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LT8610AX
42V, 3.5A Synchronous Step-Down Regulator with Operation to 175°C
Alternative Parts
Overview
Features and Benefits
- 100% Tested at 175°C
- ±2% Reference Accuracy Over –40°C to 175°C Range
- Wide Input Voltage Range: 3.7V to 42V
- Ultralow Quiescent Current Burst Mode® Operation
- High Efficiency Synchronous Operation:
- 91% Eff. at 0.5A, at 175°C, 3.3VOUT from 12VIN
- 92% Eff. at 0.5A, at 175°C, 5VOUT from 12VIN
- Adjustable and Synchronizable Frequency: 200kHz to 2.2MHz
- No Thermal Shutdown
- Internal Compensation
- Output Soft-Start and Tracking
- Power Good Flag
- Small Thermally-Enhanced 16-Lead MSOP Package
Product Details
The LT8610AX is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator rated to 175°C junction temperature. The LT8610AX is 100% tested a 175°C. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency across a wide range of output currents while keeping the output ripple low. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8610AX. A capacitor on the TR/SS pin programs the output voltage ramp rate during startup while the PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8610AX is available in small 16-lead MSOP package with exposed pad for low thermal resistance.
| Feedback Voltage | Min VIN | Output Current | Notes | |
| LT8610AC-1 | 0.80V | 3.0V | 3.5A | Fsw = 1.5MHz to 2.2MHz, Optimized Transient Response |
| LT8610AC | 0.80V | 3.0V | 3.5A | Fsw = 200kHz to 2.2MHz |
| LT8610AB | 0.97V | 3.4V | 3.5A | Improved Burst Mode Efficiency |
| LT8610AX | 0.97V | 3.4V | 3.5A | 175°C Max Junction Temp |
| LT8610A | 0.97V | 3.4V | 3.5A | Higher Iout, 30ns Min On Time |
| LT8610 | 0.97V | 3.4V | 2.5A | - |
Applications
- Oil and Gas Exploration
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Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Documentation
Reliability Data (1)
Tools & Simulations
LTspice
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.
Models for the following parts are available in LTspice:
LTpowerCAD
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Design tools for the following parts are available in LTpowerCAD:
Reference Materials
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Design Resources
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.