• Two 400-mA Step-Down Converters
• Up to 95% Efficiency
• VIN Range for DC-DC Converters From 3.6 V to 6 V
• 2.25-MHz Fixed-Frequency Operation
• Power Save Mode at Light Load Current
• Output Voltage Accuracy in PWM mode ±1.5%
• 100% Duty Cycle for Lowest Dropout
• 180° Out-of-Phase Operation
• 2 General Purpose 200-mA LDOs
• LDOs Optionally Powered From Step-Down Converters
• 7.5-mA PWM Dimmable Current Sink
• Available in a 16-Ball DSBGA (WCSP) With 0.5-mm Pitch
• Device Options:
  • VDCDC1 = 3.3 V
  • VDCDC2 = 1.8 V
  • VLDO1 = 2.8 V
  • VLDO2 = 1.2 V
  • ISINK(PWM=1) = 7.5 mA
  • SEQUENCING : DCDC1, LDO1, DCDC2, LDO2

• Monitors
• Laptops
• Handheld Equipment

The TPS65708 device is a power management unit targeted for embedded camera modules or other portable low-power consumer end equipment. The device contains two high-efficiency step-down converters, two low-dropout linear regulators, and a 7.5-mA current sink for driving a LED. The 2.25-MHz step-down converter enters a low-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 using the MODE pin. The device allows the use of small inductors and capacitors to achieve a small solution size. The TPS65708 device provides an output current of up to 400 mA on both DC-DC converters and up to 200 mA on each of the LDOs. The enable signal to the DC-DC converters and LDOs is generated internally by the undervoltage lockout circuit.

The TPS65708 comes in a small 16-pin wafer chip-scale package (WCSP) with 0.5-mm ball pitch.