Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR General Description Features The AP2120 series are positive voltage regulator ICs fabricated by CMOS process. Each of these ICs consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current limit circuit for current protection. · · · · The AP2120 series feature high supply voltage ripple rejection, low dropout voltage, low noise, high output voltage accuracy, and low current consumption which make them ideal for use in various battery-powered devices. The AP2120 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.2V, 3.3V and 5.0V versions. · · · · · · The AP2120 are available in standard SOT-23 package. AP2120 Low Dropout Voltage at IOUT=100mA: 200mV Typical (Except 1.2V, 1.3V and 1.5V Versions) Low Quiescent Current: 25µA Typical High Ripple Rejection: 65dB Typical （f=1kHz） Output Current: More Than 150mA (250mA Limit) Extremely Low Noise: 15µVrms@VOUT=1.2V, 1.3V, 1.5V (10Hz to 100kHz) Excellent Line Regulation: 4mV Typical Excellent Load Regulation: 12mV Typical High Output Voltage Accuracy: ±2% Excellent Line Transient Response and Load Transient Response Compatible with Low ESR Ceramic Capacitor (as Low as 1µF) Applications · · · · · · Mobile Phones, Cordless Phones Wireless Communication Equipment Portable Games Cameras, Video Recorders Sub-board Power Supplies for Telecom Equipment Battery Powered Equipment SOT-23 Figure 1. Package Types of AP2120 Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 1 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Pin Configuration N Package (SOT-23) VIN 3 1 2 GND VOUT Figure 2. Pin Configuration of AP2120 (Top View) Pin Description Pin Number Pin Name Function 1 GND Ground 2 VOUT Regulated Output Voltage 3 VIN Input Voltage Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 2 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Functional Block Diagram VIN 3 2 VOUT 1 GND VREF CURRENT LIMIT Figure 3. Functional Block Diagram of AP2120 Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 3 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Ordering Information AP2120 G1: Green Circuit Type TR: Tape and Reel 1.2: 1.3: 1.5: 1.8: 2.5: 2.8: 3.0: 3.2: 3.3: 5.0: Package N: SOT-23 Package SOT-23 Temperature Range -40 to 85oC Part Number Fixed Output 1.2V Fixed Output 1.3V Fixed Output 1.5V Fixed Output 1.8V Fixed Output 2.5V Fixed Output 2.8V Fixed Output 3.0V Fixed Output 3.2V Fixed Output 3.3V Fixed Output 5.0V Marking ID Packing Type AP2120N-1.2TRG1 GR4 Tape & Reel AP2120N-1.3TRG1 GR5 Tape & Reel AP2120N-1.5TRG1 GR6 Tape & Reel AP2120N-1.8TRG1 GR7 Tape & Reel AP2120N-2.5TRG1 GR8 Tape & Reel AP2120N-2.8TRG1 GR9 Tape & Reel AP2120N-3.0TRG1 GS2 Tape & Reel AP2120N-3.2TRG1 GS3 Tape & Reel AP2120N-3.3TRG1 GS4 Tape & Reel AP2120N-5.0TRG1 GS5 Tape & Reel BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green. Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 4 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Input Voltage VIN 6.5 V Enable Input Voltage VCE -0.3 to VIN+0.3 V Output Current IOUT 300 mA TJ 150 oC TSTG -65 to 150 oC TLEAD 260 Thermal Resistance (Note 2) θJA 250 oC/W ESD (Human Body Model) ESD 2000 V ESD (Machine Model) ESD 200 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. Note 2: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD(max)=(TJ(max) TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature. Recommended Operating Conditions Parameter Symbol Min Max Unit Input Voltage VIN 2 6 V TJ -40 85 oC Operating Junction Temperature Range Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 5 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics AP2120-1.2 Electrical Characteristics (VIN=2.2V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=2.2V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 1.176 1.2 1.224 V 6 V 150 mA Load Regulation VRLOAD VIN=2.2V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 2.2V≤VIN≤6V IOUT=30mA 4 16 mV IOUT=10mA 700 900 IOUT=100mA 700 900 IOUT=150mA 700 900 IOUT=200mA 700 900 VIN=2.2V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=2.2V 65 dB ±120 µV/oC ±100 ppm/oC Dropout Voltage Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient VDROP IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC, IOUT=0 10Hz ≤f≤100kHz 15 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 6 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-1.3 Electrical Characteristics (VIN=2.3V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=2.3V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 1.274 1.3 1.326 V 6 V 150 mA Load Regulation VRLOAD VIN=2.3V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 2.3V≤VIN≤6V IOUT=30mA 4 16 mV Dropout Voltage Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient