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CS8271 Dataheets PDF



Part Number CS8271
Manufacturers Cherry Semiconductor Corporation
Logo Cherry Semiconductor Corporation
Description Adjustable Micropower Low Dropout Linear Regulator with ENABLE
Datasheet CS8271 DatasheetCS8271 Datasheet (PDF)

CS8271 CS8271 Adjustable Micropower Low Dropout Linear Regulator with ENABLE Description The CS8271 is an adjustable micropower voltage regulator with very low quiescent current (60µA typical at 100µA load). The output supplies 100mA of load current with a maximum dropout voltage of only 600mV. Control logic includes ENABLE . The combination of low quiescent current, outstanding regulator performance and control logic makes the CS8271 ideal for any battery operated equipment. The logic level co.

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CS8271 CS8271 Adjustable Micropower Low Dropout Linear Regulator with ENABLE Description The CS8271 is an adjustable micropower voltage regulator with very low quiescent current (60µA typical at 100µA load). The output supplies 100mA of load current with a maximum dropout voltage of only 600mV. Control logic includes ENABLE . The combination of low quiescent current, outstanding regulator performance and control logic makes the CS8271 ideal for any battery operated equipment. The logic level compatible ENABLE pin allows the user to put the regulator into a shutdown mode where it draws only 50µA of quiescent current. The regulator is protected against reverse battery, short circuit, over voltage, and over temperature conditions. The device can withstand 60V load dump transients making it suitable for use in automotive environments. The CS8271 is pin compatible with the National Semiconductor LM2931. Features s Low Quiescent Current s Adjustable Output: 5V to 12V s ENABLE for Sleep Mode Control s 100mA Output Current Capability s Fault Protection +60V Load Dump -15V Reverse Voltage Short Circuit Thermal Shutdown s Low Reverse Current (Output to Input) Block Diagram VIN Current Source (Circuit Bias) Over Voltage Shutdown VOUT Package Options 8L SOIC & PDIP Current Limit Sense ENABLE Input VOUT Adj 1 VIN NC NC ENABLE Gnd NC + Thermal Shutdown - Error Amplifier Adj Bandgap Reference Gnd Other Packages: Consult factory for 16L SO Batwing, 5L TO-220 and D2PAK. Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: [email protected] Web Site: www.cherry-semi.com Rev. 3/26/97 1 A ¨ Company CS8271 Absolute Maximum Ratings Power Dissipation.............................................................................................................................................Internally Limited Transient Input Voltage ..................................................................................................................................................-50V, 60V Reverse Battery..........................................................................................................................................................................-15V Output Current .................................................................................................................................................Internally Limited ESD Susceptibility (Human Body Model)..............................................................................................................................2kV Junction Temperature .............................................................................................................................................-40¡C to 150¡C Storage Temperature...............................................................................................................................................-55¡C to 150¡C Lead Temperature Soldering Wave Solder (through hole styles only) .....................................................................................10 sec. max, 260¡C peak Reflow (SMD styles only) ......................................................................................60 sec. max above 183¡C, 230¡C peak Adj and Enable Output ..................................................................................................................................................-0.3V, 10V ...........................................................................................................................................................................-0.3V, 20V VOUT Electrical Characteristics: VOUT + 1V ² VIN ² 30V, 5V ² VOUT ² 12V, IOUT = 10mA, -40¡ ² TA ² 125¡, -40¡ ² TJ ² 150¡, VENABLE = 0V; unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT s Output Voltage Dropout Voltage Load Regulation IOUT = 100µA, VDROP = (VIN Ð VOUT) IOUT = 100mA, VDROP = (VIN Ð VOUT) Measure VOUT when IOUT = 100µA, 100mA. LDREG = ABS (ÆVOUT) IOUT = 1mA. Measure VOUT when VIN = VOUT + 1V, 30V. LNREG = ABS (ÆVOUT) VIN = 6V, IOUT = 100µA, VOUT setup for 5V. IQ = IVIN - IOUT VIN = 13V, IOUT = 100µA, VOUT setup for 12V. IQ = IVIN - 100µA VIN = 30V, IOUT = 100µA, VOUT setup for 5V, IQ = IVIN - 100µA VIN = 30V, IOUT = 100µA, VOUT setup for 12V, IQ = IVIN - 100µA IOUT = 50mA, IQ = IVIN - 50mA IOUT = 100mA, IQ = IVIN - 100mA Quiescent Current, (IQ) Sleep Mode VIN = 6V, ENABLE = 2.5V, IQSLEEP = IVIN VIN = 30V, ENABLE = 2.5V, IQSLEEP = IVIN Ripple Rejection Current Limit Short Circuit Output Current Thermal Limit Overvoltage Shutdown Reverse Current f=120Hz, (Note 1) VOUT = VOUT - 500mV, ILIM = IVOUT VOUT=0V, ISHRT = IVOUT (Note 1) Adjust VIN from 28V to 40V until VOUT ² 1V VIN=0V, IREV = IVOUT, VOUT = 13.2V 60 105 15 150 30 100 400 0.1 150 600 1.0 mV mV %VOUT Line Regulation 0.1 0.5 %VOUT Quiescent Current, (IQ) Active Mode 55 130 150 200 4 12 20 75 75 200 100 180 34 100 .


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