LTC1430A Linear Technology, LTC1430A Datasheet - Page 6

• Manufacturer Part Number: LTC1430A
• Description: High Power Step-Down Switching Regulator Controller
• Manufacturer: Linear Technology

BLOCK
LTC1430A
TEST CIRCUITS
6
FREQSET
COMP
SHDN
I
MAX
4.7 F
SS
+
DIAGRAM
V
CC
C1
220pF
100
12 A
12 A
SHUTDOWN
0.1 F
+
R
7.5k
C
NC
C
4700pF
W
0.01 F
C
1 F
I
LIM
PV
V
SS
FREQSET
SHDN
COMP
PV
CC2
CC
DELAY
+
50 s
CC2
LTC1430A
SENSE
= 5V
PV
SENSE
CC1
PV
PGND
–
I
GND
CC1
MAX
= 12V
G1
I
G2
FB
FB
+
+
+
+
1.265V
1 F
FB
NC
INTERNAL
SHUTDOWN
Q1A, Q1B, Q2: MOTOROLA MTD20N03HL
C
C
IN
OUT
PWM
: AVX-TPSE227M010R0100
: AVX-TPSE337M006R0100
Figure 1
Q2
2.7 H/15A
Q1A, Q1B
2 IN PARALLEL
+
+
C
220 F
MIN
40mV
IN
4
+
C
330 F
OUT
6
3.3V
+
MAX
40mV
LTC1430A
SENSE
FB MEASUREMENT
NC
SENSE
–
FB
+
12.4k
20k
NC
1430 F01
V
OUT
1430 BD
1.61k
1k
PV
G1
PV
G2
PGND
I
FB
SENSE
SENSE
FB
CC1
CC2
+
–