LTC1430 LINER [Linear Technology], LTC1430 Datasheet - Page 5

• Manufacturer Part Number: LTC1430
• Description: High Power Step-Down Switching Regulator Controller
• Manufacturer: LINER [Linear Technology]

BLOCK DIAGRA
TEST CIRCUITS
FREQSET
COMP
SHDN
I
MAX
SS
NC
NC
NC
NC
4.7 F
+
V
I
FREQSET
COMP
SS
SHDN
MAX
SHDN
V
GND
CC
12 A
12 A
C1
220pF
V
V
100
CC
CC
PGND
SHUTDOWN
Figure 2
0.1 F
LTC1430
W
PV
+
CC2
R
7.5k
SENSE
C
NC
C
4700pF
0.01 F
C
PV
PV
1 F
I
LIM
CC1
CC
–
SENSE
DELAY
+
50 s
V
SS
FREQSET
SHDN
COMP
PV
I
CC
FB
G1
G2
FB
CC2
PV
+
LTC1430
LTC1430 • TC02
SENSE
CC
= 5V
SENSE
PV
PGND
–
I
GND
CC1
NC
NC
NC
MAX
+
G1
I
G2
FB
+
FB
1N4148
+
1.26V
FB
NC
INTERNAL
SHUTDOWN
PWM
M1A, M1B, M2: MOTOROLA MTD20N03HL
C
C
IN
OUT
: AVX-TPSE227M010R0100
: AVX-TPSE337M006R0100
Figure 1
0.1 F
+
MIN
40mV
M2
2.7 H/15A
M1A, M1B
2 IN PARALLEL
+
C
220 F
IN
4
+
C
330 F
OUT
6
+
GND
V
MAX
40mV
CC
LTC1430
PV
5V
CC1
3.3V
PV
PGND
CC2
G1
G2
Figure 3
LTC1430
SENSE
FB MEASUREMENT
NC
SENSE
–
10 F
20.1k
12.4k
10,000pF
10,000pF
FB
+
LTC1430 • BD
NC
LTC1430 • F01
V
G1 RISE/FALL
G2 RISE/FALL
PV
G1
PV
G2
PGND
I
FB
SENSE
SENSE
OUT
0.1 F
FB
1.61k
1k
CC1
CC2
LTC1430
LTC1430 • TC03
+
–
5