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LM536253QRNLTQ1 bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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1 / 7 page L1=2.2µH PVIN 1 PGND1 CBIAS VCC CBOOT SW EN AVIN FPWM RESET VOUT LM53625/35 AGND 3 X 22µF 10µF 470nF PVIN 2 PGND2 SYNC FB NC VSUPPLY 10µF 2.2µF 10µF Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of development. Subject to change or discontinuance without notice. LM53625-Q1, LM53635-Q1 SNVSAA7 – DECEMBER 2015 LM53625/35-Q1, 2.5/3.5A, 36 V Wide-VINSynchronous, 2.1MHz, Automotive Step Down DC- DC Converter 1 1 Features 1 • Qualified for Automotive Applications • AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range – Device HBM Classification Level 2 – Device CDM Classification Level C5 • 4 mm x 5 mm, 0.5 mm Pitch SON Package with Wettable Flanks and 0.6 mm VIN Spacing • -40°C to 150°C Junction Temperature Range • Current Mode Control with Internal Compensation • 2.1MHz (±10%) Fixed Switching Frequency • Low EMI • Spread Spectrum as a Factory Option • Min OFF Time-80ns (maximum) • Min ON Time-60ns (maximum) • External Frequency Synchronization • RESET Output with Filter and 3ms Release Timer • Automatic Light Load Mode for Improved Efficiency • Pin Selectable Forced PWM Mode • Built in Compensation, Soft-start, Current Limit, Thermal Shutdown and UVLO • 3.5 V to 36 V Input Voltage with Transients up to 42 V • LM53625-Q1 = 2.5 A Maximum Load Current • LM53635-Q1 = 3.5 A Maximum Load Current • 91% Efficiency while Converting 13.5 V to 5 V, 3.5 A • 0.6 V Dropout at 3.5 A Load, 1.4 V @ 1.85MHz @ 105ºC TA • Output Voltage Options: 5 V, 3.3 V and Adjustable • ±1.5% Output Voltage Tolerance (over temperature) • 2-µA Shutdown Current (typical) • 15-µA Iq - Quiescent Current at no Load (Typical) with 3.3 V Typical 2 Applications • Automotive Telematics • Navigation Systems • In-Dash Instrumentation • Battery-Powered Applications 3 Description The LM53625-Q1/LM53635-Q1 synchronous buck regulator is optimized for automotive applications, providing an output voltage of 5 V, 3.3 V, or an adjustable output. Advanced high speed circuitry allows the LM53625-Q1/LM53635-Q1 to regulate from an input of 13.5 V to an output 3.3 V at a fixed frequency of 2.1MHz. Innovative architecture allows the device to regulate a 3.3 V output from an input voltage of only 3.5 V. All aspects of the LM53625- Q1/LM53635-Q1 are optimized for automotive and performance driven industrial customers. An input voltage range up to 36 V, with transient tolerance up to 42 V, eases input surge protection design. An open drain reset output, with filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space. Seamless transition between PWM and PFM modes, along with a quiescent current of only 15-µA for 3.3 V option, ensures high efficiency and superior transient response at all loads. Device Information(1) DEVICE NAME PACKAGE BODY SIZE LM53625-Q1 SON (22) 4 mm x 5 mm LM53635-Q1 (1) For all available packages, see the orderable addendum at the end of the datasheet. Typical Application Circuit Automotive Wide-VIN Buck Convertor, 3.5- V to 36 V input, available in 3.3 V, 5.0 V and Adjustable output. |
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