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LMS3635MQRNLRQ1 Datasheet(PDF) 1 Page - Texas Instruments |
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LMS3635MQRNLRQ1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 10 page 80% 82% 84% 86% 88% 90% 92% 94% 96% 98% 100% 0.001 0.01 0.1 1 10 Output Current (A) V IN=12 V IN=24 L1=10µH PVIN 1 PGND1 CBIAS VCC CBOOT SW EN AVIN FPWM RESET VOUT LMS3635/55 AGND 3 X 47µF 10µF 470nF PVIN 2 PGND2 SYNC FB NC VIN 3.5V to 36V 10µF 2.2µF 10µF 0.1µF 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. ADVANCE INFORMATION for pre-production products; subject to change without notice. LMS3655-Q1, LMS3635-Q1 SNAS701 – SEPTEMBER 2016 LMS3635/55-Q1, 3.5-A /5.5-A, 36-V Synchronous, 400-kHz, Step-Down Converter 1 1 Features 1 • AEC-Q100 Qualified for Automotive Applications – Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature – Device HBM Classification Level 2 – Device CDM Classification Level C6 • 96% Peak Efficiency While Converting 12 V to 5 V • Low EMI and Switch Noise – Minimized Switch Node Ringing – Pseudo-Random Spread Spectrum • 400-kHz (±10%) Fixed Switching Frequency • –40°C to +150°C Junction Temperature Range • External Frequency Synchronization • RESET Output With Internal Filter and 3-ms 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 • 0.35-V Dropout With 3.5-A Load at 25°C (Typical) • 15-µA Iq – Quiescent Current at No Load (Typical) • 3.5-A or 5.5-A Continuous Load Current • Output Voltage Options: 5 V, 3.3 V, and ADJ (1 V to 15 V) • ±2% Output Voltage Tolerance • 4-mm × 5-mm, 0.5-mm Pitch SON Package 2 Applications • Automotive Systems • Industrial Performance • In-Dash Instrumentation • Battery-Powered Applications 3 Description The LMS3635-Q1 and LMS3655-Q1 synchronous buck regulators are optimized for high performance applications, providing an output voltage of 3.3 V, 5 V, or an adjustable output of 1 V to 15 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads. Advanced high-speed circuitry allows the LMS3635- Q1 and LMS3655-Q1 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design. The LMS3655-Q1 enables a continuous load current of 5.5 A across the wide input voltage range. An open-drain reset output, with built-in 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. Device Information(1) DEVICE NAME PACKAGE BODY SIZE LMS3635-Q1 SON (22) 4.00 mm × 5.00 mm LMS3655-Q1 (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Circuit LMS3635 and LMS3655 Efficiency: VOUT = 5 V |
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