ACE521 250mA CMOS Low consumption Linear Regulator Description ACE521 series is a group of positive voltage output, low power consumption, low dropout voltage, three terminal regulator. It can provide 200mA output current when input / output voltage differential drops to 420mV( Vout=3.3V), And it also provides foldback short-circuit protection and output current limit function. The very low power consumption of ACE521（Iq=2.0uA）can greatly improve natural life of batteries. ACE521 can provide output value in the range of 1.1V~5.0V in 0.1V steps. It also can customized on command. ACE521 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE521 has well load transient response and good temperature characteristic, And it uses trimming technique to guarantee output voltage accuracy within±2%. Features Low Power Consumption:2.0uA（Typ.） Maximum Output Current:250mA Small Dropout Voltage 210mV@100mA (Vout=3.3V) 420mV@200mA (Vout=3.3V) Input Voltage Range:2V~16V Output Voltage Range:1.1V~5.0V (customized on command in 0.1V steps) Highly Accurate:±2%(±1% customized） Output Current Limit 330mA@Vout=3.3V Foldback Short‐circuit Current 56mA@Vout=3.3V Application Battery Powered equipment Power Management of MP3. PDA. DSC. Mouse. PS2 Games Reference Voltage Source Regulation after Switching Power Typical Application ACE521 Note: Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. Ceramic capacitor is recommended. VER 1.4 1 ACE521 250mA CMOS Low consumption Linear Regulator Electrical Characteristics Vout Voltage vs Load Current Absolute Maximum Ratings Parameter Symbol Max Input Voltage Power Dissipation SOT-23-3 SOT-23-5 SOT-89-3 Operating Junction temperature Storage temperature Ambient Temperature TJ TS TA Max Unit 20 V 250 250 500 125 mW O C - 45 ~ 150 O C -40 ~ 85 O C Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. VER 1.4 2 ACE521 250mA CMOS Low consumption Linear Regulator Packaging Type SOT-23-3 SOT-23-5 3 1 5 2 1 SOT-89-3 4 2 3 1 2 3 SOT-23-3 SOT-23-5 SOT-89-3(A) SOT-89-3(B) Description 1 2 1 2 GND 2 5 3 1 Vout 3 1 2 3 Vin 3.4 NC Ordering information ACE521 XX XX + H Halogen - free Pb - free BM : SOT-23-3 BN: SOT-23-5 AMA: SOT-89-3(A) AMB: SOT-89-3(B) Output Voltage：1.1V/1.5V…..5.5V Recommended Work Conditions Item Min Input Voltage Range Ambient Temperature -40 Max Unit 16 V +85 ℃ VER 1.4 3 ACE521 250mA CMOS Low consumption Linear Regulator Electrical Characteristics (Test Conditions: Cin=1uF, Cout=1uF,TA=25℃, unless otherwise specified.) Parameter Symbol Input Voltage VIN Output Voltage Maximum Output Current Input-Output Voltage Differential VOUT Line Regulation IOUT(Max.) Dropout Voltage ΔVOUT / ΔVIN•VOUT Load Regulation ΔVOUT Quiescent Current Output Voltage Temperature Coefficient Iq ΔVOUT / ΔT•VOUT Conditions Min Typ Vout*0.98 VIN-VOUT=1V Vout≦2.5V Vout≧2.5V IOUT=10mA 2V≦VIN≦16V VIN=Set Vout+1V 1mA≦IOUT≦100mA VIN=Set Vout+1V IOUT=100mA IOUT=10mA Max Units 16 V Vout*1.02 V 250 mA 600 300 1,000 600 mV 0.2 0.3 %/V 20 40 mV 2.0 5.0 uA 100 ppm/ ℃ Block Diagram Explanation ACE521 is a series of low dropout voltage and low power consumption three pins regulator. Its application circuit is very simple, which only needs two outside capacitors. It is composed of these modules: high accuracy voltage reference, current limit circuit, error amplifier, output driver and power transistor. Current Limit module can keep chip and power system away from danger when load current is more than 250mA. ACE521 uses trimming technique to assure the accuracy of output value within±2%, at the same time, temperature compensation is elaborately considered in this chip, which makes ACE521’s temperature coefficient within 100ppm/℃。 VER 1.4 4 ACE521 250mA CMOS Low consumption Linear Regulator Typical Performance Characteristics VER 1.4 5 ACE521 250mA CMOS Low consumption Linear Regulator Line transient response Vin=6~7V, Ch1-Vout, Ch3-Vin Line transient response Iout=1mA~100mA, Ch1-Vout, Ch4-Iout VER 1.4 6 ACE521 250mA CMOS Low consumption Linear Regulator Line transient response Iout=1mA~100mA, Ch1-Vout, Ch4-Iout VER 1.4 7 ACE521 250mA CMOS Low consumption Linear Regulator Packing Information SOT-23-3 SOT-23-5 VER 1.4 8 ACE521 250mA CMOS Low consumption Linear Regulator Packing Information SOT-89-3 VER 1.4 9 ACE521 250mA CMOS Low consumption Linear 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 1.4 10