| TYPE | DESCRIPTION |
|---|
| Mounting Style | Through Hole |
| Number of Pins | 8 Pin |
| Case/Package | DIP-8 |
| Number of Outputs | 1 Output |
| Output Voltage | 3.3V ~ 50V |
| Output Current | 1.5 A |
| Number of Positions | 8 Position |
| Quiescent Current | 4 mA |
| Switching Frequency | 100 kHz |
| Topology | Buck |
| Input Voltage (Max) | 55 V |
| Input Voltage (Min) | 8 V |
| Output Voltage (Max) | 50 V |
| Output Voltage (Min) | 3.3 V |
| Output Current (Max) | 1.5 A |
| Operating Temperature (Max) | 150 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage | 8 V |
| Input Voltage | 8V ~ 55V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tube |
| Size-Length | 10.92 mm |
| Size-Width | 6.6 mm |
| Size-Height | 3.32 mm |
| Operating Temperature | -40℃ ~ 150℃ (TJ) |
The L4971 is a step-down monolithic power Switching Regulator delivering 1.5A at a voltage between 3.3 and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25R) to obtain very high efficiency and high switching speed. A switching frequency up to 300kHz is achievable. A wide input voltage range between 8 to 55V and output voltages regulated from 3.3 to 50V cover the majority of today"s applications. Features of this new generation of DC-to-DC converter include pulse-by-pulse current limit, hiccup mode for short-circuit protection, voltage feed-forward regulation, soft-start, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.
● Protection against feedback disconnection
● Inhibit for zero current consumption
● Soft-start function
● Zero load current operation
● Precise 3.3V (±1%) internal reference voltage
● Internal current limiting (pulse-by pulse and hiccup mode)
ST Microelectronics
13 Pages / 0.55 MByte
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25 Pages / 1.66 MByte
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