LM2575 查看數據表（PDF） - First Components International

零件编号

产品描述 (功能)

生产厂家

LM2575

1.0A Step - Down Voltage Switching Regulators

First Components International 

LM2575 1.0A Step - Down Voltage Switching Regulators

ABSOLUTE MAXIMUM RATINGS

PARAMETER

Maximum Supply Voltage

ON/OFF Pin Input Voltage

Output Voltage to Ground (Steady State)

Power Dissipation

Storage Temperature Range

Maximum Junction Temperature

Lead Temperature (Soldering, 10 sec.)

VALUE

45

-0.3 V VIN

-1.0

Internally Limited

-65 to + 150

+150

+260

UNIT

V

V

V

-

°C

°C

°C

RECOMMENDED OPERATING CONDITIONS

PARAMETER

Temperature Range

Supply Voltage

VALUE

-40 TJ 125

40

BLOCK DIAGRAM

UNIT

°C

V

Unregulated

DC Input

VIN

1

Internal

Regulator

+

CIN

4

Feed-

back

R2

1.0K

R1

Fixed Gain

Error AMP

+

-

Comparator

+

-

ON/OFF

1 AMP

Switch

Driver

1.23V

Band-Gap

Reference

52kHz

Oscillator

Reset

Thermal

Shutdown

Current

Limit

ON/OFF

5

Output

L1

2

D1

3

GND

VOUT

+

L

Cout

O

A

D

VOUT

3.3V, R2 = 1.7K

5V, R2 = 3.1K

12V, R2 = 8.84K

15V, R2 = 11.3K

For ADJ. Version

R1 = Open, R2 = 0W

Share Link: