LTC3388
RECOMMENDED FOR NEW DESIGNS20V High Efficiency Nanopower Step-Down Regulator
- Part Models
- 16
- 1ku List Price
- Starting From $4.48
Overview
- 720nA Input IQ in Regulation (No Load), VIN = 4V
- 820nA Input IQ in Regulation (No Load), VIN = 20V
- 400nA Input IQ in UVLO
- 2.7V to 20V Input Operating Range
- Up to 50mA of Output Current
- Pin Selectable Output Voltages:
- 1.2V, 1.5V, 1.8V, 2.5V (LTC3388-1)
- 2.8V, 3.0V, 3.3V, 5.0V (LTC3388-3)
- High Efficiency Hysteretic Synchronous DC/DC Conversion
- Standby Mode Disables Buck Switching
- Available in 10-Lead MSE and 3mm × 3mm DFN Packages
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.
Applications
- Keep Alive Power for Portable Products
- Industrial Control Supplies
- Distributed Power Systems
- Battery-Operated Devices
Documentation
Data Sheet 1
User Guide 1
Technical Articles 4
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3388EDD-1#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388EDD-1#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388EDD-3#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388EDD-3#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388EMSE-1#PBF | 10-Lead MSOP w/ EP | ||
| LTC3388EMSE-1#TRPBF | 10-Lead MSOP w/ EP | ||
| LTC3388EMSE-3#PBF | 10-Lead MSOP w/ EP | ||
| LTC3388EMSE-3#TRPBF | 10-Lead MSOP w/ EP | ||
| LTC3388IDD-1#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388IDD-1#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388IDD-3#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388IDD-3#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3388IMSE-1#PBF | 10-Lead MSOP w/ EP | ||
| LTC3388IMSE-1#TRPBF | 10-Lead MSOP w/ EP | ||
| LTC3388IMSE-3#PBF | 10-Lead MSOP w/ EP | ||
| LTC3388IMSE-3#TRPBF | 10-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3388EMSE-1#PBF | PRODUCTION | |
| LTC3388EMSE-1#TRPBF | PRODUCTION | |
| LTC3388EMSE-3#PBF | PRODUCTION | |
| LTC3388EMSE-3#TRPBF | PRODUCTION | |
| LTC3388IMSE-1#PBF | PRODUCTION | |
| LTC3388IMSE-1#TRPBF | PRODUCTION | |
| LTC3388IMSE-3#PBF | PRODUCTION | |
| LTC3388IMSE-3#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
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Tools & Simulations
LTspice 2
- LTC3388-3 Demo Circuit - Nanopower Split-Voltage Power Supply (6-12V to ±5V @ 50mA)
- LTC3388-1 Demo Circuit - Low Input Voltage Step-Down Converter (2.7-5.5V to 1.2V @ 50mA)
Models for the following parts are available in LTspice:
- LTC3388-1
- LTC3388-3
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA
Resources
LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA
Resources
LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA
Resources
LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA