APE8800A A-POWER | Alldatasheet

Document overview

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Technical content

Features

  • Low Dropout Voltage of 250mV at 300mA
  • Guaranteed 300mA 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-23-5
  • RoHS Compliant

Applications

  • DSC
  • Wireless Devices
  • LCD Modules
  • Battery Power Systems
  • Card Readers
  • PDA P: Pb Free with Commercial Standard (RoHS Compliant) Output Voltage 15: 1.5V 28 : 2.8V 18: 1.8V 30: 3.0V 25: 2.5V 33: 3.3V APE8800A-½½½ Package Type Y5: SOT-23-5 Advanced Power Electronics Corp.

NotejStresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. Recommended Operating Conditions

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 Symbol Conditions Min Typ Max Unit Current Limit I LIMIT RLoad=1Ω 300 mA Quiescent Current I Q I O= 0mA 30 50 µA Standby Current I STBY VIN=2.8~5V, Output Off 0.1 µA Output Voltage Accuracy ∆VOUT IO= 1mA -2 +2 % 1.5V ≤ VOUT ≤ 2.0V 1100 2.0V < VOUT ≤ 2.8V 350 Dropout Voltage (Note 1) V DROP I O=300mA 2.8V < VOUT ≤ 4.5V 250 mV Line Regulation ∆VLINE IO=1mA, VIN=VOUT +1V to 5V 1 5 mV Load Regulation (Note 2) ∆VLOAD IO=0mA to 300mA 6 20 mV Ripple Rejection PSRR VIN=VOUT+1V fRIPPLE = 120Hz, COUT = 1µF 60 dB Output Noise ∆n CBP=10nF, f=1KHz, VIN=5V 0.4 Hz µV Temperature Coefficient TC I OUT = 1mA, VIN = 5V 50 ppm/ ºC Thermal Shutdown Temperature TSD 160 ºC Thermal Shutdown Hysteresis ∆TSD 25 ºC Shutdown Pin Current I SHDN 0.1 µA Noise Bypass Terminal Voltage V REF 1.23 V Shutdown Pin Voltage (ON) V SHDN(ON) 1.4 V Shutdown Pin Voltage (OFF) V SHDN(OFF) 0.4 V Shutdown Exit Delay Time ∆T CBP=0.1uF, COUT=1uF, IOUT=30mA 300 µs Note 1jThe dropout voltage is defined as VIN-VOUT, which is measured when VOUT drops about 100mV. Note 2jRegulation is measured at a constant junction temperature by using 40ms current pulse and load regulation in the load range from 0mA to 300mA. Advanced Power Electronics Corp.

Application Information

The APE8800A is a low dropout linear regulator that could provide 300mA output current at dropout volt- age about 250mV. 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 APE8800A 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 tant- alum) 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 30m Ω to 50m Ω ESR range betw- een device outputs and ground for stability. The APE8800A is designed to be stable with low ESR ceramic capacitors and higher values of cap- acitors and ESR could im prove 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 con- dition from damaging the device, APE8800A has internal thermal and current limiting functions designed to protect the device. It will rapidly shut off PMOS pass element during overload- ing or over temperature condition. 3. Thermal Consideration The power handling capability of the device will be limited by maximum operation junction tem- perature. 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 APE8800A is shutdown by pulling the SHDN input low, and turned on by driving the SHDN high. If this functio n is no t used, the SHDN input should be tied to VIN to keep the regu- lator on at all times (the SHDN must not be left floating). Advanced Power Electronics Corp.

DIMENSION IN MILLIMETER SYMBOLS UNIT 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 H 2.60 2.80 3.00 L 0.37 --- --- θ1 1º 5º 9º Note 1jPackage Body Sizes Exclude Mold Flash Protrusions or Gate Burrs. Note 2jTolerance ± 0.1000 mm(4mil) Unless Otherwise Spe- cified. Note 3jCoplanarityj0.1000 mm Note 4jDimension L Is Measured in Gage plane. Advanced Power Electronics Corp.