SP6203EM5-2.5

® SP6203/6205 Low Noise, 300mA and 500mA CMOS LDO Regulators FEATURES ■ Very Low Dropout Voltage: 0.6Ω PMOS Pass Device ■ Accurate Output Voltage: 2% over Temperature ■ Guaranteed 500mA Output Current: SP6205 ■ Ultra Low Noise Output: 12µVRMS with 10nF Bypass ■ Unconditionally Stable with 2.2µF Ceramic ■ Low Quiescent Current: 45µA ■ Very Low Ground Current: 350µA at 500 mA ■ Power-Saving Shutdown Mode: < 1µA ■ Fast Turn-On and Turn-Off: 60us ■ Fast Transient Response ■ Current Limit and Thermal Shutdown Protection ■ Very Good Load/Line Regulation: 0.07/0.04% ■ Excellent PSRR: 67dB 0.4V). The settling time is defined as the condition where the output reaches 98% of its total value after being released from shutdown. The latter is also called the turn on time and is dependent on the output capacitor, a little bit on load and, if present, on a bypass capacitor. TJ(max) is the maximum junction temperature of the die and is 125°C. TA is the ambient temperature. θJA is the junction-to-ambient thermal resistance for the regulator and is layout dependent. The SOT-23-5 package has a θJA of approximately 191°C/W for minimum PCB copper footprint area. This results in a maximum power dissipation of: PD(max) = [(125°C - 25°C)/(256°C/W)] = 390mW The actual power dissipation of the regulator circuit can be determined using one simple equation: PD = (VIN - VOUT) * IOUT + VIN * IGND t(s) = T(on) VENABLE 98% VOUT 2% t(wu) Turn Off Time The turn off time is defined as the condition where the output voltage drops about 66% (θ) of its total value. 5θ to 7θ is the constant where the output voltage drops nearly to zero. There will always be a small voltage drop in shutdown because of the switch unless we short-circuit it. The turn off time of the output voltage is dependent on load conditions, output capacitance on VOUT (time constant τ = RLCL) and also on the difference in voltage between input and output. Thermal Considerations To prevent the device from entering thermal shutdown. maximum power dissipation can not be exceeded. Substituting PD(max) for PD and solving for the operating conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, if we are operating the SP6203 3.0V at room temperature, with a minimum footprint layout and and output current of 300mA, the maximum input voltage can be determined, based on the equation below. Ground pin current can be taken from the electrical specifications table (0.23mA at 300mA). 390mW = (VIN-3.0V) * 300mA + VIN *0.23mA After calculations, we find that the maximum input voltage of a 3.0V application at 300mA of output current in a SOT-23-5 package is 4.3V. So if the intend is to operate a 5V output version from a 6V supply at 300mA load and at a 25°C ambient temperature, then the actual total power dissipation will be: PD=([6V-5V]*[300mA])+(6V*0.23mA)=301.4mW This is well below the 390mW package maximum. Therefore, the regulator can be used. The SP6203/6205 is designed to provide 300/ 500 mA of continuous current in a tiny package. Maximum power dissipation can be calculated based on the output current and the voltage drop across the part. To determine the maximum power dissipation of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation: PD = (TJ(max) - TA) / θJA Date: 05/25/04 SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators © Copyright 2004 Sipex Corporation 9 THEORY OF OPERATION: Continued Note that the regulator cannot always be used at its maximum current rating. For example, in a 5V input to 3.0V output application at an ambient temperature of 25°C and operating at the full 500mA (IGND = 0.355mA) load, the regulator is limited to a much lower load current, determined by the following equation: 390mW = ( [5V-3V]*[ Iload(max)]) +(5V*0.355mA) After calculation, we find that in such an application (SP6205) the regulator is limited to 194.1mA. Doing the same calculations for the 300mA LDO (SP6203) will limit the regulator’s output current to 194.4mA. Also, taking advantage of the very low dropout voltage characteristics of the SP6203/6205, power dissipation can be reduced by using the lowest possible input voltage to minimize the input-to-output drop. Adjustable Regulator Applications Layout Considerations The primary path of heat conduction out of the package is via the package leads. Therefore, careful considerations have to be taken into account: 1) Attaching the part to a larger copper footprint will enable better heat transfer from the device, especially on PCB’s where there are internal ground and power planes. 2) Place the input, output and bypass capacitors close to the device for optimal transient response and device behavior. 3) Connect all ground connections directly to the ground plane. In case there’s no ground plane, connect to a common local ground point before connecting to board ground. Such layouts will provide a much better thermal conductivity (lower θJA) for, a higher maximum allowable power dissipation limit. The SP6203/6205 can be adjusted to a specific output voltage by using two external resistors (see functional diagram). The resistors set the output voltage based on the following equation: VOUT = VREF *(R1/R2 + 1) Resistor values are not critical because ADJ (adjust) has a high input impedance, but for best performance use resistors of 470KΩ or less. A bypass capacitor from ADJ to VOUT provides improved noise performance. Dual-Supply Operation When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground. Date: 05/25/04 SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators © Copyright 2004 Sipex Corporation 10 PACKAGE: 5 PIN SOT-23 D e1 N N/2 +1 E/2 E1/2 E1 E B B SEE VIEW C VIEW A-A 1 e 2 N/2 Ø1 b Gauge Plane L2 5 PIN SOT-23 JEDEC MO-178 (AA) Variation A A1 A2 b c D E E1 e e1 L L1 L2 Ø Ø1 Dimensions in (mm) MIN 0 0.90 0.30 0.08 NOM MAX 1.