參數(shù)資料
型號: LTC1266IS#TR-5
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO16
封裝: 0.150 INCH, PLASTIC, SO-16
文件頁數(shù): 9/20頁
文件大?。?/td> 245K
代理商: LTC1266IS#TR-5
17
LTC1266
LTC1266-3.3/LTC1266-5
helpful in eliminating instabilities at high input voltage and
high output loads.
6. Is the shutdown (Pin 11) actively pulled to ground
during normal operation? The shutdown pin is high im-
pedance and must not be allowed to float. The select (Pins
3 and 4) are also high impedance and must be tied high or
low depending on the application.
3. Are the SENSEand SENSE+ leads routed together with
minimum PC trace spacing? The 1000pF capacitor be-
tween Pins 8 and 9 should be as close as possible to the
LTC1266.
4. Does the (+) plate of CIN connect to the source of the
topside MOSFET as closely as possible? This capacitor
provides the AC current to the topside MOSFET.
5. A 0.1
F to 1F decoupling capacitor connected be-
tween VIN (Pin 5) and ground is optional, but is sometimes
(Layout Assist Schematics)
Figure 11. Low Dropout, 3.3V/3A High Efficiency Regulator
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TDRIVE
PWR VIN
PINV
BINH
VIN
CT
ITH
SENSE
BDRIVE
PGND
LBOUT
LBIN
SGND
SHDN
NC
SENSE+
LTC1266-3.3
1
F
1000pF
SHUTDOWN
BINH
RSENSE
0.033
L*
10
H
Si9410DY
D1
MBRS140T3
Si9430DY
+
CIN
100
F
25V
VIN
≈3.9V TO 18V
(VIN(MIN) = 3.5V IF ILOAD < 0.8A)
+
COUT
220
F
10V
2
×
VOUT
3.3V
3A
CC
3300pF
RC
1k
CT
220pF
1266 F11
DALE LPT4545-A001
COILTRONICS CTX10-4
*
+
APPLICATIO S I FOR ATIO
WU
UU
TYPICAL APPLICATIO S
U
相關(guān)PDF資料
PDF描述
LTC1266IS-5 SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO16
LTC1474CS8-3.3#TR 0.75 A SWITCHING REGULATOR, PDSO8
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LTC1530CS8-1.9#TR SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO8
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