LTC1174 查看數據表（PDF） - Linear Technology

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LTC1174

High Efficiency Step-Down and Inverting DC/DC Converter

Linear Technology 

LTC1174

LTC1174-3.3/LTC1174-5

TYPICAL APPLICATIO S

Positive-to-Negative (– 3.3V) Converter

* LOW-BATTERY INDICATOR

IS SET TO TRIP AT VIN = 4.4V

** AVX TPSD336K020

VIN(V) IOUT MAX(mA)

*** AVX TPSD105K010

4

175

D1 = MBRS140T3 (SURFACE MOUNT) 5

205

1N5818

6

230

† L1 SELECTION

7

255

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

220k

43k

INPUT VOLTAGE

4V TO 13.5V

7 IPGM

6

VIN

8

SHUTDOWN

2 LBOUT

VOUT 1

3

LTC1174HV-3.3

LBIN

SW

5

GND

4

+

0.1µF

33µF**

20V

×2

L1† + 100µF***

D1 50µH

10V

×2

VOUT

–3.3V

1174 TA07 210mA

Negative Boost Converter

* AVX TPSD336K020

D1 = MBRS140T3 (SURFACE MOUNT)

1N5818

† L1 SELECTION

MANUFACTURER

COILTRONICS

COILCRAFT

SUMIDA

GOWANDA

PART NO.

CTX50-3

DT3316-473

CD54-470

GA10-472K

TYPE

SURFACE MOUNT

SURFACE MOUNT

SURFACE MOUNT

THROUGH HOLE +

33µF*

16V

×2

7 IPGM

6

VIN

8

SHUTDOWN

2 LBOUT

VOUT 1

3

LTC1174-3.3

LBIN

SW

5

GND

4

310k

D1

L1†

50µH

50k

INPUT VOLTAGE

–5V

0.1µF

+

0.1µF

33µF*

20V

×2

VOUT

–9V

1174 TA08 175mA

1174fe

15

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