LM120
- Preset Output Voltage Error Less than ±3%
- Preset Current Limit
- Internal Thermal Shutdown
- Operates with Input-Output Voltage Differential down to 1V
- Excellent Ripple Rejection
- Low Temperature Drift
- Easily Adjustable to Higher Output Voltage
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The LM120 series are three-terminal negative regulators with a fixed output voltage of −5V, −12V, and −15V, and up to 1.5A load current capability. Where other voltages are required, the LM137 and LM137HV series provide an output voltage range of −1.2V to −47V.
The LM120 need only one external component—a compensation capacitor at the output, making them easy to apply. Worst case specifications on output voltage deviation due to any combination of line, load or temperature variation assure satisfactory system operation.
Exceptional effort has been made to make the LM120 Series immune to overload conditions. The regulators have current limiting which is independent of temperature, combined with thermal overload protection. Internal current limiting protects against momentary faults while thermal shutdown prevents junction temperatures from exceeding safe limits during prolonged overloads.
Although primarily intended for fixed output voltage applications, the LM120 Series may be programmed for higher output voltages with a simple resistive divider. The low quiescent drain current of the devices allows this technique to be used with good regulation.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM120/LM320 Series 3-Terminal Negative Regulators datasheet (Rev. C) | 2013/4/9 | |||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 應用說明 | AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) | 2013/5/6 | ||||
| 應用說明 | AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) | 2013/5/6 | ||||
| 應用說明 | Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) | 2013/5/5 | ||||
| 應用說明 | AN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B) | 2013/5/5 | ||||
| 應用說明 | Packaging Limits Range of Linear Regulators | 2010/5/8 | ||||
| 應用說明 | Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) | 2008/6/4 | ||||
| 應用說明 | Understanding the Terms and Definitions of LDO Voltage Regulators | 1999/10/21 |
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