LTC1771 LINER [Linear Technology], LTC1771 Datasheet - Page 16

• Manufacturer Part Number: LTC1771
• Description: Low Quiescent Current High Efficiency Step-Down DC/DC Controller
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO
LTC1771
RELATED PARTS
PART NUMBER
LTC1147 Series
LTC1174/LTC1174-3.3/LTC1174-5
LTC1265
LTC1474/LTC1475
LTC1574/LTC1574-3.3/LTC1574-5
LTC1622
LTC1624
LT
LT1763 Series
LTC1772
16
®
1761 Series
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
220pF
10k
1%
1M
DESCRIPTION
High Efficiency Step-Down Switching Regulator Controllers
High Efficiency Step-Down and Inverting DC/DC Converters
1.2A High Efficiency Step-Down DC/DC Converter
Low Quiscent Current Step-Down Regulators
High Efficiency Step-Down DC/DC Converters
with Internal Schottky Diode
Low Input Voltage Step-Down DC/DC Controller
High Efficiency SO-8 N-Channel Switching Regulator Controller
100mA, Low Noise, LDO Micropower Regulators in SOT-23
500mA, Low Noise, LDO Micropower Regulators
Constant Frequency Step-Down DC/DC Controller
0.01 F
U
1
2
3
4
RUN/SS
I
V
GND
TH
FB
LTC1771
3.09M
5pF
1%
SENSE
PGATE
MODE
V
IN
5V/1A Zeta Converter
8
7
6
5
MODE
1000pF
22 H
•
Si3443DV
22 F
10V
0.025
R
SENSE
•
UPS5817
V
22 H
IN
2.8
3.3
7.5
10
12
5
(V)
I
LOAD(MAX)
+
+
0.8
1.1
1.7
2.3
2.7
2.9
1771 TA03
C
150 F
6.3V
C
22 F
25V
OUT
IN
COMMENTS
100% DC, 3.5V V
Selectable I
Burst Mode Operation, Internal MOSFET
Monolithic, I
LTC1174 with Internal Schottky Diode
Constant Frequency, 2V to 10V V
95% DC, 3.5V to 36V V
20 A Quiescent Current, 20 V
30 A Quiescent Current, 20 V
SOT-23, 2.2V to 9.8V V
(A)
V
2.8V
TO 12V
V
5V
1A
LINEAR TECHNOLOGY CORPORATION 2000
IN
OUT
1771i LT/TP 0200 4K • PRINTED IN USA
PEAK
Q
= 10 A, 400mA, MS8
= 300mA or 600mA
IN
IN
IN
16V
RMS
RMS
IN
, MS8
Noise
Noise