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
– Front camera
– Surround view system ECU
– Radar and LIDAR
– Head unit
– HMI and display
