LT3574IMS#PBF Linear Technology, LT3574IMS#PBF Datasheet - Page 4

• 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

LT3574
typical perForMance characteristics

300
250
200
150
100
50
0
Switch Saturation Voltage
0
100
200
SWITCH CURRENT (mA)
125°C
300
1.18
1.28
1.24
1.22
1.26
1.20
400 500
–60
25°C
SHDN/UVLO Falling Threshold
–40
600 700 800
–20
–50°C
0
TEMPERATURE (°C)
3574 G04
20
900
40
60
80
1200
1000
400
800
600
200
100
0
–50
Switch Current Limit
120
3574 G07
–25
140
MAXIMUM CURRENT LIMIT
MINIMUM CURRENT LIMIT
0
TEMPERATURE (°C)
25
50
75
R
ILIM
12
10
8
6
4
0
2
100
–60
SS Pin Current
= 10k
T
3574 G05
A
–40
= 25°C, unless otherwise noted.
125
–20
0
TEMPERATURE (°C)
20
1.2
1.0
0.8
0.6
0.4
0.2
0
40
1
Switch Current Limit vs R
60
10
80
R
ILIM
100
20
RESISTANCE (k )
120
3574 G08
140
30
ILIM
40
3574 G06
3574f
50