NTE7109 PDF даташит
Спецификация NTE7109 изготовлена «NTE Electronics» и имеет функцию, называемую «Integrated Circuit Switching Regulator Control». |
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Детали детали
Номер произв | NTE7109 |
Описание | Integrated Circuit Switching Regulator Control |
Производители | NTE Electronics |
логотип |
5 Pages
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NTE7109
Integrated Circuit
Switching Regulator Control
Description:
The NTE7109 is a primary switching regulator controller in a 16–Lead DIP type package designed
to get the regulated DC voltage from an AC power supply. This device can directly drive a MOSFET
with fast rise and fall output pulses.
The NTE7109 contains not only a high frequency OSC and fast output drive, but also a current limiter
with fast response and high sensibility so a true “fast switching regulator” can be realized. By adding
additional compenents to the primary side, a timer–type protection circuit can be made for protection
against short–circuit and overcurrent.
Features:
D 500kHz Operation to MOSFET
• Output Current: ±2A
• Output Rise Time: 60ns; Fall Time: 40ns
• Modified Totem–Pole Output Method with Low Through Current
D Compact and Light–Weight Power Supply
• Low Start–Up Current: 90µA Typ.
• Wide Range Between “Start–Up Voltage” and “Stop Voltage” make the Power Input Smooting
Capacitor Low; Start–Up Threshold Voltage: 16V; Stop Voltage: 10V
• High Power Dissipation Package withstands the Heat Generated bt the Gate–Drive Current
of a MOSFET
D Simplified Peripheral Circuit with Protection Circuit and Built–In Large–Capacity Totem–Pole
Output
• High–Speed Current Limiting Circuit using Pulse–by–Pulse Method (Two Systems of
CLM+pin, CLM–pin)
• Protection by Intermittent Operation of Output Overcurrent: Timer Protection Circuit
• Overvoltage Protection Circuit with an Externally Resettable Latch (OVP)
• Protection Circuit for Output Miss Action at Low Supply Voltage (UVLO)
D High–Performance and Highly Functional Power Supply
• Triangular Wave Oscillator for Easy Dead Time Setting
Applications:
D Feed Forward Regulator
D Flyback Regulator
No Preview Available ! |
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31V
Collector Voltage, VC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31V
Output Current, IO
Peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2A
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5A
VF Terminal Voltage, VVF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC
ON/OFF Terminal Voltage, VON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC
CLM – Terminal Voltage, VCLM – . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –4.0 to +4.0V
CLM + Terminal Voltage, VCLM + . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to +4.0V
OVP Terminal Current, IOVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA
DET Terminal Voltage, VDET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
DET Terminal Input Current, IDET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
F/B Terminal Voltage, VF/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 10V
T–ON Terminal Input Current, ITON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1mA
T–OFF Terminal Input Current, ITOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –2mA
Power Dissipation (TA = +25°C), Pd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5W
Derate Above 25° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12mW/°C
Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +85°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Note 1. “+” sign shows the direction of current flow into the IC and “–” sigh shows the current flow
from the IC.
Note 2. This terminal has the constant voltage characteristic of 6V to 8V when current is supplied
from outside. The maximum allowable voltage is 6V when the constant voltage is applied
to this terminal. And maximum allowable current into this terminal is 5mA.
Note 3. The low impedance voltage supply should not be applied to the OVP terminal.
Recommended Operating Conditions:
Parameter
Symbol
Supply Voltage Range
Operating Frequency
VCC
fOSC
Oscillator Frequency Setting Resistance
T–ON Pin Resistance
T–OFF Pin Resistance
RON
ROFF
Test Conditions
Min Typ Max Unit
12 18 30 V
– – 500 kHz
10 – 75 kΩ
2 – 30 kΩ
Electrical Characteristics: (VCC = 18V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage Circuit Current
Operating Supply Voltage Range
Operation Start–Up Voltage
Operation Stop Voltage
Difference Between Operation
Start and Stop Voltage
VCC
VCC(START)
VCC(STOP)
∆VCC
∆VCC = VCC(START) – VCC(STOP)
VCC(STOP) –
15.2 16.2
9.0 9.9
5.0 6.3
30
17.2
10.9
7.6
V
V
V
V
Stand–By Current
ICCL VCC = 14.5V, TA = +25°C
VCC = 14.5V, –30° ≤ TA ≤ +85°C
50 90 140 µA
40 90 190 µA
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Electrical Characteristics (Cont’d): (VCC = 18V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage Circuit Current (Cont’d)
Operating Circuit Current
Circuit Current in OFF State
Circuit Current in Timer OFF State
Circuit Current in OVP State
ON/OFF
ICCO
ICC OFF
ICC CT
ICC OVP
VCC = 30V
VCC = 25V
VCC = 14V
VCC = 25V
VCC = 14V
VCC = 25V
VCC = 14V
10 15 21 mA
0.95 1.31 5.0 mA
50 90 140 µA
0.95 1.35 2.0 mA
– 160 240 µA
1.3 2.0 3.0 mA
126 200 310
High Threshold Voltage
Low Threshold Voltage
Hysterisis
F/B
VTHH ON/OFF
VTHL ON/OFF
∆VTH ON/OFF
2.1 2.6 3.1 V
1.9 2.4 2.9 V
0.1 0.2 0.3 V
Current at 0% Duty
Current at Maximum Duty
Current Difference Between Max
and 0% Duty
IFB MIND
IFB MAXD
∆IFB
F/B Terminal Input Current
F/B Terminal Input Current
∆IFB = IFB MIND – IFB MAXD
–2.1 –1.54 –1.0
–0.90 –0.55 –0.40
–1.35 –0.99 –0.70
mA
mA
mA
Terminal Voltage
Terminal Resistance
Detection
VFB F/B Terminal Input Current = 0.95mA 4.9 5.9 7.1 V
RFB 420 600 780 Ω
Detection Voltage
Input Current of Detection Amp
Voltage Gain of Detection Amp
OVP
VDET
IIN DET
GAV DET
VDET = 2.5V
2.4 2.5 2.6 V
– 1.0 3.0 µA
30 40 – dB
High Threshol Voltage
Hysterisis Voltage
Threshold Current
Input Current
Reset Supply Voltage
Difference Between Operation
Supply Voltage Stop and OVP
Reset
VTH OVPH
∆VTH OVP
ITH OVP
IIN OVP
VCC OVPC
VCC (STOP)
–VCC OVPC
∆VTH OVP = VTH OVPH – VTH OVPL
VOVP = 400mV
OVP Terminal is Open
(High Impedance)
540 750 960 mV
– 30 – mV
80 150 250 µA
80 150 250 µA
7.5 9.0 10.0 V
0.55 1.20 – V
Current From OVP Terminal for
OVP Reset
OVP
ITH OVPC
VCC = 30V
VCC = 18V
–480 –320 –213 µA
–210 –140 –93 µA
Threshold Voltage
Input Current
Reset Supply Voltage
Difference Between Operation
Supply Voltage Stop and OVP
Reset
VTH OVP
IIN OVP
VCC OVPC
VCC (STOP)
–VCC OVPC
1.00 1.40 1.90 V
– 1.2 3.6 µA
7.6 8.6 9.6 V
0.65 1.30 – V
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