A6303C AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 1 - DESCRIPTION FEATURES The A6303C series are highly precise, low noise positive voltage LDO regulators manufactured using CMOS processes. The A6303C performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The A6303C also compatible with low ESR ceramic capacitors which give added output stability. This stability can be maintained even during load fluctuations due to the excellent transient response of the series. The A6303C consumes only 0.01μA current in shutdown mode and has fast turn -on time (Typical 50μs). The other features include ultra low dropout voltage, high output accuracy, current limiting protect ion, and high ripple rejection ratio. The A6303C is available in SOT-23, SOT-25, SC70-5 and DFN4(1x1) packages Ultra-low Noise Ultra-Fast Response in Line/Load Transient 0.01μA Standby Current When Shutdown Low Dropout: 230mV@300mA Wide Operating Voltage Ranges: 2.2V to 5.5V Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1μF Output Capacitor Required for Stability High Power Supply Rejection Ratio Fast output discharge Available in SOT-23, SOT-25, SC70-5 and DFN4(1x1) packages APPLICATION Smart Phones, Mobile Phones, Cordless Phones Wireless communication equipment Portable games, Portable AV equipment Camera and Machine Vision Modules Battery-Powered Equipment Laptop, Palmtops, Notebook Computers Reference Voltage ORDERING INFORMATION TYPICAL APPLICATION Application hints: Output capacitor (C2≥ 2.2uF) is recommended in A6303C-1.5V and A6303C-1.8V application to assure the stability of circuit. Package Type Part Number SOT-23 SPQ: 3,000pcs/Reel E3 A6303CE3R-XX A6303CE3VR-XX SOT-25 SPQ: 3,000pcs/Reel E5 A6303CE5R-XX A6303CE5VR-XX SC70-5 SPQ: 3,000pcs/Reel C5 A6303CC5R-XX A6303CC5VR-XX DFN4(1x1) SPQ: 5,000pcs/Reel J4 A6303CJ4R-XX A6303CJ4VR-XX Note XX: Output Voltage 15=1.5V, 33=3.3V V: Halogen free Package R: Tape & Reel AiT provides all RoHS products
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 2 - PIN DESCTRIPTION Top View Top View Top View Top View Pin # Symbol Function SOT-23 SOT-25 SC70-5 DFN4(1x1) 1 2 2 GND Ground 2 5 1 VOUT Output Voltage 3 1 4 VIN Power Input Voltage - 3 3 EN Chip Enable Pin , This pin has an internal pull -down resistor - 4 - NC No Connection - - Exposed Pad The exposed pad should be connected to a large ground plane to maximize thermal performance.
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 3 - ABSOLUTE MAXIMUM RATING VIN, Input Supply Voltage -0.3V ~ +6V EN Pin Input Voltage -0.3V ~ +VIN Output Voltage -0.3V ~ VIN+0.3V Output Current 300mA Power Dissipation SOT-23 250mW SOT-25 250mW SC70-5 250mW DFN4(1x1) 600mW Maximum Junction Temperature 150°C Operating Temperature RangeNOTE1 -40°C ~ 85°C Storage Temperature Range -65°C ~ 125°C Lead Temperature (Soldering, 10s) 300°C Stresses beyond may cause permanent damage to the device. These are stress ratings only and functional operation of the devic e at these or any other conditions beyond those indic ated in the Electrical Characteristics are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. NOTE1: The A6303C is guaranteed to meet performance specifications from 0°C to 70°C. Specifications o ver the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. THERMAL RESISTANCENOTE2 Package θJA θJC SOT-25 250°C/W 130°C/W SC70-5 333°C/W 170°C/W NOTE2: Thermal Resistance is specified with approximately 1 square of 1 oz copper
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 4 - ELECTRICAL CHARACTERISTICSNOTE3 VIN=VOUT +1V, EN=VIN, CIN=COUT=1μF, TA=25℃,unless otherwise noted. Parameter Symbol Conditions Min Typ Max Unit Input Voltage VIN 2.2 - 5.5 V Output Voltage Accuracy ΔVOUT VIN=VOUT+1V, IOUT=1mA -2 - +2 % Current Limit ILIM RLOAD=1Ω 360 450 - mA Quiescent Current IQ VEN>1.2V, IOUT=0mA - 70 110 μA Dropout Voltage VDROP IOUT=200mA, VOUT=3.3V - 150 200 mV IOUT=300mA, VOUT=3.3V - 230 300 Line RegulationNOTE4 ΔVLINE VIN=VOUT+1V to 5.5V IOUT=1mA - 0.02 0.17 %/V Load RegulationNOTE5 ΔVLOAD 1mA<IOUT<300mA - 20 - mV Output Voltage Temperature CoefficientNOTE6 TCVOUT IOUT=1mA - ±60 - ppm/℃ Standby Current ISTBY VEN=GND, Shutdown - 0.01 1 μA EN Input Bias Current IIBSD VEN=GND or VIN - - 2 μA EN Input Threshold Logic Low VIL VIN=3V to 5.5V,Shutdown - - 0.4 V Logic High VIH VIN=3V to 5.5V,Start up 1.2 - - Output Noise Voltage eNO 10Hz to100kHz, IOUT=100mA - 150 - μVRMS Power Supply Rejection Ratio f=217Hz PSRR IOUT=10mA - -78 - dB f=1kHz - -71 - f=10kHz - -53 - Thermal Shutdown Temperature TSD Shutdown, Temp increasing - 170 - ℃ Thermal Shutdown Hysteresis TSDHY - 30 - ℃ NOTE3: Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization. NOTE4: Line regulation is calculated by ΔVLINE= |(VOUT1-VOUT2)/(ΔVINxVOUT(normal))|x100 Where VOUT1 is the output voltage when VIN=5.5V, and VOUT2 is the output voltage when VIN=4.3V, ΔVIN=1.2V, VOUT(normal)=3.3V NOTE5: Load regulation is calculated by ΔVLOAD= VOUT1-VOUT2 Where VOUT1 is the output voltage when IOUT=1mA, and VOUT2 is the output voltage when IOUT=300mA. NOTE6: The temperature coefficient is calculated by TCVOUT=ΔVOUT /(ΔTxVOUT)
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 5 - TYPICAL PERFORMANCE CHARACTERISTICS 1. Output Voltage vs. Temperature 2. Quiescent Current vs. Temperature 3. Dropout Voltage vs. Load Current 4. PSRR 5. EN Pin Shutdown Threshold vs. Temperature 6. Load Transient Response
