参数资料
型号: LT1725IS#TRPBF
厂商: Linear Technology
文件页数: 2/28页
文件大小: 0K
描述: IC REG CTRLR FLYBK ISO CM 16SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 125kHz
占空比: 90%
电源电压: 最高 22V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
相关产品: 732-2262-6-ND - TRANS FLYBACK LT1725 20.4UH
732-2262-1-ND - TRANS FLYBACK LT1725 20.4UH
732-2262-2-ND - TRANS FLYBACK LT1725 20.4UH
LT1725
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
V CC Supply Voltage ................................................. 22V
TOP VIEW
UVLO Pin Voltage .................................................... V CC
I SENSE Pin Voltage .................................................... 2V
FB Pin Current ..................................................... ± 2mA
Operating Junction
PGND 1
I SENSE 2
SFST 3
R OCMP 4
16 GATE
15 V CC
14 t ON
13 ENDLY
3V OUT
Temperature Range
LT1725C .............................................. 0 ° C to 100 ° C
LT1725I ........................................... –40 ° C TO 125 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................ 300 ° C
R CMPC 5 12 MINENAB
OSCAP 6 11 SGND
V C 7 10 UVLO
FB 8 9
GN PACKAGE S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
T JMAX = 125 ° C, θ JA = 110 ° C/W (GN)
T JMAX = 125 ° C, θ JA = 100 ° C/W (SO)
ORDER PART NUMBER
LT1725CGN
LT1725IGN
GN PART MARKING
1725
1725I
LT1725CS
LT1725IS
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = 14V, GATE open, V C = 1.4V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
V CC
V CC Turn-On Voltage
V CC Turn-Off Voltage
14.0
8
15.1
9.7
16.0
11
V
V
V CC Hysteresis (Note 3)
(V TURN-ON – V TURN-OFF )
4.0
5.4
6.5
V
I CC
Supply Current
Start-Up Current
V C = Open
6
10
120
15
280
mA
μ A
Feedback Amplifier
V FB
I FB
Feedback Voltage
Feedback Pin Input Current
1.230
1.220
1.245
500
1.260
1.270
V
V
nA
g m
I SRC , I SNK
Feedback Amplifier Transconductance
Feedback Amplifier Source or Sink Current
? l C = ± 10 μ A
400
30
1000
50
1800
80
μ mho
μ A
V CL
Feedback Amplifier Clamp Voltage
2.5
V
Reference Voltage/Current Line Regulation
Voltage Gain
Soft-Start Charging Current
Soft-Start Discharge Current
12V ≤ V IN ≤ 18V
V C = 1V to 2V
V SFST = 0V
V SFST = 1.5V, V UVLO = 0V
25
0.8
0.01
2000
40
1.5
0.05
50
%/V
V/V
μ A
mA
1725fa
2
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