CAT6220 300 mA Adjustable Voltage LDO Regulator Description The CAT6220 is a 300 mA CMOS low dropout regulator whose output voltage is user adjustable that provides fast response time during load current and line voltage changes. With 1 mA of shutdown current, an internal no−load operating current of only 10 mA, and full−load operating current of 40 mA, the CAT6220 is ideal for battery−operated devices with supply voltages from 2.3 V to 6.5 V. The CAT6220 offers 1% initial accuracy and low dropout voltage, 270 mV typical at 300 mA. Stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost. Other features include current limit and thermal protection. The device is available in the low profile (1 mm max height) 5−lead TSOT−23 and 6−pad 2 mm x 2 mm TDFN packages. http://onsemi.com 5 1 TSOT−23 TD SUFFIX CASE 419AE 1 TDFN−6 VP5 SUFFIX CASE 511AH Features • • • • • • • • • • • Guaranteed 300 mA Output Current Low Dropout Voltage of 270 mV at 300 mA Stable with Ceramic Output Capacitor No−load Ground Current of 10 mA Typical Full−load Ground Current of 40 mA Typical ±1.0% Output Voltage Initial Accuracy ±2.0% Accuracy over Temperature “Zero” Current Shutdown Mode Current Limit and Thermal Protection 5−lead TSOT−23 and 6−pad TDFN Packages These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Applications • • • • 2.3 V to 6.5 V 1 mF VIN 1 VOUT GND ADJ EN TSOT−23 EN GND 1 ADJ TAB NC VOUT VIN TDFN−6 (Top Views) Toys Consumer Electronics Cellular Phones Battery−powered Devices VIN PIN CONNECTIONS VIN ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. VOUT CAT6220 VOUT R1 ADJ 1 mF R2 OFF ON EN GND Figure 1. Typical Application Circuit © Semiconductor Components Industries, LLC, 2011 December, 2011 − Rev. 1 1 Publication Order Number: CAT6220/D CAT6220 Table 1. PIN DESCRIPTIONS Package Pin # Pin Name TSOT TDFN VIN 1 3 Supply voltage input. GND 2 2 Ground reference. All GND pins must be grounded. Function EN 3 1 Enable input (active high) ADJ 4 6 Digital programming input NIC −− 5 No Internal Connection. A voltage or signal applied to this pin will have no effect upon device operation. Output Voltage Adjustment. VOUT 5 4 GND −− PAD Center pad or tab; for heat sinking Pin Function A small 1 mF ceramic bypass capacitor is required between the VOUT pin and ground. For better transient response, its value can be increased to 2.2 mF. This capacitor should be located near the device. GND is the ground reference for the LDO. This pin must be connected to the system ground line or the ground plane of the PCB. The backside center pad of the TDFN package is internally connected to the GND pin. Any PCB connection to this pad must be either floating or at GND potential. ADJ is the LDO’s voltage control input. This pin is connected to the center of the resistor voltage divider R1, R2. A 10 pF capacitor connected in parallel with R1 will improve the transient load regulation for VOUT ≤ 2 V. VIN is the supply pin for the LDO. A small 1 mF ceramic bypass capacitor is required between the VIN pin and ground near the device. When using longer connections to the power supply, CIN value can be increased without limit. The operating input voltage