LT1725IS Linear Technology, LT1725IS Datasheet - Page 2
LT1725IS
Manufacturer Part Number
LT1725IS
Description
IC CNTRLR ISOLATD FLYBACK 16SOIC
Manufacturer
Linear Technology
Type
Flybackr
Datasheet
1.LT1725ISPBF.pdf
(28 pages)
Specifications of LT1725IS
Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Frequency - Switching
50kHz ~ 250kHz
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output
-
Voltage - Output
-
Voltage - Input
-
Power - Output
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1725IS
Manufacturer:
LT/凌特
Quantity:
20 000
Company:
Part Number:
LT1725IS#PBF
Manufacturer:
LT
Quantity:
800
Part Number:
LT1725IS#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1725IS#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
ABSOLUTE AXI U RATI GS
LT1725
(Note 1)
V
UVLO Pin Voltage .................................................... V
I
FB Pin Current ..................................................... ±2mA
Operating Junction
Temperature Range
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
Power Supply
V
I
Feedback Amplifier
V
I
g
I
V
2
SENSE
CC
FB
SRC
CC
FB
m
CL
CC
LT1725C .............................................. 0°C to 100°C
LT1725I ........................................... –40°C TO 125°C
, I
Supply Voltage ................................................. 22V
SNK
Pin Voltage .................................................... 2V
PARAMETER
V
V
V
Supply Current
Start-Up Current
Feedback Voltage
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
CC
CC
CC
Turn-On Voltage
Turn-Off Voltage
Hysteresis (Note 3)
W
W W
U
A
= 25°C. V
CONDITIONS
(V
V
∆l
12V ≤ V
V
V
V
C
C
SFST
SFST
TURN-ON
C
The
= Open
= 1V to 2V
= ±10µA
= 0V
= 1.5V, V
CC
●
IN
CC
denotes specifications which apply over the full operating
≤ 18V
– V
= 14V, GATE open, V
TURN-OFF
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
UVLO
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
ORDER PART NUMBER
= 0V
)
LT1725CGN
LT1725IGN
LT1725CS
LT1725IS
16-LEAD PLASTIC SSOP
C
OSCAP
R
R
I
PGND
GN PACKAGE
SENSE
OCMP
CMPC
SFST
= 1.4V unless otherwise noted.
T
T
V
JMAX
FB
JMAX
C
http://www.linear.com/leadfree/
●
●
●
●
●
●
●
●
●
1
2
3
4
5
6
7
8
= 125°C, θ
= 125°C, θ
1.230
1.220
14.0
MIN
TOP VIEW
400
4.0
0.8
30
25
8
6
JA
JA
16-LEAD PLASTIC SO
= 110°C/W (GN)
= 100°C/W (SO)
U
GN PART MARKING
S PACKAGE
16
15
14
13
12
11
10
1.245
9
1000
2000
15.1
0.01
TYP
120
500
9.7
5.4
2.5
1.5
10
50
40
GATE
V
t
ENDLY
MINENAB
SGND
UVLO
3V
ON
CC
OUT
1725
1725I
W
1.260
1.270
1800
MAX
16.0
0.05
280
6.5
11
15
80
50
UNITS
U
µmho
1725fa
%/V
mA
V/V
mA
µA
nA
µA
µA
V
V
V
V
V
V