LT3845 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT3845 Datasheet PDF : 26 Pages
| |||
LT3845
TYPICAL APPLICATION
9V-16V to 3.3V at 5A DC/DC Converter, Frequency Synchronization Range 150kHz to 300kHz,
Capable of Withstanding 60V Transients, All Ceramic Capacitors, Soft-Start and Burst Mode Enabled
VIN
9V TO 16V
60V TRANSIENTS
CIN
2.2μF
100V
×4
CIN2
0.1μF
100V
R3
1.1M
C3
8200pF
R1
10k
R2
C1
16.8k 100pF
SYNC
R4
R5
10k
100k
C2
R6
5600pF 130k
VIN
BOOST
SHDN
TG
LT3845
CSS
SW
BURST_EN
VCC
VFB
BG
VC
SYNC
PGND
SENSE+
fSET
SENSE–
SGND
C5
1μF
16V
D2 BAS521
M1
L1
RSENSE
Si7850DP 10μH 0.01Ω
M2
Si7850DP
D1
B160
C4
2.2μF
16V
CIN: TDK C4532X7R2A225K
COUT: MURATA GRM32ER60J107ME20
L1: VISHAY IHLP-5050FD-01
M1, M2: VISHAY Si7850DP
VOUT
3.3V
5A
COUT
100μF
6.3V
×4
3845 TA04
RELATED PARTS
PART NUMBER
LT3800
LT3844
LT3724
LTC3812-5
LTC3810
LT3758
LT3757
LTC3824
LTC3834/
LTC3834-1
LTC3835/
LTC3835-1
LTC3857/
LTC3857-1
LTC3858/
LTC3858-1
DESCRIPTION
COMMENTS
High Voltage Low IQ Synchronous Step-Down DC/DC
Controller
High Voltage Low IQ Switching Regulator DC/DC Controller
High Voltage Low IQ Switching Regulator DC/DC Controller
High Voltage Synchronous Step-Down DC/DC Controller
100V Synchronous Step-Down DC/DC Controller
100V Boost, Flyback, SEPIC and Inverting Controller
Fixed 200kHz Operating Frequency 4V≤ VIN ≤ 60V, 1.23V ≤ VOUT ≤ 36V,
IQ = 100μA, TSSOP-16
Synchronizable Fixed Operating Frequency 100kHz to 600kHz,
4V ≤ VIN ≤ 60V, 1.23V ≤ VOUT ≤ 36V, IQ = 120μA, TSSOP-16
Fixed 200kHz Operating Frequency 4V ≤ VIN ≤ 60V, 1.23V ≤ VOUT ≤ 36V,
IQ = 100μA, TSSOP-16
4.2V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 0.9VIN, TSSOP-16
6.2V ≤ VIN ≤ 100V, 0.8V ≤ VOUT ≤ 0.9VIN, SSOP-28
5.5V ≤ VIN ≤ 100V, Selectable Operating Frequency 100kHz to 1MHz
3mm × 3mm DFN-10 and MSOP-10E Package
Boost, Flyback, SEPIC and Inverting Controller
2.9V ≤ VIN ≤ 40V, Selectable Operating Frequency 100kHz to 1MHz
3mm × 3mm DFN-10 and MSOP-10E Package
High Voltage Low IQ DC/DC Controller, 100% Duty Cycle
Low IQ, Synchronous Step-Down Controllers
Selectable Fixed Operating Frequency 200kHz to 600kHz 4V ≤ VIN ≤ 60V,
0.8V ≤ VOUT ≤ VIN, IQ = 40μA, MSOP-10E
30μA IQ, 4V ≤ VIN ≤ 36V, 0.8V ≤ VOUT ≤ 10V
Low IQ, Synchronous Step-Down Controllers
80μA IQ, 4V ≤ VIN ≤ 36V, 0.8V ≤ VOUT ≤ 10V
Low IQ, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controller with 99% Duty Cycle
Low IQ, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controller with 99% Duty Cycle
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ VIN ≤ 38V, 0.8V ≤ VOUT ≤ 24V, IQ = 50μA
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ VIN ≤ 38V, 0.8V ≤ VOUT ≤ 24V, IQ = 170μA,
26 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3845fd
LT 0110 REV D • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006
Share Link: 