SPX8863 120 mA, Low Dropout Voltage Regulator (Preliminary Information) FEATURES APPLICATIONS • • • • • • • • • • • • • • • • • • • • Low Noise Output LDO 1% Initial Accuracy At 120mA Very Low Quiescent Current Low Dropout Voltage Current & Thermal Limiting Reverse-Battery Protection Wide Range of Fix Output Voltages 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V, 4.5V, 5.0V, & ADJ Zero Off-Mode Current Small 5-Pin SOT-23 Pin Compatible to MAX8863 PDA Battery Powered Systems Cellular Phone Cordless Telephones Radio Control Systems Portable/Palm Top/Notebook Computers Portable Consumer Equipment Portable Instrumentation Bar Code Scanners SMPS Post-Regulator PRODUCT DESCRIPTION The SPX8863 is a low-power positive voltage regulator with ultra low noise output and very low dropout voltage. In addition, this device offers very low quiescent current of approximately 600uA at 100mA output. The SPX8863 initial tolerance is less than 1% max and has a logic compatible ON/OFF switching input. The unique features of the SPX8863 include a reference bypass pin for the best performance results of low noise. This device is an excellent choice for use in battery powered applications such as cellular/ cordless telephones, radio control systems, and portable computers. When disabled power consumption drops to nearly zero. The device also has a very low output temperature coefficient, making it a low power voltage reference. The SPX8863 key features include protection against reversed battery, fold-back current limiting, and automotive load dump protection. The SPX8863 is available in many fixed voltages (1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V, 4.5V, & 5.0V) or with an adjustable output. This device is offered in a small 5-pin SOT-23 package, providing a small footprint with all the performance features with fixed or adjustable output. MARKING INFORMATION Voltage Marking Voltage Marking 1.8 2.5 2.8 3.0 3.3 9WXX 9XXX 9YXX A3XX A2XX 4.5 4.70 5.0 ADJ A4XX A5XX A6XX A7XX PIN CONNECTIONS SOT-23-5 (M5) SOT-23-5 (M5) BYP VOUT ADJ VOUT 5 4 5 4 SPX8863 SPX8863 1 2 3 EN GND VIN Top View Fixed Output Voltage 1 2 3 EN GND VIN Top View Adjustable Output Voltage Rev. 10/24/00 SPX8863 ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS Power Dissipation...................................... Internally Limited Lead Temp. (Soldering, 5 Seconds) ............................ 260°C Operating Junction Temperature Range ..... -40°C to +125°C Input Supply Voltage........................................-20V to +20V Enable Input Voltage........................................-20V to +20V Input Voltage.................................................. +2.5V to+16V Operating Junction Temperature Range ..... -40°C to +125°C Enable Input Voltage............................................. 0V to VIN SOT-23-5 (θJA) ..................................................... See Note 1 ELECTRICAL CHARACTERISTICS TJ = 25°C, VIN = VOUT + 1V, IL = 100µA, CL = 1.0µF, and VENABLE > 2.4V. Unless otherwise specified boldface applies over the junction temperature range Parameter Test Conditions Typ Min Max Units Output Voltage Tolerance (VOUT) Output Voltage Temperature Coef Line Regulation Load Regulation Dropout Voltage (See Note 2) (VIN- VO) Quiescent Current (IGND) Ground Pin Current (IGND) Ripple Rejection (PSRR) Current Limit (ILIMIT) Output Noise (eNO) Input Voltage Level Logic Low (VIL) Input Voltage Level Logic High (VIH) ENABLE Input Current -1 -2 IL = 100µA IL = 500µA VIN = VOUT + 1V to 16V VIN = VOUT + 1V to 16V IL = 0.1mA to 120mA IL = 0.1mA to 120mA IL = 100 µA IL = 50mA IL = 120mA VENABLE < 0.6V VENABLE < 0.25V IL = 100 µA IL = 50 mA IL = 120mA VOUT = 0V IL = 50mA, CL = 1.0µF (10Hz – 100KHz) 40 0.03 0.1 0.2 0.2 0.5 50 190 260 1 5 125 600 1600 0.1 30 140 190 <1 80 350 950 55 360 %VNOM ppm/°C %/V % mV µA µA dB mA µVRMS 320 390 OFF ON VIL < 0.6V VIH > 2.0V +1 +2 0.6 V 2 20 µA 2.0 0.01 2 Note 1: The maximum allowable power dissipation is a function of maximum operating junction temperature, TJ (max), the junction to ambient thermal resistance, and the ambient, θJA, and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is given: PD (max) = (TJ(max) - TA) θJA. Exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will go into thermal shutdown. The θJA of the SPX8863 is 220oC/W mounted on a PC board. Note 2: Not apply to 1.8V version. Rev. 10/24/00 SPX8863 TYPICAL APPLICATION VIN 3 GND 2 4 VOUT + + EN 1 SPX8863 1.0uF 5 BYP (Optn) ENABLE may be tied directly to VIN Rev. 10/24/00 SPX8863 Application Hints In general, linear regulator stability decreases with higher output currents. In some applications the SPX8863 may operate at few milliamps. In these applications the output capacitance can be further reduced. For example, when the regulator is running at 10mA output current the output