LTC3736EUF-2#TRPBF
ActiveDUAL 2-PHASE, NO RSENSE™, SYNCHRONOUS CONTROLLER WITH OUTPUT TRACKING
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LTC3736EUF-2#TRPBF
ActiveDUAL 2-PHASE, NO RSENSE™, SYNCHRONOUS CONTROLLER WITH OUTPUT TRACKING
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3736EUF-2#TRPBF |
|---|---|
| Clock Sync | True |
| Control Features | Tracking, Power Good, Enable, Current Limit, Soft Start |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 750 kHz |
| Frequency - Switching [Min] | 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -40 ¯C |
| Output Configuration | Positive |
| Output Phases | 2 |
| Output Type | Transistor Driver |
| Package / Case | 24-WFQFN Exposed Pad |
| Supplier Device Package | 24-QFN (4x4) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 9.8 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.75 V |
LTC3736 Series
Dual 2-Phase, No RSENSE™, Synchronous Controller with Output Tracking
| Part | Synchronous Rectifier | Function | Operating Temperature [Max] | Operating Temperature [Min] | Clock Sync | Topology | Duty Cycle (Max) [Max] | Mounting Type | Control Features | Output Configuration | Frequency - Switching [Min] | Frequency - Switching [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Supplier Device Package | Output Phases | Output Type | Number of Outputs | Package / Case [y] | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-SSOP | 2 | Transistor Driver | 2 | 0.154 in 3.9 mm Width | 24-SSOP | ||
 Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-SSOP | 2 | Transistor Driver | 2 | 0.154 in 3.9 mm Width | 24-SSOP | ||
Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-SSOP | 2 | Transistor Driver | 2 | 0.154 in 3.9 mm Width | 24-SSOP | ||
 Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-SSOP | 2 | Transistor Driver | 2 | 0.154 in 3.9 mm Width | 24-SSOP | ||
Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-SSOP | 2 | Transistor Driver | 2 | 0.154 in 3.9 mm Width | 24-SSOP | ||
 Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-QFN (4x4) | 2 | Transistor Driver | 2 | 24-WFQFN Exposed Pad | |||
Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-QFN (4x4) | 2 | Transistor Driver | 2 | 24-WFQFN Exposed Pad | |||
Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-QFN (4x4) | 2 | Transistor Driver | 2 | 24-WFQFN Exposed Pad | |||
 Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-QFN (4x4) | 2 | Transistor Driver | 2 | 24-WFQFN Exposed Pad | |||
Analog Devices Inc./Maxim Integrated | Step-Down | 85 C | -40 ¯C | Buck | 100 % | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | Positive | 300 kHz | 750 kHz | 2.75 V | 9.8 V | 24-SSOP | 2 | Transistor Driver | 2 | 0.154 in 3.9 mm Width | 24-SSOP |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 5.89 | 1m+ |
| Tape & Reel (TR) | 2500 | $ 5.89 | 1m+ | |
Description
General part information
LTC3736 Series
The LTC3736-1 is a 2-phase dual synchronous stepdown switching regulator controller with tracking that drives external complementary power MOSFETs using few external components. The constant frequency current mode architecture with MOSFET VDSsensing eliminates the need for sense resistors and improves efficiency. Power loss and noise due to the ESR of the input capacitance are minimized by operating the two controllers out of phase.A unique spread spectrum architecture randomly varies the LTC3736-1’s switching frequency from 450kHz to 580kHz, significantly reducing the peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards.Pulse skipping operation provides high efficiency at light loads. 100% duty cycle capability provides low dropout operation, extending operating time in battery-powered systems. The high switching frequencies allow for the use of small surface mount inductors and capacitors.The LTC3736-1 is available in the low profile (0.75mm) 24-pin thermally enhanced (4mm × 4mm) QFN package and 24-lead narrow SSOP packages.Max Current Sense VoltageBurst ModeSoft StartSpread SpectrumLTC3736204mVYesNoNoLTC3736-1204mVNoNoYesLTC3736-2345mVNoYesNoApplicationsOne or Two Lithium-Ion Powered DevicesNotebook and Palmtop Computers, PDAsPortable InstrumentsDistributed DC Power Systems
Documents
Technical documentation and resources