參數(shù)資料
型號: LTC3775IMSE#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, PDSO16
封裝: LEAD FREE, PLASTIC, MSOP-16
文件頁數(shù): 28/34頁
文件大小: 534K
代理商: LTC3775IMSE#PBF
LTC3775
34
3775fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2009
LT 0810 REV A PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LTC3854
Small Footprint Wide VIN Range 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
Wide VIN Range Synchronous Step-Down DC/DC Controller Phase-Lockable Fixed Operating Frequency 250kHz to 750kHz, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 5.25V, MSOP-16E, 3mm × 3mm QFN-16, SSOP-16
LTC3878/
LTC3879
No RSENSE Constant On-Time Synchronous Step-Down
DC/DC Controller
Very Fast Transient Response, tON(MIN) = 43ns, 4V ≤ VIN ≤ 38V,
0.8V ≤ VOUT ≤ 0.9VIN, SSOP-16, MSOP-16E, 3mm × 3mm QFN-16
LTC3850/
LTC3850-1/
LTC3850-2
Dual 2-Phase, High Efciency Synchronous Step-Down
DC/DC Controllers, RSENSE or DCR Current Sensing and
Tracking
Phase-Lockable Fixed Operating Frequency 250kHz to 780kHz,
4V ≤ VIN ≤ 30V, 0.8V ≤ VOUT ≤ 5.25V
LTC3860
Dual, Multiphase Synchronous Step-Down DC/DC
Controller with Diff Amp and 3-State Output Drive
Operates with Power Blocks, DRMOS Devices or External MOSFETs
3V ≤ VIN ≤ 24V, tON(MIN) = 20ns
LTC3853
Triple Output, Multiphase Synchronous Step-Down DC/DC
Controller, RSENSE or DCR Current Sensing and Tracking
Phase-Lockable Fixed Operating Frequency 250kHz to 750kHz,
4V ≤ VIN ≤ 24V, VOUT Up to 13.5V
TYPICAL APPLICATION
Wide Input Range CPU Power Supply (Refer to Demo Board DC1290A-B)
TG
VIN
LTC3775
PGND
SENSE
ILIMT
ILIMB
INTVCC
INTVCC CMDSH-4E
RS1 (OPT)
BSC016NO4LSG
Q2
D1
(OPT)
L1
WURTH
744314110
1.1μH
Q4
(OPT)
Q3
(OPT)
1
4
23
5
Q1
INFINEON
BSC093NO4LSG
VOUT
INTVCC
RUN
MODE
SS
C6
10nF
R16
(OPT)
R9
56.2k
BG
MODE/
SYNC
COMP
BOOST
SW
FREQ
FB
1
2
16
C3
330pF
C2
0.022μF
C8 100pF
CIN5 0.1μF
50V
C1
0.1μF
R6
10k
1%
R1
1.62k
R15
R5
2k
C4
4700pF
R2
31.6k
RS2
RSNS2
(OPT)
RSNS1
0.004Ω
R3 4.7
R8
R7
1.82k
5
SGND
7
15
4
6
3
11
14
10
17
9
12
8
13
R4
10k
1%
C5
4.7μF
10V
1
4
23
5
3775 TA05
COUT4
100μF
6.3V
COUT1
470μF
4V
SANYO
POSCAP
4TPF470MU
VOUT
+
VOUT
1.2V/10A
GND
VOUT
COUT2
470μF
4V
COUT5
(OPT)
E3
J3
J4
E4
COUT3
1μF
6.3V
X5R
+
CIN2
4.7μF
50V
CIN3
4.7μF
50V
VIN
+
VIN
5V TO 36V
GND
VIN
CIN4
(OPT)
E1
J1
J2
E2
CIN1
100μF
50V
+
VIN = 5V TO 36V
VOUT = 1.2V/10A
FS = 350kHz
INTVCC
1
2
3
4
JP1
MODE
R13 1k
MODE
PULSE-SKIPPING
SYNC
FCC
SGND
SYNC
E8
E6
VOUT
VIN
1
2
3
JP2
C7
(OPT)
R12
(OPT)
R14
(OPT)
ON
OFF
RUN
E7
D2
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