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LTC1921 数据表(PDF) 2 Page - Linear Technology

部件名 LTC1921
功能描述  Dual 48V Supply and Fuse Monitor
PDF  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1921 数据表(HTML) 2 Page - Linear Technology

  LTC1921 Datasheet HTML 1Page - Linear Technology LTC1921 Datasheet HTML 2Page - Linear Technology LTC1921 Datasheet HTML 3Page - Linear Technology LTC1921 Datasheet HTML 4Page - Linear Technology LTC1921 Datasheet HTML 5Page - Linear Technology LTC1921 Datasheet HTML 6Page - Linear Technology LTC1921 Datasheet HTML 7Page - Linear Technology LTC1921 Datasheet HTML 8Page - Linear Technology LTC1921 Datasheet HTML 9Page - Linear Technology Next Button
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LTC1921
2
1921f
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1) All voltages referred to RTN
Supply Voltage
(VA, VB, FUSE A, FUSE B) ....................... 100V to –100V
Transient Voltage (VA, VB, FUSE A, FUSE B)
(Note 2) ........................................................ 0V to 200V
Transient Voltage (VA, VB, FUSE A, FUSE B)
(Note 2) ...................................................... 0V to –200V
OUT A, OUT B, OUT F Pins ......................... 0.3V to – 8V
ORDER PART
NUMBER
LTC1921CMS8
LTC1921IMS8
TJMAX = 150°C, θJA = 300°C/W
MS8 PART MARKING
LTZV
LTZU
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 5) RTN = 0V, VA = –48V, VB = –48V, FUSE A = –48V,
FUSE B = –48V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
Supply Voltage Range (RTN – VA, RTN – VB)
q
10
80
V
Supply Current (IA + IB)
–160
–250
µA
q
–300
µA
Supply Monitor
Undervoltage Threshold
q
–39.5
–37.5
V
Undervoltage Recovery Threshold
q
–43.5
–42.5
V
Overvoltage Threshold
q
–71.5
–68.5
V
Overvoltage Threshold Hysteresis
q
1
1.6
V
Fuse Monitor
Input Resistance, FUSE A, FUSE B
11
M
Ω
Fuse Comparison Threshold |VFUSEA – VA|, |VFUSEB – VB|
V
LTC1921C
q
0.9
4.5
V
LTC1921I
q
0.5
4.5
V
Output
Propagation Delay
COUT = 100pF, Overdrive = 1V
220
µs
Output Switch Resistance, OUT F, OUT A, OUT B
VA = VB = –35V, VFUSEA = VFUSEB = 0V
25
Ω
IOUT = 10mA
q
50
Ω
Maximum Junction Temperature ......................... 150
°C
Operating Temperature Range (Note 3)
LTC1921C/LTC1921I .......................... – 40
°C to 85°C
Specified Temperature Range (Note 4)
LTC1921C/LTC1921I .......................... – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
ORDER PART
NUMBER
LTC1921CS8
LTC1921IS8
S8 PART MARKING
1921
1921I
ELECTRICAL CHARACTERISTICS
1
2
3
4
VA
FUSE A
RTN
OUT F
8
7
6
5
VB
FUSE B
OUT B
OUT A
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
1
2
3
4
8
7
6
5
TOP VIEW
VB
FUSE B
OUT B
OUT A
VA
FUSE A
RTN
OUT F
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W



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