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LM2734-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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LM2734-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 36 page LM2734 VIN VIN EN BOOST SW FB GND VOUT C3 L1 C1 C2 R1 R2 D1 D2 ON OFF Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2734Z, LM2734Z-Q1 SNVS334F – JANUARY 2005 – REVISED JANUARY 2016 LM2734Z/-Q1 Thin SOT 1-A Load Step-Down DC-DC Regulator 1 Features 3 Description The LM2734Z regulator is a monolithic, high- 1 • Qualified for Automotive Applications frequency, PWM step-down DC–DC converter • AEC-Q100 Qualified With the Following Results: assembled in a thick 6-pin SOT and a WSON non- – Device Temperature Grade 1: –40°C to 125°C pullback package. The device provides all the active Ambient Operating Temperature Range functions to provide local DC–DC conversion with fast transient response and accurate regulation in the – Device HBM ESD Classification Level 2 smallest possible PCB area. – Device CDM ESD Classification Level C6 With a minimum of external components and online • 6-pin SOT Package, or 6-Pin WSON Package design support through WEBENCH™, the LM2734Z • 3.0-V to 20-V Input Voltage Range is easy to use. The ability to drive 1-A loads with an • 0.8-V to 18-V Output Voltage Range internal 300-m Ω NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power • 1-A Output Current density available. The world class control circuitry • 3-MHz Switching Frequency allows for ON-times as low as 13 ns, thus supporting • 300-m Ω NMOS Switch exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the • 30-nA Shutdown Current minimum output voltage of 0.8 V. Switching frequency • 0.8-V, 2% Internal Voltage Reference is internally set to 3 MHz, allowing the use of • Internal Soft-Start extremely small surface mount inductors and chip • Current-Mode, PWM Operation capacitors. Even though the operating frequency is very high, efficiencies up to 85% are easy to achieve. • Thermal Shutdown External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734Z uses current- 2 Applications mode control and internal compensation to provide • DSL Modems high-performance regulation over a wide range of operating conditions. Additional features include • Local Point of Load Regulation internal soft-start circuitry to reduce inrush current, • Battery-Powered Devices pulse-by-pulse current limit, thermal shutdown, and • USB-Powered Devices output overvoltage protection. • Automotive Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) WSON (6) 3.00 mm × 3.00 mm LM2734Z SOT (6) 1.60 mm × 2.90 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Circuit Efficiency vs Load Current 1 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. PRODUCTION DATA. |
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