SLVS905B December 2008 – July 2024 TLV431A-Q1 , TLV431B-Q1
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Pin Configuration and Functions
- 5 Specifications
- 6 Parameter Measurement Information
- 7 Detailed Description
- 8 Applications and Implementation
- 9 Device and Documentation Support
- 10Revision History
- 11Mechanical, Packaging, and Orderable Information
5.6 Electrical Characteristics for TLV431B-Q1
at 25°C free-air temperature (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | TLV431BQ | UNIT | |||||
|---|---|---|---|---|---|---|---|---|
| MIN | TYP | MAX | ||||||
| VREF | Reference voltage | VKA = VREF, IK = 10mA | TA = 25°C | 1.234 | 1.24 | 1.246 | V | |
| TA = full range(1) (see Figure 6-1) | 1.221 | 1.265 | ||||||
| VREF(dev) | VREF deviation over full temperature range(2) | VKA = VREF , IK = 10mA(1) (see Figure 6-1) | 11 | 31 | mV | |||
 | Ratio of VREF change in cathode voltage change | VKA = VREF to 6V, IK = 10mA (see Figure 6-2) | –1.5 | –2.7 | mV/V | |||
| Iref | Reference terminal current | IK = 10mA, R1 = 10kΩ, R2 = open (see Figure 6-2) | 0.1 | 0.5 | µA | |||
| Iref(dev) | Iref deviation over full temperature range(2) | IK = 10mA, R1 = 10kΩ, R2 = open (see Figure 6-2) | 0.15 | 0.5 | µA | |||
| IK(min) | Minimum cathode current for regulation | VKA = VREF (see Figure 6-1) | 55 | 100 | µA | |||
| IK(off) | Off-state cathode current | VREF = 0, VKA = 6V (see Figure 6-3) | 0.001 | 0.1 | µA | |||
| |zKA| | Dynamic impedance(3) | VKA = VREF,
f ≤ 1kHz, IK = 0.1mA to 15mA (see Figure 6-1) | 0.25 | 0.4 | Ω | |||
(1) Full temperature range is –40°C to 125°C for TLV431x-Q1.
(2) The deviation parameters VREF(dev) and Iref(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as:
where ΔTA is the rated operating free-air temperature range of the device.
αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower temperature.
where ΔTA is the rated operating free-air temperature range of the device.
αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower temperature.
(3) The dynamic impedance is defined as
When the device is operating with two external resistors (see Figure 6-2), the total dynamic impedance of the circuit is defined as:
When the device is operating with two external resistors (see Figure 6-2), the total dynamic impedance of the circuit is defined as: