LM3205
- 2 MHz (typ.) PWM Switching Frequency
- Operates from a Single Li-Ion Cell (2.7V to 5.5V)
- Variable Output Voltage (0.8V to 3.6V)
- Fast Output Voltage Transient (0.8V to 3.6V in 20µs)
- 650mA Maximum Load Capability
- High Efficiency (96% Typ at 4.2VIN, 3.4VOUT at 400mA) from Internal Synchronous Rectification
- Current Overload Protection
- Thermal Overload Protection
- Packages
- 10-Pin WSON
All trademarks are the property of their respective owners.
The LM3205 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell, however they may be used in many other applications. It steps down an input voltage from 2.7V to 5.5V to a variable output voltage from 0.8V(typ.) to 3.6V(typ.). Output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF PA.
The LM3205 offers superior performance for mobile phones and similar RF PA applications. Fixed-frequency PWM operation minimizes RF interference. Shutdown function turns the device off and reduces battery consumption to 0.01 µA (typ.).
The LM3205 is available in DSBGA package and WSON package. For all other package options contact your local TI sales office.
A high switching frequency (2 MHz) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors are required.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM3205 650mA Mini, Adj, Step-Down DC-DC Cnvtr for RF Pwr Amps datasheet (Rev. E) | 2013/04/02 | |
| EVM User's guide | AN-1413 LM3205 Evaluation Board (Rev. A) | 2013/04/30 | ||
| Application note | Optimizing RF Power Amplifier System Efficiency Using DC-DC Converters | 2007/03/21 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| WSON (DSC) | 10 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치