LTC1878 LINER [Linear Technology], LTC1878 Datasheet - Page 16

• Manufacturer Part Number: LTC1878
• Description: High Efficiency Monolithic Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

PACKAGE DESCRIPTIO
TYPICAL APPLICATIO
LTC1878
RELATED PARTS
PART NUMBER
LTC1174/LTC1174-3.3
LTC1174-5
LTC1265
LTC1474/LTC1475
LTC1504A
LTC1622
LTC1626
LTC1627
LTC1701
LTC1707
LTC1772
LTC1877
16
1.58M
1%
1.18M
1%
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
(0.18)
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
0.007
1
2
3
4
* 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
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
GND
V
IN
IN
–
LTC1540
+
–
DESCRIPTION
High Efficiency Step-Down and Inverting DC/DC Converters
1.2A, High Efficiency Step-Down DC/DC Converter
Low Quiescent Current Step-Down DC/DC Converters
Monolithic Synchronous Step-Down Switching Regulator
Low Input Voltage Current Mode Step-Down DC/DC Controller
Low Voltage, High Efficiency Step-Down DC/DC Converter
Monolithic Synchronous Step-Down Switching Regulator
Monolithic Current Mode Step-Down Switching Regulator
Monolithic Synchronous Step-Down Switching Regulator
Low Input Voltage Current Mode Step-Down DC/DC Controller
High Efficiency Monolithic Step-Down Regulator
OUT
HYS
REF
V
+
(0.53 0.015)
0.021 0.006
8
7
6
5
Single Li-Ion to 2.5V/0.5A Regulator with Precision 2.7V Undervoltage Lockout
44.2
1%
2.37M
1%
0 – 6 TYP
U
0.1 F
220pF
0.01 F
U
SEATING
10k
Dimensions in inches (millimeters) unless otherwise noted.
PLANE
**
0.040 0.006
*
(1.02 0.15)
(0.30)
0.012
TOKO D62CB A920CY-100M
TAIYO-YUDEN CERAMIC JMK325BJ226MM
REF
1
2
3
4
(LTC DWG # 05-08-1660)
8-Lead Plastic MSOP
RUN
I
V
GND
TH
FB
0.0256
(0.65)
BSC
MS8 Package
LTC1878
SYNC/MODE
PLL LPF
SW
V
IN
8
7
6
5
(0.86 0.102)
0.034 0.004
(0.15 0.102)
0.006 0.004
10 H*
COMMENTS
Monolithic Switching Regulators, I
Burst Mode Operation
Constant Off-Time, Monolithic, Burst Mode Operation
Monolithic, I
Low Cost, Voltage Mode I
High Frequency, High Efficiency, 8-Pin MSOP
Monolithic, Constant Off-Time, I
Low Supply Voltage Range: 2.5V to 6V
Constant Frequency, I
Regulation, V
Constant Off-Time, I
V
1.19V V
V
550kHz, 6-Pin SOT-23, I
550kHz, MS8, V
IN
IN
from 2.5V to 5.5V
from 2.65V to 8.5V
20pF
REF
0.193 0.006
0.118 0.004*
(3.00 0.102)
(4.90 0.15)
Pin, Constant Frequency, I
OUT
887k
412k
IN
1878 TA08
from 2.65V to 8.5V
IN
to 250mA, I
Up to 10V, I
OUT
OUT
C
22 F
CER
OUT
to 500mA, 1MHz Operation,
OUT
1
8
OUT
to 500mA, Secondary Winding
**
LINEAR TECHNOLOGY CORPORATION 2000
7 6 5
2 3
Q
Up to 5A, V
to 500mA, V
= 10 A, 8-Pin MSOP
Q
V
2.5V
0.6A
1878i LT/TP 0500 4K • PRINTED IN USA
OUT
OUT
= 10 A, I
4
OUT
to 600mA,
MSOP (MS8) 1098
(3.00 0.102)
OUT
0.118 0.004**
to 450mA,
IN
OUT
C
22 F
CER
IN
from 2.2V to 10V
to 600mA,
IN
**
from 4V to 10V
to 600mA
V
2.7V TO 4.2V
IN