LTC1735CGN#PBF
ActiveHIGH EFFICIENCY SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR
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LTC1735CGN#PBF
ActiveHIGH EFFICIENCY SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC1735CGN#PBF |
|---|---|
| Clock Sync | False |
| Control Features | Enable, Power Good, Soft Start |
| Duty Cycle (Max) [Max] | 99.4 % |
| Frequency - Switching | 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | 0 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 0.154 in |
| Package / Case | 16-SSOP |
| Package / Case | 3.9 mm |
| Supplier Device Package | 16-SSOP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 30 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4 V |
LTC1735-1 Series
High Efficiency Synchronous Step-Down Switching Regulator
| Part | Clock Sync | Mounting Type | Output Type | Supplier Device Package | Topology | Number of Outputs | Package / Case | Package / Case [x] | Package / Case [y] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Control Features | Output Configuration | Synchronous Rectifier | Output Phases | Operating Temperature [Min] | Operating Temperature [Max] | Duty Cycle (Max) [Max] | Frequency - Switching | Function | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | Surface Mount | Transistor Driver | 16-SO | Buck | 1 | 16-SOIC | 0.154 in | 3.9 mm | 3.5 V | 30 V | Enable Power Good Soft Start | Positive | 1 | 0 °C | 85 C | 99.4 % | 300 kHz | Step-Down | ||||
Analog Devices | Surface Mount | Transistor Driver | 20-TSSOP | Buck | 1 | 20-TSSOP | 0.173 in | 4.4 mm | 4 V | 30 V | Enable Power Good Soft Start | Positive | 1 | 0 °C | 85 C | 99.4 % | 300 kHz | Step-Down | ||||
Analog Devices | Surface Mount | Transistor Driver | 16-SO | Buck | 1 | 16-SOIC | 0.154 in | 3.9 mm | 3.5 V | 30 V | Enable Power Good Soft Start | Positive | 1 | -40 °C | 85 °C | 99.4 % | 300 kHz | Step-Down | ||||
Analog Devices | Surface Mount | Transistor Driver | 16-SSOP | Buck | 1 | 16-SSOP | 4 V | 30 V | Enable Power Good Soft Start | Positive | 1 | -40 °C | 85 °C | 99.4 % | 300 kHz | Step-Down | 0.154 in | 3.9 mm | ||||
Analog Devices | Surface Mount | Transistor Driver | 16-SSOP | Buck | 1 | 16-SSOP | 4 V | 30 V | Enable Power Good Soft Start | Positive | 1 | 0 °C | 85 C | 99.4 % | 300 kHz | Step-Down | 0.154 in | 3.9 mm | ||||
Analog Devices | Surface Mount | Transistor Driver | 16-SSOP | Buck | 1 | 16-SSOP | 3.5 V | 30 V | Enable Power Good Soft Start | Positive | 1 | -40 °C | 85 °C | 99.4 % | 300 kHz | Step-Down | 0.154 in | 3.9 mm | ||||
Analog Devices | Surface Mount | Transistor Driver | 20-TSSOP | Buck | 1 | 20-TSSOP | 0.173 in | 4.4 mm | 4 V | 30 V | Enable Power Good Soft Start | Positive | 1 | 0 °C | 85 C | 99.4 % | 300 kHz | Step-Down | ||||
Analog Devices | Surface Mount | Transistor Driver | 20-TSSOP | Buck | 1 | 20-TSSOP | 0.173 in | 4.4 mm | 4 V | 30 V | Enable Power Good Soft Start | Positive | 1 | -40 °C | 85 °C | 99.4 % | 300 kHz | Step-Down | ||||
Analog Devices | Surface Mount | Transistor Driver | 16-SSOP | Buck | 1 | 16-SSOP | 4 V | 30 V | Enable Power Good Soft Start | Positive | 1 | 0 °C | 85 C | 99.4 % | 300 kHz | Step-Down | 0.154 in | 3.9 mm | ||||
Analog Devices | Surface Mount | Transistor Driver | 16-SO | Buck | 1 | 16-SOIC | 0.154 in | 3.9 mm | 3.5 V | 30 V | Enable Power Good Soft Start | Positive | 1 | 0 °C | 85 C | 99.4 % | 300 kHz | Step-Down |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 12.70 | |
| 10 | $ 8.96 | |||
| 25 | $ 8.00 | |||
| 100 | $ 6.92 | |||
| 250 | $ 6.40 | |||
| 500 | $ 6.09 | |||
| 1000 | $ 5.86 | |||
Description
General part information
LTC1735-1 Series
The LTC1735 is a synchronous step-down switching regulator controller that drives external N-channel power MOSFETs using a fixed frequency architecture. Burst Mode operation provides high efficiency at low load currents. The precision 0.8V reference is compatible with future generation microprocessors. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values.The operating frequency (synchronizable up to 500kHz) is set by an external capacitor allowing maximum flexibility in optimizing efficiency. A forced continuous control pin reduces noise and RF interference and can assist secondary winding regulation by disabling Burst Mode operation when the main output is lightly loaded.Protection features include internal foldback current limiting, output overvoltage crowbar and optional short-circuit shutdown. Soft-start is provided by an external capacitor that can be used to properly sequence supplies. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 4V to 30V (36V maximum).FeaturesLTC1735-LTC1735-1Power GoodApplicationsNotebook and Palmtop Computers, PDAsCellular Telephones and Wireless ModemsDC Power Distribution Systems
Documents
Technical documentation and resources