TS4604 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TS4604

Stereo headset driver and analog audio line driver with integrated reference to ground

STMicroelectronics 

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Application information

For example, to obtain Vuvp = 3.3 V with a hysteresis of 200 mV:

● R1 = 1 kΩ

● R2 = 1.6 kΩ

● R3 = 15 kΩ

Figure 49. External UVLO

Vcc

External sense voltage

1.6 k

R2

5 µA

15 k

R3

1k

R1

+

-

Precision

band gap

1.25 V

TS4604

Figure 50. Hysteresis of the external UVLO

Icc

VHyst

TS4604

AM06143

Vuvp

External sense

voltage

AM06144

When the external sense voltage (ESV) increases, the TS4604 stays in standby mode until

the EUVP pin reaches 1.25 V (voltage across the divider R1, R2). At this point, the TS4604

starts, as does the internal 5 µA current source connected to the EUVP pin. Thanks to this

5 µA current, a voltage drop is created across the R3 resistor.

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Doc ID 17913 Rev 1

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