SLVS543J − AUGUST 2004 − REVISED DECEMBER 2005
TL431, TL431A, TL431B
TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
electrical characteristics over recommended operating conditions, T
A
= 25°C (unless otherwise
noted)
PARAMETER
Vref
VI(dev)
DV
ref
DV
KA
Iref
II(dev)
Imin
Ioff
|zKA|
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
Ratio of change in reference voltage
to the change in cathode voltage
Reference current
Deviation of reference current
over full temperature range
(see Figure 1)
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance (see Figure 1)
TEST
CIRCUIT
2
2
TEST CONDITIONS
MIN
VKA = Vref,
VKA = Vref,
IKA = 10 mA,
TA = 0°C to 70°C
IKA = 10 mA
IKA = 10 mA
SOT23-3, SC-70,
and TL432 devices
All other devices
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
2470
TL431AC
TL432AC
TYP
2495
6
4
−1.4
−1
2
0.8
MAX
2520
16
25
−2.7
−2
4
1.2
mV
V
µA
µA
mV
mV
UNIT
3
3
3
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞,
TA = 0°C to 70°C
VKA = Vref
VKA = 36 V,
Vref = 0
IKA = 1 mA to 100 mA, VKA = Vref,
f
≤
1 kHz
2
4
1
0.4
0.1
0.2
0.6
0.5
0.5
mA
µA
Ω
electrical characteristics over recommended operating conditions, T
A
= 25°C (unless otherwise
noted)
PARAMETER
Vref
VI(dev)
DV
ref
DV
KA
Iref
II(dev)
Imin
Ioff
|zKA|
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
Ratio of change in reference voltage
to the change in cathode voltage
Reference current
Deviation of reference current
over full temperature range
(see Figure 1)
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance (see Figure 1)
TEST
CIRCUIT
2
2
TEST CONDITIONS
MIN
VKA = Vref,
IKA = 10 mA
SOT23-3, SC-70,
and TL432 devices
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
2470
TL431AI
TL432AI
TYP
2495
14
5
−1.4
−1
2
0.8
MAX
2520
34
50
−2.7
−2
4
2.5
mV
V
µA
µA
mV
mV
UNIT
VKA = Vref,
IKA = 10 mA,
TA = −40°C to 85°C All other packages
IKA = 10 mA
3
3
3
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞,
TA = −40°C to 85°C
VKA = Vref
VKA = 36 V,
Vref = 0
IKA = 1 mA to 100 mA, VKA = Vref,
f
≤
1 kHz
2
4
2
0.4
0.1
0.2
0.7
0.5
0.5
mA
µA
Ω
14
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
