TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
electrical characteristics over recommended operating conditions, T
A
= 25°C (unless otherwise
noted)
PARAMETER
Vref
Reference voltage
TEST
CIRCUIT
2
2
TL431I, TL432I
TEST CONDITIONS
VKA = Vref,
IKA = 10 mA
SOT23-3 and TL432
devices
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
MIN
2440
TYP
2495
14
5
−1.4
−1
2
0.8
MAX
2550
34
50
−2.7
−2
4
2.5
mV
V
µA
µA
UNIT
mV
mV
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
TL431Q, TL432Q
TEST CONDITIONS
VKA = Vref,
IKA = 10 mA
MIN
2440
TYP
2495
14
−1.4
−1
2
0.8
MAX
2550
34
−2.7
−2
4
2.5
UNIT
mV
mV
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
11
TI [ TEXAS INSTRUMENTS ]