range is from 2.3 V to 6.5 V. EN is the enable control logic (active high) for the regulator output. Enable is a high impedance input and must not be left unconnected. Floating EN will result in unpredictable action at VOUT. VOUT is the LDO regulator’s output. Output voltage is set by two external resistors arranged as a voltage divider between VOUT and Ground. The center point of the divider is connected to ADJ as shown in Figure 2. The minimum recommended current through resistors is 5 mA. The ratio of the resistors is set by the formula: ǒ Thermal and Short Circuit Protection CAT6220 is equipped with thermal protection and over−current limiting circuitry. In the event of a short circuit CAT6220 will limit its output current to approximately 400 mA. If the short circuit persists CAT6220’s internal temperature will rise and if the chip’s temperature reaches 140°C CAT6220 will shut off all current to the load which protects the system and allows the LDO to cool down. When the LDO’s internal temperature drops below 130°C the LDO automatically turns ON again. If the short circuit is still present another thermal cycle will ensue. This will continue until either the short circuit is removed or the Enable pin is taken LOW. For the TSOT23−5 package, a continuous 300 mA output current may turn−on the thermal protection. If this happens the LDO will respond by shutting off power to the load and thermal cycling will begin. Ǔ R V OUT + 1.24 V 1 ) 1 R2 VIN VOUT VOUT CAT6220 R1 ADJ 1 mF R2 EN GND Figure 2. R1 and R2 Set CAT6220’s Output Voltage http://onsemi.com 2 CAT6220 Table 2. ABSOLUTE MAXIMUM RATINGS Parameter VIN VEN, VOUT Junction Temperature, TJ Power Dissipation, PD Storage Temperature Range, TS Lead Temperature (soldering, 5 sec.) ESD Rating (Human Body Model) ESD Rating (Machine Model) Rating Unit 0 to 7 V −0.3 to VIN + 0.3 V +150 _C Internally Limited (Note 1) mW −65 to +150 _C 260 _C 2 kV 200 V Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax – TA) / θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. Table 3. RECOMMENDED OPERATING CONDITIONS (Note 2) Range Unit VIN 2.3 to 6.5 V IOUT 0.005 to 300 mA VEN 0 to VIN V Parameter Junction Temperature Range, TJ −40 to +140 _C Package Thermal Resistance (TSOT23−5), θJA 280 _C/W Package Thermal Resistance (TDFN−6), θJA 160 _C/W 2. The device is not guaranteed to work outside its operating rating. http://onsemi.com 3 CAT6220 Table 4. ELECTRICAL OPERATING CHARACTERISTICS (Note 3) (VIN = VOUT + 1.0 V, VEN = High, IOUT = 100 mA, CIN = 1 mF, COUT = 1 mF, ambient temperature of 25°C (over recommended operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.) Symbol Parameter Conditions VADJ Adjustable Voltage IOUT = 100 mA VADJ Adjustable Voltage Accuracy Initial accuracy IADJ Min Typ Max Unit −1.5 +1.5 % −2.5 +2.5 1.24 ADJ pin Input Current 1 TCOUT Output Voltage Temp. Coefficient 40 VR−LINE Line Regulation VR−LOAD Load Regulation VIN = VOUT + 1.0 V to 6.5 V −0.2 ±0.1 −0.35 IOUT = 100 mA to 300 mA V 50 nA ppm/°C +0.2 %/V +0.35 0.9 1.5 % 2.2 VDROP Dropout Voltage (Note 4) IOUT = 300 mA 270 350 mV 500 IGND Ground Current IOUT = 5 mA 10 15 mA 20 IOUT = 300 mA IGND−SD Shutdown