LTC3835 - Low IQ Synchronous Step-Down Controller
The LTC3835 is a high performance step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 650kHz.
The 80μA 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 LTC3835 features a precision 0.8V reference and a power good output indicator. The 4V to 36V input supply range encompasses a wide range of battery chemistries.
The TRACK/SS pin ramps the output voltage during startup. Current foldback limits MOSFET heat dissipation during short-circuit conditions.
Features
Typical Application  | Applications
Packaging  |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC3835EFE#PBF | TSSOP-20 | E | $5.07 | $3.55 |
| LTC3835EFE#TRPBF | TSSOP-20 | E | $3.61 | |
| LTC3835EUFD#PBF | 4x5 QFN-20 | E | $5.07 | $3.55 |
| LTC3835EUFD#TRPBF | 4x5 QFN-20 | E | $3.61 | |
| LTC3835IFE#PBF | TSSOP-20 | I | $6.14 | $4.30 |
| LTC3835IFE#TRPBF | TSSOP-20 | I | $4.36 | |
| LTC3835IUFD#PBF | 4x5 QFN-20 | I | $6.14 | $4.30 |
| LTC3835IUFD#TRPBF | 4x5 QFN-20 | I | $4.35 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC967B | LTC3835EFE Demo Board | 4.5V ≤ VIN ≤ 36V, Vout = 3.3V @ 5A | Contact Factory |
- LTC3835 Package Drawing LTC3835
- DN1014 - 80µA Quiescent Current Synchronous Step-Down Controller Extends Battery Life in Automotive Applications
- R384 Reliability Data
- High Power DC/DC Step-Down Controller Draws only 80uA in Sleep Mode
- LTC3835 Footprints and Symbols
- LTC3835 Demo Circuit - Low IQ Synchronous Step-Down Controller (4.5-32V to 3.3V @ 5A)
