TPS65051RSMR

Product Summary

The TPS65051RSMR is a 6-channel power mgmt IC. The TPS65051RSMR is integrated Power Management ICs for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. The TPS65051RSMR provides two efficient, 2.25-MHz step-down converters targeted at providing the core voltage and I/O voltage in a processor based voltage and I/O voltage in a processor based power mode at light load for maximum efficiency across the widest possible range of load currents. For low noise applications, the devices can be forced into fixed frequency PWM mode by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 mA. The devices allow the use of small inductors and capacitors to achieve a small solution size. TPS65051RSMR provides an output current of up to 1 A on each DC/DC converter. The TPS65051RSMR also integrate two 400-mA LDO and two 200-mA LDO voltage regulators, which can be turned on/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 them to be supplied from one of the step-down converters or directly from the main battery. The applications of the TPS65051RSMR include Cell Phones, Smart-Phones, WLAN, PDAs, Pocket PCs and Portable Media Players.

Parametrics

TPS65051RSMR absolute maximum ratings: (1)Input voltage rang on all pins except AGND, PGND, and EN_LDO1 pins with respect to AGND: -0.3 V to 7 V; (2)Input voltage range on EN_LDO1 pins with respect to AGND: -0.3 V to VCC + 0.5 V; (3)Current at VINDCDC1/2, L1, PGND1, L2, PGND2: 1800 mA; (4)Current at all other pins: 1000 mA; (5)Operating free-air temperature: –40℃ to 85℃; (6)Maximum junction temperature: 125℃; (7)Storage temperature range: –65℃ to 150℃.

Features

TPS65051RSMR features: (1)2.25-MHz Fixed Frequency Operation; (2)Power Save Mode at Light Load Current; (3)Output Voltage Accuracy in PWM mode ±1%; (4)Low Ripple PFM Mode; (5)100% Duty Cycle for Lowest Dropout; (6)VI range for LDOs from 1.5 V to 6.5 V; (7)Digital Voltage Selection for the LDOs.

Diagrams