Advanced Power Electronics Corp. APE8800A 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN FEATURES DESCRIPTIOON Low Dropout Voltage of 250mV at 300mA Guaranteed 300mA Output Current Very Low Quiescent Current at 30µA ±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 & TSOT-23-5L RoHS Compliant & Halogen Free APPLICATIONS DSC Wireless Devices LCD Modules The APE8800A is a low dropout, positive linear regulator with very low quiescent current. The APE8800A can supply 300mA output current with low dropout voltage at about 250mV. 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 APE8800A. With a logic high level at SHDN pin, the device is in the on state, and vice versa. The APE8800A regulator is able to operate with output capacitors as small as 1 µ F for stability. Other than the current limit protection, APE8800A 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 APE8800A offers high precision output voltage of +2%. It is available in fixed output voltages including 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.1V, 3.3V, 3.6V, 4.5V and 5.0V. The APE8800A is housed in low-profile, space-saving SOT-23-5L & TSOT-23-5L package. Battery Power Systems Card Readers PDA TYPICAL APPLICATION Figure 1. Typical Application Circuit of APE8800A Note：To prevent oscillation, it is recommended to use minimum 1µF X7R or X5R dielectric capacitors if ceramics are used as input/output capacitors. ORDERING / PACKAGE INFORMATION (Top View) APE8800A - X X X Output Voltage 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V 30 : 3.0V 31 : 3.1V 33 : 3.3V 36 : 3.6V 45 : 4.5V 50 : 5.0V P: Pb Free with Commercial Standard (RoHS Compliant) Package Type Y5 : SOT-23-5L TY5 :TSOT-23-5L Data and specifications subject to change without notice VIN 1 GND 2 SHDN 3 5 VOUT 4 BP SOT-23-5L (Y5) TSOT-23-5L (TY5) 1 20130104G Advanced Power Electronics Corp. APE8800A ABSOLUTE MAXIMUM RATINGS Input Voltage (VIN) ----------------------------------------- 6V Power Dissipation ------------------------------------------ 0.4W Storage Temperature Range (T stg) --------------------- -65°C To 150°C Maximum Junction Temperature (TJ) ----------------- 150°C Lead Temperature (Soldering, 10sec, T LEAD) ------- 260°C Thermal Resistance Junction to Ambient (Rth ja) 250oC/W 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 (T J) ------- -40 to 125oC Ambient Temperature (T A) ------------------------------ -40 to 85oC ELECTRICAL SPECIFICATIONS ( 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 SYM Output Voltage Accuracy ∆VOUT Current Limit Quiescent Current Standby Current ILIMIT IQ ISTBY MIN TYP MAX UNITS -2 - 2 % 300 - - mA IO= 0mA - 30 55 µA VIN=2.8 ~ 5V, Output Off - - 1.5 µA 1.2V ≦ VOUT ≦ 2.0V - 1100 - 2.0V < VOUT ≦ 2.8V - 350 - 2.8V < VOUT ≦ 4.5V TEST CONDITION IO=1mA RLoad=1Ω Dropout Voltage (Note 1) VDROP - 250 - Line Regulation ∆VLINE IO=1mA, VIN=VOUT +1V or 5V - 1 5 mV Load Regulation (Note 2) ∆VLOAD IO=0mA to 300mA - 6 20 mV Ripple Rejection PSRR - 60 - dB IO=300mA VIN=VOUT+1V COUT=1uF, fRIPPLE = 120Hz mV Output Noise ∆n CBP=10nF, f=1KHz, VIN=5V - 0.4 - uV/√Hz Temperature Coefficient TC IOUT = 1mA, VIN = 5V - 50 - ppm/ oC Thermal Shutdown Temperature TSD - 160 - o Thermal Shutdown Hysteresis ∆TSD - 25 - o Shutdown Pin Current ISHDN - - 0.1 C C µA VREF - 1.2 - V Shutdown Pin Voltage (ON) VSHDN (ON) 1.4 - - V Shutdown Pin Voltage (OFF) VSHDN (OFF) - - 0.4 V - 300 - µs Noise Bypass Terminal Voltage Shutdown Exit Delay Time ∆T CBP=10nF, COUT=1uF, IO=30mA Note 1：The dropout voltage is defined as V IN-VOUT, which is measured when VOUT drop 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 300mA. 2 Advanced Power Electronics Corp. APE8800A PIN DESCRIPTIONS PIN SYMBOL PIN DESCRIPTION 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. The output supplies power to loads. The output capacitor is required to prevent output voltage from oscillation. VOUT The APE8800A 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 BP SHDN Common ground pin Reference Noise Bypass , the Bypass Capacitor > 1nF Chip Enable (Active High) BLOCK DIAGRAM Figure 2. Block Diagram of APE8800A 3 Advanced Power Electronics Corp. APE8800A APPLICATION INFORMATIO The APE8800A is a low dropout linear regulator that could provide 300mA output current at dropout voltage 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 Output & 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 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 30m Ω to 50m Ω ESR range between device outputs and ground for stability. The APE8800A 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. Protection Features In order to prevent overloading or thermal condition 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 overloading or over temperature condition. 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 x (VIN-VOUT). The power dissipation should be lower than the maximum power dissipation listed in “Absolute Maximum Ratings” section. Shutdown Operation The APE8800A 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. APE8800A TYPICAL PERFORMANCE CHARACTERISTICS Quiescent Current vs. Input Voltage Current Limit vs. Input Voltage Current Limit vs. Temperature Quiescent Current vs. Temperature Output Voltage vs. Temperature Dropout Voltage vs. Temperature 5 Advanced Power Electronics Corp. APE8800A TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Function Load Transient Response (VIN=5V, IOUT=150mA, CIN=1uF, COUT=1uF ) Line Transient Response (VIN=4~5V IOUT=10mA CIN=1uF COUT=1uF ) Shutdown Exit Delay Time (VIN=5V IOUT=1mA CIN=1uF COUT=1uF ) 6 Advanced Power Electronics Corp. APE8800A MARKING INFORMATION SOT-23-5L / TSOT-23-5L Part Number : F& (see Identification code) F&SSS Date Code : SSS Output Voltage Identification Code Output Voltage Identification Code 1.2V Fa 3.1V Fx 1.5V Fc 3.3V Fh 1.8V Fb 3.6V Fw 2.5V Fd 4.5V FM 2.8V Fe 5.0V Fv 3.0V Ff 7