LTC1627 Linear Technology, LTC1627 Datasheet - Page 16

• Manufacturer Part Number: LTC1627
• Description: Monolithic Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
LTC1627
RELATED PARTS
PART NUMBER
LTC1174/LTC1174-3.3
LTC1174-5
LTC1265
LT
LTC1435
LTC1436/LTC1436-PLL
LTC1438/LTC1439
LTC1474/LTC1475
LTC1626
16
®
1375/LT1376
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
DESCRIPTION
High Efficiency Step-Down and Inverting DC/DC Converters
1.2A, High Efficiency Step-Down DC/DC Converter
1.5A, 500kHz Step-Down Switching Regulators
High Efficiency, Synchronous Step-Down Converter
High Efficiency, Low Noise, Synchronous Step-Down Converters
Dual, Low Noise, Synchronous Step-Down Converters
Low Quiescent Current Step-Down DC/DC Converters
Low Voltage, High Efficiency Step-Down DC/DC Converter
*** AVX TAJA226M006R
** AVX TPSC107M006R0150
* AVX TPSC226M016R0375
0.1 F
47pF
C
C
ITH
SS
0.1 F
47pF
C
C
ITH
SS
U
Dual Output 1.8V/300mA and 3.3V/100mA Application
1
2
3
4
I
RUN/SS
V
GND
TH
Double Lithium-Ion to 2.5V/0.5A Regulator
1
2
3
4
FB
LTC1627
I
RUN/SS
V
GND
TH
FB
SYNC/FCB
LTC1627
SYNC/FCB
V
SW
V
DR
†††
IN
††
†
V
IS RECOMMENDED
V
SW
COILTRONICS CTX25-1
MMSZ4678T1
8
7
6
5
DR
A 10mA MIN LOAD CURRENT
IN
+
8
7
6
5
V
C
22 F
16V
IN
IN
25 H*
*
R3
249k
1%
R4
80.6k
1%
8.5V
***
**
* SUMIDA CD54-250
AVX TPSC107M006R0150
AVX TPSC226M016R0375
R1
80.6k
1%
R2
169k
1%
25 H
1:1
+
†
MBR0520LT1
C
100 F
6.3V
OUT **
***22 F
R1
80.6k
1%
R2
100k
1%
V
2.5V
0.5A
COMMENTS
Monolithic Switching Regulators, I
Burst Mode Operation
Constant Off-Time, Monolithic, Burst Mode Operation
High Frequency, Small Inductor, High Efficiency
16-Pin SO and SSOP
24-Pin Narrow SSOP
Multiple Output Capability
Monolithic, I
Monolithic, Constant Off-Time, I
Low Supply Voltage Range: 2.5V to 6V
D1
OUT
6.3V
+
+
+
1627 TA01
C
22 F
16V
IN ***
C
100 F
6.3V
V
OUT
OUT
IN
**
to 250mA, I
8.4V
D2
ZENER
1.8V
V
3.3V
100mA
††
V
1.8V
0.3A
SEC
OUT
1627 TA02
LINEAR TECHNOLOGY CORPORATION 1998
†††
1627f LT/TP 0199 4K • PRINTED IN USA
Q
= 10 A, 8-Pin MSOP
OUT
OUT
to 600mA,
to 450mA,