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 6 - 7. Load Transient Response 8. Line Transient Response 9. Start up 10. EN Pin Shutdown Response
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 7 - BLOCK DIAGRAM
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 8 - APPLICATIONS INFORMATION Like any low-dropout regulator, the external capacitors used with the A6303C must be carefully selected for regulator stability and performance. Using a capacit or whose value is > 1μF on the A6303C input and the amount of capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line -transient response. The output capacitor must meet both requirements for minimum amount of capacitance and ESR in all LDOs application. The A6303C is designed specifically to work with low ESR ceramic output capacitor in space -saving and performance consideration. Using a ceramic capacitor whose value is at least 1μF with ESR is > 25mΩ on the A6303C output ensures stability. The A6303C still works well with output capacitor of other types due to the wide stable ESR range. Output capacitor of larger capacitance can reduce noise and improve load transient response, stability, and PSRR. The output capacitor should be located not more than 0.5 inch from the VOUT pin of the A6303C and returned to a clean analog ground. Enable Function The A6303C features an LDO regulator enable/ disable function. To assure the LDO regulator will switch on; the EN turn on control level must be greater than 1.2 volts. The LDO regulator will go into the shutdown mode when the voltage on the EN pin falls below 0.4 volts. For to protect the system, the A6303C have a qu ick discharge function. If the enable function is not needed in a specific application, it may be tied to VIN to keep the LDO regulator in a continuously on state. Thermal Considerations Thermal protection limits power dissipation in A6303C. When the oper ation junction temperature exceeds 170°C, the OTP circuit starts the thermal shutdown function turn the pass element off. The pass element turns on again after the junction temperature cools by 30°C. For continue operation, do not exceed absolute maximum operation junction temperature 125°C. The power dissipation definition in device is: PD(MAX) = ( TJ(MAX) − TA ) / θJA Where TJ(MAX) is the maximum operation junction temperature 125°C, TA is the ambient temperature and the θJA is the junction to ambient thermal resistance. For recommended operating conditions specification of A6303C, where T J(MAX) is the maximum junction temperature of the die (125°C) and T A is the maximum
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 9 - ambient temperature. The junction to ambient thermal resistance ( θJA is layout dependent) for SOT -25 package is 250°C/W, on standard JEDEC 51 -3 thermal test board. The maximum power dissipation at TA=25°C can be calculated by following formula: PD(MAX) = (125°C − 25°C) / 250 = 400mW (SOT-25) The maximum power dissipat ion depends on operating ambient temperature for fixed TJ(MAX) and thermal resistance θJA. It is also useful to calculate the junction of temperature of the A6303C under a set of specific conditions. In this example let the Input voltage V IN=3.3V, the outp ut current IO=300mA and the case temperature TA=40°C measured by a thermal couple during operation. The power dissipation for the VOUT=2.8V version of the A6303C can be calculated as: PD = (3.3V − 2.8V) × 300mA + 3.6V × 100uA =150mW And the junction temperature, TJ, can be calculated as follows: TJ = TA + PD × θJA = 40°C + 0.15W × 250°C/W For this operating condition, TJ is lower than the absolute maximum operating junction temperature,125°C, so it is safe to use the A6303C in this configuration. Layout considerations To improve ac performance such as PSRR, output noise, and transient response, it is recommended that the PCB be designed with separate ground planes for VIN and VOUT, with each ground plane connected only at the GND pin of the device.
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 10 -
PACKAGE INFORMATION
Dimension in SOT-23 (Unit: mm)
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 11 - Dimension in SOT-25 (Unit: mm) Symbol Millimeters Inches Min Max Min Max A 0.889 1.295 0.035 0.051 A1 0.000 0.152 0.000 0.006 B 1.397 1.803 0.055 0.071 b 0.356 0.559 0.014 0.022 C 2.591 2.997 0.102 0.118 D 2.692 3.099 0.106 0.122 e 0.838 1.041 0.033 0.041 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 12 - Dimension in SC70-5 (Unit: mm) Symbol Min Max Symbol Min Max A 0.80 1.10 E 1.80 2.40 A1 0 0.10 E1 1.15 1.35 A2 0.80 1.00 L 0.10 0.45 A3 0.47 0.57 L1 0.42 REF A4 0.33 0.43 L2 0.20 BSC b 0.15 0.30 θ 0° 30° c 0.10 0.25 θ1 4° 12° D 1.85 2.20 aaa 0.10 e 0.65 BSC bbb 0.10 e1 1.30 BSC
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 13 - Dimension in DFN4(1x1) (Unit: mm)
AiT Semiconductor Inc. www.ait-ic.com A6303C CMOS LOW DROPOUT REGULATOR (LDO) 300mA UL TRA-LOW NOISE, UL TRA-FAST RESPONSE REV1.2 - AUG 2018 RELEASED, FEB 2020 UPDATED - - 14 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifi cations, to discontinue any integrated circuit product or service without notice, and advises its customers to obtain 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 for 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 de ath, personal injury, or server 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 design or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale.