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.
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|Part number||Order||Vin (Min) (V)||Vin (Max) (V)||Vout (Min) (V)||Vout (Max) (V)||Switch current limit (Typ) (A)||Regulated outputs (#)||Switching frequency (Min) (kHz)||Switching frequency (Max) (kHz)||Iq (Typ) (mA)||Features||Duty cycle (Max) (%)||Operating temperature range (C)||Type||Rating||Package Group|
Light Load Efficiency
-40 to 105
-40 to 85
|Converter||Automotive||WSON | 6|
Light Load Efficiency
|100||-40 to 125||Converter||Automotive||VSON | 10|
|TPS61040-Q1||Samples not available||1.8||6||1.8||28||0.4||1||50||1000||0.028||Enable||88||-40 to 125||Converter||Automotive||SOT-23 | 5|
|TPS61041-Q1||Samples not available||1.8||6||1.8||28||0.25||1||50||1000||0.028||Enable||88||-40 to 125||Converter||Automotive||SOT-23 | 5|
||0.9||5.5||1.8||5.5||0.7||1||1200||1200||0.019||Synchronous Rectification||100||-40 to 105||Converter||Automotive||SOT-23-THIN | 6|