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参数资料
| 型号： | LTC3785EUF-1#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 650 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封装： | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24 |
| 文件页数： | 12/20页 |
| 文件大小： | 213K |
| 代理商： | LTC3785EUF-1#PBF |
LTC3785-1
2
37851fa
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, <1μs ............................................. –2V to 12V
RUN/SS, MODE, CCM, VDRV, VCC Voltages .. –0.3V to 6V
PGOOD Voltage............................................ –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 < 10μs
(TG1, TG2, BG1, BG2).................................................3A
VCC Average Output Current.................................100mA
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range................... –65°C to 125°C
(Note 1)
24 23 22 21 20 19
7
8
9
TOP VIEW
25
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
BST1
TG1
SW1
RT
MODE
PGOOD
I SVOUT
V
BST2
TG2
TJMAX = 125°C, θJA = 37°C/W 4 LAYER BOARD
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3785EUF-1#PBF
LTC3785EUF-1#TRPBF
37851
24-Lead (4mm
× 4mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specied with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specications, go to: http://www.linear.com/tapeandreel/
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
μA
Quiescent Current—Shutdown
RUN/SS = 0V, ISVOUT = 3.6V
15
25
μA
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
Error Amp Source Current
–500
μA
Error Amp Sink Current
900
μA
Error Amp AVOL
90
dB
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = ISVOUT = VDRV = VBST1 = VBST2 = 3.6V, RT = 49.9k, RILSET = 59k.
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