VDROP IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=10mA 600 800 IOUT=100mA 600 800 IOUT=150mA 600 800 IOUT=200mA 600 800 VIN=2.3V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=2.3V 65 dB ±130 µV/oC ±100 ppm/oC IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC, IOUT=0 10Hz ≤f≤100kHz 15 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 7 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-1.5 Electrical Characteristics (VIN=2.5V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=2.5V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 1.47 1.5 1.53 V 6 V 150 mA Load Regulation VRLOAD VIN=2.5V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 2.3V≤VIN≤6V IOUT=30mA 4 16 mV IOUT=10mA 400 600 IOUT=100mA 400 600 IOUT=150mA 400 600 IOUT=200mA 400 600 VIN=2.5V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=2.5V 65 dB ±150 µV/oC ±100 ppm/oC Dropout Voltage Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient VDROP IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC, IOUT=0 10Hz ≤f≤100kHz 15 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 8 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-1.8 Electrical Characteristics (VIN=2.8V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=2.8V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 1.764 1.8 1.836 V 6 V 150 mA Load Regulation VRLOAD VIN=2.8V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 2.3V≤VIN≤6V IOUT=30mA 4 16 mV Dropout Voltage VDROP Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=10mA 20 40 IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=2.8V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=2.8V 65 dB ±180 µV/oC ±100 ppm/oC IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 9 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-2.5 Electrical Characteristics (VIN=3.5V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=3.5V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 2.45 2.5 2.55 V 6 V 150 mA Load Regulation VRLOAD VIN=3.5V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 3V≤VIN≤6V IOUT=30mA 4 16 mV IOUT=10mA 20 40 Dropout Voltage VDROP IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=3.5V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=3.5V 65 dB ±250 µV/oC ±100 ppm/oC Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 10 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-2.8 Electrical Characteristics (VIN=3.8V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=3.8V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 2.744 2.8 2.856 V 6 V 150 mA Load Regulation VRLOAD VIN=3.8V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 3.3V≤VIN≤6V IOUT=30mA 4 16 mV Dropout Voltage VDROP Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=10mA 20 40 IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=3.8V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=3.8V 65 dB ±280 µV/oC ±100 ppm/oC IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 11 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-3.0 Electrical Characteristics (VIN=4V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=4V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 2.94 3.0 3.06 V 6 V 150 mA Load Regulation VRLOAD VIN=4V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 3.5V≤VIN≤6V IOUT=30mA 4 16 mV IOUT=10mA 20 40 IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=4V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=4V 65 dB ±300 µV/oC ±100 ppm/oC Dropout Voltage Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient VDROP IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 12 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-3.2 Electrical Characteristics (VIN=4.2V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=4.2V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 3.136 3.2 3.264 V 6 V 150 mA Load Regulation VRLOAD VIN=4.2V 1mA≤ IOUT≤ 80mA 12 40 mV Line Regulation VRLINE 3.7V≤VIN≤6V IOUT=30mA 4 16 mV Dropout Voltage VDROP Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=10mA 20 40 IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=4.2V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=4.2V 65 dB ±320 µV/oC ±100 ppm/oC IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 13 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-3.3 Electrical Characteristics (VIN=4.3V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=4.3V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 3.234 3.3 3.366 V 6 V 150 mA Load Regulation VRLOAD VIN=4.3V 1mA≤ IOUT≤ 80mA 12 40 mV Line Regulation VRLINE 3.8V≤VIN≤6V IOUT=30mA 4 16 mV IOUT=10mA 20 40 Dropout Voltage VDROP IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=4.3V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=4.3V 