TPS7B7050QPWPRQ1

The TPS7B70-Q1 is a 300mA low-dropout (LDO) linear regulator powered by an automotive battery. The device features a quiescent current of only 19μA under light-load conditions, making the TPS7B70-Q1 an excellent choice for powering always-on components such as MCUs and CAN transceivers. The TPS7B70-Q1 has an input voltage range extended to 40V, enabling the device to withstand transient conditions such as load dump. The device also features a power-good (PG) pin that notifies the system once the output voltage is regulated. The PG threshold voltage and delay are adjustable to achieve the required operation. The threshold voltage of the PG signal is set via external resistors, while the delay is adjusted using an external capacitor. The device operates over an ambient temperature range of -40°C to +125°C with a junction temperature range of -40°C to +150°C. Additionally, the device features a thermally enhanced package that enables sustained operation even under high power dissipation — a typical characteristic of battery-powered applications. These features, combined with integrated current limiting and thermal shutdown protection, make the TPS7B70-Q1 an excellent choice for powering automotive system components.

Applications

• Body Control Module (BCM)
• EV and HEV Battery Management Systems
• Transmission Control Unit (TCU)
• Audio Head Unit
• Electric Power Steering (EPS)

Key features

• Qualified for automotive applications with the following AEC-Q100 compliant results
• Device temperature grade 1: ambient operating temperature range of -40°C to 125°C
• Device HBM ESD classification level 2
• Device CDM ESD classification level C4B
• Device junction temperature range: -40°C to +150°C
• Maximum output current: 300mA
• 4V to 40V wide VIN input voltage range, transient voltage up to 45V
• Fixed output voltages of 3.3V and 5V
• Maximum dropout voltage: 400mV (at 300mA)
• Stable with output capacitors across wide capacitance (4.7μF to 500μF) and ESR (0.001Ω to 20Ω) ranges
• Low quiescent current (IQ): <4μA when EN is low (shutdown mode), 19μA (typical) under light load (VINT high)
• Fully adjustable power-good threshold and power-good delay timing
• Low input voltage tracking for undervoltage lockout (UVLO)
• Integrated fault protection
• Overload current limiting
• Thermal shutdown
• 16-pin HTSSOP PowerPAD package thermal resistance (RθJA): 39.7°C/W