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LM2830 データシート(PDF) 1 Page - Texas Instruments |
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LM2830 データシート(HTML) 1 Page - Texas Instruments |
1 / 37 page GND FB EN VIN SW VIN = 5V C1 R3 D1 L1 R2 R1 C2 C3 VO = 3.3V @ 1.0A LM2830 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2830, LM2830-Q1 SNVS454E – AUGUST 2006 – REVISED DECEMBER 2014 LM2830/-Q1 High-Frequency 1.0-A Load Step-Down DC-DC Regulator 1 Features 3 Description The LM2830 regulator is a monolithic, high- 1 • LM2830Z-Q1 and LM2830X-Q1 in the SOT-23 frequency, PWM step-down DC-DC converter in a 5- Package are Automotive-Grade Products that are pin SOT-23 and a 6-Pin WSON package. The device AEC-Q100 Grade 1 Qualified (–40°C to +125°C provides all the active functions to provide local DC- Operating Junction Temperature) DC conversion with fast transient response and • Space-Saving SOT-23 Package accurate regulation in the smallest possible PCB area. With a minimum of external components, the • Input Voltage Range of 3.0 V to 5.5 V LM2830 regulator is easy to use. The ability to drive • Output Voltage Range of 0.6 V to 4.5 V 1.0-A loads with an internal 130-m Ω PMOS switch • 1.0-A Output Current using state-of-the-art 0.5-µm BiCMOS technology • High Switching Frequencies results in the best power density available. The world- class control circuitry allows on-times as low as 30 – 1.6 MHz (LM2830X) ns, thus supporting exceptionally high frequency – 3.0 MHz (LM2830Z) conversion over the entire 3-V to 5.5-V input • 130-m Ω PMOS Switch operating range down to the minimum output voltage of 0.6 V. Switching frequency is internally set to 1.6 • 0.6-V, 2% Internal Voltage Reference MHz, or 3.0 MHz, allowing the use of extremely small • Internal Soft-Start surface-mount inductors and chip capacitors. Even • Current Mode, PWM Operation though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is • Thermal Shutdown included, featuring an ultra-low standby current of 30 • Overvoltage Protection nA. The LM2830 regulator uses current-mode control and internal compensation to provide high- 2 Applications performance regulation over a wide range of operating conditions. Additional features include • Local 5-V to Vcore Step-Down Converters internal soft-start circuitry to reduce inrush current, • Core Power in HDDs pulse-by-pulse current limit, thermal shutdown, and • Set-Top Boxes output overvoltage protection. • USB Powered Devices Device Information(1) • DSL Modems PART NUMBER PACKAGE BODY SIZE (NOM) • Automotive SOT (5) 2.90 mm × 1.60 mm LM2830 WSON (6) 3.00 mm × 3.00 mm LM2830-Q1 SOT (5) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 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. |
同様の部品番号 - LM2830_15 |
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同様の説明 - LM2830_15 |
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