ACE525C 300mA High PSRR, Linear Regulator Description ACE525C series are a group of positive voltage output, low power consumption, low dropout voltage regulators. ACE525C can provide output value in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. ACE525C can also work under a wide input voltage ranging from 1.5V to 6V. ACE525C includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE525C 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 ±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: 35uA (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: ±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 1.4 1 ACE525C 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 1.4 2 ACE525C 300mA High PSRR, Linear Regulator Ordering information ACE525C 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 Block Diagram Recommended Work Conditions Item Min Max Unit Input Voltage Range 1.5 6 V Ambient Temperature -40 85 ℃ Electrical Characteristics ACE525C, For Arbitrary Output Voltage.(Test Conditions: Cin=1uF,Cout=1uF,T A=25C, unless otherwise specified.) Symbol Parameter Vin Input Voltage Vout Iout (Max.) Output Voltage Vout>1.5V Vout<=1.5V Maximun Output Current Conditions Min Vin=Set Vout+1V 1mA≤Iout≤30mA 1.5 Vout x0.98 Vout -0.03 300 Vin-Vout=1V Typ Max Vout 6 Vout x 1.02 Vout +0.03 Unit s V V mA VER 1.4 3 ACE525C 300mA High PSRR, Linear Regulator Iout=100mA 100 150 mV Iout=300mA Iout=40mA 2.8V≤Vin≤6V Vin=Set Vout+1V 1mA≤Iout≤300mA Vin=Set Vout+1V Vin=Set Vout+1V Vce=Vss 300 400 mV 0.05 0.2 %/V 50 80 mV 35 80 uA 0.1 1.0 uA Vdrop1 Dropout Voltage,Vout≥2.8V △Vout / △Vin x Vout Line Regulation △Vout /△Iout Load Regulation Iss Supply Current Istandby Supply Current (Srandby) △Vout / △T 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 en Output Noise V uVr ms BW=10Hz~100kHz mA 47 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 ACE525C Note: Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. Explanation： ACE525C series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. ACE525C can provide output value in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. ACE525C includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE525C 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±2%. VER 1.4 4 ACE525C 300mA High PSRR, Linear Regulator Typical Performance Characteristics (TA=25℃) VER 1.4 5 ACE525C 300mA High PSRR, Linear Regulator Typical Performance Characteristics VER 1.4 6 ACE525C 300mA High PSRR, Linear Regulator Packing Information SC-70-5 SOT-23-3L VER 1.4 7 ACE525C 300mA High PSRR, Linear Regulator Packing Information SOT-23-5 DFN1*1-4 VER 1.4 8 ACE525C 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 1.4 9