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参数资料
| 型号： | MAX8815AEVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT STEP-UP CONV MAX8815A |
| 产品培训模块： | Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | True Shutdown™ |
| 主要目的： | DC/DC，步升 |
| 输出及类型： | 1，非隔离 |
| 功率 - 输出： | 5W |
| 输出电压： | 5V |
| 电流 - 输出： | 1A |
| 输入电压： | 1.2 ~ 5.5 V |
| 稳压器拓扑结构： | 升压 |
| 频率 - 开关： | 2MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX8815A |
1A, 97% Efficiency, 30μA Quiescent Current
Step-Up Converter with True Shutdown
Functional Diagram
ON
SKIPB
OUTS
GND
3V
+
-
ON
ON
REFERENCE
STARTUP
OSCILLATOR
2MHz
OSCILLATOR
MAX8815A
CONTROL
FB
PGND
EP
ON
ON
POUT
BATT
LX
Detailed Description
The MAX8815A current-mode step-up DC-DC switching
converter uses a fixed-frequency PWM architecture with
True Shutdown. In normal mode, the converter switches
when needed, consuming only 30μA of quiescent cur-
rent. In forced-PWM mode (FPWM), the converter
switches every cycle at a constant frequency, thus
enabling noise filtering. The MAX8815A is highly effi-
cient, with an internal switch and synchronous rectifier.
Shutdown reduces the quiescent current to less than
0.1μA. Low quiescent current and high efficiency make
this device ideal for powering portable equipment.
The MAX8815A step-up DC-DC switching converter typ-
ically generates a 3.3V to 5V output voltage from a 1.2V
to 5.5V battery input voltage. The converter operates in
bootstrapped mode with the output powering the device
once the output voltage is ≥ 3V. The current limit is set at
2.5A to deliver 1A at 5V from a 2.5V input, or 500mA at
5V using a 2-cell 1.8V input. Internal soft-start limits the
inrush current to less than 500mA under no-load condi-
tions during startup.
The MAX8815A switches at a 2MHz frequency, allow-
ing for tiny external components. Internal compensation
further reduces the external component count in cost
and space-sensitive applications. The MAX8815A is
optimized for use in DSC and other applications requir-
ing low quiescent current for maximum battery life.
Figures 1a and 1b show the typical application circuits.
8
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相关代理商/技术参数 |
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| MAX8815AEVKIT+ | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX8815A RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8818AETM+ | 功能描述:PMIC 解决方案 10Ch PMIC for 2-Cell Li+ DVC System RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8818AETM+T | 功能描述:PMIC 解决方案 10Ch PMIC for 2-Cell Li+ DVC System RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8818BETM+ | 功能描述:PMIC 解决方案 10Ch PMIC for 2-Cell Li+ DVC System RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8818BETM+T | 功能描述:PMIC 解决方案 10Ch PMIC for 2-Cell Li+ DVC System RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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