| Part No.： | LTC3858-1 |
| Page： | 38 Pages |
| Size： | 413 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 0 |
| Update Time： | 2024-12-17 13:32:54 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LTC3858EUFD-1#PBF | Tube | 73 | 38581 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3858EUFD-1#TRPBF | Reel | 2500 | 38581 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3858IUFD-1#PBF | Tube | 73 | 38581 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3858IUFD-1#TRPBF | Reel | 2500 | 38581 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3858EGN-1#PBF | Tube | 49 | LTC3858GN-1 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic SSOP | |
| LTC3858EGN-1#TRPBF | Reel | 2500 | LTC3858GN-1 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic SSOP | |
| LTC3858IGN-1#PBF | Tube | 49 | LTC3858GN-1 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic SSOP | |
| LTC3858IGN-1#TRPBF | Reel | 2500 | LTC3858GN-1 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic SSOP |
The LTC3858-1 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. Power loss and noise due to the input capacitor ESR are minimized by operating the two controller outputs out of phase.
The 170μA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3858-1 features a precision 0.8V reference and a power good output indicator. A wide 4V to 38V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries.
Independent soft-start pins for each controller ramp the output voltages during start-up. The output latch-off feature protects the circuit in short-circuit conditions.
For a leadless 32-pin QFN package with the additional features of adjustable current limit, clock out, phase modulation and two PGOOD outputs, see the LTC3858 data sheet.
