LTC1539 LINER [Linear Technology], LTC1539 Datasheet - Page 25

• Manufacturer Part Number: LTC1539
• Description: Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

APPLICATIONS
NOT ALL PINS CONNECTED FOR CLARITY
BOLD LINES INDICATE HIGH CURRENT PATHS
OUTPUT DIVIDER
REQUIRED WITH
R
R
R
10k
10k
10k
V
LP
C1
C2
PROG
56pF
220pF
0.1 F
220pF
470pF
OPEN
C
C
C
C1B
C2B
SS
1000pF
1000pF
1000pF
0.01 F
U
C
C
C
C
C1A
OSC
C2A
LP
10
INFORMATION
U
1000pF
V
10
100pF
IN
1000pF
22pF
INT V
INTV
0.1 F
C
100k
SS
W
CC
CC
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 13. LTC1539 Physical Layout Diagram
RUN/SS1
SENSE
SENSE
V
I
POR2
C
SGND
LBI
LBO
SFB1
I
V
V
SENSE
SENSE
RUN/SS2
AUXDR
TH1
TH2
PROG1
OSC
PROG2
OSENSE2
LTC1539
+
+
–
–
1
1
2
2
U
BOOST 1
BOOST 2
PLL LPF
EXTV
INTV
AUXON
AUXFB
PLLIN
PGND
TGS1
TGS2
TGL1
TGL2
SW1
SW2
BG1
BG2
V
CC
CC
IN
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
CLOCK
EXT
0.1 F
+
0.1 F
C
C
B1
D
B2
D
B2
B1
4.7 F
M3
M6
LTC1538-AUX/LTC1539
M1
M2
M5
M4
L1
L2
D1
D2
C
C
IN1
IN2
R
SENSE1
GROUND PLANE
+
+
R
C
C
SENSE2
OUT1
OUT2
V
V
OUT1
OUT2
+
–
–
+
1538 F13
25
V
+
–
IN