HOME在庫検索>在庫情報

部品型式

LT1171CQ

製品説明
仕様・特性

LT1 170/LT1 171/LT1172 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators U FEATURES s s s s s s s s s s s DESCRIPTIO Wide Input Voltage Range: 3V to 60V Low Quiescent Current: 6mA Internal 5A Switch (2.5A for LT1171, 1.25A for LT1172) Shutdown Mode Draws Only 50µA Supply Current Very Few External Parts Required Self-Protected Against Overloads Operates in Nearly All Switching Topologies Flyback-Regulated Mode Has Fully Floating Outputs Comes in Standard 5-Pin Packages LT1172 Available in 8-Pin MiniDIP and Surface Mount Packages Can Be Externally Synchronized U APPLICATIO S s s s s s Logic Supply 5V at 10A 5V Logic to ±15V Op Amp Supply Battery Upconverter Power Inverter (+ to –) or (– to +) Fully Floating Multiple Outputs USER NOTE: This data sheet is only intended to provide specifications, graphs, and a general functional description of the LT1170/LT1171/LT1172. Application circuits are included to show the capability of the LT1170/LT1171/LT1172. A complete design manual (AN19) should be obtained to assist in developing new designs. This manual contains a comprehensive discussion of both the LT1070 and the external components used with it, as well as complete formulas for calculating the values of these components. The manual can also be used for the LT1170/LT1171/LT1172 by factoring in the higher frequency. A CAD design program called SwitcherCADTM is also available. The LT®1170/LT1171/LT1172 are monolithic high power switching regulators. They can be operated in all standard switching configurations including buck, boost, flyback, forward, inverting and “Cuk.” A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry. Integration of all functions allows the LT1170/LT1171/LT1172 to be built in a standard 5-pin TO-3 or TO-220 power package as well as the 8-pin packages (LT1172). This makes them extremely easy to use and provides “bust proof” operation similar to that obtained with 3-pin linear regulators. The LT1170/LT1171/LT1172 operate with supply voltages from 3V to 60V, and draw only 6mA quiescent current. They can deliver load power up to 100W with no external power devices. By utilizing current-mode switching techniques, they provide excellent AC and DC load and line regulation. The LT1170/LT1171/LT1172 have many unique features not found even on the vastly more difficult to use low power control chips presently available. They use adaptive antisat switch drive to allow very wide ranging load currents with no loss in efficiency. An externally activated shutdown mode reduces total supply current to 50µA typically for standby operation. , LTC and LT are registered trademarks of Linear Technology Corporation. SwitcherCAD is a trademark of Linear Technology Corporation. U TYPICAL APPLICATIO Boost Converter (5V to 12V) 5V Maximum Output Power* L1** 50µH L2 10µH OUTPUT FILTER 100 * ROUGH GUIDE ONLY. BUCK MODE POUT = (5A)(VOUT) SPECIAL TOPOLOGIES DELIVER MORE POWER. ** DIVIDE VERTICAL POWER SCALE BY TWO FOR LT1171, BY FOUR FOR LT1172. LT1170 VSW + LT1170 C3* 100µF + C2 1000µF 80 R1 10.7k 1% 12V 1A FB GND VC R3 1k C1 1µF *REQUIRED IF INPUT LEADS ≥ 2" ** COILTRONICS 50-2-52 PULSE ENGINEERING 92114 R2 1.24k 1% POWER (W) ** D1 MBR330 VIN C3 100µF BOOST LT1170/1/2 TA02 FLYBACK 40 20 BUCK-BOOST VO = 5V 0 1170/1/2 TA01 BUCK-BOOST VO = 30V 60 0 10 30 20 INPUT VOLTAGE (V) 40 50 117012ff 1

ブランド

LT

供給状況

 
Not pic File
お探し商品LT1171CQは、clevertechのスタッフが市場調査を行いメールにて結果を御報告致します。

「見積依頼」をクリックして どうぞお問合せ下さい。


当サイトの取引の流れ

見積依頼→在庫確認→見積回答→注文→検収→支払 となります。


お取引内容はこちら

0.0626180172