LT3574IMS#PBF Linear Technology, LT3574IMS#PBF Datasheet - Page 2

• Manufacturer Part Number: LT3574IMS#PBF
• Description: IC PWM FLYBCK ISO CM 16MSOP
• Manufacturer: Linear Technology
• Type: Flyback, Isolated, PWM - Current Moder

Specifications of LT3574IMS#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adj to 60V
• Current - Output: 650mA
• Frequency - Switching: 40kHz ~ 1MHz
• Voltage - Input: 3 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: *
• Package / Case: 16-MSOP
• Voltage - Supply: 3 V ~ 40 V
• Frequency-max: 1MHz
• Duty Cycle: 52%
• Pwm Type: Current Mode
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

electrical characteristics
LT3574
absolute MaxiMuM ratings
temperature range, otherwise specifications are at T
PARAMETER
Input Voltage Range
Quiescent Current
Soft-Start Current
SHDN/UVLO Pin Threshold
SHDN/UVLO Pin Hysteresis Current
Soft-Start Threshold
Maximum Switching Frequency
Switch Current Limit
Minimum Current Limit
Switch V
R
R
R
I
Error Amplifier Voltage Gain
orDer inForMation

SW ............................................................................60V
V
SS, VC, T
Maximum Junction Temperature .......................... 125°C
Operating Junction Temperature Range
(Note 2) .................................................. –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
LEAD FREE FINISH
LT3574EMS#PBF
LT3574IMS#PBF
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
For more information on tape and reel specifications, go to:
REF
REF
REF
REF
IN
Reference Current
, SHDN/UVLO, R
Voltage
Voltage Line Regulation
Pin Bias Current
CESAT
C
, R
REF
, R
ILIM
FB
, BIAS .....................................40V
TAPE AND REEL
LT3574EMS#TRPBF
LT3574IMS#TRPBF
...............................................5V
CONDITIONS
SS = 0V
V
SS = 0.4V
UVLO Pin Voltage Rising
V
R
V
I
V
3V < V
(Note 3)
Measured at R
V
http://www.linear.com/leadfree/
SW
SHDN/UVLO
UVLO
ILIM
C
IN
IN
= 0V
PART MARKING*
3574
3574
= 3V
= 3V
= 0.5A
A
http://www.linear.com/tapeandreel/
= 10k
= 1V
IN
= 25°C. V
< 40V
= 0V
The
FB
Pin with R
l
IN
denotes the specifications which apply over the full operating
= 12V, unless otherwise noted.
pin conFiguration
REF
= 6.49k
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
SHDN/UVLO
T
JMAX
TEST
BIAS
GND
GND
GND
SW
V
IN
= 125°C, θ
1
2
3
4
5
6
7
8
16-LEAD PLASTIC MSOP
l
l
l
l
MS PACKAGE
JA
TOP VIEW
1.15
0.65
1.21
1.20
= 120°C/W, θ
MIN
3
2
1000
JC
1.22
1.23
0.01
TYP
100
150
100
190
150
3.5
2.5
0.7
0.9
0
7
16
15
14
13
12
11
10
9
= 21°C/W
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
GND
TC
R
R
VC
R
SS
GND
REF
FB
ILIM
MAX
1.29
1.25
1.25
0.03
250
600
1.1
40
1
3
UNITS
%/ V
3574f
kHz
V/V
mA
mA
mV
µA
µA
µA
nA
µA
V
V
A
V
V