Advanced Power Electronics Corp. APE8805A 600mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN DESCRIPTION FEATURES The APE8805A is a low dropout, positive linear regulator with very low quiescent current. The APE8805A can supply 600mA output current with low dropout voltage at about 600mV. The BP pin with a 10nF bypass capacitor can help reduce the output noise level. The shutdown function can provide remote control for the external signal to decide the on/off state of APE8805A. With a logic high level at SHDN pin, the device is in the on state, and vice versa. ● Low Dropout Voltage of 600mV at 600mA ● Guaranteed 600mA Output Current ● Very Low Quiescent Current at 30µA ● Max. ± 2% Output Voltage Accuracy ● Needs Only 1µF Capacitor for Stability ● Thermal Shutdown Protection ● Current Limit Protection ● Active Low Shutdown Control ● Low-ESR Ceramic Capacitor for Output Stability. ● Tiny package: SOT-23-5L ● RoHS Compliant The APE8805A regulator is able to operate with output capacitors as small as 1µF for stability. Other than the current limit protection, APE8805A also offers the on chip thermal shutdown feature providing protection against overload or any condition when the ambient temperature exceeds the maximum junction temperature. The APE8805A offers high precision output voltage of ± 2%. It is available in fixed output voltages including 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, and 3.3V. The APE8805A is housed in low-profile, space-saving 5-lead SOT-23 package. PIN ASSIGNMENTS 1 4 2 3 ● DSC ● Wireless Devices ● LCD Modules ● Battery Power Systems ● Card Readers ● PDA ORDERING INFORMATION APE8805A-□□□ SOT-23-5L(Y5) 5 APPLICATIONS TOP VIEW 1. VIN 2. GND 3. SH DN 4. BP 5. VOUT P: Pb Free with Commercial Standard (RoHS Compliant) Package Type Y5: SOT-23-5L Output Voltage 15: 1.5V 28: 2.8V 18: 1.8V 30: 3.0V 25: 2.5V 33: 3.3V 20: 2.0V Figure 1. Pin Assignment of APE8805A SOT-23-5L Marking APE8805A-15Y5P Product Code Fi APE8805A-28Y5P Product Code Fn APE8805A-18Y5P Fk APE8805A-30Y5P Fr APE8805A-25Y5P Fm APE8805A-33Y5P Fs APE8805A-20Y5P FE Part Number Data and specifications subject to change without notice. Part Number 1 201003129 Advanced Power Electronics Corp. APE8805A TYPICAL APPLICATION CIRCUIT VIN VIN CIN 1µF COUT 1µF APE8805A GND VSHDN VOUT VOUT BP SHDN CBP 10nF Figure 2. Typical Application Circuit of APE8805A Note：To prevent oscillation, it is recommended to use minimum 1µF X7R or X5R dielectric capacitors if ceramics are used as input/output capacitors. FUNCTIONAL PIN DESCRIPTION Pin Name Pin Function VIN Power is supplied to this device from this pin which is required an input filter capacitor. In general, the input capacitor in the range of 1µF to 10µF is sufficient. VOUT The output supplies power to loads. The output capacitor is required to prevent output voltage from oscillation. The APE8805A is stable with an output capacitor 1µF or greater. The larger output capacitor will be required for application with larger load transients. The large output capacitor could reduce output noise, improve stability, and PSRR. GND Common ground pin Reference Noise Bypass , the Bypass Capacitor >= 1nF BP Chip Enable (Active High) SHDN BLOCK DIAGRAM RSEN VIN VOUT PMOS Current Limit SHDN Power Shutdown _ Thermal Shutdown Error Amp R1 + Vref 1.2V BP R2 GND Figure 3. Block Diagram of APE8805A 2 Advanced Power Electronics Corp. APE8805A ABSOLUTE MAXIMUM RATINGS ● Supply Input Voltage (VIN)----------------------------------------------------------------------------------- + 6V ● Maximum Junction Temperature (TJ)-------------------------------------------------------------------- + 150℃ ● Power Dissipation SOT-23-5L (PD)----------------------------------------------------------------------- + 0.4W ● Package Thermal Resistance SOT-23-5L (θJA)-------------------------------------------------------- + 250℃/W ● Storage Temperature Range (TS)------------------------------------------------------------------------- - 65 to + 150℃ ● Lead Temperature (Soldering, 10 sec.) (TLEAD)-------------------------------------------------------- + 260℃ Note：Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. RECOMMENDED OPERATING CONDITIONS ● Input Voltage (VIN)-------------------------------------------------------------------------------------------- + 2.8 to + 5.5V ● Operating Junction Temperature Range (TJ)---------------------------------------------------------- - 40 to + 125℃ Ambient temperature ( TA )--------------------------------------------------------------------------------- -40 to 85ºC ELECTRICAL CHARACTERISTICS (VIN=VOUT+1V or VIN=2.8V whichever is greater, SHDN pin connected to VIN , CIN=1µF, COUT=1µF, TA=25 ºC, unless otherwise specified) Parameter Current Limit Quiescent Current Standby Current Symbol Conditions ILIMIT RLoad=1Ω IQ IO= 0mA ISTBY ∆VOUT IO= 1mA Dropout Voltage (Note 1) VDROP IO=600mA ∆VLINE Load Regulation (Note 2) Typ Max 600 Unit mA 30 VIN=2.8~5V, Output Off Output Voltage Accuracy Line Regulation Min -2 1.5V ≤ VOUT ≤ 2.0V 1400 2.0V < VOUT ≤ 2.8V 800 2.8V < VOUT ≤ 4.5V 600 50 µA 0.1 µA +2 % mV IO=1mA, VIN=VOUT +1V to 5V 1 5 mV ∆VLOAD IO=0mA to 600mA 13 50 mV PSRR VIN=VOUT+1V fRIPPLE = 120Hz, COUT = 1µF 60 Output Noise ∆n CBP=10nF, f=1KHz, VIN=5V 0.4 Temperature Coefficient TC IOUT = 1mA, VIN = 5V 50 ppm/ ºC TSD 160 ºC Thermal Shutdown Hysteresis ∆TSD 25 ºC Shutdown Pin Current I SHDN Noise Bypass Terminal Voltage VREF Ripple Rejection Thermal Shutdown Temperature dB µV Hz 0.1 1.23 µA V 3 Advanced Power Electronics Corp. Shutdown Pin Voltage (ON) V SHDN (ON) Shutdown Pin Voltage (OFF) V SHDN (OFF) Shutdown Exit Delay Time ∆T APE8805A 1.4 V 0.4 CBP=0.1uF, COUT=1uF, IOUT=30mA 300 V µs Note 1：The dropout voltage is defined as VIN-VOUT, which is measured when VOUT drops about 100mV. Note 2：Regulation is measured at a constant junction temperature by using 40ms current pulse and load regulation in the load range from 0mA to 600mA. APPLICATION INFORMATION The APE8805A is a low dropout linear regulator that could provide 600mA output current at dropout voltage about 600mV. Current limit and on chip thermal shutdown features provide protection against any combination of overload or ambient temperature that could exceed maximum junction temperature. 1. Output and Input Capacitor The APE8805A regulator is designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability. Larger value of the output capacitor decreases the peak deviations and improves transient response for larger current changes. The capacitor types (aluminum, ceramic, and tantalum) have different characterizations such as temperature and voltage coefficients. All ceramic capacitors are manufactured with a variety of dielectrics, each with different behavior across temperature and applications. Common dielectrics used are X5R, X7R and Y5V. It is recommended to use 