Datasheet

LTC1877
18
1877fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2000
LT 1111 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
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OUT
to 450mA,
Burst Mode Operation
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OUT
to 250mA, I
Q
= 10μA, 8-Pin MSOP
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OUT
to 500mA, V
IN
: 4V to 10V
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LTC1626 Low Voltage, High Effi ciency Step-Down DC/DC Converter Monolithic, Constant Off-Time, I
OUT
to 600mA, Low Supply
Voltage Range: 2.5V to 6V
LTC1627 Monolithic Synchronous Step-Down Switching Regulator Constant Frequency, I
OUT
to 500mA, Secondary Winding
Regulation, V
IN
: 2.65V to 8.5V
LTC1701 Monolithic Current Mode Step-Down Switching Regulator Constant Off-Time, I
OUT
to 500mA, 1MHz Operation,
V
IN
: 2.5V to 5.5V
LTC1707 Monolithic Synchronous Step-Down Switching Regulator 1.19V V
REF
Pin, Constant Frequency, I
OUT
to 600mA,
V
IN
: 2.65V to 8.5V
LTC1735 High Effi ciency, Synchronous Step-Down Converter 16-Pin SO and SSOP, V
IN
Up to 36V, Fault Protection
LTC1772 Low Input Voltage Current Mode Step-Down DC/DC Controller 550kHz, 6-Pin SOT-23, I
OUT
Up to 5A, V
IN
: 2.2V to 10V
LTC1878 High Effi ciency Monolithic Step-Down Regulator 550kHz, MS8, V
IN
Up to 6V, I
Q
= 10μA, I
OUT
to 600mA
V
OUT
3.3V/0.25A
220pF
10μH*
887k
280k
1
2
3
4
1877 TA07
*TOKO D62CB A920CY-100M
**TAIYO YUDEN CERAMIC LMK325BJ106MN
***SANYO POSCAP 6TPA47M
20pF
10μF**
LTC1877
RUN
I
TH
V
FB
GND
8
7
6
5
PLL LPF
SYNC/MODE
V
IN
SW
47μF***
V
IN
Li-Ion BATTERY
3V TO 4.2V
+
–
Single Lithium-Ion to 3.3V/0.3A Regulator