Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR General Description Features The AP2128 Series are positive voltage regulator ICs fabricated by CMOS process. The AP2128 provides two kinds of output voltage operation modes for setting the output voltage. Fixed output voltage mode senses the output voltage on VOUT, adjustable output · · · · voltage mode needs two resistors as a voltage divider · · · · · · The AP2128 Series have features of low dropout voltage, low noise, high output voltage accuracy, and low current consumption which make them ideal for use in various battery-powered devices. AP2128 has 1.0V, 1.2V, 3.3V fixed voltage version and 0.8V to 4.5V adjustable voltage version. · · · AP2128 series are available in SOT-23-5 Package. AP2128 Wide Operating Voltage: 2.5V to 6V Low Dropout Voltage (3.3V only): 170mV@300mA High Output Voltage Accuracy: ±2% High Ripple Rejection: 65dB@ f=1kHz, 45dB@ f=10kHz Low Standby Current: 0.1µA Low Quiescent Current: 60µA Typical Low Output Noise: 60µVrms Short Current Limit: 50mA Over Temperature Protection Compatible with Low ESR Ceramic Capacitor: 1µF for CIN and COUT Excellent Line/Load Regulation Soft Start Time: 50µs Auto Discharge Resistance: RDS(ON)=60Ω Applications · · · Datacom Notebook Computers Mother Board SOT-23-5 Figure 1. Package Type of AP2128 Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 1 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Pin Configuration K Package (SOT-23-5) Shutdown 1 GND 2 VIN 3 5 ADJ/NC 4 VOUT Figure 2. Pin Configuration of AP2128 (Top View) Functional Block Diagram UVLO & Shutdown Logic SHUTDOWN VIN Foldback Current Limit Thermal Shutdown VOUT 3MΩ NC VREF GND Fixed Version Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 2 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Functional Block Diagram (Continued) UVLO & Shutdown Logic SHUTDOWN VIN Foldback Current Limit Thermal Shutdown VOUT 3MΩ ADJ VREF GND Adjustable Version Figure 3. Functional Block Diagram of AP2128 Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 3 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Ordering Information AP2128 G1: Green Circuit Type TR: Tape and Reel Package ADJ: ADJ Output 1.0: Fixed Output 1.0V 1.2: Fixed Output 1.2V 3.3: Fixed Output 3.3V K: SOT-23-5 Product AP2128 Package SOT-23-5 Temperature Range -40 to 85oC Part Number Marking ID Green Green Packing Type AP2128K- ADJTRG1 FAD Tape & Reel AP2128K-1.0TRG1 FAJ Tape & Reel AP2128K-1.2TRG1 FAK Tape & Reel AP2128K-3.3TRG1 FAL Tape & Reel BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green. Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 4 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Input Voltage VIN 6.5 V Shutdown Input Voltage VCE -0.3 to VIN+0.3 V Output Current IOUT 450 mA TJ 150 oC TSTG -65 to 150 oC TLEAD 260 Thermal Resistance RθJA 250 oC/W ESD (Human Body Model) ESD 6000 V ESD (Machine Model) ESD 300 V Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) o C Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Input Voltage VIN 2.5 6 V TJ -40 85 oC Operating Junction Temperature Range Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 5 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Electrical Characteristics (AP2128-ADJ, VIN min=2.5V, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Reference Voltage Input Voltage Maximum Output Current Symbol VREF Conditions VIN=2.5V 1mA≤IOUT≤300mA VIN Min Typ Max Unit 0.748 0.8 0.816 V 6 V 2.5 IOUT(MAX) 450 mA Load