TL431, TL431A, TL431B
TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543J − AUGUST 2004 − REVISED DECEMBER 2005
electrical characteristics over recommended operating conditions, T
A
= 25°C (unless otherwise
noted)
PARAMETER
Vref
Reference voltage
TEST
CIRCUIT
2
2
TEST CONDITIONS
MIN
VKA = Vref,
IKA = 10 mA
SOT23-3 and TL432
devices
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
2440
TL431I
TL432I
TYP
2495
14
5
−1.4
−1
2
0.8
MAX
2550
34
50
−2.7
−2
4
2.5
mV
V
µA
µA
mV
mV
UNIT
Deviation of reference voltage
VI(dev) over full temperature range
(see Figure 1)
DV
ref
DV
KA
Iref
II(dev)
Imin
Ioff
|zKA|
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)
VKA = Vref,
IKA = 10 mA,
TA = −40°C to 85°C All other devices
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
1
1
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
2440
TL431Q
TL432Q
TYP
2495
14
−1.4
−1
2
0.8
MAX
2550
34
−2.7
−2
4
2.5
mV
mV
UNIT
VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C
IKA = 10 mA
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
3
3
3
mV
V
µA
µA
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞,
TA = −40°C to 125°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
1
1
0.5
mA
µA
Ω
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
13
TI [ TEXAS INSTRUMENTS ]
