LTC3810-5
PRODUCTION60V Current Mode Synchronous Switching Regulator Controller
- Part Models
- 6
- 1ku List Price
- Starting From $5.12
Overview
- High Voltage Operation: Up to 60V
- Large 1Ω Gate Drivers
- No Current Sense Resistor Required
- Dual N-Channel MOSFET Synchronous Drive
- Extremely Fast Transient Response
- ±0.5% 0.8V Voltage Reference
- Programmable Output Voltage Tracking/Soft-Start
- Generates 5.5V Driver Supply from Input Supply
- Synchronizable to External Clock
- Selectable Pulse Skip Mode Operation
- Power Good Output Voltage Monitor
- Adjustable On-Time/Frequency: tON(MIN) < 100ns
- Adjustable Cycle-by-Cycle Current Limit
- Programmable Undervoltage Lockout
- Output Overvoltage Protection
- Thermally Enhanced 32-Pin QFN Package
The LTC3810-5 is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 60V, making it ideal for telecom and automotive applications. The LTC3810-5 uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor.
A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifier provides very fast line and load transient response. Large 1O gate drivers allow the LTC3810-5 to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. A shutdown pin allows the LTC3810-5 to be turned off, reducing the supply current to 240µA.
Integrated bias control generates gate drive power from the input supply during start-up or when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher efficiency.
| Features | Adj. UVLO, Sync & Tracking | Package | |
| LTC3810 | Vin 6.2V to 100V, 10V Driver Voltage | Yes | SSOP-28 |
| LTC3810-5 | Vin 4.35V to 60V, 5.5V Driver Voltage | Yes | QFN-32 |
| LTC3812-5 | Vin 4.35V to 60V, 5.5V Driver Voltage | No | TSSOP-16E |
Applications
- 48V Telecom and Base Station Power Supplies
- Networking Equipment, Servers
- Automotive and Industrial Control Systems
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 2
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 |
|---|---|---|---|
| LTC3810EUH-5#PBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LTC3810EUH-5#TRPBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LTC3810HUH-5#PBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LTC3810HUH-5#TRPBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LTC3810IUH-5#PBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) | ||
| LTC3810IUH-5#TRPBF | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 22, 2022 - 22_0023 LTC3810-5 Die Revision |
||
| LTC3810EUH-5#PBF | PRODUCTION | |
| LTC3810EUH-5#TRPBF | PRODUCTION | |
| LTC3810HUH-5#PBF | PRODUCTION | |
| LTC3810HUH-5#TRPBF | PRODUCTION | |
| LTC3810IUH-5#PBF | PRODUCTION | |
| LTC3810IUH-5#TRPBF | PRODUCTION | |
|
Jan 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LTC3810EUH-5#PBF | PRODUCTION | |
| LTC3810EUH-5#TRPBF | PRODUCTION | |
| LTC3810HUH-5#PBF | PRODUCTION | |
| LTC3810HUH-5#TRPBF | PRODUCTION | |
| LTC3810IUH-5#PBF | PRODUCTION | |
| LTC3810IUH-5#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
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LT2940 | PRODUCTION | Power and Current Monitor |
| Hot Swap Controllers 1 | ||
| LTC4364 | RECOMMENDED FOR NEW DESIGNS | Surge Stopper with Ideal Diode |
| Oscillators 1 | ||
| LTC6908 | Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation | |
| Switching Regulators & Controllers 1 | ||
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
Tools & Simulations
LTspice 2
- LTC3810-5 Demo Circuit - High Efficiency High Voltage Buck Converter (12-60V to 5V @ 6A)
- LTC3810-5 Demo Circuit - High Efficiency High Voltage Step-Down Converter (13-60V to 12V @ 6A)
Models for the following parts are available in LTspice:
- LTC3810
- LTC3810-5
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
LTC3810EUH-5 Demo Board | 14V < VIN < 60V, VOUT = 12V @ 10A
Resources
Latest Discussions
No discussions on LTC3810-5 yet. Have something to say?
Start a Discussion on EngineerZone®