Datenblatt-Suchmaschine für elektronische Bauteile |
|
LM20343 Datenblatt(PDF) 1 Page - Texas Instruments |
|
LM20343 Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 30 page LM20343 www.ti.com SNVS559A – MAY 2008 – REVISED AUGUST 2008 LM20343 36V, 3A Adjustable Frequency Synchronous Buck Regulator Check for Samples: LM20343 1 FEATURES DESCRIPTION The LM20343 is a full featured synchronous buck 2 • 4.5V to 36V Input Voltage Range regulator capable of delivering up to 3A of load • 3A Output Current, 5.2A Peak Current current. The current mode control loop is externally • 130 m Ω/110 mΩ Integrated Power MOSFETs compensated with only two components, offering both high performance and ease of use. The device is • 94% Peak Efficiency with Synchronous optimized to work over the input voltage range of Rectification 4.5V to 36V making it well suited for high voltage • 1.5% Feedback Voltage Accuracy systems. • Current Mode Control, Selectable The device features internal Over Voltage Protection Compensation (OVP) and Over Current Protection (OCP) circuits for • Resistor Programmed, 1MHz Capable increased system reliability. A precision Enable pin Oscillator and integrated UVLO allows the turn on of the device to be tightly controlled and sequenced. Startup inrush • Adjustable Output Voltage Down to 0.8V currents are limited by both an internally fixed and • Compatible with Pre-biased Loads externally adjustable soft-start circuit. Fault detection • Programmable Soft-start with External and supply sequencing are possible with the Capacitor integrated power good (PGOOD) circuit. • Precision Enable Pin with Hysteresis The frequency of this device can be adjusted from • OVP, UVLO Inputs and PGOOD Output 250 kHz to 1.0 MHz by connecting an external resistor from the RT pin to ground. • Internally Protected with Peak Current Limit, Thermal Shutdown and Restart The LM20343 is designed to work well in multi-rail power supply architectures. The output voltage of the • Accurate Current Limit Minimizes Inductor device can be configured to track a higher voltage rail Size using the SS/TRK pin. If the output of the LM20343 is • Non-linear Current Mode Slope Compensation pre-biased at startup it will not sink current to pull the • 20-Pin HTSSOP Exposed Pad Package output low until the internal soft-start ramp exceeds the voltage at the feedback pin. APPLICATIONS The LM20343 is offered in an exposed pad 20-pin • Simple to Design, High Efficiency Point of HTSSOP package that can be soldered to the PCB, Load Tegulation from a 4.5V to 36V Bus eliminating the need for bulky heatsinks. • High Performance DSPs, FPGAs, ASICs and Microprocessors • Communications Infrastructure, Automotive 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Ähnliche Teilenummer - LM20343_14 |
|
Ähnliche Beschreibung - LM20343_14 |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |