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| 600mA Low Dropout Positive Voltage Regulator POWER MANAGEMENT Description The SC1202 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance at full rated current. Additionally, the SC1202 series provides excellent regulation over variations due to line, load and temperature. Outstanding features include low dropout performance at rated current, fast transient response, internal current limiting and thermal shutdown protection of the output device. The SC1202 series are three terminal regulators available in the surface mount SOT-223 package. SC1202 Features Low dropout performance, 1.3V max. Full current rating over line and temperature Fast transient response 2% total output regulation over line, load and temperature Adjust pin current max. 90A over temperature Adjustable or fixed output voltages Line regulation 0.2% max. Load regulation 0.4% max. SOT-223 package Applications Low voltage microcontrollers Microprocessor I/O supplies 5V to 3.3V conversion for memory, ASIC, custom circuits, etc. Typical Application Circuits Fixed Voltage Regulator U1 VIN > 4.75V 3 IN SC1202-3.3 2 TAB OUT VOUT = 3.3V + C1 10uF Tant. + GND 1 C2 10uF Tant. Adjustable Voltage Regulator U1 VIN > 4.75V 3 IN TAB SC1202 OUT 2 VOUT = 3.45V + C1 10uF Tant. ADJ 1 R1 133 Ohm, 1% + C2 10uF Tant. R2 232 Ohm, 1% R2 VOUT = VREF * 1 + + I ADJ * R 2 R1 Notes: (1) C1 needed if device is far from filter capacitors (2) C2 minimum value required for stability Revision: October 5, 2004 1 www.semtech.com SC1202 POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Parameter Input Voltage Power Dissipation Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient Operating Ambient Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 10 seconds ESD Rating (Human Body Model) Symbol VIN PD J C J A TA TJ TSTG TLEAD ESD Maximum 7 Internally Limited 15 156 0 to 70 0 to 125 -65 to 150 300 2 Units V W C/W C/W C C C C kV Electrical Characteristics Unless otherwise specified, Adj. VIN = 2.65 to 7V and Adj. IO = 10mA to 600mA; Fixed VIN = 4.75 to 7V and Fixed IO = 0mA to 600mA Parameter Output Voltage (1) Symbol VO VIN 5V Io 0mA TJ(4) 25C O.T. Min 3.265 3.230 1.238 1.225 Typ 3.300 3.300 1.250 1.250 0.035 0.2 1.2 Max 3.335 3.369 1.262 1.275 0.2 0.4 1.3 Units V Fixed Voltage Option Reference Voltage (1) VREF 5V 10mA 25C O.T. V Adj. Voltage Version Line Regulation (1) Load Regulation (1) Dropout Voltage VOUT, VREF = 1% Current Limit Quiescent Current Fixed Voltage Version Temperature Coefficient Adjust Pin Current Adjust Pin Current Change REG(LINE) REG(LOAD) VD ICL IQ TC IADJ IADJ 5V 5V 10mA O.T. O.T. O.T. O.T. O.T. O.T. O.T. O.T. 600 % % V mA 10 0.005 55 0.2 13 mA %/C 90 5.0 A A 2004 Semtech Corp. 2 www.semtech.com SC1202 POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise specified, Adj. VIN = 2.65 to 7V and Adj. IO = 10mA to 600mA; Fixed VIN = 4.75 to 7V and Fixed IO = 0mA to 600mA Parameter Temperature Stability Minimum Load Current Adj. Voltage Version RMS Output Noise(2) Ripple Rejection Ratio(3) Symbol TS IO(MIN) VN RA VIN Io TJ(4) O.T. Min Typ 0.5 5 0.003 Max Units % 5V O.T 25C 10 mA %VO dB 5V 600mA O.T. 60 72 NOTES: (1) Low duty cycle pulse testing with Kelvin connections required. (2) Bandwidth of 10 Hz to 10 kHz. (3) 120 Hz input ripple, (CADJ for ADJ = 25F). (4) Over Temp. (O.T.) = over specified operating junction temperature range. 2004 Semtech Corp. 3 www.semtech.com SC1202 POWER MANAGEMENT Pin Configuration PIN 1 2 3 FUNCTION ADJ/GND OUT IN Ordering Information Device (1)(2) VOUT (V) 1.3 to 5.7 P ackag e SOT-223 SC1202CST-X.X.TR SC1202CST3.3TRT(3) TAB IS OUTPUT Pin Descriptions Pin Number 1 Pin Name AD J GND 2 3 OUT IN Pin Function Notes: (1) Where X.X denotes voltage options. Available voltages are: 3.3V. Leave blank for adjustable version (see VOUT). Contact factory for additional voltage options. (2) Only available in tape and reel packaging. A reel contains 2500 devices. (3) Lead free product. This product is fully WEEE and RoHS compliant. This pin is the negative side of the reference voltage for the device. Transient response can be improved by adding a small bypass capacitor from the adjust pin to ground. This pin is the bottom end of the internal resistor feedback chain for fixed output voltage parts, and should be connected to ground. This is the power output of the device, and is electrically connected to the TAB. This is the input supply pin for the device. Block Diagram Marking Information 3.3V Voltage option (example: 3.3V). Left blank for adjustable parts yyww: Datecode (example: 9812) xxxx: Semtech Lot # (example: 80101) z.zz: 2004 Semtech Corp. 4 www.semtech.com SC1202 POWER MANAGEMENT Outline Drawing - SOT-223 Land Pattern - SOT-223 Contact Information Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp. 5 www.semtech.com |
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