STP16CPC26XTR(2013) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STP16CPC26XTR
(Rev.:2013)

Low voltage 16-bit constant current LED sink driver

STMicroelectronics 

Current generators characteristics

STP16CPC26

9.2

Current accuracy

A typical current accuracy of ±1% (±3% maximum) between channels is guaranteed at 22

mA and 55 mA output current (refer to Table 6) and ± 6% (maximum) current accuracy

between ICs.

9.3

Generators voltage drop

In order to correctly regulate the current, a minimum dropout voltage must be assured

across the current generators.

Figure 17 and Table 9 provides just an indicative idea about the dropout voltage to assure

over the current range. However it is recommended to use value of VDROP slightly higher

than those indicated in Figure 17 and Table 9.

Figure 17. Dropout voltage vs output current

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Table 9. Dropout voltage vs output current

Output current [mA]

VDROP @ 3.3V [mV]

5

44

10

85

20

170

40

350

60

530

90

820

VDROP @ 5V [mV]

44

85

170

330

500

770

16/26

Doc ID 18469 Rev 4

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