ADP2441是恒定频率、采用电流模式控制的
Synchronous step-down DC-DC regulator，可驱动最高1 A的负载，并具有出色的线路和负载调节特性。它可在宽输入电压范围内（4.5 V至36 V）工作，是调整多种类型输入源功率的理想选择。另外，它还具有非常低的最短导通时间(50 ns)，因此适合那些需要非常高降压比的应用。
The output voltage is adjustable from 0.6 V to 0.9 V × VIN. The device integrates a low-resistance N-channel MOSFET for both high-end and low-end devices for high efficiency.
The switching frequency can be adjusted from 300 kHz to 1 MHz using an external resistor. In addition, ADP2441 has a precise PGOOD open-drain output signal.
At low loads, the regulator improves energy efficiency by skipping pulses and reducing switching losses by operating in pulse skip mode. In addition, the regulator operates in fixed frequency pulse width modulation (PWM) mode to reduce electromagnetic interference (EMI) at medium to high loads.
ADP2441 use hiccup mode to protect the IC from short circuits or overcurrent conditions at the output. Externally programmable soft-start limits inrush current when multiple load capacitors are started. Other important features include tracking, input undervoltage lockout (UVLO), thermal shutdown (TSD), and precision enable (EN), which can also be used for logic-level shutdown inputs.
ADP2441 is available in a 3 mm × 3 mm, 12-pin LFCSP package and is rated for an operating temperature range of −40°C to +125°C.
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终端负载应用
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分布式电源系统
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工业控制电源
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标准供电轨转换至24 V/12 V/5 V/3.3 V
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Advantages and features:
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宽输入电压范围：4.5 V至36 V
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最短导通时间：50 ns
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最大负载电流：1 A
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高效率：最高可达94%
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可调节输出：最低至0.6 V
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输出电压精度：±1%
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可调节开关频率：300 kHz至1 MHz
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低负载下的脉冲跳跃模式，节约电源
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精密使能输入引脚
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开漏电源良好指示
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带跟踪功能的外部软启动
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过流限制保护
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欲了解更多特性，请参考数据手册
field
Building technology