LTC3523EUD#PBF
ActiveSYNCHRONOUS 600MA STEP-UP AND 400MA STEP-DOWN DC/DC CONVERTERS
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LTC3523EUD#PBF
ActiveSYNCHRONOUS 600MA STEP-UP AND 400MA STEP-DOWN DC/DC CONVERTERS
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3523EUD#PBF |
|---|---|
| Current - Output | 600 mA, 400 mA |
| Frequency - Switching | 1.2 MHz |
| Function | Step-Down, Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 16-WFQFN Exposed Pad |
| Supplier Device Package | 16-QFN (3x3) |
| Synchronous Rectifier | True |
| Topology | Boost, Buck |
| Voltage - Input (Max) [Max] | 5.5 V |
| Voltage - Input (Min) [Min] | 1.8 V |
| Voltage - Output (Max) [Max] | 5.5 V |
| Voltage - Output (Min/Fixed) | 0.615 V |
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 | $ 10.22 | |
| 10 | $ 7.11 | |||
| 25 | $ 6.31 | |||
| 100 | $ 5.41 | |||
| 250 | $ 4.98 | |||
| 500 | $ 4.72 | |||
| 1000 | $ 4.50 | |||
Description
General part information
LTC3523 Series
The LTC3523/LTC3523-2 combine a 600mA step-up DC/DC converter with a 400mA synchronous step-down DC/DC converter in a tiny 3mm × 3mm package. The 1.2MHz/2.4MHz switching frequencies minimize the solution footprint while maintaining high efficiency. Both converters feature soft-start and internal compensation, simplifying the design.Both the step-up and step-down converters are current mode controlled and utilize an internal synchronous rectifier for high efficiency. The step-up supports 0% duty cycle operation and the step-down converter supports 100% duty cycle operation to extend battery run time. If the MODE pin is held high, both converters automatically transition between Burst Mode operation and PWM operation improving light load efficiency. Fixed, low noise 1.2MHz/2.4MHz PWM operation is selected when MODE is grounded.The LTC3523/LTC3523-2 provide a sub-2μA shutdown mode, overtemperature shutdown and current limit protection on both converters. The LTC3523/LTC3523-2 are housed in a 16-lead 3mm × 3mm × 0.75mm QFN package.ApplicationsDigital CamerasMedical InstrumentsIndustrial HandheldsGPS Navigators
Documents
Technical documentation and resources