SC1202A

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. 600mA Low Dropout Positive Voltage Regulator Features u u u u u u u u u 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. 90µA over temperature Adjustable or fixed output voltages Line regulation 0.2% max. Load regulation 0.4% max. SOT-223 package SC1202 & SC1202A Applications u Low voltage microcontrollers u Microprocessor I/O supplies u 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 8/30/2000 1 www.semtech.com SC1202 & SC1202A POWER MANAGEMENT Absolute Maximum Ratings Parameter Input Voltage S C 1202 S C 1202A Power D i ssi pati on Thermal Resi stance, Juncti on to C ase Thermal Resi stance, Juncti on to Ambi ent Operati ng Ambi ent Temperature Range Operati ng Juncti on Temperature Range Storage Temperature Range Lead Temperature (Solderi ng) 10 seconds ESD Rati ng (Human Body Model) Sy mbol VIN PD q JC q JA TA TJ TSTG TLEAD ESD Maximum 7 16 Internally Li mi ted 15 156 0 to 70 0 to 125 -65 to 150 300 2 U nits V W °C /W °C /W °C °C °C °C kV Electrical Characteristics Unless otherwise specified, Adj. VIN = 2.65 to 7V (15.0V for “A” version) and Adj. IO = 10mA to 600mA; Fixed VIN = 4.75 to 7V (15.0V for “A” version) and Fixed IO = 0mA to 600mA Parameter Output Voltage (1) Sy mbol VO VIN 5V Io 0mA TJ(4) 25°C O.T. Min 3.265 3.230 1.238 1.225 Ty p 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 U nits V Fi xed Voltage Opti on Reference Voltage (1) VREF 5V 10mA 25°C O.T. V Adj. Voltage Versi on Li ne Regulati on (1) Load Regulati on (1) D ropout Voltage DVOUT, DVREF = 1% C urrent Li mi t Qui escent C urrent Fi xed Voltage Versi on Temperature C oeffi ci ent Adjust Pi n C urrent Adjust Pi n C urrent C hange REG(LINE) REG(LOAD) VD ICL IQ TC IADJ DIADJ 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 µA µA ã 2000 Semtech Corp. 2 www.semtech.com SC1202 & SC1202A POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise specified, Adj. VIN = 2.65 to 7V (15.0V for “A” version) and Adj. IO = 10mA to 600mA; Fixed VIN = 4.75 to 7V (15.0V for “A” version) and Fixed IO = 0mA to 600mA Parameter Temperature Stabi li ty Mi ni mum Load C urrent Adj. Voltage Versi on RMS Output Noi se(2) Ri pple Rejecti on Rati o(3) Sy mbol TS IO(MIN) VN RA VIN Io TJ(4) O.T. Min Ty p 0.5 5 0.003 Max U nits % 5V O.T 25°C 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 = 25µF). (4) Over Temp. (O.T.) = over specified operating junction temperature range. ã 2000 Semtech Corp. 3 www.semtech.com SC1202 & SC1202A POWER MANAGEMENT Pin Configuration PIN 1 2 3 FUNC TION AD J/GND OUT IN Ordering Information D ev ice (1)(2) VOUT (V) 1.3 to 5.7 1.3 to 13.5 P ackag e SOT-223 SC 1202C ST-X.X.TR SC 1202AC ST-X.X.TR TAB IS OUTPUT 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. Pin Descriptions Pin N umber 1 Pin N ame AD J GND 2 3 OUT IN Pin Function Thi s pi n i s the negati ve si de of the reference voltage for the devi ce. Transi ent response can be i mproved by addi ng a small bypass capaci tor from the adjust pi n to ground. Thi s pi n i s the bottom end of the i nternal resi stor feedback chai n for fi xed output voltage parts, and should be connected to ground. Thi s i s the power output of the devi ce, and i s electri cally connected to the TAB. Thi s i s the i nput supply pi n for the devi ce. Block Diagram Marking Information z.zz: Voltage option (example: 2.85). Left blank for adjustable parts yyww: Datecode (example: 9812) xxxx: Semtech Lot # (example: 80101) ã 2000 Semtech Corp. 4 www.semtech.com SC1202 & SC1202A POWER MANAGEMENT Outline Drawing - SOT-223 Land Pattern - SOT-223 Contact Information Semtech Corporation Power Management Products Division 652 Mitchell Rd., Newbury Park, CA 91320 Phone: (805)498-2111 FAX (805)498-3804 ã 2000 Semtech Corp. 5 www.semtech.com