LT8606
LT8606B

RECOMMENDED FOR NEW DESIGNS

42V, 350mA Synchronous Step-Down Regulator with 2.5μA Quiescent Current

Data Sheet (Rev. D)

Part Models: 34
1ku List Price: Starting From $1.41

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Part Details

Wide Input Voltage Range: 3.0V to 42V
Ultralow Quiescent Current Burst Mode^® Operation:
- <3μA I_Q Regulating 12V_IN to 3.3V_OUT
- Output Ripple <10mV_P-P
High Efficiency 2MHz Synchronous Operation:
- >92% Efficiency at 0.35A, 12V_IN to 5V_OUT
350mA Maximum Continuous Output
Fast Minimum Switch-On Time: 35ns
Adjustable and Synchronizable: 200kHz to 2.2MHz

Spread Spectrum Frequency Modulation for Low EMI
Allows Use of Small Inductors
Low Dropout
Peak Current Mode Operation
Accurate 1V Enable Pin Threshold
Internal Compensation
Output Soft-Start and Tracking
Small Thermally Enhanced 10-Lead MSOP Package or 8-Pin 2mm × 2mm DFN Package
AEC-Q100 Qualified for Automotive Applications

Part Models: 34
1ku List Price: Starting From $1.41

Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 2
LTC4380	RECOMMENDED FOR NEW DESIGNS	Low Quiescent Current Surge Stopper
LTC4231	RECOMMENDED FOR NEW DESIGNS	Micropower Hot Swap Controller

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LT8606

LTpowerCAD 1

LT8606 Project - 2MHz Low EMI High Voltage Synchronous Buck Regulator (5.5-42V to 5V @ 350mA)

Design tools for the following parts are available in LTpowerCAD:

LT8606

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.

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.

Evaluation Kits

LT8606EMSE Demo Board │ Synchronous Buck, 5.5V ≤ VIN ≤ 42V; VOUT = 5V @ 350mA, fSW = 2MHz

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Product Details

Demonstration Circuit 2564A is a 42V, 0.35A micropower synchronous step-down regulator featuring the LT8606. The demo board is designed for 5V output from a 5.5V to 42V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The LT8606 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes less than 3μA of quiescent current when output is regulated at 5V. Top and bottom power switches, compensation components and other necessary circuits are inside of the LT8606 to minimize external components and simplify design.