LTC3388 - 20V High Efficiency Nanopower Step-Down Regulator
The LTC3388-1/LTC3388-3 are high efficiency step-down DC/DC converters with internal high side and synchronous power switches that draw only 720nA typical DC supply current at no load while maintaining output voltage regulation.
Capable of supplying 50mA of load current, the LTC3388-1/ LTC3388-3 also incorporate an accurate undervoltage lockout (UVLO) feature to disable the converter and maintain a low quiescent current state when the input voltage falls below 2.3V. In regulation, the LTC3388-1/LTC3388-3 enter a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. An additional standby mode disables buck switching while the output is in regulation for short duration loads requiring low ripple.
Output voltages of 1.2V, 1.5V, 1.8V, 2.5V (LTC3388-1) and 2.8V, 3.0V, 3.3V, 5.0V (LTC3388-3) are pin selectable. The LTC3388-1/LTC3388-3 can operate with VIN up to 20V while the no load quiescent current remains below 1μA.
Features
Typical Application  | Applications
Packaging  |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC3388EDD-1#PBF | 3x3 DFN-10 | E | $4.22 | $2.95 |
| LTC3388EDD-1#TRPBF | 3x3 DFN-10 | E | $3.01 | |
| LTC3388EDD-3#PBF | 3x3 DFN-10 | E | $4.22 | $2.95 |
| LTC3388EDD-3#TRPBF | 3x3 DFN-10 | E | $3.01 | |
| LTC3388EMSE-1#PBF | MS-10E | E | $4.22 | $2.95 |
| LTC3388EMSE-1#TRPBF | MS-10E | E | $3.01 | |
| LTC3388EMSE-3#PBF | MS-10E | E | $4.22 | $2.95 |
| LTC3388EMSE-3#TRPBF | MS-10E | E | $3.01 | |
| LTC3388IDD-1#PBF | 3x3 DFN-10 | I | $4.96 | $3.47 |
| LTC3388IDD-1#TRPBF | 3x3 DFN-10 | I | $3.53 | |
| LTC3388IDD-3#PBF | 3x3 DFN-10 | I | $4.96 | $3.47 |
| LTC3388IDD-3#TRPBF | 3x3 DFN-10 | I | $3.53 | |
| LTC3388IMSE-1#PBF | MS-10E | I | $4.96 | $3.47 |
| LTC3388IMSE-1#TRPBF | MS-10E | I | $3.53 | |
| LTC3388IMSE-3#PBF | MS-10E | I | $4.96 | $3.47 |
| LTC3388IMSE-3#TRPBF | MS-10E | I | $3.53 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1658A-A | LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA | $175.00 |
| DC1658A-B | LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA | $175.00 |
- LTC3388 Package Drawing LTC3388
- R526 - Reliability Data
- Easy, ±5V Split-Voltage Power Supply for Analog Circuits Draws Only 720nA at No Load
- Nanopower Buck Converter Runs on 720nA, Easily Fits into Energy Harvesting and Other Low Power Applications
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- IoT 的功率需求类似于能量收集系统
- 面向能量收集的低功率转换
- 无线传感器节点的低功率电源转换方案
- 具超低静态电流的 IC 有效地推动智能可穿戴式设备革命
- 可穿戴技术利用低功率转换保障身体健康
- 突破性的 20V 毫微功率开关稳压器可提供 50mA 输出及仅 720nA 的静态电流
- LTC3388 Footprints and Symbols
- LTC3388-1 Demo Circuit - Low Input Voltage Step-Down Converter (2.7-5.5V to 1.2V @ 50mA)
- LTC3388-3 Demo Circuit - Nanopower Split-Voltage Power Supply (6-12V to ±5V @ 50mA)
