LT1931 datasheet(3/12 Pages) LINER | 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT

部件名	LT1931

功能描述	1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT

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制造商	LINER [Linear Technology]

网页	http://www.linear.com

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LT1931/LT1931A

1931fa

TYPICAL PERFOR A CE CHARACTERISTICS

Quiescent Current

TEMPERATURE (

°C)

–50

4.5

5.0

5.5

25

75

1931 G01

4.0

3.5

3.0

–25

0

50

6.0

6.5

7.0

100

NOT SWITCHING

LT1931A

LT1931

TEMPERATURE (

°C)

–50

–1.28

–1.27

–1.26

–1.25

–1.24

–1.22

–25

025

50

1931 G02

75

100

–1.23

SHDN PIN VOLTAGE (V)

0

–10

10

30

50

1

2

34

1931 G03

5

70

90

0

20

40

60

80

6

LT1931A

TA = 25°C

LT1931

Feedback Pin Voltage

Shutdown Pin Current

Current Limit

Switch Saturation Voltage

Oscillator Frequency

DUTY CYCLE (%)

10

0.8

1.2

90

1931 G04

0.4

0

30

50

70

20

40

60

80

1.6

0.6

1.0

0.2

1.4

TA = 25°C

SWITCH CURRENT (A)

0

0.05

0.15

0.20

0.25

0.8

0.45

1931 G05

0.10

0.4

0.2

1.0

0.6

1.2

0.30

0.35

0.40

TA = 25°C

TEMPERATURE (

°C)

–50

0.5

0.9

1.3

1.7

–25

0

25

50

1931 G06

75

2.1

2.5

0.7

1.1

1.5

1.9

2.3

100

LT1931A

LT1931

PI FU CTIO S

SW (Pin 1): Switch Pin. Connect inductor/diode here.

Minimize trace area at this pin to keep EMI down.

GND (Pin 2): Ground. Tie directly to local ground plane.

NFB (Pin 3): Feedback Pin. Reference voltage is –1.255V.

Connect resistive divider tap here. Minimize trace area.

The NFB bias current flows out of the pin. Set R1 and R2

according to:

For LT

R

V

R

OUT

1931 1

1 255

2

410 6

:

|| – .

.

•

–

=

+

()

For LT

A R

V

R

OUT

1931

1

1 255

2

810 6

:

|| – .

.

•

–

=

+

()

SHDN (Pin 4): Shutdown Pin. Tie to 2.4V or more to enable

device. Ground to shut down.

VIN (Pin 5): Input Supply Pin. Must be locally bypassed.

类似零件编号 - LT1931

制造商	部件名	数据表	功能描述
Linear Technology	LT1931	212Kb / 12P	1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
	LT1931	274Kb / 28P	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
	LT1931	477Kb / 36P	Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller
	LT1931	454Kb / 12P	1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
	LT1931	193Kb / 12P	Low Dropout Negative Micropower Regulator in ThinSOT

More results

类似说明 - LT1931

制造商	部件名	数据表	功能描述
Linear Technology	LT1931	212Kb / 12P	1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
	LT1931	454Kb / 12P	1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
	LT1931A	454Kb / 12P	1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
	LT1930A	202Kb / 12P	1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT
	LT1930	202Kb / 12P	1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters in ThinSOT
	LT3462	233Kb / 8P	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
	LT3462A	233Kb / 8P	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
	LT3462	225Kb / 8P	Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
	LT1930	190Kb / 12P	1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters
	LTC3527	2Mb / 20P	Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters

More results

LT1931 数据表(PDF) 3 Page - Linear Technology

LT1931 数据表(HTML) 3 Page - Linear Technology

类似零件编号 - LT1931

类似说明 - LT1931

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数据表下载

链接网址

LT1931 数据表(PDF) 3 Page - Linear Technology

LT1931 数据表(HTML) 3 Page - Linear Technology

类似零件编号 - LT1931

类似说明 - LT1931

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

数据表 下载

链接网址

数据表下载