NTE1635 IC Speaker Protector Voltage Temperature Overload

Formerly: ECG1635

NTE1635
Integrated Circuit Speaker Protector/Voltage/Temperature/Overload

Description:
The NTE1635 is a monolithic integrated circuit in an 8-Lead SIP type package designed for use in protecting power amplifiers and speakers in various amplifier and receiver applications.

Features:
- Built-In Relay Driver
- Single Power Source
- Wide Operating Supply Range: 25V to 60V
- Plus and Minus Voltage using One Pin (Both Pin3 and Pin4 Posses the Same Functions and Detect Plus and Minus Voltage)
- AC Voltage Detector (Pin5)
- Circuit Protection by Plus Voltage Detection is Provided by Connecting D1 Diode Externally (Pin6)
- Relay-On Lag Time Adjustable by External Applications
- Short Relay-Off Time (25ms Typ Under the Standard External Applications)

Typical Applications:
- For Speaker Protection, use Pin3 (or Pin4) to Detect Setoff of Quiescent Output DC Voltage and to Turn the Relay Off
- For Power Amplifier Protection, use Pin3 (or Pin4) with an External Thermo-Sensitive Device to Detect the Temperature Increase and to Turn the Relay Off
- Power Amplifier can be Protected by Detecting Overload and Turning the Relay Off with Pin6
- In case of Overload Detection by Constant-Current or by Constant-Voltage Drive using an External Diode D1, the Latch Mechanism keeps the Relay On until the Power is Switched Off
- For Prevention of Pop Noise at Power Off use Pin5. AC Voltage Disappeance is Immediately Detected when the Amp´s Switch has been Off. This Minimizes the Relay-Off Time and thus can Prevent Pop Noise Generated by Mute-Off Time Lag

Info as pdf-file
NTE-ECG replacement list as pdf-file
NTE-ECG diagrams

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Total Power Disipation (TA = +70°C), PT...........................................400mW
Operating Temperature Range, Topr.........................................-20° to +70°C
Storage Temperature Range, Tstg.......................................... -55° to +125°C
Supply Voltage (Pin1), VCC(max)...................................................... 60V
Supply Current (Pin1), I1(max)...................................................... 80mA
Supply Current (Pin3, Note 1), I3(max)...............................................±3mA
Supply Current (Pin4, Note 1), I4(max)...............................................±3mA
Supply Voltage (Pin5), V5(max)...................................................... -10V
Supply Current (Pin6), I6(max).......................................................3mA
Supply Voltage (Pin7, Note 2), V7(max).................................................8V
Supply Current (Pin7, Note 2), I7(max)...............................................25mA
Supply Voltage (Pin8), V8(max).............................................Less than Pin7
Supply Current (Peak, Pin8), I8(max)................................................ 50mA

Note 1. Positive current denotes input current at Pin3 and Pin4, Negative current denotes output current
Note 2. V7(max) = 8V is derived when driven by a constant voltage source without any resistance. When applying current to V7 throught a resistance VCC the maximum value of input current to Pin7 should be used instead of the above values.


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Anmerkung zu den NTE/ECG Austauschhalbleiter:
NTE-Austauschhalbleiter (früher ECG Philips und Sylvania) sind sorgfältig ausgesuchte und erprobte Halbleiter, die einen sicheren Ersatz für Originaltypen verschiedenster Hersteller und Ursprünge für fast alle Applikationsbereiche im Wartungsdienst bieten.
Alle NTE-Austausch-Halbleiter sind einzeln in durchsichtigen Plastikbeuteln verpackt, auf welchen die wichtigsten Daten vermerkt sind.