lt1737is-trpbf Linear Technology Corporation, lt1737is-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt1737is-trpbf
• Description: High Power Isolated Flyback Controller
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: Component value range guaranteed by design.
temperature range, otherwise specifications are at T
SYMBOL
Current Amplifier
V
V
Timing
f
C
t
t
t
R
Load Compensation
UVLO Function
V
I
3V Output Function
V
ON
ED
EN
UVLO
C
ISENSE
OSCAP
UVLO
REF
t
PARAMETER
Control Pin Threshold
Switch Current Limit
∆V
Switching Frequency
Oscillator Capacitor Value
Minimum Switch On Time
Flyback Enable Delay Time
Minimum Flyback Enable Time
Timing Resistor Value
Maximum Switch Duty Cycle
Sense Offset Voltage
Current Gain Factor
UVLO Pin Lockout Threshold
UVLO Pin Shutdown Threshold
UVLO Pin Bias Current
Reference Output Voltage
Output Impedance
Current Limit
ISENSE
/∆V
C
A
= 25°C. V
CONDITIONS
Duty Cycle = Min
Duty Cycle ≤ 30%
Duty Cycle ≤ 30%
Duty Cycle = 80%
C
(Note 2)
R
R
R
(Note 2)
V
V
I
LOAD
OSCAP
UVLO
UVLO
tON
ENDLY
MENAB
The
= 50k
= 1mA
= 1.2V
= 1.3V
●
= 100pF
= 50k
= 50k
CC
denotes specifications which apply over the full operating
= 14V, GATE open, V
C
= 1.4V unless otherwise noted.
●
●
●
●
●
●
●
●
– 0.25
– 4.50
0.90
0.80
0.80
1.21
MIN
220
200
0.4
2.8
90
80
33
24
85
8
+ 0.1
– 3.5
1.12
0.30
0.95
1.25
0.75
TYP
250
220
100
200
200
200
3.0
90
10
15
2
+ 0.25
– 2.50
MAX
1.25
1.35
1.05
1.29
0.95
LT1737
270
280
115
125
200
240
3.2
5
UNITS
1737fa
3
kHz
kHz
mV
mV
mV
mV
mV
mV
mA
kΩ
µA
µA
pF
ns
ns
ns
%
Ω
V
V
V
V
V
V