LTC3607 - Dual 600mA 15V Monolithic Synchronous Step-Down DC/DC Regulator


  • High Efficiency: Up to 96%
  • Very Low Quiescent Current: 55μA Total
  • 2.25MHz Constant Frequency Operation
  • Low Dropout Operation: 100% Duty Cycle
  • Low-Ripple (Typical 30mVP-P) Burst Mode® Operation
  • Peak Current-Mode Control Architecture for Excellent Line and Load Transient Response
  • Wide Voltage Input Range: 4.5V to 15V
  • 600mA/Channel Rated Output Current
  • 0.6V Reference Allows Low Output Voltages
  • ±1.5% Output Voltage Accuracy
  • Ultralow Shutdown Current: IQ < 1μA
  • Internal Compensation
  • Power Good Outputs
  • Externally Frequency Synchronization (1MHz to 4MHz)
  • Independent Internal Soft-Start for Each Channel
  • Small 16-Lead Thermally Enhanced Thin QFN (3mm × 3mm) and MSE Packages

Typical Application

LTC3607 Typical Application
LTC3607 Typical Application


The LTC®3607 is a 15V dual 600mA monolithic synchronous step-down regulator which has only 55μA quiescent current. Intended for a variety of applications, including dual lithium-ion battery products, it operates from a wide 4.5V to 15V input voltage range. It features a constant 2.25MHz switching frequency, enabling the use of tiny, low cost capacitors and inductors 1mm or less in height. Each output voltage is adjustable from 0.6V to VIN. The internal synchronous power switches provide high efficiency without the need for external Schottky diodes.

A user selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency; Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest ripple noise.

To further the maximize battery run time, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle). In shutdown, the device draws <1μA.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
LTC3607EMSE#PBF MS-16E MSE E 05-08-1667 Yes
LTC3607EMSE#TRPBF MS-16E MSE E 05-08-1667 Yes
LTC3607EUD#PBF 3x3 QFN-16 UD E 05-08-1691 Yes
LTC3607EUD#TRPBF 3x3 QFN-16 UD E 05-08-1691 Yes
LTC3607IMSE#PBF MS-16E MSE I 05-08-1667 Yes
LTC3607IMSE#TRPBF MS-16E MSE I 05-08-1667 Yes
LTC3607IUD#PBF 3x3 QFN-16 UD I 05-08-1691 Yes
LTC3607IUD#TRPBF 3x3 QFN-16 UD I 05-08-1691 Yes

LTC3607 Package Drawing
LTC3607 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC3607EMSE#PBF MS-16E E $3.50 $2.45 Yes
LTC3607EMSE#TRPBF MS-16E E $2.51 Yes
LTC3607EUD#PBF 3x3 QFN-16 E $3.36 $2.35 Yes
LTC3607EUD#TRPBF 3x3 QFN-16 E $2.41 Yes
LTC3607IMSE#PBF MS-16E I $3.86 $2.70 Yes
LTC3607IMSE#TRPBF MS-16E I $2.76 Yes
LTC3607IUD#PBF 3x3 QFN-16 I $3.70 $2.59 Yes
LTC3607IUD#TRPBF 3x3 QFN-16 I $2.65 Yes
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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
DC1596A LTC3607EUD Demo Board (QFN) | 4.5V ≤ VIN ≤ 15V; VOUT1: 1.2V/1.5V/1.8V @ 0.6A, VOUT2: 2.5V/3.3V/5V @ 0.6A $125.00
DC1847A LTC3607EMSE Demo Board (MSOP) | 4.5V ≤ VIN ≤ 15V; VOUT1: 1.2V/1.5V/1.8V @ 0.6A, VOUT2: 2.5V/3.3V/5V @ 0.6A Contact Factory
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Click here to view our complete list of demo boards


  • Dual Lithium-Ion Battery Supplies
  • Automotive Applications
  • Servers

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Design Tools


LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

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