描述 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.
The TPS65001 extends functionality by adding a supply voltage supervisor (SVS). To maximize the flexibility of the SVS, the reset voltage is set with two external resistors and the reset time is set by a small external capacitor. For external control, the SVS can use its active-low manual reset input to connect to a push button.
The TPS65000 is available in a 16-pin leadless package (3 mm × 3 mm QFN). The TPS65001 is available in a 20-pin leadless package (3 mm × 3 mm QFN).

特性 Features

? Step-Down Converters:
- VIN 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):
- VIN 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)
? APPLICATIONS
- Points-of-Load
? Embedded Processor Power
? Cell Phones
? Smart Phones
? PDAs
? Pocket PCs
? Portable Media Players
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