TPS57040QDGQRQ1 Switch Regulator TI Original From Stock

Characteristics of TPS57040-Q1

Qualified for Automotive Applications

AEC-Q100 Qualified With the Following Results

Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

Device HBM ESD Classification Level 2

Device CDM ESD Classification Level C4B

3.5-V to 42-V Input Voltage Range

200-mΩ High-Side MOSFET

High Efficiency at Light Loads with a Pulse

Skipping Eco-mode ™ Control Scheme

116-µA Operating Quiescent Current

1.5-µA Shutdown Current

100-kHz to 2.5-MHz Switching Frequency

Synchronizes to External Clock

Adjustable Slow Start/Sequencing

Undervoltage and Overvoltage Power-good Output

Adjustable Undervoltage Lockout Voltage and Hysteresis

0.8-V Internal Voltage Reference

Supported by SwitcherPro ™ Software Tool


Description of TPS57040-Q1

The TPS57040-Q1 device is a 42-V 0.5-A step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, input supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.5 µA, when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power-good signal indicates the output is within 92% to 109% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS57040-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD ™ package (DGQ) and a 10-pin SON package (DRC).