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ADM7172

推荐新设计使用

6.5 V、2 A、超低噪声、高 PSRR、快速瞬态响应 CMOS LDO

产品模型
10
产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

产品详情

  • 下载ADM7172-KGD数据手册还提供已知良好的裸片并完全保证达到数据手册规格性能。
  • 输入电压范围:2.3 V6.5 V
  • 最大负载电流:2 A
  • 低噪声:5 µV rms,与输出电压无关(100 Hz100 kHz
  • 快速瞬态响应:1.5 μs1 mA1.5 A负载阶跃)
  • PSRR60 dB (100 kHz)
  • 低压差:172 mV2 A负载,VOUT = 3 V
  • 初始精度:-0.5%(最小值),+1%(最大值)
  • 在整个线路、负载与温度范围内的精度:±1.5%
  • 静态电流:IGND = 0.7 mA(空载)
  • 低关断电流:0.25 μAVIN = 5 V时)
  • 利用4.7 µF小型陶瓷输出电容实现稳定工作
  • 可调和固定输出电压选项:1.2 V5.0 V
  • 可调输出电压范围:1.2 VVIN − VDO
  • 精密使能
  • 可调软启动
  • 8引脚3 mm × 3 mm LFCSP封装
  • ADIsimPower工具支持
ADM7172
6.5 V、2 A、超低噪声、高 PSRR、快速瞬态响应 CMOS LDO
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参考资料

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软件资源

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工具及仿真模型

LTspice


LTspice中提供以下器件型号:

  • ADM7172
  • ADM7172-1.3
  • ADM7172-1.8
  • ADM7172-2.5
  • ADM7172-3.0
  • ADM7172-3.3
  • ADM7172-4.2
  • ADM7172-5.0
LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器,为改善模拟电路的仿真提供增强功能和模型。


评估套件

eval board
EVAL-ADM7170

ADM7170/ADM7171/ADM7172 评估板

特性和优点

  • 输入电压范围: 2.3 V至6.5 V
  • 输出电流范围: 0 mA至2 A(ADM7170为500 mA、ADM7171为1 A、ADM7172为2 A)
  • 输出电压精度: ADM7170为±0.75%、ADM7171/ADM7172为−0.5%/+1%
  • 工作温度范围: -40 ℃至+125 ℃
  • 可以采用两个外部电阻在任意固定输出电压选项上进行输出电压上调
  • VOUT = VOUT(FIXED) × (1 + R1/R2)

产品详情

ADM7170ACP-EVALZ/ADM717Q1CP-EVALZ/ADM7172ACP-EVALZ评估板分别用于演示ADM7170、ADM7171和ADM7172线性稳压器的功能。

使用单个电压源、电压表、电流表和负载电阻,即可对线路和负载调节、压差以及接地电流进行简单的器件测量。

eval board
AD-PAARRAY3552R-SL

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

特性和优点

  • Designed to cover full Tx signal chains with integrated MCU and user-friendly GUI for faster and easier integration
  • Supports fault event protection - overvoltage (OV), overcurrent (OC), and overtemperature (OT)
  • Supports ultrafast sub-µs GaN gate voltage switching ~ (<1 µs)
  • Supports ultrafast (<10 µs) fault event protection from detection up to GaN gate pinch-off
  • Wide range of gate bias voltages from -10 V to +10 V
  • Configurable power-up and power-down sequence

产品详情

The AD-PAARRAY3552R-SL reference design provides control, protection, and proper biasing sequence for GaN power amplifier (PA) arrays. The design incorporates the AD3553R high-speed, dual-channel, 16-bit DAC to support the ultrafast sub-µs voltage settling time of GaN gates.

Key fault events, including overvoltage, overcurrent, and overtemperature, are effectively managed by the LTC7000, a static switch driver responsible for system fault protection.

The on-board MAX32666 ultralow-power ARM® Cortex®-M4 microprocessor provides essential debug and programming features for a comprehensive software development experience with the system. The system's firmware is built on ADI's open-source no-OS framework and includes a user-friendly graphical interface (GUI) for evaluation. Updates are easily applied through an SWD UART bootloader, streamlining prototyping.

The system can be powered by an external +48 V supply, requiring high current capabilities.

APPLICATIONS

  • 5G massive MIMOs
  • Macro base stations
Specifications
Fault Events
Fault Default Limit
Overvoltage +55 V
Overcurrent 3.5 A
Overtemperature 75°C
Output Ports
Port Name No. of ports
GaN gate ports 6
+48 V Gan drain ports 4
+5 V ports 5
Enable ports 2
Power Supply
External +48 V DC at 5 A
Operating Conditions
Temperature Range 45°C to +75°C

EVAL-ADM7170
ADM7170/ADM7171/ADM7172 评估板
AD-PAARRAY3552R-SL
RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

参考电路

Isolated and Nonisolated RS-485 Transceiver Simplified Schematic
CN0507 参考设计

完整的两端口矢量网络分析仪  

特性和优点

  • 完整的2端口矢量网络分析仪
  • 工作频率范围:1.7 GHz至3.4 GHz
  • 零中频系统架构
CN0507
完整的两端口矢量网络分析仪  

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