A7501 AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 1 - DESCRIPTION FEATURES The A7501 Series are VFM Step-Up DC-DC ICs with ultra ow supply current by CMOS process and suitable for use with battery-powered instruments. The A7501 IC consists of and oscillator, a VFM control circuit, a driver transistor (LX sw itch), a reference voltage unit, and error amplifier, resistors for voltage detection, and a LX switch protection circuit. A low ripple and high efficiency step -up DC -DC converter can be constructed of this A7501 IC with only three external components. A protection circuit turns off the built-in MOSFET when the voltage at the CONT pin exceeds the limit to prevent it from being damaged. A7501 with a fixed duty ratio of 75 % (Lower Output Voltage ) or 88% (Higher Output Voltage). A7501 is available in SOT-23, SOT-25 and SOT89-3 packages. Minimal Number of External Components, Only an Inductor (AiT -WSS0703-220M), a Diode (AiT-SM140A), and a Capacitor. Ultra Low Input Current: 6.5μA at no load 1.8V to 5.0V Output Voltage ±2% High Output Voltage Accuracy Low Ripple and Low Noise Low Start-Up Voltage, 0.9V at 1mA Duty ratio: 77 % Built -in fixed -type PFM controller Available in SOT-23, SOT-25 and SOT89-3 packages APPLICATION Power Source for Battery-Powered Equipment Power Source for Camera, Camcorder, VCT, PDA, Pager, Electronic Data Bank, Hand -Held Communication Equipment and Audio Equipment. Power Source for Applications which require higher voltage than that of batteries used in the appliances. ORDER INFORMATION Package Type Part Number SOT-23 SPQ: 3,000pcs/Reel A7501E3R-XX A7501E3VR-XX SOT-25 SPQ: 3,000pcs/Reel E5 A7501E5R-XXD A7501E5VR-XXD SOT89-3 SPQ: 1,000pcs/Reel K3 A7501K3R-XX A7501K3VR-XX Note XX: Output Voltage, 27=2.7V, 30=3.0V D: Pin Type R: Tape & Reel V: Halogen free Package AiT provides all RoHS products TYPICAL APPLICATION CIRCUIT
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 2 - PIN DESCRIPTION Top View Top View Top View Top View Pin # Symbol Function SOT-23 SOT-25 SOT89-3 A B 1 4 4 1 GND Ground 2 5 5 3 LX External Coil Connection 3 2 2 2 VOUT Output - 1 1 - EN Chip Enable - 3 - - NC No Connect - - 3 - EXT Connect External MOS
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 3 - ABSOLUTE MAXIMUM RATINGS VDD, Input Voltage VSS -0.3V～VSS+6.5V VOUT, Output Voltage VSS-0.3V～VSS+6.5V VCONT, Output Voltage VSS-0.3V～VSS+6.5V ILX, Output Current 1000mA PD, Power Dissipation SOT-23 250mW SOT-25 250mW SOT89-3 500mW TOPR, Operating Ambient Temperature -40℃～＋80℃ TSTG, Storage Ambient Temperature -40℃～＋125℃ Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 4 -
ELECTRICAL CHARACTERISTICS
TA=25℃, VIN=1.5V, VOUT=3.3V, unless otherwise noted Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VOUT VOUT(S) ×0.98 VOUT(S) VOUT(S) ×1.02 V Input Voltage VIN - - 6.5 Operation Start Voltage VST1 IOUT=1mA - 0.9 1.1 Active Current IACT VOUT＝Output voltage×0.9 - 40 55 μA Input Current Without Load ISS VOUT＝Output voltage×1.1 - 6.5 7.5 Line Regulation ΔVOUT1 IOUT=30mA - 0.22 0.4 Load Regulation ΔVOUT2 IOUT=10uA~100mA - 0.35 0.5 Output Voltage Temperature Coefficient ΔVOUT ΔTA× VOUT Maximum Oscillation Frequency fosc VOUT＝Output voltage×0.95 225 300 375 kHz Duty Ratio Duty VOUT＝Output voltage×0.95 70 77 84 % Efficiency EFFI - 88 - ％ NOTE: VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. fosc is the working frequency.
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 5 - TYPICAL PERFORMANCE CHARACTERISTICS 1. Quiescent Current vs. Input Voltage 2. Output Current Limit vs. Input Voltage 3. Output Voltage vs. Input Voltage 4. Efficiency vs. Output Current 5. Efficiency vs. Input Voltage 6. Quiescent Current vs. Temperature
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 6 - 7. Start Voltage vs. Temperature 8. Output Current Limit vs. Temperature 9. Maximum oscillation frequency vs. Temperature 10. Oscillation Signal Duty Cycle vs. Temperature 11. Output Voltage vs. Temperature 12. Load Regulation vs. Temperature
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 7 - 13. EN High Voltage vs. Temperature
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 8 - BLOCK DIAGRAM
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 9 -
PACKAGE INFORMATION
Dimension in SOT-23 Package (Unit: mm) Symbol Millimeters Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950 BSC 0.037 BSC e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8°
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 10 - Dimension in SOT-25 Package (Unit: mm) Symbol Millimeters Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950 BSC 0.037 BSC e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8°
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 11 - Dimension in SOT89-3 Package (Unit: mm) Symbol Millimeters Inches Min Max Min Max A 1.400 1.600 0.055 0.063 b 0.320 0.520 0.013 0.020 b1 0.400 0.580 0.016 0.023 c 0.350 0.400 0.014 0.017 D 4.400 4.600 0.173 0.181 D1 1.500 REF. 0.061 REF. E 2.300 2.600 0.091 0.102 E1 3.940 4.250 0.155 0.167 e 1.500 TYP 0.060 TYP e1 3.000 TYP 0.118 TYP L 0.900 1.200 0.035 0.047
AiT Semiconductor Inc. www.ait-ic.com A7501 DC-DC CONVERTER/BOOST(STEP-UP) 0.9V STARTUP , 1A VFM CONTROL ASYNCHRONOUS REV1.6 - MAR 2009 RELEASED, JUL 2020 UPDATED - - 12 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service without notice, and advises its customers to o btain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. AiT Semiconductor Inc. 's integrated circuit products are not designed, intended, authorized, or warranted to be suitable fo r use in life support applications, devices or systems or other critical applications. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of death, personal injury, or servere property, or environmental damage. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. AiT Semiconductor Inc . assumes to no liability to customer product des ign or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale.