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