TPS61240TDRVRQ1 Description

The TPS61240-Q1 device is a high efficiency synchronous step up DC-DC converter designed for devices powered by either a one-cell Li-Ion or Li-Polymer battery or a three-cell alkaline, NiCd, or NiMH battery. Up to 450 mA of output current can be supported by the TPS61240-Q1. The maximum input valley current for the TPS61240-Q1 is 500 mA.

The TPS61240-Q1 device supports batteries with an extended voltage range and offers a fixed output voltage of 5V-typ with an input voltage range of 2.3 V to 5.5 V. The load is totally severed from the battery upon shutdown. Based on a quasiconstant on-time valley current mode control strategy, the TPS61240-Q1 boost converter is designed. When turned off, the TPS61240-Q1 exhibits a high impedance at the VOUT pin. This makes it possible to utilize the TPS61240-Q1 in applications where the regulated output bus must be driven by a different supply when it is turned off.

TPS61240TDRVRQ1 Features

• Efficiency > 90% at nominal operating conditions

• Total DC Output Voltage Accuracy 5 V ±2%

• Typical 30-μA quiescent current

• Best in class line and load transient

• Wide VIN range from 2.3 V to 5.5 V

• Output current up to 450 mA

• Automatic PFM/PWM mode transition

• Low ripple power save mode for improved efficiency at light loads

• Internal soft start, 250 μs typical start-up time

• 3.5-MHz typical operating frequency

• Load disconnect during shutdown

• Current overload and thermal shutdown protection

• Only three surface-mount external components required (one MLCC inductor, two ceramic capacitors)

• Total solution size < 13 mm2

• Available in a 2 mm × 2 mm WSON package

TPS61240TDRVRQ1 Applications

• Advanced driver assistance systems (ADAS)

– Front camera

– Surround view system ECU

– Radar and LIDAR

• Automotive infotainment and cluster

– Head unit

– HMI and display

• Body electronics and lighting

• Factory automation and control