LTC1771IS8 Linear Technology, LTC1771IS8 Datasheet - Page 14

• Manufacturer Part Number: LTC1771IS8
• Description: IC CTRLR DC/DC STEPDOWN HE 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1771IS8

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 18 V
• Current - Output: 5A
• Voltage - Input: 2.8 ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Frequency - Switching: -

LTC1771
TYPICAL APPLICATIO S
14
3.01M
280k
402k
1%
1%
1%
V
IN
C
C
D1: MICROSEMI UPS5817
L1: SUMIDA CR75-150
IN
OUT
330pF
: TAIYO YUDEN LMK550BJ476MM
Q1
: SANYO POSCAP 4TPB220M
C
C
L1: SUMIDA CDRH6D38-220
U1: INTERNATIONAL RECTIFIER
IN
OUT
10k
1M
1%
220pF
: AVX TPSC336M016R0300
0.01 F
C
C
C1: AVX TPSD336M020R0200
D1: MOTOROLA MBRS140T3
L1A, L1B: COILTRONICS VP4-0075, B H ELECTRONICS Q10549
Q1: MOTOROLA MMBT2N2222LT1
FETKY
IN
OUT
: SANYO POSCAP 6TPB150M
220pF
: AVX TPSD226M025R0200
U
: AVX TPSV107M020R0085
10k
1M
1%
1
2
3
4
TM
1M
1%
0.01 F
10k
IRF7422D2
RUN/SS
I
V
GND
0.01 F
TH
FB
2.5V/1A Regulator with Foldback Current Limit
1
2
3
4
LTC1771
Low Dropout Single Cell Lithium-Ion to 3V
1.43M
15pF
1%
RUN/SS
I
V
GND
TH
FB
1
2
3
4
SENSE
PGATE
MODE
RUN/SS
I
V
GND
LTC1771
TH
FB
1.02M
V
5pF
1%
IN
LTC1771
8.66M
12V/1A Zeta Converter
SENSE
PGATE
5pF
1%
MODE
8
7
6
5
V
MODE
IN
SENSE
PGATE
MODE
V
8
7
6
5
IN
1000pF
MODE
8
7
6
5
MODE
1000pF
Si3443DV
D1
1000pF
4
5
47 H
L1A
3
6
R
•
0.1
SENSE
Si6459DQ
R
0.05
15 H
SENSE
L1
33 F
20V
C1
2
7
2
+
R
0.025
1
8
U1
+
+
SENSE
C
33 F
16V
D1
IN
•
C
47 F
10V
C
220 F
4V
22 H
IN
OUT
L1
47 H
L1B
V
IN
4.5
10
15
18
5
1771 TA02
(V)
+
I
Li-Ion
3.4V TO 4.2V
V
3V
2A
+
+
TH
OUT
I
LOAD(MAX)
1N4148
1771 TA06
C
150 F
6.3V
1771 TA05
2
OUT
C
100 F
20V
C
22 F
25V
0.7
0.9
1.8
2.4
2.6
OUT
IN
2
(A)
V
2.5V
1A
V
2.8V
TO 12V
V
5V
TO 18V
V
12V
1A
OUT
IN
IN
OUT