LTC3404 Datasheet, PDF (16/16 Pages) Linear Technology – 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator

LTC3404
TYPICAL APPLICATIO
Single Li-Ion to 2.5V/0.5A Regulator with Precision 2.7V Undervoltage Lockout
1.58M
1%
1.18M
1%
LTC1540
1
8
GND OUT
2 _V–
V^{+ 7}
3 _IN+
6
REF
4 _IN–
5
HYS
44.2k
1%
2.37M
1%
0.1µF
10k
47pF
0.01µF
LTC3404
1
RUN
8
PLL LPF
2
7
I_TH SYNC/MODE
3
V_FB
6
V_IN
4
GND
5
SW
4.7µH*
*TOKO D52LC A914BYW-4R7M
**TAIYO-YUDEN CERAMIC JMK325BJ226MM
***TAIYO-YUDEN CERAMIC LMK325BJ106MN
20pF 887k
412k
3404 TA08
C_OUT**
22µF
CER
V_OUT
2.5V
0.6A
V_IN
C_IN*** ^{2.7V TO 4.2V}
10µF
CER
PACKAGE DESCRIPTIO _{Dimensions in inches (millimeters) unless otherwise noted.}
0.007
(0.18)
0° – 6° TYP
0.021 ± 0.006
(0.53 ± 0.015)
SEATING
PLANE
MS8 Package
8-Lead Plastic MSOP
(LTC DWG # 05-08-1660)
0.043
(1.10)
MAX
0.034
(0.86)
REF
0.118 ± 0.004*
(3.00 ± 0.102)
0.009 – 0.015
(0.22 – 0.38)
0.0256
(0.65)
BSC
0.005 ± 0.002
(0.13 ± 0.05)
MSOP (MS8) 1100
0.193 ± 0.006
(4.90 ± 0.15)
* 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
8 76 5
1 234
0.118 ± 0.004**
(3.00 ± 0.102)
RELATED PARTS
PART NUMBER
LTC1174/LTC1174-3.3
LTC1174-5
LTC1265
LTC1474/LTC1475
LTC1504A
LTC1622
LTC1626
LTC1627
LTC1701
LTC1707
LTC1772
LTC1877
LTC1878
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
High Efficiency Monolithic Step-Down Regulator
COMMENTS
Monolithic Switching Regulators, I_OUT to 450mA,
Burst Mode Operation
Constant Off-Time, Monolithic, Burst Mode Operation
Monolithic, I_OUT to 250mA, I_Q = 10µA, 8-Pin MSOP
Low Cost, Voltage Mode I_OUT to 500mA, V_IN from 4V to 10V
High Frequency, High Efficiency, 8-Pin MSOP
Monolithic, Constant Off-Time, I_OUT to 600mA,
Low Supply Voltage Range: 2.5V to 6V
Constant Frequency, I_OUT to 500mA, Secondary Winding
Regulation, V_IN from 2.65V to 8.5V
Constant Off-Time, I_OUT to 500mA, 1MHz Operation,
V_IN from 2.5V to 5.5V
1.19V V_REF Pin, Constant Frequency, I_OUT to 600mA,
V_IN from 2.65V to 8.5V
550kHz, 6-Pin SOT-23, I_OUT Up to 5A, V_IN from 2.2V to 10V
550kHz, MS8, V_IN Up to 10V, I_Q = 10µA, I_OUT to 600mA at V_IN = 5V
550kHz, MS8, V_IN Up to 6V, I_Q = 10µA, I_OUT to 600mA at V_IN = 3.3V
16 Linear Technology Corporation
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3404f LT/LCG 0201 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2000