ACE555 300mA High PSRR, Linear Regulator Description ACE555 series are a group of positive voltage output, low power consumption, low dropout voltage regulators. ACE555 can provide output value in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. ACE555 can also work under a wide input voltage ranging from 1.5V to 6V. ACE555 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE555 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within ±1%、±2%. Features Input voltage range: 1.5~6V Output voltage range: 1.0V~4.5V (customized on command every 0.1V step) Low power consumption: 25uA (Typ.) Low output noise (47uVRMS) Shutdown mode: 0.1uA Low dropout voltage: 300mV@300mA (Typ.) High ripple rejection:70dB@1KHz (Typ.) Low temperature coefficient: ±100ppm/C Excellent line regulation: 0.05%/V Build-in chip enable circuit Highly accurate: ±1%、±2% Output current limit Fold-back output short circuit protection Application Power source for cellular phones and various kind of PCSs Battery Powered equipment Power Management of MP3, PDA, DSC, Mouse, PS2 Games Voltage Reference Regulation after Switching Power Typical Performance Characteristic: VER 1.1 1 ACE555 300mA High PSRR, Linear Regulator Absolute Maximum Ratings Parameter Symbol Max Unit Max Input voltage Power Dissipation SC-70-5 SOT-23-3L SOT-23-5 DFN1*1-4 Junction temperature VIN 8 V TJ 250 250 250 600 125 Storage temperature TS - 45 to 150 Output Current mW 300 Ambient Temperature TA O C O C mA O -40 to 85 C Note: Heat Sink Area of PCB for DFN1x1-4 is recommended at least 2.5mmx4mm. Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. Packaging Type SC-70-5 5 1 SOT-23-3L 4 2 3 3 SOT-23-5 5 1 2 1 DFN1*1-4 4 2 3 4 3 1 2 (Thermal Pad: Vss) SC-70-5 SOT-23-3L SOT-23-5 DFN1*1-4 Description Function 5 2 5 1 Vout Output pin 1 3 1 4 Vin Input pin 2 1 2 2 VSS Ground pin 3 3 3 CE Chip Enable pin 4 4 NC No Connection VER 1.1 2 ACE555 300mA High PSRR, Linear Regulator Ordering information ACE555 X XX XX + H Halogen - free Pb - free HN: SC-70-5 BM: SOT-23-3L BN: SOT-23-5 IN: DFN1*1-4 Output Voltage: 1.0V/1.5V/1.8V…..4.5V Reference Voltage accuracy : A : 1% B : 2% Block Diagram Recommended Work Conditions Item Min Max Unit Input Voltage Range 1.5 6 V Ambient Temperature -40 85 ℃ VER 1.1 3 ACE555 300mA High PSRR, Linear Regulator Electrical Characteristics ACE555, For Arbitrary Output Voltage.(Test Conditions: Cin=1uF,Cout=1uF,TA=25C, unless otherwise specified.) Symbol Parameter Vin Input Voltage Vout Vout>1.5V Output Voltage Vout<=1.5V Max Unit s 1.5 6 V Vin=Set Vout+1V 1mA≤Iout≤30mA Vout x0.98 Vout -0.03 Vout x 1.02 Vout +0.03 V Vin-Vout=1V 300 Conditions Min Typ Vout Iout (Max.) Maximun Output Current mA Vdrop1 Dropout Voltage,Vout≥2.8V ᇞVout / ᇞVin x Vout Line Regulation ᇞVout Load Regulation Iss Supply Current Vin=Set Vout+1V 25 Istandby Supply Current (Srandby) Vin=Set Vout+1V Vce=Vss 0.1 ᇞVout / ᇞT x Vout Output Voltage Temperature Coefficient Iout=30mA ±100 ppm /C PSRR Ripple Rejection F=1KHz, Ripple=0.5Vp-p Vin=Set Vout+1V 70 dB Ilim Current Limit 300 Vceh CE Input Voltage “H” 1.5 Vin V Vcel CE Input Voltage “L” 0 0.25 V en Output Noise Iout=100mA 100 150 mV Iout=300mA 300 400 mV 0.05 0.2 %/V 50 80 mV Iout=40mA 2.8V≤Vin≤6V Vin=Set Vout+1V 1mA≤Iout≤300mA BW=10Hz~100kHz uA 1.0 uA mA 47 uVr ms Note: Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=300mA. Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input voltage. Typical Application Circuit ACE555 Note: Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. VER 1.1 4 ACE555 300mA High PSRR, Linear Regulator Explanation： ACE555 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. ACE555 can provide output value in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. ACE555 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE555 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within±1%、±2%. Typical Performance Characteristics (TA=25℃) VER 1.1 5 ACE555 300mA High PSRR, Linear Regulator Typical Performance Characteristics VER 1.1 6 ACE555 300mA High PSRR, Linear Regulator VER 1.1 7 ACE555 300mA High PSRR, Linear Regulator Packing Information SC-70-5 SOT-23-3L VER 1.1 8 ACE555 300mA High PSRR, Linear Regulator Packing Information SOT-23-5 DFN1*1-4 VER 1.1 9 ACE555 300mA High PSRR, 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 1.1 10