1uF to 10uF X5R or X7R dielectric ceramic capacitors with 30mΩ to 50mΩ ESR range between device outputs and ground for stability. The APE8805A is designed to be stable with low ESR ceramic capacitors and higher values of capacitors and ESR could improve output stability. The ESR of output capacitor is very important because it generates a zero to provide phase lead for loop stability. There are no requirements for the ESR on the input capacitor, but its voltage and temperature coefficient have to be considered for device application environment. 2. Protection Features In order to prevent overloading or thermal condition from damaging the device, APE8805A has internal thermal and current limiting functions designed to protect the device. It will rapidly shut off PMOS pass element during overloading or over temperature condition. 3. Thermal Consideration The power handling capability of the device will be limited by maximum operation junction temperature. The power dissipated by the device will be estimated by PD = IOUT × (VIN-VOUT). The power dissipation should be lower than the maximum power dissipation listed in “Absolute Maximum Ratings” section. 4. Shutdown Operation The APE8805A is shutdown by pulling the SHDN input low, and turned on by driving the SHDN high. If this function is not used, the SHDN input should be tied to VIN to keep the regulator on at all times (the SHDN must not be left floating). 4 Advanced Power Electronics Corp. APE8805A 50 850 45 800 Current Limit(mA) Quiescent Current(uA) TYPICAL PERFORMANCE CURVE 40 750 35 700 650 30 3.0 3.5 4.0 4.5 5.0 5.5 3.5 6.0 4.0 Figure 4. Quiescent Current vs. Input Voltage 5.0 5.5 6.0 Figure 5. Current limit vs. Input Voltage 850 60 Quiescent Current(uA) Current Limit (mA) 4.5 Input Voltage(v) Input Voltage(v) 800 750 700 50 40 30 20 650 -40 -20 0 20 40 60 80 100 -40 120 -20 0 20 40 60 80 100 120 o o Temperaure( C) Temperature( C) Figure 6. Current limit vs. Temperature Figure 7. Quiescent Current vs. Temperature 1000 o Tj=-40 C o Tj=25 C o Tj=85 C o Tj=125 C 0.999 800 0.998 Dropout Voltage(mV) Normalized Output Voltage 1.000 0.997 0.996 0.995 0.994 0.993 600 400 200 0.992 0.991 0.990 -25 0 25 50 75 100 125 0 0 100 200 300 400 500 600 o Temperature( C) Figure 8. Output Voltage vs. Temperature Loading Current(mA) Figure 9. Dropout Voltage vs. Temperature 5 Advanced Power Electronics Corp. APE8805A TYPICAL PERFORMANCE CURVE (Continued) VIN=5V IOUT=150mA CIN=1uF COUT=1uF VOUT VOUT SHDN IOUT Figure 10. Shutdown Function Figure 11. Load Transient Response VIN=5V IOUT=1mA CIN=1uF COUT=1uF VIN=4~5V IOUT=10mA CIN=1uF COUT=1uF VOUT VIN VOUT SHDN Figure 12. Line Transient Response Figure 13. Shutdown Exit Delay Time 6 ADVANCED POWER ELECTRONICS CORP. Package Outline : SOT-23-5L Millimeters SYMBOLS MIN NOM MAX A 1.00 1.10 1.30 A1 0.00 --- 0.10 A2 0.70 0.80 0.90 b 0.35 0.40 0.50 C 0.10 0.15 0.25 D 2.70 2.90 3.10 E 1.50 1.60 1.80 e --- 1.90(TYP) --- H 2.60 2.80 3.00 L 0.37 --- --- θ1 1° 5° 9° e2 --- 0.95(TYP) --- Note 1：Package Body Sizes Exclude Mold Flash Protrusions or Gate Burrs. Note 2：Tolerance ± 0.1000 mm(4mil) Unless Otherwise Spe- cified. Note 3：Coplanarity：0.1000 mm Note 4：Dimension L Is Measured in Gage plane. Part Marking Information & Packing : SOT-23 -5L Part : F&(Identification code) F&XXX APE8805A-15Y5P Fi APE8805A-28Y5P Fn APE8805A-18Y5P Fk APE8805A-30Y5P Fr APE8805A-25Y5P APE8805A-20Y5P Fm FE APE8805A-33Y5P Fs Date Code 7