1 Features

• Step-Down Converters:
  • V_IN Range From 2.3 V to 6 V
  • Spread Spectrum Clock (SSC) Generation for Reduced EMI
  • 2.25-MHz Fixed Frequency Operation
  • 600-mA or 1-A (TPS650061) Output Current
• Low Dropouts (LDOs):
  • V_IN Range From 1.6 V to 6 V
  • Adjustable Output Voltage
  • Up to 300-mA Output Current
  • Separate Power Inputs and Enables
• Supply Voltage Supervisor (TPS65001)
  • Manual Reset Input for Push Button
  • Adjustable Reset Time
  • Adjustable Reset Voltage
• 3-mm × 3-mm 16-Pin WQFN (TPS65000)
• 3-mm × 3-mm 20-Pin WQFN (TPS65001)

2 Applications

• Points-of-Load
• Embedded Processor Power
• Cell Phones
• Smart Phones
• PDAs
• Pocket PCs
• Portable Media Players

3 Description

The TPS6500xx devices are single-chip power management (PWM) ICs for portable applications. Both devices combine a single step-down converter with two low-dropout (LDO) regulators. The 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 through a pin. The step-down converter is small because of its small inductor and capacitors. The step-down converter has power good status output for sequencing. The LDOs can supply 300 mA and operate with an input voltage range from 1.6 V to 6 V. A step-down converter or main battery can power the LDOs directly. The step-down converter and the LDOs have separate voltage inputs that enable maximum design and sequencing flexibility.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Application Circuit