SBVS199C June 2012 – January 2024 TLC59283
PRODUCTION DATA
The constant-current values are determined by an external resistor (RIREF) placed between IREF and GND. The resistor (RIREF) value is calculated by Equation 1.
Where:
VIREF = the internal reference voltage on the IREF pin (typically 1.208V)
IOLC must be set in the range of 2mA to 35mA when VCC is less than 3.6V. Also, when VCC is equal to 3.6V or greater, IOLC must be set in the range of 2mA to 45mA. The constant sink current characteristic for the external resistor value is illustrated in Figure 5-4. Table 7-1 describes the constant-current output versus external resistor value.
IOLC (mA) | RIREF (kΩ, Typical) |
---|---|
45 (VCC > 3.6V only) | 1.18 |
40 (VCC > 3.6V only) | 1.32 |
35 | 1.51 |
30 | 1.76 |
25 | 2.12 |
20 | 2.65 |
15 | 3.53 |
10 | 5.29 |
5 | 10.6 |
2 | 26.5 |