16
LTC1878
1878f LT/TP 1000 4K • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC1174/LTC1174-3.3 High Efficiency Step-Down and Inverting DC/DC Converters Monolithic Switching Regulators, I
OUT
to 450mA,
LTC1174-5 Burst Mode Operation
LTC1265 1.2A, High Efficiency Step-Down DC/DC Converter Constant Off-Time, Monolithic, Burst Mode Operation
LTC1474/LTC1475 Low Quiescent Current Step-Down DC/DC Converters Monolithic, I
OUT
to 250mA, I
Q
= 10µA, 8-Pin MSOP
LTC1504A Monolithic Synchronous Step-Down Switching Regulator Low Cost, Voltage Mode I
OUT
to 500mA, V
IN
from 4V to 10V
LTC1622 Low Input Voltage Current Mode Step-Down DC/DC Controller High Frequency, High Efficiency, 8-Pin MSOP
LTC1626 Low Voltage, High Efficiency 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
from 2.65V to 8.5V
LTC1701 Monolithic Current Mode Step-Down Switching Regulator Constant Off-Time, I
OUT
to 500mA, 1MHz Operation,
V
IN
from 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
from 2.65V to 8.5V
LTC1772 Low Input Voltage Current Mode Step-Down DC/DC Controller 550kHz, 6-Pin SOT-23, I
OUT
Up to 5A, V
IN
from 2.2V to 10V
LTC1877 High Efficiency Monolithic Step-Down Regulator 550kHz, MS8, V
IN
Up to 10V, I
Q
= 10µA, I
OUT
to 600mA
LINEAR TECHNOLOGY CORPORATION 2000
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
Single Li-Ion to 2.5V/0.5A Regulator with Precision 2.7V Undervoltage Lockout
V
OUT
2.5V
0.6A
C
IN
**
22µF
CER
20pF
887k
C
OUT
**
22µF
CER
*
**
220pF
10µH*
LTC1878
RUN
I
TH
V
FB
GND
8
7
6
5
1
2
3
4
PLL LPF
SYNC/MODE
V
IN
SW
LTC1540
GND
V
–
IN
+
IN
–
8
7
6
5
1
2
3
4
OUT
V
+
REF
HYS
V
IN
2.7V TO 4.2V
TOKO D62CB A920CY-100M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
1878 TA08
412k
44.2k
1%
1.58M
1%
1.18M
1%
0.01µF
0.1µF
10k
2.37M
1%
TYPICAL APPLICATIO
U
Dimensions in inches (millimeters) unless otherwise noted.
MS8 Package
8-Lead Plastic MSOP
(LTC DWG # 05-08-1660)
U
PACKAGE DESCRIPTIO
MSOP (MS8) 1098
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
0.021
± 0.006
(0.53 ± 0.015)
0
° – 6° TYP
SEATING
PLANE
0.007
(0.18)
0.040
± 0.006
(1.02 ± 0.15)
0.012
(0.30)
REF
0.006 ± 0.004
(0.15 ± 0.102)
0.034 ± 0.004
(0.86 ± 0.102)
0.0256
(0.65)
BSC
12
3
4
0.193 ± 0.006
(4.90 ± 0.15)
8
7
6
5
0.118 ± 0.004*
(3.00 ± 0.102)
0.118 ± 0.004**
(3.00 ± 0.102)