Regulation ∆VOUT /(∆IOUT*VOUT) VIN-VOUT=1V, 1mA≤IOUT≤300mA 0.6 %/A Line Regulation ∆VOUT /(∆VIN*VOUT) VOUT+0.5V≤VIN≤6V IOUT=30mA 0.06 %/V Quiescent Current Standby Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient VIN=VOUT+1V, IOUT=0mA 60 90 µA ISTD VIN=VOUT+1V, VSHUTDOWN in off mode 0.1 1.0 µA PSRR Ripple 1Vp-p VIN=VOUT+1V IQ (∆VOUT/VOUT) /∆T Output Current Limit ILIMIT Short Current Limit ISHORT Soft Start Time RMS Output Noise f=100Hz 65 dB f=1KHz 65 dB f=10KHz 45 dB ±100 ppm/oC 400 mA 50 mA 50 µs 60 µVrms IOUT=30mA, -40oC≤TJ≤85oC VOUT=0V tUP VNOISE o TA=25 C, 10Hz ≤f≤100kHz Shutdown "High" Voltage Shutdown input voltage "High" 1.5 6 V Shutdown "Low" Voltage Shutdown input voltage "Low" 0 0.4 V VOUT Discharge MOSFET RDS(ON) Shutdown input voltage "Low" Shutdown Pull Down Resistance 60 Ω 3 MΩ Thermal Shutdown 165 o Thermal Shutdown Hysteresis 30 o Jun. 2008 Rev. 1.1 C C BCD Semiconductor Manufacturing Limited 6 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Electrical Characteristics (Continued) (AP2128-1.0V/1.2V,VIN min. =2.5V, AP2128-3.3V, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions Min VIN=VOUT+1V 1mA≤IOUT≤300mA VIN Max Unit 98%* VOUT 102%* VOUT V 2.5 6 V IOUT(MAX) Typ 450 mA Load Regulation ∆VOUT /(∆IOUT*VOUT) VIN-VOUT=1V, 1mA≤IOUT≤300mA 0.6 %/A Line Regulation ∆VOUT /(∆VIN*VOUT) VOUT+0.5V≤VIN≤6V IOUT=30mA 0.06 %/V Dropout Voltage Quiescent Current Standby Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient VDROP IQ ISTD PSRR (∆VOUT/VOUT) /∆T VOUT=1.0V, IOUT=300mA 1400 1500 VOUT=1.2V, IOUT=300mA 1200 1300 VOUT=3.3V, IOUT=300mA 170 300 VIN=VOUT+1V, IOUT=0mA 60 90 µA VIN=VOUT+1V, VSHUTDOWN in off mode 0.1 1.0 µA Ripple 1Vp-p VIN=VOUT+1V mV f=100Hz 65 dB f=1KHz 65 dB f=10KHz 45 dB ±100 ppm/oC IOUT=30mA, -40oC≤TJ≤85oC Output Current Limit ILIMIT VIN-VOUT=1V, VOUT=0.98*VOUT 400 mA Short Current Limit ISHORT VOUT=0V 50 mA 50 µs 60 µVrms Soft Start Time RMS Output Noise tUP VNOISE TA=25oC, 10Hz ≤f≤100kHz Shutdown "High" Voltage Shutdown input voltage "High" 1.5 6 V Shutdown "Low" Voltage Shutdown input voltage "Low" 0 0.4 V VOUT Discharge MOSFET RDS(ON) Shutdown input voltage "Low" 60 Ω 3 MΩ Thermal Shutdown 165 oC Thermal Shutdown Hysteresis 30 oC Shutdown Pull Down Resistance Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 7 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Typical Performance Characteristics 240 3.5 1.0 220 T C=-40 C 3.0 200 0.8 T C=25 C 180 T C=125 C 2.5 0.7 Dropout Voltage (mV) Output (V)(V) OutputVoltge Voltage 0.9 0.6 2.0 0.5 1.5 0.4 o o Tc=-40 C TC=-40 C 0.3 1.0 o Tc=25 C TC=25 C o o T =125 C Tc=85 C C VIN=4.4V o 0.2 0.5 0.1 00 50 100 100 150 200 200 250 300 300 350 400400 o 160 140 120 100 80 60 40 20 Vin=2.5V, Vout=0.8V 0.0 0.0 o o 0 450 500500 50 100 Output Current(V) (mA) Input Voltage 250 300 70 120 115 TC=-40 C 68 TC=25 C 66 TC=85 C VIN=2.5V, VOUT=0.8V 64 o 110 o 105 IOUT=0 VIN=2.5V, VOUT=0.8V o 100 95 Quiescent Current (µA) Quiescent Current (µA) 200 Figure 5. Dropout Voltage vs. Output Current, VOUT=3.3V Figure 4. Output Voltage vs. Output Current 90 85 80 75 70 65 60 62 60 58 56 54 52 55 50 150 Output Current (mA) 0 50 100 150 200 250 50 -40 300 -20 0 20 40 60 80 100 120 o Case Temperature ( C) Output Current (mA) Figure 7. Quiescent Current vs. Case Temperature Figure 6. Quiescent Current vs. Output Current Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 8 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Typical Performance Characteristics (Continued) 80 0.807 