Ground Current 40 VEN < 0.4 V 100 1 mA 2 PSRR Power Supply Rejection Ratio ISC Output short circuit current limit TON Turn−On Time eN ROUT−SH ESR Output Noise Voltage f = 100 Hz 62 f = 1 kHz 48 VOUT = 0 V 500 BW = 10 Hz to 100 kHz, VOUT = 1.8 V, IOUT = 10 mA Shutdown Switch Resistance COUT equivalent series resistance dB 700 mA 150 ms 150 mVrms 250 W 5 500 mW DIGITAL INPUT VHI VLO IIN Logic High Level VIN = 2.3 to 6.5 V 1.8 VIN = 2.3 to 6.5 V, 0°C to +125°C junction temperature 1.6 Logic Low Level VIN = 2.3 to 6.5 V Input Current VLOGIC = 0.4 V VLOGIC = VIN V 0.4 V 0.15 1 mA 1.5 4 THERMAL PROTECTION TSD Thermal Shutdown 140 °C THYS Thermal Hysteresis 10 °C 3. Specification for 2.5 V output version unless specified otherwise. 4. Dropout voltage is defined as the input−to−output differential at which the output voltage drops 2% below its nominal value measured at 1 V differential. During test, the input voltage stays always above the minimum 2.3 V. http://onsemi.com 4 CAT6220 TYPICAL CHARACTERISTICS (VIN = 3.5 V, R1 = R2 = 250 KW, IOUT = 100 mA, CIN = 1 mF, COUT = 1 mF, TA = 25°C unless otherwise specified.) 3.0 2.53 2.52 100 mA 2.0 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.5 300 mA 1.5 1.0 0.5 0 1 2 3 4 5 6 2.49 2.47 7 2.54 30 25 20 15 10 6 1 2 3 4 5 2.52 2.51 2.50 2.49 2.48 2.47 2.46 2.45 7 6 0 50 100 150 200 INPUT VOLTAGE (V) OUTPUT LOAD CURRENT (mA) Figure 5. Ground Current vs. Input Voltage Figure 6. Load Regulation 1.6 45 1.4 40 GROUND CURRENT (mA) 50 1.2 1.0 0.8 0.6 0.4 0.2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 250 300 250 300 35 30 25 20 15 10 5 0 7 0 50 100 150 200 INPUT VOLTAGE (V) OUTPUT LOAD CURRENT (mA) Figure 7. Enable Threshold vs. Input Voltage Figure 8. Ground Current vs. Load Current http://onsemi.com 5 7 2.53 1.8 2 5 Figure 4. Line Regulation 35 0 4 Figure 3. Dropout Characteristics 2.55 0 3 INPUT VOLTAGE (V) 40 0 2 INPUT VOLTAGE (V) 5 ENABLE THRESHOLD VOLTAGE (V) 2.50 2.48 OUTPUT VOLTAGE (V) GROUND CURRENT (mA) 0 2.51 CAT6220 TYPICAL CHARACTERISTICS 800 70 700 60 600 50 500 PSRR (dB) CURRENT LIMIT (mA) (VIN = 3.5 V, R1 = R2 = 250 KW, IOUT = 100 mA, CIN = 1 mF, COUT = 1 mF, TA = 25°C unless otherwise specified.) 400 300 100 0 1 2 3 4 5 6 0 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 7 INPUT VOLTAGE (V) FREQUENCY (Hz) Figure 9. Output Short−circuit Current vs. Input Voltage Figure 10. PSRR vs. Frequency (10 mA Load) 300 1.27 250 1.26 ADJUSTABLE VOLTAGE (V) DROPOUT VOLTAGE (mV) 10 VOUT = 0 200 150 100 50 0 −40 −20 0 20 40 60 80 100 120 1.25 1.24 1.23 1.22 1.21 −40 −20 140 40 60 80 100 120 140 Figure 11. Dropout vs. Temperature (300 mA Load) Figure 12. Adjustable Voltage vs. Temperature (100 mA Load) 14 250 13 200 150 100 50 0 20 TEMPERATURE (°C) 300 0 0 TEMPERATURE (°C) GROUND CURRENT (mA) DROPOUT VOLTAGE (mV) 30 20 200 0 40 50 100 150 200 250 12 11 10 9 8 −40 −20 300 0 20 40 60 80 100 120 140 LOAD CURRENT (mA) TEMPERATURE (°C) Figure 13. Dropout vs. Load Current Figure 14. Ground Current vs. Temperature (5 mA Load) http://onsemi.com 6 CAT6220 TRANSIENT CHARACTERISTICS (VIN = 3.5 V, R1 = R2 = 250 KW, IOUT = 100 mA, CIN = 1 mF, COUT = 1 mF, TA = 25°C unless otherwise