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MAX5014 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part No. MAX5014
Description  Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power Supplies
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
Logo MAXIM - Maxim Integrated Products

MAX5014 Datasheet(HTML) 3 Page - Maxim Integrated Products

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Current-Mode PWM Controllers with Integrated
Startup Circuit for Isolated Power Supplies
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 13V, a 10µF capacitor connects VCC to GND, VCS = 0, V+ = 48V, 0.1µF capacitor connected to SS_SHDN, NDRV = open cir-
cuit, OPTO = GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
THERMAL SHUTDOWN
Thermal Shutdown Temperature
150
°C
Thermal Hysteresis
25
°C
CURRENT LIMIT
CS Threshold Voltage
VILIM
VOPTO = 4V
419
465
510
mV
CS Input Bias Current
0
≤ VCS ≤ 2V, VOPTO = 4V
-1
1
µA
Current Limit Comparator
Propagation Delay
25mV overdrive on CS, VOPTO = 4V
180
ns
CS Blanking Time
VOPTO = 4V
70
ns
OSCILLATOR
Clock Frequency Range
VOPTO = 4V
247
275
302
kHz
MAX5014, VOPTO = 4V
75
85
Max Duty Cycle
MAX5015, VOPTO = 4V
44
50
%
SOFT-START
SS Source Current
ISSO
VSS_SHDN = 0
2.0
4.6
6.5
µA
SS Sink Current
1.0
mA
Peak Soft-Start Voltage Clamp
No external load
2.331
2.420
2.500
V
VSS_SHDN falling
0.25
0.37
0.41
Shutdown Threshold
VSS_SHDN rising
0.53
0.59
0.65
V
Typical Operating Characteristics
(V+ = 48V, VDD = 13V, NRDV is open circuit, TA = +25°C, unless otherwise noted.)
0.999
1.000
1.001
1.002
1.003
-40
0
-20
20
40
60
80
VSS_SHDN vs. TEMPERATURE
(AT THE END OF SOFT-START)
TEMPERATURE (
°C)
OPTO = CS = GND
273
274
276
275
277
278
-40
0
-20
20
40
60
80
NDRV FREQUENCY vs.
TEMPERATURE
TEMPERATURE (
°C)
VOPTO = 4V, CS = GND
80.4
80.6
80.5
80.8
80.7
80.9
81.0
-40
20
40
-20
0
60
80
MAX5014 MAXIMUM DUTY CYCLE
vs. TEMPERATURE
TEMPERATURE (
°C)
VOPTO = 4V, CS = GND


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