STP1612PW05 STMicroelectronics, STP1612PW05 Datasheet - Page 23

• Manufacturer Part Number: STP1612PW05
• Description: 16-channel LED driver with 16-bit PWM, 8-bit gain and full LED error detection
• Manufacturer: STMicroelectronics

Specifications of STP1612PW05

• Supply Voltage: 3.3 V or 5 V
• Max Clock Frequency: 30 MHz

STP1612PW05
12
Constant current
The STP1612PW05 assures nearly no variation in current both from channel to channel and
from IC to IC.
The typical variation of the current between channels of the same IC is ±1.5%, whereas the
variation between ICs is around ±3%.
Moreover the current characteristic of the output stage is flat (see
This contributes to keep the current constant regardless of the variation of the LEDs forward
voltage (V
Figure 14. I
Figure 15. I
The typical characteristics in
required to assure that the current generators regulate the desired current.
This must be taken into account when choosing the suitable value of the LED supply voltage
(see dedicated section).
F
) and consequently guarantees uniformity of brightness.
OUT
OUT
vs voltage drop across current generators (3.3 V supply voltage)
vs voltage drop across current generators (5 V supply voltage)
Figure 14
Doc ID 15819 Rev 5
and
Figure 15
also show the minimum voltage drop
Figure 14
Constant current
and
Figure
23/41
15).