ACE520C Dual 300mA High PSRR Linear Regulator Description ACE520C dual, low-noise, low-dropout regulator delivers at least 300mA of continuous output current. The output voltage for each regulator is set independently by trimming. Output voltages are selectable in 100mV steps within a range of 1.0V to 4.5V. Typical output noise is 47uVrms,and PSRR is 73dB at 100Hz. The ACE520C includes two independent logic-controlled shutdown inputs and allows the output of each regulator to be turned of independently. The ACE520C includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. The ACE520C 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 Two low dropout voltage regulators 300mA output current for each LDO 35uA operating supply current per LDO Low 47uVRMS output noise Standby Mode: 0.1uA Low 300mV dropout at 300mA load 73dB PSRR at 100Hz Excellent Line regulation: 0.05%/V Independent Shutdown controls 1.0V to 4.5V Factory-Preset Output Output Current Limit Highly Accurate: ±2% (±1% customized) Application Cellular phones Cordless phones and radio communication equipment Battery Powered equipment Notebook and hand-ole equipment Wireless LAN GPS receivers Absolute Maximum Ratings Parameter Symbol Max Unit Input voltage Power Dissipation SOT-23-6 Junction temperature VIN 8 V mW TJ 250 125 Storage temperature Ambient Temperature TS TA O C - 45 to 150 O C -40 to 85 O C Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. VER 1.5 1 ACE520C Dual 300mA High PSRR Linear Regulator Packaging Type SOT-23-6 SOT-23-6(D) SOT-23-6(E) Description 6 1 5 2 4 3 Function 6 6 Vout1 Output 1 pin 2 5 Vdd Input pin 4 1 Vout2 Output 2 pin 3 3 CE2 Chip Enable pin2 5 2 GND Ground pin 1 4 CE1 Chip Enable pin1 Ordering information ACE520C X XXX + H Halogen - free Pb - free DGM : SOT-23-6(D) EGM : SOT-23-6(E) Output Voltage： B:1.5V(Output1),2.8V(Output2) S:3.0V(Output1),3.3V(Output2) C:1.5V(Output1),3.0V(Output2) T:3.3V(Output1),1.8V(Output2) D:1.5V(Output1),3.3V(Output2) U:3.3V(Output1),3.3V(Output2) E:1.5V(Output1),4.0V(Output2) Y:2.8V(Output1),3.3V(Output2) G:1.8V(Output1),2.5V(Output2) a:1.2V(Output1),2.5V(Output2) H:1.8V(Output1),2.8V(Output2) b:2.8V(Output1),1.2V(Output2) I: 1.8V(Output1),3.0V(Output2) c:2.8V(Output1),1.3V(Output2) J:1.8V(Output1),3.3V(Output2) d:2.5V(Output1),2.8V(Output2) M:2.8V(Output1),1.8V(Output2) e:2.5V(Output1),3.3V(Output2) O:2.8V(Output1),2.8V(Output2) g: 1.3V(Output1),2.8V(Output2) P:2.8V(Output1),3.0V(Output2) x: 2.8V(Output1),1.5V(Output2) Q:3.0V(Output1),2.5V(Output2) h: 3.3V(Output1),2.8V(Output2) R:3.0V(Output1),3.0V(Output2) VER 1.5 2 ACE520C Dual 300mA High PSRR Linear Regulator Block Diagram Explanation ACE520C series are highly accurate, dual, low noise, CMOS low dropout voltage regulators. The output voltage for each regulator is set independently by trimming. Voltages are selectable in 100mV steps within a range of 1.2V to 4.5V. It also can be customized on command. ACE520C includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE520C 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%. Recommended Work Conditions Item Min Max Unit Input Voltage Range 6 V 85 ℃ Ambient Temperature -40 VER 1.5 3 ACE520C Dual 300mA High PSRR Linear Regulator Electrical Characteristics (Test Conditions: C1=1uF, Cout=3.3uF,TA=25℃, unless otherwise specified.) ACE520C, For arbitrary output voltage Parameter Symbol Conditions Min Input Voltage VIN Output Voltage VOUT Vin=Set Vout+1V 1mA≦Iout≦30mA Vout x0.98 Maximum Output Current IOUT(Max.) Vin-Vout=1V 300 Dropout Voltage, Vout≧2.8V Vdrop Line Regulation ΔVOUT / ΔVIN•VOUT Load Regulation ΔVOUT Supply Current Iss Supply Current (Srandby) Istandby Output Voltage Temperature Coefficiency ΔVOUT / ΔT•VOUT Typ Vout1 Max Units 6 Vout x1.02 V V mA Iout=100mA 100 150 Iout=300mA Iout=40mA 2.8V≦Vin≦6V Vin=Set Vout+1V 1mA≦Iout≦300mA 300 400 0.05 0.2 %/V 50 80 mV 35 800 uA 0.1 1.0 uA Vin=Set Vout+1V Vin=Set Vout+1V Vce=Gnd Iout=30mA F=100Hz Ripple=0.5Vp-p Vin=Set Vout+1V Vout=0V mV ±100 ppm/℃ 70 dB Ripple Rejection PSRR Short Current Limit Llim CE Input Voltage “H” Vceh 1.5 Vin V CE Input Voltage “L” Vcel 0 0.25 V Output Noise en BW=10Hz~100kHz 47 uVrms Discharge Resistor Rdischarge CE=0V, Vout=3.0V 1.5K Ω CE pin pull down resistor Rcepd CE=Vin=5V 500K Ω 300 mA Typical Application Circuit Note: Input capacitor(Cin=1uF) and Output capacitor(Cout=1uF/3.3uF) are recommended in all application circuit. VER 1.5 4 ACE520C Dual 300mA High PSRR Linear Regulator Electrical Characteristics Line Regulation (Iout=0mA) Typical Performance Characteristics(TA=25℃) VER 1.5 5 ACE520C Dual 300mA High PSRR Linear Regulator Typical Performance Characteristics(TA=25℃) VER 1.5 6 ACE520C Dual 300mA High PSRR Linear Regulator Packing Information SOT-23-6 VER 1.5 7 ACE520C Dual 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 1.5 8