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LM10504 データシート(PDF) 5 Page - Texas Instruments |
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LM10504 データシート(HTML) 5 Page - Texas Instruments |
5 / 38 page LM10504 www.ti.com SNVS739E – DECEMBER 2011 – REVISED MARCH 2013 General Electrical Characteristics (1) (2) Unless otherwise noted, VIN = 5.0V where: VIN = VIN_B1 = VIN_B2 = VIN_B3. Limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire operating junction temperature range of −30°C ≤ TA = TJ ≤ +85°C. Symbol Parameter Conditions Min Typ Max Units IQ(DEVSLP) Quiescent supply current DevSLP = HIGH, no load 100 200 µA UNDER/OVERVOLTAGE LOCK OUT VUVLO_RISING 2.75 2.9 3.05 VUVLO_FALLING 2.45 2.6 2.75 V VOVLO_RISING 5.64 VOVLO_FALLING 5.54 DIGITAL INTERFACE VIL Logic input low 0.3*VIN_IO SPI_CS, SPI_DI, SPI_CLK, RESET, DevSLP VIH Logic input high 0.7*VIN_IO VIL Logic input low 0.3*VIN Vselect_B2, Vselect_B3 V VIH Logic input high 0.7*VIN VOL Logic output low 0.2*VIN_IO SPI_DO VOH Logic output high 0.8*VIN_IO SPI_CS, SPI_DI, SPI_CLK, −2 Vselect_B2, DevSLP IIL Input current, pin driven low µA Vselect_B3, RESET −5 SPI_CS, SPI_DI, SPI_CLK, 2 Vselect_B3, RESET IIH Input current, pin driven high µA Vselect_B2, DevSLP 5 fSPI_MAX SPI max frequency 10 MHz tRESET 2 Minimum pulse width (3) µsec tDEVSLP 2 (1) All limits are ensured by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested during production with TJ = 25°C. All hot and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) Capacitors: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) are used in setting electrical characteristics. (3) Specification ensured by design. Not tested during production. Buck 1 Electrical Characteristics (1) (2) (3) Unless otherwise noted, VIN = 5.0V where: VIN=VIN_B1 = VIN_B2 = VIN_B3. Limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire operating junction temperature range of −30°C ≤ TA = TJ ≤ +85°C. Symbol Parameter Conditions Min Typ Max Units IQ VIN DC bias current No Load, PFM Mode 15 50 µA Continuous maximum load current IOUT_MAX Buck 1 enabled, switching in PWM 1.6 A (4) (5) (6) IPEAK Peak switching current limit Buck 1 enabled, switching in PWM 1.9 2.1 2.6 A Peak efficiency η IOUT = 0.3A 90 % (4) (1) All limits are ensured by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested during production with TJ = 25°C. All hot and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) Capacitors: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) are used in setting electrical characteristics. (3) BUCK normal operation is ensured if VIN ≥ VOUT+1.0V. (4) Specification ensured by design. Not tested during production. (5) In applications where high power dissipation and/or poor thermal resistance is present the maximum ambient temperature may have to be derated. Maximum ambient temperature (TA-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP = +125°C), the maximum power dissipation of the device in the application (PD-MAX), and the junction-to-ambient thermal resistance of the part/package in the application ( θJA), as given by the following equation: TA-MAX = TJ-MAX-OP – (θJA × PD-MAX). (6) The amount of Absolute Maximum power dissipation allowed for the device depends on the ambient temperature and can be calculated using the formula: P = (TJ–TA)/θJA, where TJ is the junction temperature, TA is the ambient temperature, and θJA is the junction-to- ambient thermal resistance. θJA is highly application and board-layout dependent. Internal thermal shutdown circuitry protects the device from permanent damage. (See General Electrical Characteristics.) Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM10504 |
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同様の説明 - LM10504_15 |
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