LT8610 - 42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current

Features

  • Wide Input Voltage Range: 3.4V to 42V
  • Ultralow Quiescent Current Burst Mode® Operation:
    2.5μA IQ Regulating 12VIN to 3.3VOUT
    Output Ripple < 10mVP-P
  • High Efficiency Synchronous Operation:
    96% Efficiency at 1A, 5VOUT from 12VIN
    94% Efficiency at 1A, 3.3VOUT from 12VIN
  • Fast Minimum Switch-On Time: 50ns
  • Low Dropout Under All Conditions: 200mV at 1A
  • Allows Use Of Small Inductors
  • Low EMI
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Current Mode Operation
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 16-Lead MSOP Package

Typical Application

LT8610 Typical Application
LT8610 Typical Application

Description

The LT®8610 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5μA of quiescent current. 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 down to very low output currents while keeping the output ripple below 10mVP-P. 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 LT8610 reducing the input supply current to 1μA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8610 is available in a small 16-lead MSOP package with exposed pad for low thermal resistance.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

MS-16

LT8610 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT8610ABEMSE#PBF MSOP 16 E $5.36 $3.75 View
LT8610ABEMSE#TRPBF MSOP 16 E $3.81 View
LT8610ABIMSE#PBF MSOP 16 I $5.90 $4.13 View
LT8610ABIMSE#TRPBF MSOP 16 I $4.19 View
LT8610AEMSE#PBF MSOP 16 E $5.36 $3.75 View
LT8610AEMSE#TRPBF MSOP 16 E $3.81 View
LT8610AHMSE#PBF MSOP 16 H $6.26 $4.38 View
LT8610AHMSE#TRPBF MSOP 16 H $4.44 View
LT8610AIMSE#PBF MSOP 16 I $5.90 $4.13 View
LT8610AIMSE#TRPBF MSOP 16 I $4.19 View
LT8610EMSE#PBF MSOP 16 E $5.07 $3.55 View
LT8610EMSE#TRPBF MSOP 16 E $3.61 View
LT8610IMSE MSOP 16 I $5.59 $3.91 View
LT8610IMSE#PBF MSOP 16 I $5.59 $3.91 View
LT8610IMSE#TRPBF MSOP 16 I $3.97 View
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1749A LT8610 Demo Board I Synchronous Step-Down Converter: 3.4V to 42V Input, 3.3VOUT at 2.5A. Contact Factory
DC1749B LT8610 Demo Board I Synchronous Step-Down Converter: 3.4V to 42V Input, 5VOUT at 2.5A. $125.00
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Applications

  • Automotive and Industrial Supplies
  • General Purpose Step-Down
  • GSM Power Supplies

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Design Tools

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LT8610
LT8610A
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