

V

mA

A

mA

W

W

°C

PIN CONNECTION (top view)

THERMAL DATA

S ymb ol

Rth j-pins

Rth j-amb

Parameter

Thermal Resistance Junction-Pins

Thermal Resistance Junction-ambient

2/23

Po werdi p

max

12°C/W

max

60°C/W

SO- 20

16°C/W

80°C/W

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