參數(shù)資料
型號(hào): LTC1705EGN
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
中文描述: 5 A DUAL SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO28
封裝: 0.150 INCH, PLASTIC, SSOP-28
文件頁數(shù): 28/28頁
文件大?。?/td> 326K
代理商: LTC1705EGN
LTC1705
28
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2001
1705fa LT/TP 0801 1.5K REV A PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATIO
U
PART NUMBER
LTC1628/LTC1628-PG Dual High Efficiency 2-Phase Synchronous Step-Down Controller
DESCRIPTION
COMMENTS
Constant Frequency, Standby 5V and 3.3V LDOs,
3.5V
V
IN
36V
Mobile VID Control with 25MHz GBW Voltage Mode, V
IN
7V
LTC1703
Dual 550kHz Synchronous 2-Phase Switching Regulator
Controller with VID
Dual, 2-Phase Synchronous Step-Down Controller with 5-Bit VID
LTC1708
Mobile CPU VID, Dual Output 3.5V
V
IN
36V,
Minimum C
IN
and C
OUT
Output Fault Protection, Power Good Output, 3.5V to 36V Input
LTC1736
Synchronous Step-Down Controller with 5-Bit VID Control
SWC
BGC
I
MAXC
SENSEC
FBC
6
4
8
13
11
27k
180
μ
F
4V
×
6
L3
0.68
μ
H
QB1B
QB2
QB1A
PV
CC
VID0
VID0
14
PGOOD
LTC1705
V
CC
TGC
BOOSTC
5
3
2
22
19
+
100
μ
F
4V
×
2
+
150
μ
F
6.3V
×
2
1
μ
F
V
0.9V TO 2V
15A
+
QT2
1
μ
F
D6
MBR0520LT1
QT1A
QT1B
16k
L4
3
μ
H
V
OUTIO
1.5V
3A
V
2.5V
150mA
1.8k
11k
COMPC
RUN/SS
10
5k
1
μ
F
D7
MBR
0520LT1
10
10
μ
F
1800pF
1
μ
F
1
μ
F
10
μ
F
10V
10
μ
F
10V
1
μ
F
1705 TA02
+
1800pF
330pF
100pF
1
μ
F
2200pF
10k
1%
9
PGND
GND
7
0.1
μ
F
COREENABLE
Q1, Q2, Q3: IRF7805
Q4, Q5: IRF7807
L1: ETQP6F2R9L
L2: ETQP6F4R6H
QT1A, QT1B, QB1A, QB1B: FAIRCHILD FDS6670A
QT2, QB2: NDS8926
L3: SUMIDA CEP125-4712-T007
L4: SUMIDA CDRH6D28-3R0
+
12
SWIO
BGIO
I
MAXIO
25
28
1
COMPIO
21
TGIO
26
27
BOOSTIO
FBIO
20
V
INCLK
24
V
OUTCLK
VID4
23
11k
8.87k
1%
SW1
BG1
SENSE1
+
26
23
2
SENSE1
EXTV
CC
3
150
μ
F
6.3V
×
2
D5
MBRD
835L
D4
MBRS
130T3
L1
2.9
μ
H
4m
Q3
Q4
INTV
CC
LTC1628
FLTCPL
V
IN
V
OSENSE1
RUN/SS1
I
TH1
TG1
BOOST1
27
25
21
24
L5, 0.33
μ
H
D03316P-331HC
+
C
IN
22
μ
F
50V
0.1
μ
F
50V
V
OUT1
5V
4A
STDBY5V
+
Q5
0.22
μ
F
D1
CMDSH-3
Q2
Q1
22
1
8
9
5
7
28
4
PGND
1000pF
10
1000pF
0.1
μ
F
D2
CMDSH-3
105k
1%
20k
1%
10
0.1
μ
F
50V
1
μ
F
4.7
μ
F
+
10
μ
F
6.3V
100pF
47pF
0.1
μ
F
50V
SGND
FREQSET
FCB
SW2
BG2
SENSE2
+
SENSE2
STBYMD
V
OSENSE2
RUN/SS2
TG2
BOOST2
I
TH2
3.3V
OUT
17
19
14
13
20
12
15
11
10
6
16
18
180
μ
F
4V
L2
4.6
μ
H
10m
+
V
3.3V
5A
V
7V TO 20V
63.4k
1%
20k
1%
10
μ
F
6.3V
100pF
47pF
0.1
μ
F
33k
10
10
10
330pF
180pF
0.1
μ
F
5V
ENABLE
33k
330pF
0.1
μ
F
3.3V
ENABLE
0.1
μ
F
STDBY3.3V
0.01
μ
F
STDBYMD
180pF
VID1
VID1
15
VID2
VID2
16
VID3
VID3
17
VID4
18
+
D5
MBRD
835L
Complete 2-Step Notebook Power Supply
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