LT1940 Linear Technology, LT1940 Datasheet - Page 17

• Manufacturer Part Number: LT1940
• Description: Dual Monolithic 1.4A/ 1.1MHz Step-Down Switching Regulator
• Manufacturer: Linear Technology

TYPICAL APPLICATIO S
GOOD
100 F
OUT1
3.3V
1.2A
3V3
6.3V
C1
+
C1: AVX TPSC107M010R0150
C2: AVX TPSC476M010R0350
C3: TAIYO YUDEN TMK325BJ475ML
100k
7V TO 25V
16.5k
10.0k
3.3 H
D3
L1
V
IN
220pF
U
10.0k
C3
4.7 F
5V/3.3V with Tantalum Output Capacitors
0.1 F
D1
D1, D2: MICROSEMI UPS140 OR ON SEMI MBRM140
D3, D4: CENTRAL CMDSH-3
L1: SUMIDA CDRH4D28-3R3
L2: SUMIDA CDRH4D28-4R7
1nF
BOOST1
SW1
FB1
V
PG1
RUN/SS1
C1
LT1940
GND
V
IN
RUN/SS2
BOOST2
SW2
PG2
FB2
V
C2
1nF
0.1 F
20k
100pF
D2
10.0k
30.1k
4.7 H
100k
D4
L2
1940 TA03
+
C2
47 F
10V
5 GOOD
OUT2
5V
1.2A
LT1940
17
1940i