Analog Devices Inc. ADP7104 LDO 线性稳压器
Analog Devices ADP7104 CMOS 低压差 (LDO) 线性稳压器可在 3.3V-20V 范围内工作，提供高达 500mA 的输出电流。 ADP7104 稳压器采用先进的专有架构，实现高电源抑制、低噪声特性以及出色的线路与负载瞬态响应。 输出电压经过外部反馈分频器，电压范围在 1.22V 至 VIN − VDO。 ADP7104 输出噪声电压为 15μVrms，不受输出电压影响。 “电源良好”数字输出允许电源系统监控器检查输出电压是否正常。 用户可编程精密欠压闭锁功能方便控制多个电源的时序。 ADP7104 稳压器提供 8 引脚 3mm × 3mm LFCSP 和 8 引脚 SOIC 两种封装。 LFCSP 封装不仅是非常紧凑的解决方案，而且还具有出色的散热性能，适合要求高达 500mA 输出电流的薄型、小尺寸应用。 ADP7104 的高输入电压使得该稳压器非常适合用于在 19V 至 1.22V 电压轨范围内工作的高性能模拟和混合信号电路。
The ADP7104 series features both fixed and adjustable output voltage versions. The fixed-voltage versions range from 1.5V to 9V and have a low noise rating of 15μVrms. The adjustable version offers an adjustable output voltage range of 1.22V to VIN − VDO.
A power-good indicator allows power monitors to check the output voltage. A programmable, precision undervoltage lockout function enables the sequencing of multiple power supplies.
The ADP7104 regulators are housed in 8-lead, 3mm × 3mm LFCSP, and 8-lead SOIC packages. The LFCSP package offers designers a compact solution with excellent thermal performance. This package is ideal for applications that require a small, low-profile footprint and up to 500mA of output current. As high-input voltage LDOs, the ADP7104 regulators are well-suited for the regulation of high-performance analog and mixed-signal circuits that operate using 19V to 1.22V rails.
特性
- Input voltage range: 3.3V to 20V
- Maximum output current: 500mA
- Low noise: 15μVrms for fixed output versions
- PSRR performance of 60dB at 10kHz, VOUT = 3.3V
- Reverse current protection
- Low dropout voltage: 350mV at 500mA
- Initial accuracy: ±0.8%
- Accuracy over line, load, and temperature: −2%/+1%
- Low quiescent current (VIN = 5V), IGND= 900μA with 500mA load
- Low shutdown current: <40μA at VIN = 12V, stable with small 1μF ceramic output capacitor
- 7 fixed output voltage options: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V, and 9V
- Adjustable output from 1.22V to VIN − VDO
- Foldback current limit and thermal overload protection
- User-programmable precision UVLO/enable
- Power-good indicator
- 8-lead LFCSP and 8-lead SOIC packages
应用
- Regulation to noise-sensitive applications: ADC, DAC circuits, precision amplifiers, high-frequency oscillators, clocks, and PLLs
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
Application Circuits
Additional Resources
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