LM3204 - 具有旁通模式的微型、可调节、降压 DC-DC 转换器，用于射频功率放大器

LM3204是TI德州仪器公司的一款转换器（集成开关）产品，LM3204是具有旁通模式的微型、可调节、降压 DC-DC 转换器，用于射频功率放大器，本站介绍了LM3204的封装应用图解、特点和优点、功能等，并给出了与LM3204相关的TI元器件型号供参考。

LM3204 - 具有旁通模式的微型、可调节、降压 DC-DC 转换器，用于射频功率放大器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM3204 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. It steps down an input voltage of 2.7V to 5.5V to an adjustable output voltage of 0.8V to 3.6V. The output voltage is set using an analog input ( VCON) for optimizing efficiency of the RF PA at various power levels.

The LM3204 offers superior features and performance for mobile phones and similar RF PA applications. Fixed-frequency PWM mode minimizes RF interference. Bypass mode turns on an internal bypass switch to power the PA directly from the battery. LM3204 has both forced and automatic bypass modes. Shutdown mode turns the device off and reduces battery consumption to 0.1µA (typ.).

The LM3204 is available in a 10-pin lead free DSBGA package. A high switching frequency (2MHz) 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

2MHz (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 Turn On Time When Enabled (50µs Typ.), 3GPP Compliant
300mA Maximum Load Capability (PWM Mode)
500mA Maximum Load Capability (Bypass Mode)
PWM, Forced and Automatic Bypass Mode
High Efficiency (96% Typ. at 3.6VIN, 3.2VOUT at 120mA)
10-pin DSBGA Package
Current Overload Protection
Thermal Overload Protection

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