LT1725IGN Linear Technology, LT1725IGN Datasheet - Page 2

• Manufacturer Part Number: LT1725IGN
• Description: IC CNTRLR ISOLATD FLYBACK 16SSOP
• Manufacturer: Linear Technology
• Type: Flybackr

Specifications of LT1725IGN

• 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-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -

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