Technology ACE511 500mA LDO Linear Voltage Regulator Description The ACE511 series is a low-drop-out ( LDO ) linear regulator. The devices have been optimized for applications where fast transient response and minimum input voltages are critical. At light loads the typical dropout voltage is 10mV, and at full load the maximum dropout voltage is less than 500mV. The internal over-current protection and thermal protection ,makes the device extremely easy to use in a wide range of applications. Features • • • • • Low dropout performance Output current of 500mA typical Thermal shutdown protection Fixed 1.5V/1.8V/2.5V/2.8V/3.0V/3.3V/3.6V output voltages available SOT-89-3, and SOT-23-3 packages available Application • • • • • Active SCSI terminators Battery chargers High efficiency linear regulators Wireless communication systems Digital camera Absolute Maximum Ratings Parameter Symbol Max Unit Input supply voltage Thermal resistance junction to ambient SOT-89-3 SOT-23-3 Junction temperature Storage temperature range Lead temperature (soldering) 10sec VIN 6 V θJA TJ TSTG TLEAD O C/W 180 230 O 150 C O - 10 to 150 C O 260 C Note : Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. VER 1.2 1 Technology ACE511 500mA LDO Linear Voltage Regulator Packaging Type SOT-89-3 ACE5111XXAM+ 1 2 3 ACE5112XXAM+ 1 VOUT 1 GND 2 GND 2 VIN 3 VIN 3 VOUT SOT-23-3 3 ACE5111XXBM+ 1 2 ACE5112XXBM+ 1 VOUT 1 GND 2 VIN 2 VOUT 3 GND 3 VIN Ordering information Selection Guide ACE511 X XX XX + H Halogen - free Pb - free AM : SOT-89-3 BM : SOT-23-3 Output Voltage： 1.5V/1.8V/2.5V/2.8V/3.0V/3.3V/3.6V Pin VER 1.2 2 Technology ACE511 500mA LDO Linear Voltage Regulator Power Dissipation Table Package AM BM θJA ( C /W ) 180 230 O TA≤ 25 OC Power rating(mW) 694 543 TA=70 OC Power rating(mW) 444 348 TA= 85 OC Power rating (mW) 361 283 Note: 1.Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into Thermal shutdown. 2.TJ: Junction Temperature Calculation TJ = TA + ( PD x θJA ) The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no Ambient airflow. 3.θJA : Thermal Resistance-Junction to Ambient, DF: Derating factor, Po: Power consumption Recommended Operating Conditions Parameter Symbol Operating Conditions Min. Input Voltage VIN 2.8 Load Current (with adequate heat sinking) IO 5 Junction temperature Range TJ Typ. Max. 5.5 Unit V mA 125 O C VER 1.2 3 Technology ACE511 500mA LDO Linear Voltage Regulator Electrical Characteristics Operating Conditions: VIN = 5V, IOUT =10mA; TJ=25 ℃,unless otherwise specified.(COUT=2.2uF, ,CIN=2.2 uF) Symbol Test Conditions Min Output Voltage VOUT ACE511-1.5 (VIN=3.3V) ACE511-1.8 (VIN=3.3V) ACE511-2.5 ACE511-2.8 ACE511-3.0 ACE511-3.3 ACE511-3.6 1.470 1.764 2.450 2.744 2.940 3.234 3.528 Line Regulation VSR VIN=(VOUT+1)V to 5.5V Load Regulation (2) VLR Ground Current IGND Dropout Voltage (3) Parameter Typ Max 1.5 1.8 2.5 2.8 3.0 3.3 3.6 Unit 1.530 1.836 2.550 2.856 3.060 3.366 3.672 V 1 % 1 1.5 % IOUT=10mA 65 uA VD IOUT=500mA 0.8 V Current Limit ILIMIT VOUT=0V 0.7 A Output Voltage Temperature Coefficient TC Note 1 50 ppm/℃ Thermal Protection TPRO Thermal protection temperature Protection Hysterisys 150 20 RMS Output Noise VN TA=25 OC,,10HZ ≤f≤10KHZ, 0.003 %/VO Ripple Rejection Ratio PSRR f = 120Hz, 51 dB VIN=(VOUT+1)V IOUT=10~250mA IOUT=10~500mA O C, Notes: 1. Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range. 2. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 100μA to 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. 3. Dropout voltages is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. VER 1.2 4 Technology Typical ACE511 500mA LDO Linear Voltage Regulator Applications Fix Voltage Regulator: ACE511X-XX VIN Vin Vout VOUT GND +1uF Cin +1uF Cout Application Note 1.Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range. Load Regulator Load transient response Output Current (mA) Quiescent Current vs IOUT Time (250us/Div) Output Current (mA) VER 1.2 5 Technology ACE511 500mA LDO Linear Voltage Regulator Packing Information VER 1.2 6 Technology ACE511 500mA LDO Linear Voltage Regulator Packing Information VER 1.2 7 Technology ACE511 500mA LDO Linear Voltage Regulator Notes ACE does not assume any responsibility for use as critical components in life support devices or systems without the express written approval of the president and general counsel of ACE Electronics Co., LTD. As sued herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ACE Technology Co., LTD. http://www.ace-ele.com/ VER 1.2 8