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Supply Controller. NTE7117 Datasheet

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Supply Controller. NTE7117 Datasheet
















NTE7117 Controller. Datasheet pdf. Equivalent













Part

NTE7117

Description

Integrated Circuit Switched-Mode Power Supply Controller



Feature


NTE7117 Integrated Circuit Switched–Mo de Power Supply Controller Description: The NTE7117 is a control circuit in an 8–Lead DIP type package designed for use in switched–mode power supplies. It contains an internal temperature– compensated supply, PWM, sawtooth oscil lator, over–current sense latch, and output stage. This device is intended f or low cost SMPS application.
Manufacture

NTE Electronics

Datasheet
Download NTE7117 Datasheet


NTE Electronics NTE7117

NTE7117; s where extensive housekeeping functions are not required. Features: D Pulse Wi dth Modulator D Current Limiting (Cycle –by–Cycle) D Sawtooth Generator D S tabilized Power Supply D Double–Pulse Protection D Internal Temperature–Co mpensated Reference Applications: D Swi tch–Mode Power Supplies D DC Motor Co ntroller Inverter D DC/DC Converter Abs olute Maximum Ratings: Suppl.


NTE Electronics NTE7117

y Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Output Cur rent, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA Output Duty Cycl e . . . . . . . . . . . . . . . . . . . . . . . . . . . ..


NTE Electronics NTE7117

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98% Maximum Total Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW Operating Temperature Ra nge, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C DC El ectrical Characteris.





Part

NTE7117

Description

Integrated Circuit Switched-Mode Power Supply Controller



Feature


NTE7117 Integrated Circuit Switched–Mo de Power Supply Controller Description: The NTE7117 is a control circuit in an 8–Lead DIP type package designed for use in switched–mode power supplies. It contains an internal temperature– compensated supply, PWM, sawtooth oscil lator, over–current sense latch, and output stage. This device is intended f or low cost SMPS application.
Manufacture

NTE Electronics

Datasheet
Download NTE7117 Datasheet




 NTE7117
NTE7117
Integrated Circuit
Switched–Mode Power Supply Controller
Description:
The NTE7117 is a control circuit in an 8–Lead DIP type package designed for use in switched–mode
power supplies. It contains an internal temperature–compensated supply, PWM, sawtooth oscillator,
over–current sense latch, and output stage. This device is intended for low cost SMPS applications
where extensive housekeeping functions are not required.
Features:
D Pulse Width Modulator
D Current Limiting (Cycle–by–Cycle)
D Sawtooth Generator
D Stabilized Power Supply
D Double–Pulse Protection
D Internal Temperature–Compensated Reference
Applications:
D Switch–Mode Power Supplies
D DC Motor Controller Inverter
D DC/DC Converter
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Output Current, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
Output Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98%
Maximum Total Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW
Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
DC Electrical Characteristics: (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Reference Section
Internal Reference Voltage
Internal Zener Reference
Temperature Coefficient of VREF
Temperature Coefficient of VZ
Oscillator Section
VREF
VZ
TA = +25°C
TA = 0° to +70°C
IL = 7mA
3.69 3.75 3.84 V
3.66 – 3.87 V
7.8 8.2 8.8
V
±100 – ppm/°C
±100 – ppm/°C
Frequency Range
Initial Accuracy
Duty Cycle Range
f TA = 0° to +70°C
RT and CT Constant
fo = 20kHz
50 – 100k Hz
–5–
%
0 – 98 %




 NTE7117
DC Electrical Characteristics (Contd): (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Current Limiting
Input Current
Single Pulse Inhibit Delay
Current Limit Trip Level
IIN Pin6 = 250mV
TA = +25°C
– –2 10 µA
TA = 0° to +70°C
– –20 µA
Inhibit Delay Time IOUT = 20mA
for 20% Overdrive IOUT = 40mA
0.88 1.10
0.7 0.8
µs
µs
0.4 0.5 0.6
V
Error Amplifier
OpenLoop Gain
60
dB
Feedback Resistor
10k
SmallSignal Bandwidth
BW
3 MHz
Output Voltage Swing, High
Output Voltage Swing, Low
Output Stage
VOH
VOL
6.2
– – 0.7
V
V
Output Current
Saturation Voltage
Supply Voltage/Current
IOUT
VCE
TA = 0° to +70°C
TA = 0° to +70°C
IC = 20mA
IC = 40mA
20 – – mA
– – 0.4 V
– – 0.5 V
Supply Current
Supply Voltage
Low Supply Protection
ICC IZ = 0,
VoltageFed
TA = +25°C
TA = 0° to +70°C
10
13
VCC IS = 10mA, CurrentFed
19 21 24
ICC = 30mA, CurrentFed
20 30
mA
mA
V
V
Pin1 Threshold
8.0 9.0 10.5 V
Pin Connection Diagram
VCC 1
VZ 2
Feedback 3
Gain 4
8 GND
7 Output
6 Current Sense
5 RT, CT
85
.256 (6.52) Max
14
.393 (10.0)
Max
.150
(3.81)
.300
(7.62)
.100
(2.54)
.300 (7.62)
.070 (1.77) Min








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