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LT1931 数据表(PDF) 2 Page - Linear Technology

部件名 LT1931
功能描述  1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1931 数据表(HTML) 2 Page - Linear Technology

  LT1931 Datasheet HTML 1Page - Linear Technology LT1931 Datasheet HTML 2Page - Linear Technology LT1931 Datasheet HTML 3Page - Linear Technology LT1931 Datasheet HTML 4Page - Linear Technology LT1931 Datasheet HTML 5Page - Linear Technology LT1931 Datasheet HTML 6Page - Linear Technology LT1931 Datasheet HTML 7Page - Linear Technology LT1931 Datasheet HTML 8Page - Linear Technology LT1931 Datasheet HTML 9Page - Linear Technology Next Button
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LT1931/LT1931A
1931fa
LT1931
LT1931A
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Minimum Operating Voltage
2.45
2.6
2.45
2.6
V
Maximum Operating Voltage
16
16
V
Feedback Voltage
– 1.275 – 1.255 – 1.235
–1.275 –1.255 –1.235
V
– 1.280
– 1.230
–1.280
–1.230
V
NFB Pin Bias Current
VNFB = –1.255V
48
8
16
µA
Quiescent Current
VSHDN = 2.4V, Not Switching
4.2
6
5.8
8
mA
Quiescent Current in Shutdown
VSHDN = 0V, VIN = 3V
0.01
1
0.01
1
µA
Reference Line Regulation
2.6V
≤ VIN ≤ 16V
0.01
0.05
0.01
0.05
%/V
Switching Frequency
1
1.2
1.4
1.8
2.2
2.6
MHz
0.85
1.6
1.6
2.9
MHz
Maximum Duty Cycle
84
90
75
82
%
Switch Current Limit
(Note 3)
1
1.2
2
1
1.2
2.5
A
Switch VCESAT
ISW = 1A
400
600
400
600
mV
Switch Leakage Current
VSW = 5V
0.01
1
0.01
1
µA
SHDN Input Voltage, High
2.4
2.4
V
SHDN Input Voltage, Low
0.5
0.5
V
SHDN Pin Bias Current
VSHDN = 3V
16
32
35
70
µA
VSHDN = 0V
0
0.1
0
0.1
µA
(Note 1)
VIN Voltage .............................................................. 16V
SW Voltage ................................................– 0.4V to 36V
NFB Voltage ............................................................. – 2V
Current Into NFB Pin ............................................
±1mA
SHDN Voltage .......................................................... 16V
Maximum Junction Temperature .......................... 125
°C
Operating Temperature Range (Note 2) .. – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
The
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VIN = 3V, VSHDN = VIN, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1931E/LT1931AE are guaranteed to meet performance
specifications from 0
°C to 70°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls. LT1931I/LT1931AI are
guaranteed over the –40
°C to 85°C temperature range.
Note 3: Current limit guaranteed by design and/or correlation to static test.
TJMAX = 125°C, θJA = 150°C/ W
ORDER PART NUMBER
S5 PART MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LT1931ES5
LT1931AES5
LT1931IS5
LT1931AIS5
LTRA
LTSP
LTBZF
LTBZG
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF
Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
SW 1
GND 2
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
NFB 3
5 VIN
4 SHDN


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