LT3574IMS#PBF Linear Technology, LT3574IMS#PBF Datasheet - Page 6

• 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
block DiagraM

V
IN
R1
R2
R6
R4
C3
C5
TC
R
BIAS
SHDN/UVLO
SS
REF
CURRENT
TC
C1
Q4
1.22V
Q3
2.5µA
V
+
–
IN
I
20µA
A5
2
Q2
R
REGULATORS
FB
REFERENCE
INTERNAL
AND
1.23V
R3
FLYBACK
ERROR
–
+
AMP
g
m
I
7µA
1
R
ILIM
COMPARATOR
R5
CURRENT
–
+
A1
S
S
MASTER
OSCILLATOR
LATCH
SHOT
ONE
R
Q
DRIVER
120mV
A2
A4
BIAS
V1
–
+
+
–
V
L1A
IN
+
–
Q1
•
N:1
T1
R
0.036
SW
SENSE
•
L1B
D1
GND
3574 BD
V C
C2
V
V
OUT
OUT
R7
C4
+
–
3574f