升降压型 Vin=2.3V~5.5V Vout=4.5V 600mA
Product Details
The ADP2503/ADP2504 are high efficiency, low quiescent current step-up/step-down dc-to-dc converters that can operate at input voltages greater than, less than, or equal to the regulated output voltage. The power switches and synchronous rectifiers are internal to minimize external part count. At high load currents, the ADP2503/ADP2504 use a current-mode, fixed frequency pulse-width modulation PWM control scheme for optimal stability and transient response. To ensure the longest battery life in portable applications, the ADP2503/ADP2504 have an optional power save mode that reduces the switching frequency under light load conditions. For wireless and other low noise applications where variable frequency power save mode may cause interference, the logic control input sync forces fixed frequency PWM operation under all load conditions.
The ADP2503/ADP2504 can run from input voltages between 2.3 V and 5.5 V, allowing single lithium or lithium polymer cell, multiple alkaline or NiMH cells, PCMCIA, USB, and other standard power sources. The ADP2503/ADP2504 have fixed output options, or using the adjustable model, the output voltage can be programmed through an external resistor divider. Compensation is internal to minimize the number of external components.
During logic-controlled shutdown, the input is disconnected from the output and draws less than 1 μA from the input source. Operating as boost converters, the ADP2503/ADP2504 feature a true load disconnect function that isolates the load from the power source. Other key features include undervoltage lockout to prevent deep battery discharge, and soft start to prevent input current overshoot at startup.
**Applications**
* Wireless handsets
* Digital cameras/portable audio players
* Miniature hard disk power supplies
* USB powered devices
Data Sheet, Rev. A, 08/09
### Features and Benefits
输出接口数 1
输出电压 4.5 V
输出电流 600 mA
供电电流 50.0 µA
开关频率 2900 kHz
输入电压Max 5 V
输入电压Min 2.3 V
输出电压Min 4.5 V
输出电流Max 0.6 A
工作温度Max 125 ℃
工作温度Min -40 ℃
电源电压 2.3 V
安装方式 Surface Mount
引脚数 10
封装 LFCSP EP-10
封装 LFCSP EP-10
工作温度 -40℃ ~ 125℃ TA
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 NiBP based on ECG and PPG, Sport Watch, Clinical, SpO2, Motion Sensing/Fall Detection, EEG , Health, Wellness and Fitness, Wearable Health Monitoring, Medical Isolation and Patient Safety, Clinical Monitoring, Healthcare, Portable Blood Analyzer, Body Composition Measurement, Respiration Measurement
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADP2503ACPZ-4.5-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
ADP2503ACPZ-3.3-R7 亚德诺 | 功能相似 | ADP2503ACPZ-4.5-R7和ADP2503ACPZ-3.3-R7的区别 |
ADP2503ACPZ-R7 亚德诺 | 功能相似 | ADP2503ACPZ-4.5-R7和ADP2503ACPZ-R7的区别 |
ADP2503ACPZ-5.0-R7 亚德诺 | 功能相似 | ADP2503ACPZ-4.5-R7和ADP2503ACPZ-5.0-R7的区别 |