LTC1174 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC1174

High Efficiency Step-Down and Inverting DC/DC Converter

Linear Technology 

LTC1174

LTC1174-3.3/LTC1174-5

TYPICAL APPLICATIO S

Low Noise 3V Regulator

INPUT VOLTAGE

4V TO 12.5V

7 IPGM

6

VIN

8

SHUTDOWN

3 LBIN

2

LTC1174

LBOUT

1

VFB

SW 5

GND

4

* AVX TPSD226K025

** AVX TPSD105K010

† COILTRONICS CTX50-4

+ 22µF*

25V

×3

0.1µF

50µH†

6.8nF

1N5818

+ 100µF** 42k

10V

×2

30k

1174 TA05

VOUT

3V

450mA

Positive-to-Negative (– 5V) Converter

* LOW-BATTERY INDICATOR

IS SET TO TRIP AT VIN = 4.4V

** AVX TPSD106K035

VIN(V) IOUT MAX(mA)

4

110

*** AVX TPSD105K010

6

140

D1 = MBRS130LT3 (SURFACE MOUNT) 8

170

1N5818

10

200

† L1 SELECTION

12.5

235

MANUFACTURER

COILTRONICS

COILCRAFT

SUMIDA

GOWANDA

PART NO.

CTX50-3

DT3316-473

CD54-470

GA10-472K

TYPE

SURFACE MOUNT

SURFACE MOUNT

SURFACE MOUNT

THROUGH HOLE

4.7K

*LOW-

BATTERY

INDICATOR

280k

43k

INPUT VOLTAGE

4V TO 12.5V

7 IPGM

6

VIN

8

SHUTDOWN

2

LBOUT

1

VOUT

3

LTC1174HV-5 5

LBIN

SW

GND

4

+

0.1µF

10µF**

35V

×2

L1†

D1 50µH

+

100µF***

10V

VOUT

1174 TA06 – 5V

1174fe

14

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