LTC1878 LINER [Linear Technology], LTC1878 Datasheet - Page 15

• Manufacturer Part Number: LTC1878
• Description: High Efficiency Monolithic Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO S
220pF
220pF
220pF
**
*
†
TOKO D62CB A920CY-100M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
V
***
OUT
**
1
2
3
4
*
SUMIDA CD54-150
TAIYO-YUDEN CERAMIC JMK325BJ226MM
SANYO POSCAP CTPA47M
**
RUN
I
V
GND
CONNECTED TO V
TH
*
1
2
3
4
FB
TOKO D62CB A920CY-100M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
1
2
3
4
RUN
I
V
GND
TH
LTC1878
FB
SYNC/MODE
RUN
I
V
GND
TH
FB
U
LTC1878
PLL LPF
SYNC/MODE
LTC1878
SYNC/MODE
PLL LPF
SW
V
3- to 4-Cell NiCd/NiMH to 3.3V/0.5A Regulator
IN
IN
Externally Synchronized 2.5V/0.6A Regulator
PLL LPF
V
SW
FOR 2.7V < V
8
7
6
5
IN
SW
V
IN
8
7
6
5
Low Noise 2.5V/0.3A Regulator
10 H*
8
7
6
5
Using All Ceramic Capacitors
Using All Ceramic Capacitors
15 H*
IN
EXT CLOCK
700kHz
0.01 F
10 H*
< 3.3V
10k
20pF
20pF
20pF
887k
412k
1878 TA06
887k
412k
887k
280k
1878 TA06
1878 TA04
+
C
47 F
6.3V
C
22 F
CER
OUT
C
22 F
CER
OUT
OUT
***
**
**
V
2.5V
0.3A
V
2.5V
0.6A
OUT
V
3.3V
0.5A
OUT
OUT
†
C
22 F
CER
C
22 F
CER
IN
IN
**
**
C
22 F
CER
IN
**
V
3V TO 6V
V
2.65V TO 6V
IN
IN
V
2.7V TO 6V
IN
LTC1878
15