Transcription of NTE956 Integrated Circuit 3–Terminal Adjustable Positive ...
1 NTE956 Integrated Circuit3 terminal Adjustable PositiveVoltage RegulatorDescription:The NTE956 is an Adjustable 3 terminal Positive voltage regulator in a TO220 type package capableof supplying in excess of over a to 37V output range. This device is exceptionally easy touse and both line and load regulation are better than standard fixed addition to higher performance than fixed regulators , the NTE956 offers full overload protectionavailable only in IC s. Included on the chip are current limit, thermal overload protection and safe areaprotection.
2 All overload protection circuitry remains fully functional even if the adjustment terminalis , no capacitors are needed unless the device is situated far from the input filter capacitorsin which case an input bypass is needed. An optional output capacitor can be added to improve tran-sient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratioswhich are difficult to achieve with standard 3 terminal replacing fixed regulators , the NTE956 is useful in a wide variety of other applications.
3 Sincethe regulator is floating and sees only the input to output differential voltage , supplies of severalhundred volts can be regulated as long as the maximum input to output differential is not , it makes an especially simple Adjustable switching regulator, a programmable output regulator,or by connecting a fixed resistor between the adjustment and output, the NTE956 can be used as aprecision current regulator. Supplies with electronic shutdown can be achieved by clamping the ad-justment terminal to GND which programs the output to where most loads draw little :DAdjustable Output Down to Output CurrentDLine Regulation Typically Regulation Typically Limit Constant with TemperatureD100% Electrical Burn InDEliminates the Need to Stock Many VoltagesD80dB Ripple RejectionAbsolute Maximum Ratings:Power Dissipation, PDInternally Limited.
4 Input Output voltage Differential, VI VO40V.. Operating Junction Temperature Range, TJ0 to +125 C.. Storage Temperature Range, Tstg 65 to +150 C.. Typical Thermal Resistance, Junction to Case, RthJC4 C/W.. Lead Temperature (During Soldering, 10sec), TL+300 C.. Electrical Characteristics:(0 TJ +125 C, VIN VOUT = 5V, IO = 500mA, IMAX = , Note 1unless otherwise specified)ParameterSymbolTest ConditionsMinTypMaxUnitLine RegulationReglineTA = +25 C, 3V (VIN VOUT) 40V, Note 2 (VIN VOUT) 40V RegulationRegloadTA = +25 C, VOUT 5V 525mV10mA IO 1 MAX,Note 2 VOUT 5V IO 1 MAX, Note 2 VOUT 5V 2070mVVOUT 5V RegulationTA = +25 C, 20ms Pulse Pin CurrentIAdj 50100 AAdjustment Pin CurrentChange IAdj10mA IL IMAX, (VIN VOUT)
5 40V AReference VoltageVref3V (VIN VOUT) 40V, 10mA IO 1 MAX,P StabilityTS0 TJ +125 C 1 %Minimum Load CurrentILmin(VIN VOUT) 40V Output CurrentImaxVIN VOUT ALimitVIN VOUT = 40V ARMS Output Noise,% of VOUTNTA = +25 C, 10Hz f 10kHz %Ripple Rejection RatioRRVOUT = 10V, f = 120Hz 65 dBCADJ = 10 F6680 dBLong Term StabilitySTA = +125 C, 1000 Hours 1. Although power dissipation is internally limited, these specifications are applicable for powerdissipations of 2. Regulation is measured at constant junction temperature, using pulse testing with a low dutycycle.
6 Changes in output voltage due to heating effects are covered under the specificationfor thermal ( ) ( ) ( ) ( ) ( )Dia ( ) ( ) ( )