capacitance value is half compared to the same regulator that is running at 150mA. The SPX8863 requires an output capacitor for device stability. The value required varies greatly depending upon the application circuit and other factors. The high frequency characteristics of electrolytic capacitors depend greatly on the type and also on the manufacturer. Sometimes bench testing is the only means to determine the proper capacitor type and value. The high quality 2.2µF aluminum electrolytic capacitor covers all general application circuits, this stability can be obtained with a tantalum electrolytic value of 1µF. With the SPX8863 adjustable regulator, the minimum value of output capacitance is a function of the output voltage. The value decreases with higher output voltages, since the closed loop gain is increased. Typical Applications Circuits The SPX8863 provides access to the internal reference. A 10µF capacitor on the BYP pin will provide a significant reduction in output noise. This pin may be left unconnected if the output noise is not a major concern. The SPX8863 start-up speed is inversely proportional to the size of its capacitor. Applications requiring a slow ramp-up of output voltage should consider larger values of CBYP. If the rapid turn-ON is necessary, omit bypass capacitor. Figure 1 shows SPX8863 standard application circuit. The EN (enable) pin is pulled high (>2.0V) to enable the regulator. To disable the regulator, EN < 0.6V. V IN + 2 GND + SPX8863 5 BYP (Optn) 1 EN V OUT 4 3 Hi-ON Lo-OFF Top View Fig. 1 The SPX8863 in figure 2 shows adjustable output voltage configuration. Two resistors set the output voltage. The formula for output voltage is: VOUT = 1.235V x (1+ R1) R2 Resistor values are not critical as the Adj. pin has high input impedance, for best results use resistors of 47kΩ or less. A capacitor for Adj to ground will provide improved noise performance. 3 V IN + GND EN Hi-ON Lo-OFF 4 2 1 SPX8863 R1 + 5 ADJ Byp (Optn) Top View VOUT R2 Fig. 2 Rev. 10/24/00 SPX8863 Ground Current Vs. Input Voltage Dropout Voltage Vs. Load Current 110 200 100 90 I Gnd (uA) 150 100 Vin = 4.3V Vo = 3.3V CL = 1uF 50 80 70 60 Vo = 3.3V IL = 100uA CL = 1uF 50 40 0 0 20 40 60 80 100 120 30 4 IL ( mA) 6 8 10 12 14 16 14 16 Vin (V) Output Voltage Vs. Input Voltage Ground Current Vs. Load Current (in Dropout) 3.330 1.50 3.325 3.3V Device IL = 100uA CL = 1uF 3.320 3.315 1.00 3.310 3.305 0.50 3.300 3.3V Device Vin = 4.3V CL = 1uF 0.00 0 20 40 60 80 100 3.295 3.290 4 120 6 8 10 12 Vin (V) IL (mA) Dropout Voltage Vs. Load Current Output Voltage Vs. Load Current 3.310 200 3.308 3.3V Device Vin = 4.3V CL = 1uF 150 3.306 100 3.304 Vin = 4.3V Vo = 3.3V CL = 1uF 50 3.302 3.300 0 0 20 40 60 IL ( mA) 80 100 120 0 20 40 60 80 100 120 IL ( mA) Rev. 10/24/00 SPX8863 Ground Current Vs. Temperature Ground Current Vs. Temperature 90.0 950 850 Vin = 4.3V Vout = 3.3V CL = 1uF IL = 100uA 70.0 I Gnd (uA) I Gnd (uA) 80.0 750 650 Vin = 4.3V Vout = 3.3V CL= 1uF IL = 100mA 60.0 550 50.0 450 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 Temperature (Degree C) Ground Current in Dropout Vs. Temperature 60 80 100 120 Output Voltage Vs Temperature 3.400 2.30 3.380 2.20 3.360 Vin = 4.3V Vout = 3.3V CL = 1uF IL = 150mA 2.00 1.90 Vin = 4.3V Vout = 3.3V CL = 1uF 3.340 3.320 Vout (V) 2.10 I Gnd (mA) 40 Temperature (Degree C) 1.80 3.300 3.280 1.70 3.260 1.60 3.240 1.50 3.220 1.40 3.200 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Temperature (Degree C) Temperature (Degree C) Enable Voltage, On Threshold Vs. Input Voltage 1.60 VEN, On Threshold (V) 1.50 1.40 1.30 1.20 Vout = 3.3V IL = 100uA CL = 1uF 1.10 1.00 0.90 0.80 4 6 8 10 12 14 16 Vin (V) Rev. 10/24/00 SPX8863 Rev. 10/24/00 SPX8863 PACKAGE DRAWING SOT-23-5L (M5) D B (5 PLACES) H E e e1 A A2 A1 C SYMBOL L MIN. MAX MIN. MAX. A 0.90 1.30 .035 .051 A1 0 0.10 0 .004 A2 INCHES MILLIMETERS 0.80 REF .0315 REF B 0.30 0.50 .012 .019 C 0.10 0.35 .004 .0137 D 2.70 3.10 .106 .122 E 1.40 1.80 .055 .071 e 0.95 BSC. 1.70 2.10 .066 .082 H 2.50 3.00 .098 .118 MIN 0.2 1. REFER TO APPLICABLE 2. CONTROLLING DIMENTION : MILLIMETER 3. PACKAGE SURFACE FINISHING TO BE SMOOTH FINISH. .037 BSC. e1 L NOTE: MIN .0078 Rev. 10/24/00 SPX8863 ORDERING INFORMATION Ordering No. Output Voltage Packages SPX8863M5 SPX8863M5-1.8 SPX8863M5-2.5 SPX8863M5-2.8 SPX8863M5-3.0 SPX8863M5-3.3 SPX8863M5-4.0 SPX8863M5-4.5 SPX8863M5-5.0 Adj 1.5V 2.5V 2.8V 3.0V 3.3V 4.0V 4.5V 5.0V 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation Headquarters and Main Offices: 22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: [email protected] 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 935-7600 FAX: (408) 934-7500 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described hereing; neither does it convey any license under it patent rights nor the rights of others. Rev. 10/24/00