LT1940EFE Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1940EFE Datasheet PDF : 20 Pages
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LT1940/LT1940L
TYPICAL APPLICATIO
Low Ripple, Low Profile 5V to 3.3V/2.4A Maximum Height = 1.4mm
VIN
4.8V TO 7V
C3
2.2µF
1nF
PGOOD
100k
4.7k
1500pF
0.47µF
VIN
RUN/SS1 BOOST1
RUN/SS2
PG1
SW1
PG2
LT1940L
VC1
VC2
BOOST2
D3B
0.1µF
D1
D4B
D3A
L1
3.3µH
D4A
330pF
16.5k
FB1
FB2
SW2
GND
10k
0.1µF
D2
L2
3.3µH
C1
20µF
D1, D2: MICROSEMI UPS120
C1: 2X TAIYO YUDEN JMK212BJ106ML
D3, D4: BAT-54S
C3: 2X TAIYO YUDEN EMK212BJ105MN
L1, L2: COILCRAFT LPO1704-332M
OUT2
3.3V
2.4A
1940 TA07
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1765
25V, 2.75A (IOUT), 1.25MHz,
High Efficiency Step-Down DC/DC Converter
VIN: 3V to 25V, VOUT(MIN): 1.20V, IQ: 1mA, ISD: 15µA
S8, TSSOP16E Package
LT1766
60V, 1.2A (IOUT), 200kHz,
High Efficiency Step-Down DC/DC Converter
VIN: 5.5V to 60V, VOUT(MIN): 1.2V, IQ: 2.5mA, ISD: 25µA
TSSOP16/TSSOP16E Package
LT1767
25V, 1.2A (IOUT), 1.25MHz,
High Efficiency Step-Down DC/DC Converter
VIN: 3V to 25V, VOUT(MIN): 1.2V, IQ: 1mA, ISD: 6µA
MS8, MS8E Package
LT1944
Dual Output 350mA ISW, Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN: 1.2V to 15V, VOUT(MAX): 34V, IQ: 20µA, ISD: <1µA,
MS Package
LT1944-1
Dual Output 150mA ISW, Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN: 1.2V to 15V, VOUT(MAX): 34V, IQ: 20µA, ISD: <1µA,
MS Package
LT1945
Dual Output, Pos/Neg, 350mA ISW, Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN: 1.2V to 15V, VOUT(MAX): ±34V, IQ: 20µA, ISD: <1µA,
MS Package Package
LT1956
60V, 1.2A (IOUT), 500kHz,
High Efficiency Step-Down DC/DC Converter
VIN: 5.5V to 60V, VOUT(MIN): 1.2V, IQ: 2.5mA, ISD: 25µA
TSSOP16/TSSOP16E Package
LTC3407
LTC3411
Dual 600mA, 1.5MHz, Synchronous Step-Down Regulator VIN: 2.5V to 5.5V, VOUT(MIN): 0.6V, IQ: 40µA, MSE Package
1.25A (IOUT), 4MHz,
Synchronous Step-Down DC/DC Converter
VIN: 2.5V to 5.5V, VOUT(MIN): 0.8V, IQ: 60µA, ISD: <1µA
MS Package
LTC3412
2.5A (IOUT), 4MHz,
Synchronous Step-Down DC/DC Converter
VIN: 2.5V to 5.5V, VOUT(MIN): 0.8V, IQ: 60µA, ISD: <1µA
TSSOP16E Package
LT3430
60V, 2.75A (IOUT), 200kHz,
High Efficiency Step-Down DC/DC Converter
VIN: 5.5V to 60V, VOUT(MIN): 1.20V, IQ: 2.5mA, ISD: 25µA
TSSOP16E Package
LTC3701
Two Phase,Dual, 500kHz, Constant Frequency,
Current Mode, High Efficiency Step-Down
DC/DC Controller
VIN: 2.5V to 10V, VOUT(MIN): 0.8V, IQ: 460µA, ISD: 9µA
SSOP-16 Package
1940fa
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
LT/TP 0204 1K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001
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