ACE520 Dual 300mA High PSRR Linear Regulator Description ACE520 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 1.2V to 3.5V. Typical output noise is 47uVrms,and PSRR is 73dB at 100Hz. The ACE520 includes two independent logic-controlled shutdown inputs and allows the output of each regulator to be turned of independently. The ACE520 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. The ACE520 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 25uA operating supply current per LDO Low 47uVRMS output noise Standby Mode: 0.1uA Low 160mV dropout at 300mA load 73dB PSRR at 100Hz Excellent Line regulation: 0.05%/V Independent Shutdown controls 1.2V to 3.5V 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 1.4 1 ACE520 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 ACE520 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) R:3.0V(Output1),3.0V(Output2) C:1.5V(Output1),3.0V(Output2) S:3.0V(Output1),3.3V(Output2) D:1.5V(Output1),3.3V(Output2) T:3.3V(Output1),1.8V(Output2) E:1.5V(Output1),4.0V(Output2) U:3.3V(Output1),3.3V(Output2) G:1.8V(Output1),2.5V(Output2) Y: 2.8V(Output1),3.3V(Output2) H:1.8V(Output1),2.8V(Output2) Z:3.3V(Output1),3.3V(Output2) I: 1.8V(Output1),3.0V(Output2) a:1.2V(Output1),2.5V(Output2) J:1.8V(Output1),3.3V(Output2) b:2.8V(Output1),1.2V(Output2) M:2.8V(Output1),1.8V(Output2) c:2.8V(Output1),1.3V(Output2) O:2.8V(Output1),2.8V(Output2) d:2.5V(Output1),2.8V(Output2) P:2.8V(Output1),3.0V(Output2) e:2.5V(Output1),3.3V(Output2) Q:3.0V(Output1),2.5V(Output2) f:2.8V(Output1),3.3V(Output2) g: 1.3V(Output1),2.8V(Output2) VER 1.4 2 ACE520 Dual 300mA High PSRR Linear Regulator Block Diagram Explanation ACE520 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 3.5V. It also can be customized on command. ACE520 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE520 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 1.4 3 ACE520 Dual 300mA High PSRR Linear Regulator Electrical Characteristics (Test Conditions: C1=1uF, Cout=3.3uF,TA=25℃, unless otherwise specified.) ACE520, 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 Load Regulation ΔVOUT / ΔVIN•VOUT ΔVOUT / ΔIOUT 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 50 80 Iout=300mA Iout=40mA 2.8V≦Vin≦6V Vin=Set Vout+1V 1mA≦Iout≦300mA 160 220 0.05 0.2 %/V 30 50 mA 50 100 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 500 mA 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 Typical Application Circuit Note: Input capacitor(Cin=1uF) and Output capacitor(Cout=1uF/3.3uF) are recommended in all application circuit. VER 1.4 4 ACE520 Dual 300mA High PSRR Linear Regulator Electrical Characteristics PSRR Freq (KHz) Typical Performance Characteristics Output Voltage vs. Output Current (with output short protection) Current limit vs. Vout Iload (mA) Output Voltage vs. Input Voltage Line Regulation Vin (V) VER 1.4 5 ACE520 Dual 300mA High PSRR Linear Regulator Dropout Voltage vs. Output Current Dropout & Iout Iout(mA) Ripple rejection vs. Frequency PSRR Freq (KHz) Line transient response Cin=Cout=1uF Iout=25mA Vout=3.3V VER 1.4 6 ACE520 Dual 300mA High PSRR Linear Regulator Load transient response Cin=Cout=1uF Vout=4.5V Vout=3.3V Start up from EN Shut down from EN VER 1.4 7 ACE520 Dual 300mA High PSRR Linear Regulator Packing Information SOT-23-6 VER 1.4 8 ACE520 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 1.4 9