STMicroelectronics L4971D
The L4971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 3.3V and 50V (selected by a simple external divider).| Part No. | L4971D |
|---|---|
| Datasheet | L4971D Download |
| Manufacturer |  STMicroelectronics |
| Description | 1.5A STEP DOWN SWITCHING REGULATOR |
| Buy | Stock & Price |
FEATURES
● UP TO 1.5A STEP DOWN CONVERTER● OPERATING INPUT VOLTAGE FROM 8V TO 55V
● PRECISE 3.3V (±1%) INTERNAL REFERENCE VOLTAGE
● OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V
● SWITCHING FREQUENCY ADJUSTABLE UP TO 300KHz
● VOLTAGE FEEDFORWARD
● ZERO LOAD CURRENT OPERATION
● INTERNAL CURRENT LIMITING (PULSE- BYPULSE AND HICCUP MODE)
● INHIBIT FOR ZERO CURRENT CONSUMPTION
● PROTECTION AGAINST FEEDBACK DISCONNECTION
● THERMAL SHUTDOWN
● SOFT START FUNCTION 2
DESCRIPTION
Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25Ω) to obtain very high efficency and high switching speed. Figure 1. Package DIP8 Table 1. Order Codes Part Number L4971 L4971D L4971D013TR SO16W Package DIP8 SO16W SO16 in Tape & Reel A switching frequency up to 300KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 50V cover the majority of today’s applications.
