Step Down Controller 32-Pin VQFN EP T/R

The TPS6505x-Q1 devices are integrated power-management ICs for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. The TPS6505x-Q1 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 TPS6505x-Q1 provides an output current of up to 1 A on each dc-dc converter. The TPS6505x-Q1 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 their supply to be from one of the step-down converters or directly from the main battery.Four digital input pins set the output voltage of the LDOs from a set of 16 different combinations for LDO1 to LDO4 on TPS65050-Q1 and TPS65052-Q1. In TPS65051-Q1, TPS65054-Q1, and TPS65056-Q1, the LDO voltages are adjustable using external resistor dividers.The TPS6505x-Q1 devices come in a small 32-pin leadless package (4-mm × 4-mm QFN) with a 0.4-mm pitch.

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
  • Device Temperature Grade 1: –40°C to 125°C Ambient
  • Operating Temperature Range
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C3B
• Up To 95% Efficiency
• Output Current for DC-DC Converters:
  • TPS65050-Q1: 2 × 0.6 A
  • TPS65051-Q1: DCDC1 = 1 A; DCDC2 = 0.6 A
  • TPS65052-Q1: DCDC1 = 1 A; DCDC2 = 0.6 A
  • TPS65054-Q1: 2 × 0.6 A
  • TPS65056-Q1: DCDC1 = 1 A; DCDC2 = 0.6 A
• Output Voltages for DC-DC Converters:
  • TPS65050-Q1: Externally Adjustable
  • TPS65051-Q1: Externally Adjustable
  • TPS65052-Q1: DCDC1 = Fixed at 3.3 V;DCDC2 = 1 V or 1.3 V for Samsung Application Processors
  • TPS65054-Q1: DCDC1 = Externally Adjustable; DCDC2 = 1.3 V or 1.05 V for OMAP1710 Processor
  • TPS65056-Q1: DCDC1 = Fixed at 3.3 V; DCDC2 = 1 V or 1.3 V for Samsung Application Processors
• VI Range for DC-DC Converters From 2.5 V to 6 V
• 2.25-MHz Fixed-Frequency Operation
• Power-Save Mode at Light Load Current
• 180° Out-of-Phase Operation
• Output-Voltage Accuracy in PWM Mode ±1%
• Low-Ripple PFM Mode
• Total Typical 32-µA Quiescent Current for Both DC-DC Converters
• 100% Duty Cycle for Lowest Dropout
• Two General-Purpose 400-mA, High-PSRR LDOs
• Two General-Purpose 200-mA, High-PSRR LDOs
• VI Range for LDOs from 1.5 V to 6.5 V
• Digital Voltage Selection for the LDOs
• Available in a 4-mm × 4-mm 32-Pin QFN Package