TL431B Datasheet, PDF (8/40 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS

TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
equivalent schematic^†
CATHODE
800 Ω
REF
2.4 kΩ
3.28 kΩ
4 kΩ
7.2 kΩ
20 pF
800 Ω
20 pF
150 Ω
10 kΩ
ANODE
† _{All component values are nominal.}
800 Ω
1 kΩ
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^‡
Cathode voltage, V_KA (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 V
Continuous cathode current range, I_KA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −100 mA to 150 mA
Reference input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 µA to 10 mA
Operating virtual junction temperature, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
‡ _{Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and}
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: Voltage values are with respect to the ANODE terminal, unless otherwise noted.
package thermal data (see Note 2)
PACKAGE
PDIP (P)
BOARD
High K, JESD 51-7
θ_JC
57°C/W
θ_JA
85°C/W
SOIC (D)
High K, JESD 51-7
39°C/W
97°C/W
SOP (PS)
High K, JESD 51-7
46°C/W
95°C/W
SOT-89 (PK)
High K, JESD 51-7
9°C/W
52°C/W
SOT-23-5 (DBV)
High K, JESD 51-7
131°C/W
206°C/W
SOT-23-3 (DBZ)
High K, JESD 51-7
TBD
TBD
TO-92 (LP)
High K, JESD 51-7
55°C/W
140°C/W
TSSOP (PW)
High K, JESD 51-7
65°C/W
149°C/W
NOTE 2: Maximum power dissipation is a function of TJ(max), θ_JA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) − TA)/θ_JA. Operating at the absolute maximum TJ of 150°C can affect reliability.
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