V =2.5V, CIN=COUT=1uF IN IOUT=10mA, Vout=0.8V 0.806 60 Output Voltage (V) Quiescent Current (µA) 70 50 40 30 20 0.805 0.804 0.803 o TC=25 C VOUT=0.8V, IOUT=0 10 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.802 5.5 0.801 -40 6.0 -20 0 20 40 60 80 100 120 o Input Voltage (V) Case Temperature ( C) Figure 8. Quiescent Current vs. Input Voltage Figure 9. Output Voltage vs. Case Temperature 1.0 34 VIN=2.5V, VOUT=0.8V, CIN=COUT=1µF 0.9 0.8 0.7 Output Voltge (V) Short Current (mA) 32 30 28 0.6 0.5 0.4 0.3 TC=-40 C 0.2 TC=25 C 0.1 TC=85 C VOUT=0.8V o o o 26 -40 -20 0 20 40 60 80 100 0.0 120 o 0 1 2 3 4 5 6 7 8 Input Voltage (V) Case Temperature ( C) Figure 10. Short Current vs. Case Temperature Figure 11. Output Voltage vs. Input Voltage (IOUT=0mA) Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 9 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 1.0 2.0 0.9 1.8 0.8 1.6 0.7 1.4 Power Dissipation (W) Output Voltge (V) Typical Performance Characteristics (Continued) 0.6 0.5 0.4 o 0.3 TC=-40 C 0.2 TC=25 C o 0.0 0 1 2 3 4 5 1.2 1.0 0.8 0.6 0.4 o TC=85 C VOUT=0.8V 0.1 VOUT=0.8V No heatsink 0.2 0.0 -40 6 -20 0 20 40 60 80 100 120 o Input Voltage (V) Case Temperature( C) Figure 12. Output Voltage vs. Input Voltage (IOUT=300mA) Figure 13. Power Dissipation vs. Case Temperature IOUT IOUT VOUT VOUT Figure 14. Load Transient Figure 15. Load Transient (Conditions: CIN=COUT=1µF, VIN=2.5V, VOUT=0.8V) (Conditions: CIN=COUT=1µF, VIN=4.4V, VOUT=3.3V) Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 10 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Typical Performance Characteristics (Continued) VIN VIN VOUT VOUT Figure 16. Line Transient Figure 17. Line Transient (Conditions: IOUT=30mA, CIN=COUT=1µF, (Conditions: IOUT=30mA, CIN=COUT=1µF, VIN=2.5 to 3.5V, VOUT=0.8V) VIN=4 to 5V, VOUT=3.3V) VOUT VOUT VShutdown VShutdown Figure 19. Soft Start Time Figure 18. Soft Start Time (Conditions: IOUT=0mA, CIN=COUT=1µF, (Conditions: IOUT=0mA, CIN=COUT=1µF, VShutdown=0 to 2V, VOUT=0.8V) VShutdown=0 to 2V, VOUT=3.3V) Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 11 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Typical Performance Characteristics (Continued) 100 100 IOUT=10mA IOUT=300mA ripple=1Vpp, COUT=1µF, VOUT=0.8V 90 80 70 70 60 60 PSRR (dB) PSRR (dB) 80 50 40 50 40 30 30 20 20 10 10 0 0 100 1000 10000 IOUT=10mA IOUT=300mA ripple=1Vpp, COUT=1µF, VOUT=3.3V 90 100000 100 1000 10000 100000 Frequency (Hz) Frequency (Hz) Figure 21. PSRR vs. Frequency Figure 20. PSSR vs. Frequency Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 12 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Typical Application VIN VOUT VIN VOUT AP2128 Shutdown R1 ADJ R2 CIN 1µF COUT 1µF GND VOUT=0.8*(1+R1/R2) V VIN VOUT VIN VOUT AP2128 Shutdown CIN 1µF COUT 1µF GND VOUT=1.0, 1.2, 3.3V Figure 22. Typical Application of AP2128 Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 13 Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128 Mechanical Dimensions SOT-23-5 Unit: mm(inch) 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 0.100(0.004) 0.200(0.008) 2.950(0.116) 2.650(0.104) 2.820(0.111) 3.020(0.119) 0.200(0.008) 0.700(0.028) REF 0.300(0.012) 0.400(0.016) 0° 8° 1.800(0.071) 2.000(0.079) 1.250(0.049) 1.050(0.041) 0.950(0.037) TYP 0.000(0.000) 0.100(0.004) 1.050(0.041) 1.150(0.045) Jun. 2008 Rev. 1.1 BCD Semiconductor Manufacturing Limited 14 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. 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