LTC3404 LINER [Linear Technology], LTC3404 Datasheet - Page 14

• Manufacturer Part Number: LTC3404
• Description: 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

APPLICATIO S I FOR ATIO
LTC3404
TYPICAL APPLICATIO S
14
47pF
412k
47pF
47pF
1
2
3
4
U
RUN
I
V
GND
TH
FB
***
LTC3404
SYNC/MODE
**
887k
20pF
*
***
TOKO D52LC A914BYW-4R7M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
TAIYO-YUDEN CERAMIC LMK325BJ106MN
**
U
PLL LPF
*
Figure 8. Single Lithium-Ion to 2.5V/0.3A Regulator from Design Example
TOKO D52LC A914BYW-4R7M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
TAIYO-YUDEN CERAMIC LMK325BJ106MN
1
2
3
4
1
2
3
4
SW
V
IN
***
RUN
I
V
GND
TH
RUN
I
V
GND
**
FB
TH
FB
*
8
7
6
5
TOKO D63LCB A920CY-6R2M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
TAIYO-YUDEN CERAMIC LMK325BJ106MN
U
LTC3404
LTC3404
SYNC/MODE
W
6.2 H*
SYNC/MODE
10 F***
22 F**
CER
PLL LPF
CER
PLL LPF
3- to 4-Cell NiCd/NiMH to 1.8V/0.5A Regulator
SW
V
SW
V
IN
IN
Single Li-Ion to 2.5V/0.6A Regulator
8
7
6
5
8
7
6
5
Using All Ceramic Capacitors
Using All Ceramic Capacitors
U
3404 F08a
4.7 H*
V
2.65V
TO 4.2V
4.7 H*
V
2.5V
IN
OUT
20pF
20pF
887k
412k
887k
698k
3404 TA03
3404 TA04
C
22 F
CER
C
22 F
CER
OUT
OUT
95
90
85
80
75
70
**
0.1
**
V
V
2.5V
0.6A
IN
OUT
V
1.8V
0.5A
= 4.2V
OUT
1.0
OUTPUT CURRENT (mA)
V
IN
C
10 F
CER
C
10 F
CER
IN
IN
= 3.6V
***
10
***
V
3V TO 4.2V
V
2.7V TO 6V
IN
IN
100
V
L = 6.2 H
OUT
V
IN
= 2.5V
= 3V
3404 F8b
1000