LTC1751EMS8-5 datasheet(11/12 Pages) LINER

Part #	LTC1751EMS8-5

Description	Micropower, Regulated Charge Pump DC/DC Converters"\|\|" "94402

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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11

LTC1751/LTC1751-3.3/LTC1751-5

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

TYPICAL APPLICATIO S

1751 TA04

1

µF

LTC1751-5

C+

C–

VOUT

GND

VIN

SHDN

SS

2

6

5

1

4

3

7

8

PGOOD

VOUT = 5V

PGOOD

10

µF

10

µF

1nF

1

Ω

100k

1751 TA05

1

µF

LTC1751-5

C+

C–

VOUT

GND

VIN

SHDN

SS

2

6

5

1

4

3

7

8

PGOOD

10

µF

10

µF

10

µF

75k

VOUT = 5V

IOUT ≤ 100mA

HIGH = BACKUP MODE

100k

+

–

1

2

3

4

5

6

7

8

+

3-CELL

NiCd

BATTERY

330pF

1.43M

475k

IN4148

BAT54C

LTC1540

Si4435DY

VIN = 5V

10k

1M

HYST

1751 TA07

C+

C–

VOUT

GND

VIN

SHDN

SS

2

6

5

1

4

3

7

8

FB

10

µF

10

µF

1

µF

RX

ON

OFF

IL =

1.205V

RX

LOAD

VOUT ≤ 2 VIN

VIN

LTC1751

USB Port to Regulated 5V Power Supply with Soft-Start

Low Power Battery Backup with Auto Switchover and No Reverse Current

2-Cell NiCd or NiMH to 3.3V with Low Standby Current

Boosted Constant Current Source

1751 TA06

1

µF

LTC1751-3.3

C+

C–

VOUT

GND

VIN

SHDN

SS

2

6

5

1

4

3

7

8

PGOOD

3.3V

40mA

PGOOD

10

µF

10

µF

1nF

100k

ON

OFF

2-CELL

NiCd OR

NiMH

+

Similar Part No. - LTC1751EMS8-5

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC1751	220Kb / 12P	Micropower, Regulated Charge Pump DC/DC Converters
	LTC1751-3.3	1Mb / 16P	Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump
	LTC1751-3.3	220Kb / 12P	Micropower, Regulated Charge Pump DC/DC Converters
	LTC1751-3.3	220Kb / 12P	Micropower, Regulated Charge Pump DC/DC Converters
	LTC1751-5	1Mb / 16P	Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump

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