产品概述
描述
The LD3985 provides up to 150 mA, from 2.5 V to 6 V input voltage. The ultra low drop voltage, low quiescent current and low noise make it suitable for low power applications and in battery-powered systems. Regulator ground current increases slightly in dropout only, prolonging the battery life. Power supply rejection is better than 60 dB at low frequencies and rolls off at 10 kHz. High power supply rejection is maintained down to low input voltage levels common to battery operated circuits. Shutdown logic control function is available, this means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The LD3985 is designed to work with low ESR ceramic capacitors. Typical applications are in mobile phones and similar battery-powered wireless systems.
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All features
- Input voltage from 2.5 to 6 V
- Stable with low ESR ceramic capacitors
- Ultra low-dropout voltage (60 mV typ. at 150 mA load, 0.4 mV typ. at1 mA load)
- Very low quiescent current (85 μA typ. at no load, 170 μA typ. at 150 mA load; max.1.5 μA in OFF mode)
- Guaranteed output current up to 150 mA
- Wide range of output voltages: 1.22 V; 1.8 V; 2.5 V; 2.7 V; 2.8 V;2.9 V; 3.3 V; 4.7 V
- Fast turn-on time: typ. 200 μs [CO = 1 μF, CBYP = 10 nF and IO = 1 mA]
- Logic-controlled electronic shutdown
- Internal current and thermal limit
- Output low noise voltage 30 μVRMS over 10 Hz to 100 kHz
- SVR of 60 dB at 1 kHz, 50 dB at 10 kHz
- Temperature range: -40 °C to 125 °C
特别推荐
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LD3985
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| LD3985M122R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M18R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M25R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M27R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M28R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M29R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M30R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LD3985M33R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack3 | - | - | |
| LD3985M47R | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
LD3985M122R
Package:
SOT23-5LMaterial Declaration**:
LD3985M28R
Package:
SOT23-5LMaterial Declaration**:
LD3985M47R
Package:
SOT23-5LMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| LD3985M47R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M25R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M33R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M122R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M18R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M30R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M27R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M29R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LD3985M28R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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LD3985M47R Active
LD3985M25R Active
LD3985M33R Active
LD3985M122R Active
LD3985M18R Active
LD3985M30R Active
LD3985M27R Active
LD3985M29R Active
LD3985M28R Active