LM3208 - 用于射频功率放大器的 650mA 微型、可调节、降压 DC-DC 转换器

LM3208是TI德州仪器公司的一款转换器（集成开关）产品，LM3208是用于射频功率放大器的 650mA 微型、可调节、降压 DC-DC 转换器，本站介绍了LM3208的封装应用图解、特点和优点、功能等，并给出了与LM3208相关的TI元器件型号供参考。

LM3208 - 用于射频功率放大器的 650mA 微型、可调节、降压 DC-DC 转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM3208 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. However, it may be used in many other applications. It steps down an input voltage in the range from 2.7V to 5.5V to an adjustable output voltage of 0.8V to 3.6V. Output voltage is set by using a VCON analog input to control power levels and efficiency of the RF PA.

The LM3208 offers superior performance for mobile phones and similar RF PA applications. Fixed-frequency PWM operation minimizes RF interference. A shutdown function turns the device off and reduces battery consumption to 0.01 µA (typ.).

The LM3208 is available in an 8-pin lead-free DSBGA package. A high switching frequency (2 MHz typ.) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors, are required.

产品特性

2 MHz (typ.) PWM Switching Frequency
Operates from a Single Li-Ion Cell (2.7V to 5.5V)
Adjustable Output Voltage (0.8V to 3.6V)
Fast Output Voltage Transient (0.8V to 3.4V in 25µs typ.)
650mA Maximum Load Capability
High Efficiency (95% typ. at 3.9VIN, 3.4VOUT at 400mA)
8-pin DSBGA Package
Current Overload Protection
Thermal Overload Protection

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