MAX20333B

Adjustable Current-Limit Switch with Low Power Mode

Extended 0perating Range Up to 22V with Adjustable Current-Limit Modes Provides a Highly Versatile Solution


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说明

The MAX20333/A/B/C/D/E/F/G/H/I/J/K programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These current limit switches feature a low 23mΩ (typ) on-resistance and operate from a +3.5V to +22V input voltage range.

The MAX20333 family has three working modes: normal mode (NM), high current mode (HCM), and low power mode (LPM). In NM, the device offers a programmable current-limit protection from 0.2A to 4.75A. The current-limit threshold can be programmed by connecting a suitable resistor to the SETI bump. When the current reaches the programmed threshold, the part prevents the current to further increase. The device can react in three different ways while in current limit: autoretry, latchoff, and continuous. The voltage on the SETI bump is proportional to the current flowing out of the OUT bump at any time and can be read by an ADC.

In high current mode (HCM), the current-limit threshold is multiplied by two, with an internal upper limit set at 5.5A. The voltage on SETI is proportional to the current flowing into IN, but multiplied by a factor 0.5. In low power mode (LPM), the current consumption of the part is dramatically reduced, and the on-resistance is 420mΩ (typ), while still offering an overcurrent protection. The switch is open when the current flowing through the switch exceeds 0.4A (typ).

The devices are available in a 15-bump (2.1mm x 1.52mm) WLP package and operate over the -40°C to +85°C extended temperature range.
MAX20333, MAX20333A: Typical Application Circuit MAX20333, MAX20333A: Typical Application Circuit 放大+

关键特性

  • Flexible Operation
    • Wide Range of Programmable Current Limit (0.2A to 4.75A)
    • Wide Operating Range: 3.5V to 22V
    • Three Different Current-Limit Modes: NM, HCM, LPM
    • Three Different Current-Limit Behaviors: Autoretry, Latchoff, Continuous
    • Power Good Input
    • Current Monitoring
  • Safe Operation
    • Precision Current Limit
    • Output Short Protection
    • Thermal Protection
    • Flag Output
  • Power Savings
    • Low Power Mode (LPM) with Output Short Protection

应用

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Part NumberUSBPower SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByLowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/Pins
minmaxtypminmax
MAX20333 Yes12005500Yes7Resistor0.20.0233.522-40 to +85
THIN WLP/15
查看所有Current Limit and USB Power Switches (82)
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。


MAX20333EVKIT: Evaluation Kit for the MAX20333, MAX2033A, MAX20333B, MAX20333C, MAX20333D, MAX20333E, MAX20333F, MAX20333G, MAX20333H, MAX20333I, MAX20333J, MAX20333K

质量和环境数据

申请可靠性报告: MAX20333B 
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。

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相关资料


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