The TPS65051-Q1 device is an integrated power-management IC for applications powered by one Li-Ion or Li-Polymer cell, which requires multiple power rails. The TPS65051-Q1 device provides two efficient, 2.25-MHz step-down converters targeted at providing the core voltage and I/O voltage in a processor-based system. Both step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents.
For low-noise applications, the user can force the devices into fixed-frequency PWM mode by pulling the MODE pin high. Operating in the shutdown mode reduces the current consumption to less than 1 μA. The devices allow the use of small inductors and capacitors to achieve a small solution size. The TPS65051-Q1 device provides an output current of up to 1 A (DCDC1) and 0.6 A (DCDC2). The TPS65051-Q1 device also integrates two 400-mA LDO and two 200-mA LDO voltage regulators, which one can turn on or off using separate enable pins on each LDO. Each LDO operates with an input voltage range between 1.5 V and 6.5 V, allowing the supply to be from one of the step-down converters or directly from the main battery.
The LDO voltage of the TPS65051-Q1 device is adjustable using external resistor dividers.For all available packages, see the orderable addendum at the end of the datasheet.
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|Part number||Order||Regulated outputs (#)||Processor supplier||Processor name||Vin (Min) (V)||Vin (Max) (V)||Step-up DC/DC controller||Step-down DC/DC controller||LDO||Step-up DC/DC converter||Step-down DC/DC converter||Iout (Max) (A)||Iq (Typ) (mA)||Features||Shutdown current (Typ) (uA)||Rating||Operating temperature range (C)||Configurability||Package Group||Package size: mm2:W x L (PKG)|
||6||Freescale||IMX25||1.5||6.5||0||0||4||0||2||1||2.4||Automotive||-40 to 125||Hardware configurable||VQFN | 32||32VQFN: 16 mm2: 4 x 4 (VQFN | 32)|
||6||Samsung||S3C2410/2/3||1.5||6.5||0||0||4||0||2||0.6||2.4||Catalog||-40 to 85||Hardware configurable||VQFN | 32||32VQFN: 16 mm2: 4 x 4 (VQFN | 32)|
|1.5||6.5||0||0||3||0||2||1||0.02||9||Catalog||-40 to 85||Hardware configurable||VQFN | 24||24VQFN: 16 mm2: 4 x 4 (VQFN | 24)|
||6||1.5||6.5||0||0||4||0||2||0.6||1.25||I2C Control||Catalog||-40 to 85||Hardware configurable||VQFN | 32||32VQFN: 16 mm2: 4 x 4 (VQFN | 32)|