参数资料
型号: LTC3835EUFD#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 3 A SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PQCC20
封装: 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-20
文件页数: 24/30页
文件大小: 1775K
代理商: LTC3835EUFD#PBF
LTC3835
30
3835fd
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2008
LT 1110 REV D PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
Figure 11. High Efficiency Step-Down Converter
VOUT
3.3V
5A
COUT
150F
0.01F
VIN
4V TO
36V
M1
M2
ITH
SGND
PLLIN/MODE
VFB
SENSE+
SENSE
CLKOUT
PLLLPF
RUN
PGOOD
TRACK/SS
INTVCC
EXTVCC
BG
PGND
LTC3835
L1
3.3H
0.012
68.1k
3835 TA06
100pF
1200pF
10k
215k
M1, M2: Si7848DP
L1: CDEP105-3R2M
COUT: SANYO 10TPD150M
4.7F
DB
CMDSH-3
CB
0.22F
TG
VIN
BOOST
SW
CIN
10F
39pF
PART NUMBER
DESCRIPTION
COMMENTS
LTC3891
60V, Low IQ Synchronous Step-Down DC/DC Controller with
99% Duty Cycle and Low 95ns Minimum On-Time
PLL Capable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 24V, IQ = 50A
LTC3834/
LTC3834-1
Low IQ, Synchronous Step-Down DC/DC Controller with 99%
Duty Cycle
PLL Fixed Operating Frequency 140kHz to 900kHz,
4V ≤ VIN ≤ 38V, 0.8V ≤ VOUT ≤ 10V, IQ = 30A
LTC3824
60V, Low IQ DC/DC Controller with 100% Duty Cycle
Selectable Fixed Operating Frequency 200kHz to 600kHz,
4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ VIN , IQ = 40A, MSOP-10E
LT3845A
60V, Low IQ Synchronous Step-Down DC/DC Controller
Adjustable Fixed Operating Frequency 100kHz to 500kHz,
4V ≤ VIN ≤ 60V, 1.23V ≤ VOUT ≤ 36V, IQ = 120A, TSSOP-16E
LTC3890/
LTC3890-1
Low IQ, Dual Output 2-Phase Synchronous Step-Down DC/DC
Controller
PLL Fixed Operating Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 60V,
0.8V ≤ VOUT ≤ 24V, IQ = 50A
LTC3857/
LTC3857-1
Low IQ, Dual Output 2-Phase Synchronous Step-Down DC/DC
Controller
PLL Fixed Operating Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 24V, IQ = 50A, Overcurrent Foldback
LTC3858/
LTC3858-1
Low IQ, Dual Output 2-Phase Synchronous Step-Down DC/DC
Controller
PLL Fixed Operating Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 24V, IQ = 170A, Overcurrent Latchoff
LTC3854
Small Footprint Synchronous Step-Down DC/DC Controller
Fixed 400kHz Operating Frequency, 4.5V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 5.25V, 2mm × 3mm QFN-12
LTC3851A/
LTC3851A-1
No RSENSE Wide VIN Range Synchronous Step-Down DC/DC
Controller
PLL Fixed Operating Frequency 250kHz to 750kHz, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 5.25V, MSOP-16E, 3mm × 3mm QFN-16, SSOP-16
LTC3827/
LTC3827-1
Low IQ, Dual Synchronous Controller
2-Phase Operation; 115A Total No Load IQ, 4V ≤ VIN ≤ 36V 80A
No Load IQ with One Channel On
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