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| Datasheet File OCR Text: |
| NTE7044 Integrated Circuit Switching Regulator Control Circuit Description: The NTE7044 is an integrated circuit in a 9-Lead SIP type package which contains a PWM switching regulator control circuit and protect circuit on a single chip. Features: D Soft Start Circuit D 0 to 0.7 Duty D Protection Circuit for Overvoltage and Current D External Trigger Available D High Supply Voltage Protection D Low Supply Voltage Protection D Reference Voltage Provided by an External Zener Diode Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Circuit Voltage V6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to 14.4V V1, V2, V4-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V6-5 V3-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 10V V7-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to 8V V8, V9-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3V to +4V Supply Current, I6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18mA Circuit Current, I4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1mA to +50mApeak Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260mW Local Power Dissipation (Q1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +75C Storage Temperatuere Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Note 1. + is flow-in current to the circuit, while - is flow-out current. Electrical Characteristics: (TA = +25C, VCC = 12V unless otherwise specified) Parameter Total Circuit Current Oscillation Frequency Output Pulse Duty (Min) Output Pulse Duty (Max) Symbol Itot fOSC tw(duty) tw(duty) Test Conditions Min 8.4 14.0 67 - Typ 10.5 14.8 72 0 Max 12.6 15.6 77 0 Unit mA kHz % % Electrical Characteristics (Cont'd): (TA = +25C, VCC = 12V unless otherwise specified) Parameter Output Saturation Voltage Symbol VO(sat) VHVP VLVP Vt1 Vt2 Test Conditions I4 = 10mA I4 = 50mA High Supply Voltage Protection Low Supply Voltage Protection Input Voltage, External Trigger Start Input Voltage, One-Shot Multi Start Min - - 13.2 4.8 0.66 0.68 Typ 0.10 0.62 13.9 5.2 0.71 0.73 Max 0.30 1.00 14.6 5.6 0.76 0.78 Unit V V V V V V Pin Connection Diagram (Front View) 9 Protector 8 Trigger 7 Soft Start 6 VCC 5 GND 4 Output 3 Oscillator 2 Feedback 1 Reference Voltage .929 (23.6) .118 (3.0) .236 (6.0) 1 9 .098 (2.5) .100 (2.54) .118(3.0) |
Price & Availability of NTE7044
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