LT1725IS データシートの表示（PDF） - Linear Technology
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LT1725IS Datasheet PDF : 28 Pages
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LT1725
ABSOLUTE AXI U RATI GS
(Note 1)
VCC Supply Voltage ................................................. 22V
UVLO Pin Voltage .................................................... VCC
ISENSE Pin Voltage .................................................... 2V
FB Pin Current ..................................................... ±2mA
Operating Junction
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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
PGND 1
ISENSE 2
SFST 3
ROCMP 4
RCMPC 5
OSCAP 6
VC 7
FB 8
16 GATE
15 VCC
14 tON
13 ENDLY
12 MINENAB
11 SGND
10 UVLO
9 3VOUT
GN PACKAGE
S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 110°C/W (GN)
TJMAX = 125°C, θJA = 100°C/W (SO)
ORDER PART NUMBER GN PART MARKING
LT1725CGN
LT1725IGN
LT1725CS
LT1725IS
1725
1725I
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 TA = 25°C. VCC = 14V, GATE open, VC = 1.4V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
Power Supply
VCC
VCC Turn-On Voltage
VCC Turn-Off Voltage
VCC Hysteresis (Note 3)
ICC
Supply Current
Start-Up Current
(VTURN-ON – VTURN-OFF)
VC = Open
● 14.0
15.1
16.0
●8
9.7
11
● 4.0
5.4
6.5
●6
●
10
15
120
280
Feedback Amplifier
VFB
Feedback Voltage
1.230
● 1.220
1.245
1.260
1.270
IFB
gm
ISRC, ISNK
VCL
Feedback Pin Input Current
Feedback Amplifier Transconductance
Feedback Amplifier Source or Sink Current
Feedback Amplifier Clamp Voltage
Reference Voltage/Current Line Regulation
Voltage Gain
Soft-Start Charging Current
Soft-Start Discharge Current
∆lC = ±10µA
12V ≤ VIN ≤ 18V
VC = 1V to 2V
VSFST = 0V
VSFST = 1.5V, VUVLO = 0V
● 400
● 30
●
25
0.8
500
1000
1800
50
80
2.5
0.01
0.05
2000
40
50
1.5
UNITS
V
V
V
mA
µA
V
V
nA
µmho
µA
V
%/V
V/V
µA
mA
1725fa
2
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