17

LTC1148

LTC1148-3.3/LTC1148-5

TYPICAL APPLICATIO S

1

2

3

4

5

6

7

14

13

12

11

10

9

8

P-DRIVE

NC

N-DRIVE

NC

PGND

SGND

SHUTDOWN

NC

LTC1148L-3.3

1

µF

1000pF

0.05

Ω

SHUTDOWN

*L

25

µH

MMSF5N02HD

D1

MBRS140T3

MMSF3P02HD

+

100

µF

20V

3.5V TO 14V

220

µF

10V

×2

AVX

3.3V/2A

3300pF

1k

270pF

*COILTRONICS CTX25-5 Kool M

µ CORE

**IRC LR2512-01-R050-G

LTC1148 • F13

Figure 13. 5V Input Voltage, 3.3V/2A Low Dropout, High Efficiency Regulator

1

2

3

4

5

6

7

14

13

12

11

10

9

8

P-DRIVE

NC

N-DRIVE

NC

PGND

SGND

SHUTDOWN

LTC1148

1

µF

1000pF

0.05

Ω

1M

*L

50

µH

Si4412DY

D1

MBRS140T3

+

4V TO 9V

220

µF

10V

×2

OS-CON

–5V/1.4A

6800pF

1k

560pF

LTC1148 • F14

10nF

Si4431DY

220

µF

20V

R1

25k

1%

R2

75k

1%

200pF

TP0610L

0V: SHUTDOWN

*COILTRONICS CTX50-2-MP

**KRL SL-1-C1-0R050J

Figure 14. 4V to 9V Input Voltage to – 5V/1A Regulator