LTC3636/LTC3636-1 - Dual Channel 6A, 20V Monolithic Synchronous Step-Down Regulator
Datasheet Documentation
Press Release


0.6V to 5V (LTC3636)
1.8V to 12V (LTC3636-1)

Typical Application

LTC3636 Typical Application
LTC3636 Typical Application


The LTC®3636/LTC3636-1 is a high efficiency, dual-channel monolithic synchronous buck regulator using a controlled on-time current mode architecture, with phase lockable switching frequency. The operating supply voltage range is from 3.1V to 20V, making it suitable for lithium-ion battery stacks as well as point of load power supply applications from a 12V or 5V input.

The operating frequency is programmable from 500kHz to 4MHz with an external resistor and may be synchronized to an external clock signal. The high frequency capability allows the use of small surface mount inductors and capacitors. The unique constant frequency/controlled on-time architecture is ideal for high step-down ratio applications that operate at high frequency while demanding fast transient response.

The LTC3636/LTC3636-1 can select between forced continuous mode and high efficiency Burst Mode operation. The LTC3636 and LTC3636-1 differ in their output voltage sense range.


4x5 QFN-28

LTC3636 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
LTC3636EUFD#PBF QFN 28 E $6.36 $4.45
LTC3636EUFD-1#PBF QFN 28 E $6.36 $4.45
LTC3636EUFD-1#TRPBF QFN 28 E $6.42 $4.51
LTC3636IUFD-1#PBF QFN 28 I $6.93 $4.85
LTC3636EUFD#TRPBF QFN 28 E $6.42 $4.51
LTC3636IUFD#TRPBF QFN 28 I $6.99 $4.91
LTC3636IUFD#PBF QFN 28 I $6.93 $4.85
LTC3636IUFD-1#TRPBF QFN 28 I $6.99 $4.91
* 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
DC2335A LTC3636EUFD Demo Board | 3.1V to 20V Input with Vout1 range of 3.1V to 20V up to 6A & Vout2 range of 5V to 20V up to 6A $409.00