65 dB ±330 µV/oC ±100 ppm/oC Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 14 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Electrical Characteristics (Continued) AP2120-5.0 Electrical Characteristics (VIN=6.0V, TJ=25oC, CIN=1µF, COUT=1µF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=6.0V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 4.9 5.0 5.1 V 6 V 150 mA Load Regulation VRLOAD VIN=4.3V 1mA≤ IOUT≤ 80mA 12 40 mV Line Regulation VRLINE 5.5V≤VIN≤6V IOUT=30mA 4 16 mV IOUT=10mA 20 40 Dropout Voltage VDROP IOUT=100mA 200 300 IOUT=150mA 300 500 VIN=6.0V, IOUT=0mA 25 50 Ripple 0.5Vp-p, f=1kHz VIN=6.0V 65 dB ±330 µV/oC ±100 ppm/oC Quiescent Current Power Supply Rejection Ratio Output Voltage Temperature Coefficient IQ PSRR ∆VOUT/∆T (∆VOUT/VOUT)/∆T IOUT=30mA mV µA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 µVrms Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 15 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Typical Performance Characteristics 2.535 2.5 2.530 2.525 Output Voltage (V) Output Voltage (V) 2.0 1.5 AP2120-2.5 o TC=-40 C 1.0 TC=25 C o TC=85 C 0.0 0.00 0.10 0.15 0.20 0.25 2.510 AP2120-2.5 IOUT=10mA 2.505 IOUT=50mA IOUT=100mA IOUT=150mA VIN=3.5V 2.495 VIN=3.5V 0.05 2.515 2.500 o 0.5 2.520 2.490 -40 0.30 -20 0 20 40 60 80 100 120 o Output Current (A) Case Temperature ( C) Figure 4. Output Voltage vs. Output Current Figure 5. Output Voltage vs. Case Temperature 35 AP2120-2.5 o TC=-40 C 55 30 o TC=25 C 50 Quiescent Current (µA) Quiescent Current (µA) 25 20 15 AP2120-2.5 o TC=-40 C 10 o TC=25 C 5 o o TC=85 C VIN=3.5V 45 40 35 30 TC=85 C IOUT=0 0 0 1 2 3 4 5 25 0.00 6 0.05 0.10 0.15 0.20 Output Current (A) Input Voltage (V) Figure 7. Quiescent Current vs. Output Current Figure 6. Quiescent Current vs. Input Voltage Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 16 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 50 400 45 350 40 300 Dropout Voltage (V) Quiescent Current (µA) Typical Performance Characteristics (Continued) 35 30 25 20 AP2120-2.5 VIN=3.5V 15 IOUT=0 10 -40 -20 0 20 40 60 80 100 AP2120-2.5 o TC=-40 C o TC=25 C o TC=85 C 250 200 150 100 50 0 0.00 120 o Case Temperature ( C) 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 Output Current (A) Figure 9. Dropout Voltage vs. Output Current Figure 8. Quiescent Current vs. Case Temperature IOUT(50mV/Div) 450 400 300 AP2120-2.5 100 50 0 250 200 50 AP2120-2.5 IOUT=10mA 150 100 IOUT=80mA IOUT=150mA 50 0 -40 VOUT (50mΩ /Div) Dropout Voltage (V) 350 150 -20 0 20 40 60 0 -50 -100 80 o Case Temperature ( C) Figure 11. Load Transient (IOUT=0 to 150mA) Figure 10. Dropout Voltage vs. Case Temperature Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 17 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Typical Performance Characteristics (Continued) VIN (1V/Div) AP2120-2.5 2 IOUT=10mA 1 AP2120-2.5 0 VOUT (50mV/Div) IOUT=150mA 50 0 -50 Figure 12. Line Transient (Condition:VIN=2.5V to 3.5,IOUT=10mA) Figure 13. PSRR vs. Frequency 3.5 VIN (0.5V/Div) AP2120-2.5 2.5 3.0 2.0 2.5 2.0 1.5 Output Voltage 1.0 1.5 0.5 1.0 0 0.5 VOUT(0.5V/Div) Input Voltage 3.0 0 Figure 14. Start-up Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 18 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Typical Application AP2120-2.5 VIN=3.5V VIN VIN VOUT=2.5V VOUT VOUT GND COUT 1µF CIN 1µF Note: Filter capacitors are required at the AP2120's input and output. 1µF capacitor is required at the input. The minimum output capacitance required for stability should be more than 1µF with ESR from 0.01Ω to 100Ω. Ceramic capacitors are recommended. Figure 15. Typical Application of AP2120 Nov. 2009 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 19 Data Sheet HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120 Mechanical Dimensions SOT-23 Nov. 2009 Rev. 1. 0 Unit: mm(inch) BCD Semiconductor Manufacturing Limited 20 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. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not assume assume any any responsibility responsibility for for use use of of any any its its products products for for any any particular purpose, particular purpose, nor nor does does BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited assume assume any any liability liability arising arising out out of of the the application application or or use use of any of any its its products products or or circuits. circuits. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not convey convey any any license license under under its its patent patent rights rights or or other rights other rights nor nor the the rights rights of of others. others. 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