lt3825 Linear Technology Corporation, lt3825 Datasheet - Page 2

• Manufacturer Part Number: lt3825
• Description: Isolated No-opto Synchronous Flyback Controller With Wide Input Supply Range
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
The
V
LT3825
(Note 1)
V
UVLO, SYNC Pin Voltage ........................... –0.3V to V
SENSE
FB Pin Current ........................................................±2mA
V
Operating Junction Temperature Range
(Notes 2, 3) .......................................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PARAMETER
Power Supply
V
V
V
V
V
V
Feedback Amplifi er
Feedback Regulation Voltage (V
Feedback Pin Input Bias Current
Feedback Amplifi er Transconductance
Feedback Amplifi er Source or Sink Current
Feedback Amplifi er Clamp Voltage
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
2
LEAD FREE FINISH
LT3825EFE#PBF
LEAD BASED FINISH
LT3825EFE
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
CC
CC
CC
CC
CC
CC
CC
CC
C
Low Impedance Source ........................ –0.3V to 18V
Current Fed
(V
Pin Current ....................................................... ±1mA
Turn-On Voltage
Turn-Off Voltage
Hysteresis
Shunt Clamp
Supply Current (Note 5) (I
Start-Up Current
= 14V; PG, SG Open; V
l
to GND
CC
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
–
has Internal 19.5V Clamp) ...........30mA into V
, SENSE
+
Pin Voltage ...................... –0.5V, +0.5V
TAPE AND REEL
LT3825EFE#TRPBF
TAPE AND REEL
LT3825EFE#TR
C
CC
FB
= 1.5V, V
)
)
SENSE
–
= 0V; R
CONDITIONS
V
V
V
V
R
ΔI
V
V
http://www.linear.com/leadfree/
CC(ON)
UVLO
C
CC
FB
FB
CMP
C
PART MARKING
3825EFE
PART MARKING
3825EFE
= Open
CMP
= ±10μA
= 0.9V
= 1.4V
= 10V
http://www.linear.com/tapeandreel/
Open
= 0V, I
– V
= 1k, R
CC(OFF)
VCC
= 15mA
CC
CC
tON
= 90k, R
PIN CONFIGURATION
PACKAGE DESCRIPTION
16-Lead Plastic 4.4mm TSSOP
PACKAGE DESCRIPTION
16-Lead Plastic 4.4mm TSSOP
PGDLY
= 27.4k, R
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ENDLY
SYNC
T
SFST
OSC
JMAX
V
t
SG
ON
FB
CC
ENDLY
= 125°C, θ
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
l
●
●
●
●
●
●
●
●
= 90k, unless otherwise specifi ed.
FE PACKAGE
TOP VIEW
JA
17
1.220
= 40°C/W, θ
MIN
14.0
19.5
700
4.0
25
8
4
16
15
14
13
12
11
10
9
JC
1.237
1000
15.3
20.5
2.56
= 10°C/W
TYP
180
200
PG
PGDLY
R
C
SENSE
SENSE
UVLO
V
9.7
5.6
6.4
55
TEMPERATURE RANGE
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
CMP
C
CMP
+
–
1.251
MAX
1400
16.0
400
6.5
11
10
90
A
= 25°C.
UNITS
μmho
3525fa
mA
μA
nA
μA
V
V
V
V
V
V