LM2576-12.TR 데이터 시트보기 (PDF) - Semtech Corporation

부품명

상세내역

제조사

LM2576-12.TR

1A & 3A Miniconverter Switching Regulators

Semtech Corporation 

LM2575 & LM2576

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified: VIN = 12V for 3.3V, 5V and ADJ options and 25V for 12V option; VOUT = 5V for ADJ option; TA = 25ºC; VIN rated = 40V;

IO = 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range.

Parameter

Symbol

Test Conditions

Min Typ Max Units

Output Voltage

VO

LM2575-3.3

IO = 0.2A

8V to VIN Rated

3.23 3.30 3.37 V

3.20

3.40

3.14

3.47

Output Voltage

VO

LM2575-5

IO = 0.2A

8V to VIN Rated

4.90 5.00 5.10 V

4.85

5.15

4.75

5.25

Output Voltage

VO

LM2575-12

IO = 0.2A

15V to VIN Rated

11.76 12.00 12.24 V

11.52

12.48

11.40

12.60

Feedback Voltage

VFB

LM2575-ADJ, VO = 5V

IO = 0.2A

8V to VIN Rated

1.217 1.230 1.243 V

1.193

1.267

1.180

1.280

Feedback Bias Current

IB

LM2575-ADJ

VIN = 12V, IO = 0.2A

50 100 nA

500

Efficiency/Option

3.3V

5V

h

VIN = 12V, IO = 1A (LM2575, 3A for LM2576)

77

%

82

12V

ADJ, VO = 5V

Switching Frequency

VIN = 15V, IO = 1A (LM2575, 3A for LM2576)

88

VIN = 12V, IO = 1A (LM2575, 3A for LM2576)

82

fSX

47

52

58 kHz

43

62

Saturation Voltage(1)

VSAT

Max. Duty Cycle (On)(3)

DC

LM2575, IO = 1A

LM2576, IO = 3A

0.9 1.2 V

0.9 1.4

93 98

%

Peak Current LM2575(1)

ICL

1.7 2.2 3.0 A

1.3

3.2

Peak Current LM2576(1)

ICL

4.2 5.8 6.9 A

3.5

7.5

ã 2001 Semtech Corp.

3

www.semtech.com

Share Link: