Pins with Respect to VPORTN
參數(shù)資料
型號: DC1561A
廠商: Linear Technology
文件頁數(shù): 12/42頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR LTC4278
設計資源: DC1561A Design Files
標準包裝: 1
主要目的: 電源管理,以太網供電(POE)
嵌入式:
已用 IC / 零件: LTC4278
已供物品:
LTC4278
2
4278fc
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Pins with Respect to VPORTN
VPORTP Voltage......................................... –0.3V to 100V
VNEG Voltage......................................... –0.3V to VPORTP
VNEG Pull-Up Current ..................................................1A
SHDN....................................................... –0.3V to 100V
RCLASS, Voltage............................................ –0.3V to 7V
RCLASS Source Current...........................................50mA
PWRGD Voltage (Note 3)
Low Impedance Source ......VNEG –0.3V to VNEG +11V
Sink Current.........................................................5mA
PWRGD, T2P Voltage............................... –0.3V to 100V
PWRGD, T2P Sink Current.....................................10mA
Pins with Respect to GND
VCC Voltage................................................ –0.3V to 22V
SENSE, SENSE+ Voltage........................ –0.5V to +0.5V
UVLO, SYNC Voltage...................................–0.3V to VCC
FB Current..............................................................±2mA
VCMP Current .........................................................±1mA
Operating Ambient Temperature Range
LTC4278C ................................................ 0°C to 70°C
LTC4278I..............................................–40°C to 85°C
(Notes 1, 2)
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VPORTP
NC
PWRGD
NC
VNEG
NC
PG
PGDLY
RCMP
CCMP
SENSE+
SENSE
UVLO
VCMP
SHDN
T2P
RCLASS
NC
VPORTN
NC
SG
VCC
tON
ENDLY
SYNC
SFST
OSC
FB
TOP VIEW
DKD32 PACKAGE
32-LEAD (7mm × 4mm) PLASTIC DFN
TJMAX = 125°C,θJA = 34°C/W, θJC = 2°C/W
GND, EXPOSED PAD (PIN 33) MUST BE SOLDERED TO A
HEAT SINKING PLANE THAT IS CONNECTED TO VNEG
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4278CDKD#PBF
LTC4278CDKD#TRPBF
4278
32-Lead (7mm
× 4mm) Plastic DFN
0°C to 70°C
LTC4278IDKD#PBF
LTC4278IDKD#TRPBF
4278
32-Lead (7mm
× 4mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
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