14

LTC1877

Figure 8. Single Lithium-Ion to 2.5V/0.3A Regulator from Design Example

Dual Lithium-Ion to 2.5V/0.6A Regulator

Using All Ceramic Capacitors

4-to 6-Cell NiCd/NiMH to 1.8V/0.6A Regulator

Using All Ceramic Capacitors

OUTPUT CURRENT (mA)

0.1

95

90

85

80

75

70

65

60

55

50

1.0

10

1877 • F08b

100

1000

L = 15

µH

2.5V

220pF

20pF

10

µF**

CER

15

µH*

887k

47

412k

LTC1877

RUN

GND

8

7

6

5

1

2

3

4

PLL LPF

SYNC/MODE

SW

2.7V

TO 4.2V

1877 F08a

+

2.5V/0.6A

220pF

15

µH*

887k

412k

22

µF

CER

LTC1877

RUN

GND

8

7

6

5

1

2

3

4

PLL LPF

SYNC/MODE

SW

≤ 8.4V

1877 TA03

20pF

10

CER

1.8V/0.6A

220pF

10

µH*

887k

698k

22

µF

CER

LTC1877

RUN

GND

8

7

6

5

1

2

3

4

PLL LPF

SYNC/MODE

SW

≤ 9V

1877 TA04

20pF

10

CER