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1. Description
The TPS65000RTET 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.
2. Features
1. 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
2. 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
3. Supply Voltage Supervisor (TPS65001)
– Manual Reset Input for Push Button
– Adjustable Reset Time
– Adjustable Reset Voltage
4. 3-mm × 3-mm 16-Pin WQFN (TPS65000)
5. 3-mm × 3-mm 20-Pin WQFN (TPS65001)
3. Applications
1. Points-of-Load
2. Embedded Processor Power
3. Cell Phones
4. Smart Phones
5. PDAs
6. Pocket PCs
7. Portable Media Players
