演示目录 / 稳压器
5V 500mA step-down regulator D24V5F5
Pololu · MPN 2843 · 智能体可读版本
$8.95参考价 · 2026-08-22
取自 Pololu 自有结构化数据，日期如上所示 — 这不是报价。我们刻意不声明可获得性。
| Pololu | $8.95 · 2026-08-22 | 产品页面 ↗ |
Partsgraph 佐证规格表（PDF）自有文档 · 由下列来源汇编
规格 — 每个数值都附带凭据
电气
| 空载静态电流，typ | 200 μA | 供应商页面“% 500 kHz switching frequency (when not in power-save mode) 200 μA typical no-load quiescent current Over-current and short-ci” |
| 过流 / 过热保护 | 是 | 供应商页面“ight versions of the D24V5Fx family. The regulators feature short-circuit/over-current protection, and thermal shutdown helps prevent” |
| 反向电压保护 | 否 | 供应商页面“shutdown helps prevent damage from overheating. The boards do not have reverse-voltage protection. If you need more output current, consider the very similar” |
| 拓扑结构 | buck (step-down) | 供应商页面“voltage regulator in TO-220 package. The D24V5Fx family of buck (step-down) voltage regulators generates lower output voltages from inp” |
| 可施加的 VIN 范围，系列（在压差极限之前） | 3 至 36 V | 供应商页面“near regulator in a TO-220 package. Features Input voltage: 3 V to 36 V for output voltages of 1.8 V and 2.5 V [ output voltage + d” |
| SHDN 低电平阈值（低于） | 0.4 V | 供应商页面“utput voltage (VOUT). The SHDN pin can be driven low (under 0.4 V) to turn off the output and put the board into a low-power” |
| SHDN 到 VIN 的上拉电阻 | 100 kΩ | 供应商页面“output and put the board into a low-power state. There is a 100 kΩ pull-up resistor between the SHDN pin and VIN, so if you wa” |
| SHDN 拉低时的电流 @ 36 V 输入（约） | 360 μA | 供应商页面“tional to the input voltage. (At 36 V in it will draw about 360 μA.) The input voltage, VIN, powers the regulator. Voltages be” |
| 输入高于 20 V 时推荐的输入电容 (min) | 33 μF | 供应商页面“ads or supply has high inductance, we recommend soldering a 33 μF or larger electrolytic capacitor close to the regulator bet” |
| 推荐的输入电容耐压 (min) | 50 V | 供应商页面“een VIN and GND. The capacitor should be rated for at least 50 V. More information about LC spikes can be found in our appli” |
性能
| 开关频率 | 500 kHz | 供应商页面“mum output current: 500 mA Typical efficiency of 80% to 93% 500 kHz switching frequency (when not in power-save mode) 200 μA ty” |
| 典型效率 | 80 至 93 % | 供应商页面“DC-to-DC converters) and have a typical efficiency between 80% to 93%, which is much more efficient than linear voltage regulator” |
| 输出电压精度 | 4 % | 供应商页面“12 V, or 15 V output (depending on regulator version) with 4% accuracy Maximum output current: 500 mA Typical efficiency” |
| 轻载时的省电模式 | 是 | 供应商页面“input and output voltage is large. These regulators have a power-save mode that activates at light loads and a low quiescent (no load)” |
接口
| 关断引脚 (SHDN) | 是 | 供应商页面“ections The buck regulator has four connections: shutdown ( SHDN ), input voltage (VIN), ground (GND), and output voltage (V” |
| 连接方式 | shutdown ( SHDN ), input voltage (VIN), ground (GND), and output voltage (VOUT) | 供应商页面“ulator Connections The buck regulator has four connections: shutdown ( SHDN ), input voltage (VIN), ground (GND), and output voltage (VOUT). The SHDN pin can be driven low (under 0.4 V) to turn off t” |
机械
| 板卡大小 | 13 mm x 10 mm x 3 mm | 供应商页面“n, over-temperature shutoff Small size: 0.5″ x 0.4″ x 0.1″ (13 mm x 10 mm x 3 mm) Using the regulator Connections The buck regulator has fou” |
| 引脚间距 | 0.1 ″ | 供应商页面“labeled on the back side of the PCB and are arranged with a 0.1″ spacing along the edge of the board for compatibility with” |
| 含公头排针（直插 + 弯针） | 是 | 供应商页面“4x1 straight male header strip or the 4x1 right-angle male header strip that is included. Typical efficiency and output current The efficiency of a” |
通用
| 输出电压 | 5 V | 供应商页面“Pololu 5V, 500mA Step-Down Voltage Regulator D24V5F5 Voltage Regulato” |
| 输出电流 | 500 mA | 供应商页面“Pololu 5V, 500mA Step-Down Voltage Regulator D24V5F5 Voltage Regulators and” |
| 输入电压 | 5.1 至 36 V | 供应商页面“pical max output current 1 Input voltage range 2 5 V 500 mA 5.1 V - 36 V Note 1: Actual achievable maximum continuous output current” |