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概览
优势和特点
- Input voltage: 4.5 V to 18 V
- ±1.0% output accuracy
- Integrated MOSFET: 110 mΩ/60 mΩ typical
- Continuous output current: 1 A/1 A
- Power fail comparator generates warning
- Power-on reset with programmable delay timer
- Adjustable voltage monitor for power-down (Channel 2)
- Watchdog refresh input
- Dual phase with 180° out-of-phase operation
- Fixed switching frequency: 300 kHz
- Internal compensation and soft start
- Stable with low ESR output ceramic capacitors
- Precision enable input
- Power feedback during power-off
- UVLO, OCP, OVP, and thermal shutdown protection
产品详情
The ADP2311 is a fully integrated, dual output, synchronous step-down dc-to-dc regulator. The regulator operates from input voltages of 4.5 V to 18 V, and the output can regulate down to 0.6 V. Each channel can provide up to 1 A of continuous output current.
The ADP2311 integrates the high-side and low-side MOSFETs to provide a very high efficiency, compact solution. Both channels of the regulator run at 180° out of phase to reduce the input ripple current and the input capacitor size, thereby helping to lower system electromagnetic interference (EMI). The ADP2311 also integrates internal compensation and soft start circuitry to simplify the design.
An on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. Accurate voltage monitoring circuitry and a power fail comparator provide a controlled power-up and power-down sequence to enhance system reliability.
The ADP2311 also includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).
The ADP2311 operates over the −40°C to +125°C junction temperature range and is available in a 24-lead LFCSP package.
Applications
- Industrial and instrumentation
- Healthcare and medical
- DC-to-DC point of load applications
产品生命周期
推荐新设计使用
本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。
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设计工具
这款专家级设计工具只需一分钟左右的时间就能产生定制的DC/DC转换器设计。用户提供5个输入，并选择优化目标：效率、PCB空间、成本或器件数量。输出为完整的原理图、材料清单(BOM)、效率图和性能摘要。这款工具为每个设计提供一份PDF概述文档和一个空白PCB，以帮助用户快速完成原型制作，验证设计目标。
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