MAX1556A

16µA IQ、1.2A PWM降压型DC-DC转换器

16µA静态电流、1.2A和600mA、降压型转换器,输出电流为1mA时效率高达95%


点击查看特定型号的库存状况。

说明

MAX1556/MAX1556A/MAX1557是低工作电流(16µA)、固定频率的降压型调节器。这些转换器具有高工作频率、低静态电流、低压差等特性,低静态电流(27µA)使其非常适合用于1节锂离子电池或3节碱性/NiMH电池供电的便携式装置。MAX1556最高可提供1.2A电流,通过引脚可以选择1.8V、2.5V与3.3V输出,或可调输出。MAX1557最高可提供600mA电流,通过引脚可以选择1V、1.3V与1.5V输出,或可调输出。

MAX1556/MAX1556A/MAX1557包含一个低导通电阻的内部MOSFET开关和一个同步整流器,以最少的外部元件数提供高效、低压差指标。采用专有的拓扑结构,在高固定频率工作模式下,保证轻载和满载时都能保持优异的性能。1MHz PWM开关频率使外部元件尺寸最小。这两种器件都具有可调节的软启动,可以减小电池的瞬态负载变化。

MAX1556/MAX1556A/MAX1557提供细小的10引脚TDFN (3mm x 3mm)封装。
MAX1556、MAX1557:典型工作电路 MAX1556、MAX1557:典型工作电路 放大+

关键特性

  • 最高97%的效率
  • 1mA负载电流下95%的效率
  • 16µA低静态电流
  • 1MHz PWM开关
  • 3.3µH小尺寸电感
  • 可选择3.3V、2.5V、1.8V、1.5V、1.3V、1.2V、1.0V或可调输出
  • 保证1.2A输出电流(MAX1556/MAX1556A)
  • 电压配置优化负载瞬态响应
  • 低压差下具有27µA的静态电流
  • 0.1µA的低关断电流
  • 不需要外部肖特基二极管
  • 零过冲电流模拟软启动
  • 小尺寸、10引脚、3mm x 3mm TDFN封装

应用

  • 蜂窝电话/智能电话
  • 数码相机和便携式摄像机
  • 手持式仪表
  • PDA与掌上电脑
  • 便携式MP3和DVD播放器
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX1556 2.65.50.755.5
1.8
2.5
3.3
Preset
Resistor
1.2InternalYes11000
TDFN/10
$1.66 @1k
MAX1557 
1
1.3
1.5
0.6
TDFN/10
$1.56 @1k
查看所有Step-Down Switching Regulators (380)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX1556EVKIT: MAX1556和MAX1557评估板
USB2GPIO: Evaluation Kit for the USB2GPIO

质量和环境数据

申请可靠性报告: MAX1556A 
无铅封装的锡(Sn)晶须报告
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

质量管理体系 >
环境管理体系 >

 
Status:
Package:
Temperature:

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