Refer to the PDF data sheet for device specific package drawings
The TPS7B84-Q1 is a low-dropout linear
regulator designed to connect to the battery in automotive applications. The device
has an input voltage range extending to 40 V, which allows the device to withstand
transients (such as load dump) that are anticipated in automotive systems. With only
an
18-µA quiescent current, the device is an optimal
solution for powering always-on components such as microcontrollers (MCUs) and
controller area network (CAN) transceivers in standby systems.
The TPS7B84-Q1 has both fixed and adjustable output types. The wide output voltage range allows the device to generate the bias voltage for silicon carbide (SiC) gate drivers and microphones as well as power MCUs and processors.
The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.75% over line, load, and temperature.
The device is available in both a SOT223 package and a small VSON package with wettable flanks that facilitates a compact printed circuit board (PCB) design. The low thermal resistance enables sustained operation despite significant dissipation across the device.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS7B84-Q1 | VSON (8) | 3.00 mm × 3.00 mm |
SOT-223 (4) | 6.50 mm × 3.50 mm |
Changes from Revision * (April 2020) to Revision A (November 2020)
PIN | TYPE(1) | DESCRIPTION | ||
---|---|---|---|---|
NAME | DCY | DRB | ||
EN | 2 | 7 | I | Enable pin. The device is disabled when the enable pin becomes lower than the enable logic input low level (VIL). To ensure the device is enabled, the EN pin must be driven above the logic high level (VIH). This pin should not be left floating as this pin is high impedance if it is left floating the part may enable or disable. |
GND | 4 | 5 | G | Ground pin. Connect this pin to the thermal pad with a low-impedance connection. |
FB/NC | — | 2 | I | Feedback pin when using an external resistor divider or an NC pin when using the device with a fixed output voltage. When using the adjustable device this pin must be connected through a resistor divider to the output for the device to function. |
NC | __ | 3, 4, 6 | __ | No internal connection. Connect these pins to GND for the best thermal performance. |
IN | 1 | 8 | I | Input power-supply voltage pin. For best transient response and to minimize input impedance, use the recommended value or larger ceramic capacitor from IN to ground as listed in the Recommended Operating Conditions table and the Section 8.2.2.1 section. Place the input capacitor as close to the input of the device as possible. |
OUT | 3 | 1 | O | Regulated output voltage pin. A capacitor is required from OUT to ground for stability. For best transient response, use the nominal recommended value or larger ceramic capacitor from OUT to ground; see the Recommended Operating Conditions table and the Section 8.2.2.2 section. Place the output capacitor as close to output of the device as possible. If using a high ESR capacitor, decouple the output with a 100-nF ceramic capacitor. |
Thermal pad | — | Pad | — | Thermal pad. Connect the pad to GND for the best possible thermal performance. See the Section 10 section for more information. |