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 BSC 1.90 BSC 0.30 0.45 0.60 REF 0.25 BSC 0º 5º 4º 10º 8º 15º 0.60 1.45 0.15 1.30 0.50 0.22 Seating Plane Ø1 L L1 Ø VIEW C A A2 Seating Plane A1 SIDE VIEW b WITH PLATING c BASE METAL SECTION B-B 5 PIN SOT-23 Date: 05/25/04 SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators © Copyright 2004 Sipex Corporation 11 PACKAGE: 8 PIN DFN Top View D D/2 1 Bottom View D2 2 E/2 E E2 K L b Pin 1 identifier to be located within this shaded area. Terminal #1 Index Area (D/2 * E/2) e Side View 2x3 8 Pin DFN JEDEC mo-229C (VCED-2) Variation Symbol A Dimensions in (mm) MIN 0.80 0 0.18 NOM 0.90 0.02 0.20 0.25 2.00 BSC MAX 1.00 0.05 0.30 A A1 A3 A1 A3 b D D2 e E E2 K L 1.50 1.60 0.20 0.30 0.50 3.00 BSC 0.40 1.75 1.90 0.50 2x3 8 Pin DFN Date: 05/25/04 SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators © Copyright 2004 Sipex Corporation 12 ORDERING INFORMATION Part Number Top Mark Temperature Range Package Type SP6203EM5-2.5 ..................... L2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.5/TR ............... L2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.7 ..................... G2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.7/TR ............... G2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.8 ..................... Q3WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.8/TR ............... Q3WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.85 ................... H2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-2.85/TR ............. H2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-3.0 ..................... M2WW ..................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-3.0/TR ............... M2WW ..................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-3.3 ...................... J2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-3.3/TR ................ J2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-ADJ ................... Q2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203EM5-ADJ/TR ............. Q2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6203ER-2.5 .................. 620325YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.5/TR ............ 620325YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.7 .................. 620327YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.7/TR ............ 620327YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.8 .................. 620328YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.8/TR ............ 620328YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.85 ................ 620385YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-2.85/TR .......... 620385YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-3.0 .................. 620330YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-3.0/TR ............ 620330YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-3.3 .................. 620333YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-3.3/TR ............ 620333YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-ADJ ................ 6203ERYWW ................ -40˚C to +125˚C ......................... 8 Pin DFN SP6203ER-ADJ/TR .......... 6203ERYWW ................ -40˚C to +125˚C ......................... 8 Pin DFN Available in lead free packaging. To order add "-L" suffix to part number. Example: SP6205ER-ADJ/TR = standard; SP6205ER-L-ADJ/TR = lead free /TR = Tape and Reel Pack quantity is 2,500 for SOT-23 and 3,000 for DFN. Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Date: 05/25/04 SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators © Copyright 2004 Sipex Corporation 13 ORDERING INFORMATION Part Number Top Mark Temperature Range Package Type SP6205EM5-2.5 ..................... V2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.5/TR ............... V2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.7 ..................... R2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.7/TR ............... R2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.8 ..................... E3WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.8/TR ............... E3WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.85 ................... S2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-2.85/TR ............. S2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-3.0 ..................... W2WW ..................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-3.0/TR ............... W2WW ..................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-3.3 ..................... T2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-3.3/TR ............... T2WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-ADJ ................... A3WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205EM5-ADJ/TR ............. A3WW ...................... -40˚C to +125˚C .................... 5 Pin SOT-23 SP6205ER-2.5 .................. 620525YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.5/TR ............ 620525YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.7 .................. 620527YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.7/TR ............ 620527YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.8 .................. 620528YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.8/TR ............ 620528YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.85 ................ 620585YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-2.85/TR .......... 620585YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-3.0 .................. 620530YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-3.0/TR ............ 620530YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-3.3 .................. 620533YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-3.3/TR ............ 620533YWW ................. -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-ADJ ................ 6203ERYWW ................ -40˚C to +125˚C ......................... 8 Pin DFN SP6205ER-ADJ/TR .......... 6203ERYWW ................ -40˚C to +125˚C ......................... 8 Pin DFN Available in lead free packaging. To order add "-L" suffix to part number. Example: SP6205ER-ADJ/TR = standard; SP6205ER-L-ADJ/TR = lead free /TR = Tape and Reel Pack quantity is 2,500 for SOT-23 and 3,000 for DFN. Corporation Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 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 herein; neither does it convey any license under its patent rights nor the rights of others. Date: 05/25/04 SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators © Copyright 2004 Sipex Corporation 14