LF120ABP [STMicroelectronics]

LF120ABP Description

An extremely low drop regulator with a wide variety of output voltages is the LF120ABP, which is offered in TO-220, TO-220FP, DPAK, and PPAK packages. It is especially well suited for low-noise, low-power applications, notably in battery-powered systems, because of the low drop voltage (0.45 V) and low quiescent current. An available shutdown logic control function is in the 5-pin configuration (PPAK) (pin 2, TTL compatible). This implies that a portion of the board can be placed on standby while the device is utilized as a local regulator, reducing the overall power consumption. The gadget still functions electrically in the three terminal configurations, however, it is permanently in the ON position. Only a 2.2 μF capacitor is needed for stability, saving both money and board space. The order codes for the automotive grade LF120ABP show the commercial part numbers for the DPAK and PPAK packages for the various output voltage possibilities. These devices pass the PAT, SYL, and SBL statistical tests and are certified in accordance with the automobile industry's specification AEC-Q100 in the temperature range of 40 °C to 125 °C.

LF120ABP Features

• Automotive grade product: 1.8 V, 2.5 V, 3.3 V, 5.0 V, 8.0 V, 8.5 V VOUT in DPAK and PPAK packages

• Internal current and thermal limit

• Only 2.2 μF for stability

• Available in ± 1% (AB) or ± 2% (C) selection at 25 °C

• Supply voltage rejection: 80 db (typ.)

• Temperature range: from -40 to 125 °C

• Very low-dropout voltage (0.45 V)

• Very low quiescent current (typ. 50 μA in OFF mode, 500 μA in ON mode)

• Output current up to 500 mA

• Logic-controlled electronic shutdown

• Output voltages of 1.5; 1.8; 2.5; 3.3; 4.7; 5; 6; 8; 8.5; 9; 12 V

LF120ABP Applications

• One of the most common examples is the mobile charger. The adapter is supplied with an AC signal. However, the output voltage signal is a regulated DC signal.

• Every power supply in the world uses a voltage regulator to provide the desired output voltage. Computers, televisions, laptops, and all sorts of devices are powered using this concept.

• Small electronic circuits rely on regulators to operate. Even the slightest fluctuation in voltage signal can damage the components of a circuit such as ICs.

• When it comes to power generation systems, voltage regulators play an essential part in their operation. A solar power plant generates electricity based on the intensity of sunlight. It needs a regulator to ensure a regulated constant output signal.