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TLV431ACLPR Datasheet(PDF) 6 Page - Texas Instruments |
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TLV431ACLPR Datasheet(HTML) 6 Page - Texas Instruments |
6 / 31 page TLV431, TLV431A, TLV431B LOW VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR SLVS139S − JULY 1996 − REVISED JANUARY 2006 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TLV431 electrical characteristics at 25 °C free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS TLV431 UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TA = 25°C 1.222 1.24 1.258 VREF Reference voltage VKA = VREF, TA = full range TLV431C 1.21 1.27 V VREF Reference voltage VKA = VREF, IK = 10 mA TA = full range (see Note 4 and Figure 1) TLV431I 1.202 1.278 V IK = 10 mA (see Note 4 and Figure 1) TLV431Q 1.194 1.286 VREF deviation over full VKA = VREF, IK = 10 mA TLV431C 4 12 VREF(dev) VREF deviation over full temperature range (see Note 4) VKA = VREF, IK = 10 mA (see Note 4 and Figure 1) TLV431I 6 20 mV VREF(dev) temperature range (see Note 4) (see Note 4 and Figure 1) TLV431Q 11 31 mV ∆VREF ∆VKA Ratio of VREF change in cathode voltage change VKA = VREF to 6 V, IK = 10 mA (see Figure 2) − 1.5 − 2.7 mV/V Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2) 0.15 0.5 µA TLV431C 0.05 0.3 Iref deviation over full IK = 10 mA, R1 = 10 kΩ, R2 = open TLV431C 0.05 0.3 Iref(dev) Iref deviation over full temperature range (see Note 4) IK = 10 mA, R1 = 10 kΩ, R2 = open (see Note 4 and Figure 2) TLV431I 0.1 0.4 µA Iref(dev) temperature range (see Note 4) (see Note 4 and Figure 2) TLV431Q 0.15 0.5 µA IK(min) Minimum cathode current for VKA = VREF (see Figure 1) TLV431C/I 55 80 A IK(min) Minimum cathode current for regulation VKA = VREF (see Figure 1) TLV431Q 55 100 µA IK(off) Off-state cathode current VREF = 0, VKA = 6 V (see Figure 3) 0.001 0.1 µA |zKA| Dynamic impedance (see Note 5) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 15 mA (see Figure 1) 0.25 0.4 Ω NOTES: 4. Full temperature ranges are − 40 °C to 125°C for TLV431Q, −40°C to 85°C for TLV431I, and 0°C to 70°C for TLV431C. 5. 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: αV REF ppm °C + V REF(dev) V REF (TA+25°C) 106 ∆T A where ∆TA 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. 6. The dynamic impedance is defined as z ka + ∆V KA ∆I K When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined as: z ka + ∆V ∆I [ z ka 1 ) R1 R2 |
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