LTC1879 LINER [Linear Technology], LTC1879 Datasheet - Page 18

• Manufacturer Part Number: LTC1879
• Description: 1.2A Synchronous Step-Down Regulator with 15mA Quiescent Current
• Manufacturer: LINER [Linear Technology]

LTC1879
18
TYPICAL APPLICATIO
BOLD LINES INDICATE HIGH CURRENT PATHS
C
220pF
C
0.1 F
SVIN
C2
C
C
L1: TOKO A916CY-8R2M
V
IN1
OUT
OUT
, C
0.1 F
: TDK CERAMIC C4532X5R0J476M
: 1A IS THE MAXIMUM OUTPUT CURRENT
C
IN2
R
100k
SS
R
PG
1M
SS
: TAIYO YUDEN CERAMIC LMK325BJ106MN
R
150k
Dual Li-Ion to 1.8V/1A Regulator Using All Ceramic Capacitors
C
C
47pF
C1
U
14
16
2
4
PGOOD
RUN/SS
PLL_LPF
I
TH
100
90
80
70
60
50
40
SV
0.1
IN
13
LTC1879
Efficiency vs Output Current
SYNC/MODE
V
V
IN
IN
= 3.6V
= 7.2V
1
OUTPUT CURRENT (mA)
PGND
PGND
SGND
15
SWP
SWP
SWN
SWN
PV
PV
V
V
IN
FB
IN
IN
R
= 5V
10
SVIN
8
9
7
10
5
12
6
11
3
1
V
Burst Mode OPERATION
10
OUT
= 1.8V
R2
412k
10 F
C
8.2 H
100
IN1
L1
523k
R1
1879 TA04
1000
C
47 F
OUT
C
10 F
IN2
1879 TA02
V
3V TO 8.4V
GND
V
1.8V
1A
IN
OUT
1879f