specified.) Figure 15. Enable Turn−On (100 mA Load) Figure 16. Enable Turn−Off (100 mA Load) Figure 17. Enable Turn−On (300 mA Load) Figure 18. Enable Turn−Off (300 mA Load) Figure 19. Load Transient Response (0.1 mA to 300 mA) Figure 20. Load Transient Response − Detail http://onsemi.com 7 CAT6220 TRANSIENT CHARACTERISTICS (VIN = 3.5 V, R1 = R2 = 250 KW, IOUT = 100 mA, CIN = 1 mF, COUT = 1 mF, TA = 25°C unless otherwise specified.) Figure 21. Slow−Enable Operation (100 mA Load) Figure 22. Slow−Enable Operation (300 mA Load) Figure 23. Enable Turn−On at VIN = 4.5 V (100 mA Load) Figure 24. Enable Turn−On at VIN = 5.5 V (100 mA Load) Figure 25. Enable Turn−On at VIN = 6.5 V (100 mA Load) http://onsemi.com 8 CAT6220 Table 5. THERMAL PERFORMANCE Package Symbol Test Conditions Min Typ Max Unit PACKAGE THERMAL CONDUCTIVITY COMPARISON TSOT−23−5 1 oz Copper Thickness, 100 mm2 qJA 280 68 qJC TDFN−6 _C/W 1 oz Copper Thickness, 100 qJA mm2 160 _C/W 35 qJC RqJA, THERMAL RESISTANCE JUNCTION−TO−AMBIENT (°C/W) 380 330 280 TSOT−5 (1 oz) 230 TSOT−5 (2 oz) 180 TDFN6 2x2.2 (1 oz) 130 80 TDFN6 2x2.2 (2 oz) 0 100 200 300 400 PCB COPPER AREA 500 600 700 (mm2) Figure 26. RqJA vs. PCB Copper Area 450 TDFN 2x2 mm 400 350 Single Heated Output PCB Traces 1 oz Single Heated Output PCB Traces 2 oz Equally Heated Outputs PCB Traces 1 oz Equally Heated Outputs PCB Traces 2 oz qJA (°C/W) 300 250 200 150 100 50 0 0 100 200 300 400 500 600 COPPER AREA (mm2) Figure 27. Thermal Characteristic as a Function of Copper Area on the PCB http://onsemi.com 9 700 CAT6220 PACKAGE DIMENSIONS TSOT−23, 5 LEAD CASE 419AE−01 ISSUE O SYMBOL D MIN NOM A1 0.01 0.05 0.10 A2 0.80 0.87 0.90 b 0.30 c 0.12 A e E1 1.00 0.45 0.15 D 2.90 BSC E 2.80 BSC E1 1.60 BSC E MAX e 0.20 0.95 TYP L 0.30 0.40 L1 0.60 REF L2 0.25 BSC 0º θ 0.50 8º TOP VIEW A2 A b q L A1 c L1 SIDE VIEW END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-193. http://onsemi.com 10 L2 CAT6220 PACKAGE DIMENSIONS TDFN6, 2x2 CASE 511AH−01 ISSUE A D A DETAIL A DAP SIZE 1.8 x 1.2 E2 PIN#1 IDENTIFICATION PIN# 1 INDEX AREA A1 TOP VIEW SIDE VIEW SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 BOTTOM VIEW e 0.25 0.30 0.35 D 1.90 2.00 2.10 D2 1.50 1.60 1.70 E 1.90 2.00 2.10 E2 0.90 1.00 1.10 e L b 0.20 REF b L D2 DETAIL A A 0.65 TYP 0.15 0.25 0.35 A1 Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC standard MO-229. http://onsemi.com 11 FRONT VIEW A3 CAT6220 ORDERING INFORMATION Specific Device Marking Package Type CAT6220TDI−GT3 X2 CAT6220VP5I−GT3 AK Device Order Number Temperature Range Lead Finish Shipping (Note 7) TSOT−23−5 I = Industrial (−40°C to +85°C) NiPdAu Tape & Reel, 3,000 Units / Reel TDFN−6 I = Industrial (−40°C to +85°C) NiPdAu Tape & Reel, 3,000 Units / Reel 5. All packages are RoHS−compliant (Lead−free, Halogen−free). 6. The standard lead finish is NiPdAu pre−plated (PPF) lead frames. 7. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 8. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device Nomenclature document, TND310/D, available at www.onsemi.com ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5817−1050 http://onsemi.com 12 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT6220/D