●The TPS61240-Q1 device is a high efficient synchronous step up DC-DC converter optimized for products powered by either a three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-Polymer battery. The TPS61240-Q1 supports output currents up to 450 mA. The TPS61240-Q1 has an input valley current limit of 500 mA.
●TPS61240-Q1 device provides fixed output voltage of 5V-typ with an input voltage range of 2.3 V to 5.5 V and the device supports batteries with extended voltage range. During shutdown, the load is completely disconnected from the battery. The TPS61240-Q1 boost converter is based on a quasi-constant on-time valley current mode control scheme.
●The TPS61240-Q1 presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the TPS61240-Q1 is shut down.
●During light loads the device will automatically pulse skip allowing maximum efficiency at lowest quiescent currents. In the shutdown mode, the current consumption is reduced to less than 1 µA.
●TPS61240-Q1 allows the use of a small inductor and capacitors to achieve a small solution size. The TPS61240-Q1 is available in a 2 mm × 2 mm WSON package.
● Qualified for Automotive Applications
● Efficiency > 90% at Nominal Operating Conditions
● Total DC Output Voltage Accuracy 5.0 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 Softstart, 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
