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Numéro de sérieTPS7A4501
CategoriePower Management => Regulators => Linear Regulators => LDO (Low Drop Out)
DescriptionSingle Output LDO, 1.5A, Adj. (1.21V To 20V), Low Noise, Fast Transient Response
The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout, as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very low output noise, which makes them ideal for sensitive RF supply applications.
SociétéTexas Instruments, Inc.
DatasheetTélécharger TPS7A4501 datasheet
 
 
  • Description courte

  • FEATURES

    Optimized for Fast Transient Response Output Current: 1.5 A High Output Voltage Accuracy at 25°C Dropout Voltage: 300 mV Low Noise: 35 µVRMS to 100 kHz) High Ripple Rejection: dB 1-mA Quiescent Current No Protection Diodes Needed Controlled Quiescent Current in Dropout Fixed Output Voltages: 3.3 V Adjustable Output from 20 V Less Than 1-µA Quiescent Current in Shutdown Stable with 10-µF Output Capacitor Stable with Ceramic Capacitors Reverse-Battery Protection No Reverse Current Thermal Limiting

    DESCRIPTION

    The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than µA in shutdown. Quiescent current is well controlled; it does not rise in dropout, as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very low output noise, which makes them ideal for sensitive RF supply applications. Output voltage range is from 20 V. The TPS7A45xx regulators are stable with output capacitors as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR, as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages 3.3 V, and as an adjustable device with a 1.21-V reference voltage. The TPS7A45xx regulators are available in the 5-pin TO-263 (KTT) package.

    APPLICATIONS

    to 2.5-V Logic Power Supplies Post Regulator for Switching Supplies Wireless Infrastructure Radio-Frequency Systems

    Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD, PowerFLEX are trademarks of Texas Instruments.

    PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

    This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

    PRODUCT VOUT xx is nominal output voltage 1.5 V (ACTIVE), 1.8 V (ACTIVE), 2.5 V (ACTIVE), 3.3 V (ACTIVE), 01 = adjustable (ACTIVE) yyy is package designator (KTT) z is package quantity = 500)

    For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

    over operating virtual-junction temperature range (unless otherwise noted)

    IN OUT Input voltage range, VIN Input-to-output differential (2) SENSE ADJ SHDN Output short-circuit duration, tshort Maximum lead temperature (10-s soldering time), Tlead Operating virtual junction temperature range, TJ Storage temperature range, Tstg 20 V Indefinite to 150°C

    Stresses beyond 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-rated conditions for extended periods may affect device reliability. Absolute maximum input-to-output differential voltage cannot be achieved with all combinations of rated IN pin and OUT pin voltages. With the IN pin 20 V, the OUT pin may not be pulled below 0 V. The total measured voltage from IN to OUT can not exceed ±20 V.

    Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable ambient temperature PD = (TJ(max) ­ TA)/JA. Operating at the absolute maximum of 150°C can affect reliability. For packages with exposed thermal pads, such as QFN, PowerPADTM, and PowerFLEXTM, JP is defined as the thermal resistance between the die junction and the bottom of the exposed pad.

    Submit Documentation Feedback Product Folder Link(s): TPS7A45xx
    Over operating temperature range to 125°C (unless otherwise noted)

    PARAMETER VIN Minimum input voltage (3) (4) ILOAD 0.5 A ILOAD 1.5 A VIN 2.21 V, ILOAD mA TPS7A4515 VIN 20 V, ILOAD 1.5 A VIN 2.3 V, ILOAD mA TPS7A4518 VOUT Regulated output voltage (5) TPS7A4525 VIN 20 V, ILOAD 1.5 A VIN 3 V, ILOAD 1 mA VIN 20 V, ILOAD 1.5 A VIN 3.8 V, ILOAD mA TPS7A4533 VIN 20 V, ILOAD 1.5 A VIN 2.21 V, ILOAD 1 mA VADJ ADJ pin voltage (5) TPS7A4501 VIN 20 V, ILOAD 1.5 A VIN 20 V, ILOAD 1 mA VIN 20 V, ILOAD 1 mA VIN 20 V, ILOAD 1 mA VIN 20 V, ILOAD 1 mA VIN 20 V, ILOAD 1 mA VIN 2.5 V, ILOAD 1.5 A VIN 2.8 V, ILOAD 1.5 A VIN 3.5 V, ILOAD 1.5 A VIN 4.3 V, ILOAD 1.5 A TEST CONDITIONS TJ 25°C Full range 25°C Full range 25°C Full range 25°C Full range 25°C Full range 25°C Full range Full range Full range Full range Full range Full range 25°C Full range 25°C Full range 25°C Full range to +85°C Full range 25°C TPS7A4501

    The TPS7A45xx regulators are tested and specified under pulse load conditions such that TJ TA. They are fully tested = 25°C. Performance at ­40°C and 125°C is specified by design, characterization, and correlation with statistical process controls. Typical values represent the likely parametric nominal values determined at the time of characterization. Typical values depend on the application and configuration and may vary over time. Typical values are not ensured on production material. The TPS7A4501 is tested and specified for these conditions with the ADJ pin connected to the OUT pin. For the TPS7A4501, TPS7A4515 and TPS7A4518, dropout voltages are limited by the minimum input voltage specification under some output voltage/load conditions. Operating conditions are limited by maximum junction temperature. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be limited. When operating at maximum output current, the input voltage range must be limited. Submit Documentation Feedback Product Folder Link(s): TPS7A45xx 3