| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 28 Pin |
| Supply Voltage (DC) | 4.00V (min) |
| Case/Package | QFN-28 |
| Number of Outputs | 2 Output |
| Output Voltage | 0.8V ~ 23.32V |
| Output Current | 25 A |
| Number of Positions | 28 Position |
| Switching Frequency | 860 kHz |
| Duty Cycle | 97.2 % |
| Input Voltage (Max) | 30 V |
| Input Voltage (Min) | 4 V |
| Maximum Duty Cycle | 0.972 |
| Operating Temperature (Max) | 85 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage | 4V ~ 30V |
| Supply Voltage (Max) | 30 V |
| Supply Voltage (Min) | 4 V |
| Input Voltage | 4V ~ 30V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Unknown |
| Packaging | Cut Tape (CT) |
| Operating Temperature | -40℃ ~ 85℃ |
The LTC3850IUF#PBF is a high-performance dual synchronous step-down Switching Regulator Controller that drives all N-channel power MOSFET stages. The constant-frequency current-mode architecture allows a phase-lockable frequency of up to 780kHz. Power loss and supply noise are minimized by operating the two controller output stages out of phase. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3850 features a precision 0.8V reference and a power good output indicator. A wide 4 to 24V (28V maximum/30V for LTC3850I) input supply range encompasses most battery chemistries and intermediate bus voltages. Independent TK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.
● Dual 180° Phased controllers reduce required input capacitance and power supply induced noise
● RSENSE or DCR current sensing
● Supports pre-biased output
● Dual N-channel MOSFET synchronous drive
● Adjustable soft-start current ramping or tracking
● Foldback output current limiting
● Output overvoltage protection
● Power good output voltage monitor
Linear Technology
38 Pages / 0.57 MByte
Linear Technology
DC-DC converter; step down; Uin:4÷24V; Uout:0.8÷6V; 25A; SSOP28
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DC-DC converter; step down; Uin:4÷24V; Uout:0.8÷6V; 25A; QFN28
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