LTC3600 - 15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down Regulator
Features
- Single Resistor Programmable VOUT
- ±1% ISET Accuracy
- Tight VOUT Regulation Independent of VOUT Voltage
- Easy to Parallel for Higher Current and Heat Spreading
- Wide VOUT Range 0V to VIN – 0.5V
- High Efficiency: Up to 96%
- 1.5A Output Current
- Adjustable Frequency: 200kHz to 4MHz
- 4V to 15V VIN Range
- Current Mode Operation for Excellent Line and Load Transient Response
- Zero Supply Current in Shutdown
- Available in Thermally Enhanced 12-Pin (3mm × 3mm) DFN and MSOP Packages
Typical Application
Description
The LTC3600 is a high efficiency, monolithic synchronous buck regulator whose output is programmed with just one external resistor. The accurate internally generated 50μA current source on the ISET pin allows the use of a single external resistor to program an output voltage that ranges from 0V to 0.5V below VIN. The VOUT voltage feeds directly back to the error amplifier in unity gain fashion and equals the ISET voltage. The operating supply voltage range is 4V to 15V, making it suitable for dual lithium-ion battery and 5V or 12V input point-of-load power supply applications.
The operating frequency is synchronizable to an external clock or programmable from 200kHz to 4MHz with an external resistor. High switching frequency allows the use of small surface mount inductors. The unique constant on-time architecture is ideal for operating at high frequency in high step-down ratio applications that also demand fast load transient response.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
DFN-12, MS-12
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- 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 | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTC3600EDD#PBF | DFN | 12 | E | $4.00 | $2.80 | View |
| LTC3600EDD#TRPBF | DFN | 12 | E | $2.86 | View | |
| LTC3600EMSE#PBF | MSOP | 12 | E | $4.00 | $2.80 | View |
| LTC3600EMSE#TRPBF | MSOP | 12 | E | $2.86 | View | |
| LTC3600IDD#PBF | DFN | 12 | I | $4.60 | $3.22 | View |
| LTC3600IDD#TRPBF | DFN | 12 | I | $3.28 | View | |
| LTC3600IMSE#PBF | MSOP | 12 | I | $4.60 | $3.22 | View |
| LTC3600IMSE#TRPBF | MSOP | 12 | I | $3.28 | View | |
| Buy Now • Request Samples | ||||||
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 |
|---|---|---|---|
| DC1667A | LTC3600EDD Demo Board I 4.5V to 15V input to an adjustable output voltage with 1.5A of current | $100.00 | |
| Buy Now | |||
Applications
- Voltage Tracking Supplies
- Point-of-Load Power Supplies
- Portable Instruments
- Distributed Power Systems
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Simulate
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Related models available in LTspice IV
LTC3600
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
