LTC3832 - LTC3832是High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
LTC3832是Linear公司的一款外部开关电源控制器产品，LTC3832是High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation，本站介绍了LTC3832的封装应用图解、特点和优点、功能等，并给出了与LTC3832相关的凌力尔特元器件型号供参考。
LTC3832 - High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
LTC3832 - High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation - Linear Technology（凌力尔特）
功能描述
The LTC3832/LTC3832-1 are high power, high efficiency switching regulator controllers optimized for 3.3V-5V to 0.6V-3.xV step-down applications. A precision internal reference and feedback system provide ±1% output regulation over temperature, load current and line voltage variations. The LTC3832/LTC3832-1 use a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel MOSFET, providing an adjustable current limit without a current sense resistor.
The LTC3832/LTC3832-1 operate with an input supply voltage as low as 3V and with a maximum duty cycle of >91% over temperature. They include a fixed frequency PWM oscillator for low output ripple operation. The 300kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to 500kHz. In shutdown mode, the LTC3832 supply current drops to <10µA. The LTC3832-1 is the SO-8 version without current limit, frequency adjustment and shutdown functions.
特点
VOUT as Low as 0.6V High Power Switching Regulator Controller for 3.3V-5V to 0.6V-3.xV Step-Down Applications No Current Sense Resistor Required Low Input Supply Voltage Range: 3V to 8V Maximum Duty Cycle >91% Over Temperature All N-Channel External MOSFETs Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations High Efficiency: Over 95% Possible Adjustable or Fixed 2.5V Output (LTC3832) Programmable Fixed Frequency Operation: 100kHz to 500kHz External Clock Synchronization Soft-Start Low Shutdown Current: <10µA Overtemperature Protection Available in SO-8 and SSOP-16 Packages应用
CPU Power Supplies Multiple Logic Supply Generator Distributed Power Applications High Efficiency Power Conversion以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC3832-1ES8 | SO-8 | E | $4.20 | $2.95 |
| LTC3832-1ES8#PBF | SO-8 | E | $4.20 | $2.95 |
| LTC3832-1ES8#TR | SO-8 | E | | $3.01 |
| LTC3832-1ES8#TRPBF | SO-8 | E | | $3.01 |
| LTC3832EGN | SSOP-16 | E | $4.46 | $3.10 |
| LTC3832EGN#PBF | SSOP-16 | E | $4.46 | $3.10 |
| LTC3832EGN#TR | SSOP-16 | E | | $3.16 |
| LTC3832EGN#TRPBF | SSOP-16 | E | | $3.16 |
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