 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
LTC1266CS 数据表(PDF) 1 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC1266CS 数据表(HTML) 1 Page - Linear Technology |
|
|
1 / 20 page  1 LTC1266 LTC1266-3.3/LTC1266-5 Synchronous Regulator Controller for N- or P-Channel MOSFETs S FEATURE DESCRIPTIO s Ultra-High Efficiency: Over 95% Possible s Drives N-Channel MOSFET for High Current or P-Channel MOSFET for Low Dropout s Pin Selectable Burst Mode Operation s 1% Output Accuracy (LTC1266A) s Pin Selectable Phase of Topside Driver for Boost or Step-Down Operation s Wide VIN Range: 3.5V to 20V s On-Chip Low-Battery Detector s High Efficiency Maintained over Large Current Range s Low 170 µA Standby Current at Light Loads s Current Mode Operation for Excellent Line and Load Transient Response s Logic Controlled Micropower Shutdown: IQ < 40µA s Short Circuit Protection s Synchronous Switching with Nonoverlaping Gate Drives s Available in 16-Pin Narrow SO Package The LTC ®1266 series is a family of synchronous switching regulator controllers featuring automatic Burst Mode TM operation to maintain high efficiencies at low output currents. These devices drive external power MOSFETs at switching frequencies up to 400kHz using a constant off- time current mode architecture providing constant ripple current in the inductor. They can drive either an N-channel or a P-channel topside MOSFET. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 18V (20V maximum). Constant off-time architecture provides low dropout regu- lation limited only by the RDS(ON) of the topside MOSFET (when using the P-channel) and the resistance of the inductor and current sense resistor. The LTC1266 series combines synchronous switching for maximum efficiency at high currents with an automatic low current operating mode, called Burst Mode operation, which reduces switching losses. Standby power is re- duced to only 1mW at VIN = 5V (at IOUT = 0). Load currents in Burst Mode operation are typically 0mA to 500mA. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation. Figure 1. High Efficiency Step-Down Converter LTC1266-3.3 Efficiency LOAD CURRENT (A) 0.01 80 85 90 95 100 0.1 5 1 LTC1266 • TA02 VIN = 5V 0V = NORMAL >1.5V = SHUTDOWN N-CHANNEL Si9410 + CIN 100 µF ×2 L* 5 µH D2 MBR0530T1 RSENSE 0.02 Ω 100k VOUT 3.3V 5A LOW BAT OUT VIN 4V TO 9V ITH CT SGND CT 180pF CC 3300pF RC 470 Ω + COUT 330 µF × 2 D1 MBRS130LT3 LTC1266 • TA01 BDRIVE BINH PGND N-CHANNEL Si9410 VIN PWR VIN LBOUT LBIN PINV LTC1266-3.3 SHDN SENSE+ TDRIVE SENSE– 1000pF CB 0.1 µF *COILTRONICS CTXO212801 LOW BAT IN s Notebook and Palmtop Computers s Portable Instruments s Cellular Telephones s DC Power Distribution Systems s GPS Systems S APPLICATI APPLICATI TYPICAL |
类似零件编号 - LTC1266CS |
|
类似说明 - LTC1266CS |
|
|
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 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 |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
