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参数资料
| 型号： | LTC3785IUF#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封装： | 4 X 4 MM, PLASTIC, MO-220WGGD, QFN-24 |
| 文件页数： | 12/20页 |
| 文件大小： | 275K |
| 代理商： | LTC3785IUF#TR |
LTC3785
3785fc
The l denotes the specifications which apply over the full operating junction
temperature range, otherwise specifications are at TA = 25°C. VIN = ISVOUT = VDRV = VBST1 = VBST2 = 3.6V, RT = 49.9k, RILSET = 59k.
pin conFiguraTion
absoluTe MaxiMuM raTings
Input Supply Voltage (VIN)......................... –0.3V to 11V
ISVOUT, ISVIN .............................................. –0.3V to 11V
SW1, SW2, ISSW1, ISSW2 Voltage:
DC............................................................. –1V to 11V
Pulsed, <1s............................................. –2V to 12V
RUN/SS, MODE, CCM, VDRV, VCC Voltages.. –0.3V to 6V
VBST1 Voltage............................................. –0.3V to 16V
With Respect to SW1............................... –0.3V to 6V
VBST2 Voltage............................................. –0.3V to 16V
With Respect to SW2............................... –0.3V to 6V
Peak Driver Output Current < 10s
(TG1, TG2, BG1, BG2).................................................3A
VCC Average Output Current.................................100mA
Operating Junction Temperature Range
(Note 2)..................................................–40°C to 125°C
Junction Temperature ........................................... 125°C
Storage Temperature Range...................–65°C to 150°C
(Note 1)
24 23 22 21 20 19
7
8
9
TOP VIEW
25
GND
UF PACKAGE
24-LEAD (4mm 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
RUN/SS
VC
FB
VSENSE
ILSET
CCM
ISSW1
BG1
VDRV
BG2
ISSW2
SW2
V IN
V CC
I SVIN
V B
ST
1
TG1
SW1
RT
MODE
NC
I SVOUT
V BST2
TG2
TJMAX = 125°C, θJA = 40°C/W 1 LAYER BOARD, θJA = 30°C/W 4 LAYER BOARD
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Supply
Input Operating Voltage
l
2.7
10
V
Quiescent Current—Burst Mode Operation
VC = 0V, MODE = 3.6V (Note 4)
86
200
A
Quiescent Current—Shutdown
RUN/SS = 0V, ISVOUT = 3.6V
15
25
A
Quiescent Current—Active
MODE = 0V (Note 4)
0.8
1.5
mA
Error Amp
Feedback Voltage
(Note 5)
l
1.200
1.225
1.25
V
Feedback Input Current
1
500
nA
orDer inForMaTion
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3785EUF#PBF
LTC3785EUF#TRPBF
3785
24-Lead (4mm
× 4mm) Plastic QFN
–40°C to 85°C
LTC3785IUF#PBF
LTC3785IUF#TRPBF
3785
24-Lead (4mm
× 4mm) Plastic QFN
–40°C to 125°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3785EUF
LTC3785EUF#TR
3785
24-Lead (4mm
× 4mm) Plastic QFN
–40°C to 85°C
LTC3785IUF
LTC3785IUF#TR
3785
24-Lead (4mm
× 4mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
elecTrical characTerisTics
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