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Description

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1 Description

The TPS22933AEVM-001 evaluation module helps designers evaluate the operation and performance of

the TPS22933A triple-input multiplexer with LDO. The board features the small 8-pin µQFN package for a

small solution size. The TPS22933A LDO has one always on output (LOUT) and one switched output

(VOUT). VOUT is enabled through the EN pin. When VOUT is disabled, the internal quick output

discharge FET (QOD) is enabled to drain any residual voltage from the output.

Table 1. TPS22933A LDO Voltage Options

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EVM Device LOUT (V)

HVL005 TPS22933A 3.6 V

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Contact Factory for additional LDO output options.

1.1 Typical Applications

• Hand-held devices with multiple input sources (such as a battery, a USB port and a DC In jack).

1.2 Features

• Three integrated load switches automatically choose highest input

• Integrated 3.6V fixed LDO (contact factory for other LDO voltages)

• Switched and Always on LDO outputs

• Small µQFN package (1.5mm x 1.5mm)

• Input voltage range 2.5V to 12V

• Low ON-resistance (2.4Ω at 5V)

• 50mA max continuous current (split between LOUT and VOUT)

• Low threshold control input (EN)

• Switchover time 18µs typical

• Switchover voltage 150mV typical

2 Electrical Performance

Table 2. TPS22633AEVM-005 Electrical Performance

PARAMETER TEST CONDITIONS

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MIN TYP MAX UNITS

Input Characteristics

Voltage range 2.5 12 V

Maximum input current 50 mA

Electrical Characteristics

Output voltage, LOUT I

LOUT

= 10 mA, VIN = 4.2 V 3.6 V

Output voltage, VOUT I

VOUT

= 10 mA, VIN = 4.2 V 3.6 V

ON resistance (Input to CAP) VIN = 5.0 V, IOUT = 10 mA 2.4 Ω

ON resistance (LDO to VOUT) IOUT = 10 mA 1.3 Ω

Pull-down resistance (VOUT to GND) EN = 0 V 63.8 Ω

Systems Characteristics

Switching Time 18 µs

Switching Voltage VBAT = 4.2 V, VUSB rising from 4 V to 5 V 150 mV

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VIN = highest of BAT, USB, DC_IN

Using the TPS22933AEVM-005 Triple-Input Power Multiplexer with Auto-Select SLVU589– October 2011

and Integrated LDO

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