TI TL430CLP

TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050B – JUNE 1976 – REVISED JULY 1999
D
D
D
D
D
Temperature Compensated
Programmable Output Voltage
Low Output Resistance
Low Output Noise
Sink Capability up to 100 mA
LP PACKAGE
(TOP VIEW)
CATHODE
ANODE
description
REF
The TL430 is a 3-terminal adjustable shunt
regulator, featuring excellent temperature
stability, wide operating current range, and low
output noise. The output voltage can be set by two
external resistors to any desired value between
3 V and 30 V. The TL430 can replace zener diodes
in many applications, providing improved
performance.
The TL430C is characterized for operation from
0°C to 70°C.
symbol
REF
ANODE
CATHODE
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
PLASTIC
(LP)
0°C to 70°C
TL430CLP
CHIP FORM
(Y)
TL430Y
The LP package is available taped and reeled. Add R suffix to device
type (e.g., TL430CLPR). Chip forms are tested at 25°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright  1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050B – JUNE 1976 – REVISED JULY 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Regulator voltage (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Continuous regulator current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA
Package thermal impedance, θJA (see Notes 2 and 3): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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.
NOTES: 1. All voltage values are with respect to the anode terminal.
2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.
3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
Regulator voltage, VZ
Regulator current, IZ
Operating free-air temperature range, TA
TL430C
MIN
MAX
UNIT
Vref
2
30
V
100
mA
0
70
°C
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
TEST
FIGURE
PARAMETER
TEST CONDITIONS
VI(ref)
Reference input voltage
1
αVI(ref)
Temperature coefficient of reference input
voltage
VZ = VI(ref),
VZ = VI(ref),
TA = 0°C to 70°C
IZ = 10 mA
IZ = 10 mA,
1
II(ref)
Reference input current
2
IZ = 10 mA,
R2 = ∞
R1 = 10 kΩ,
IZK
Regulator current near lower knee of
regulation range
1
VZ = VI(ref)
IZK
Regulator
g
current at maximum
limit of regulation range
1
VZ = VI(ref)
VZ = 5 V to 30 V,
rz
Differential regulator resistance
(see Note 5)
1
VZ = VI(ref),
∆IZ = (52 – 2) mA
Vn
Noise voltage
2
f = 0.1 Hz to 10 Hz
2
TL430C
MIN
TYP
MAX
2.5
2.75
3
120
3
10
µA
0.5
2
mA
mA
100
1.5
VZ = 3 V
VZ = 12 V
V
ppm/°C
50
See Note 4
UNIT
3
W
50
200
µV
VZ = 30 V
650
NOTES: 4. The average power dissipation, VZ • IZ • duty cycle, must not exceed the maximum continuous rating in any 10-ms interval.
5. The regulator resistance for VZ > VI(ref), rz, is given by:
rz
2
ǒ
Ȁ + rz 1 ) R1
R2
Ǔ
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050B – JUNE 1976 – REVISED JULY 1999
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
TEST
FIGURE
PARAMETER
VI(ref)
Reference input voltage
1
II(ref)
Reference input current
2
IZK
Regulator current near lower knee of
regulation range
1
VZ = VI(ref)
IZK
Regulator
current at maximum limit of
g
regulation range
1
VZ = VI(ref)
VZ = 5 V to 30 V,
rz
Differential regulator resistance (see Note 5)
1
VZ = VI(ref), . . .
∆IZ = (52 – 2) mA
Vn
Noise voltage
2
f = 0.1 Hz to 10 Hz
2
TL430Y
TEST CONDITIONS
VZ = VI(ref),
IZ = 10 mA,
R2 = ∞
IZ = 10 mA
R1 = 10 kΩ,
TYP
MAX
2.5
2.75
3
V
3
10
µA
0.5
2
mA
50
See Note 4
UNIT
MIN
mA
100
1.5
VZ = 3 V
VZ = 12 V
3
W
50
µV
200
VZ = 30 V
650
NOTES: 4. The average power dissipation, VZ • IZ • duty cycle, must not exceed the maximum continuous rating in any 10-ms interval.
5. The regulator resistance for VZ > VI(ref), rz, is given by:
rz
ǒ
Ȁ + rz 1 ) R1
R2
Ǔ
PARAMETER MEASUREMENT INFORMATION
Input
VZ
IZ
Input
R1
VZ
II(ref)
TL430
IZ
R2
VI(ref)
TL430
VI(ref)
V
Figure 1. Test Circuit for VZ = VI(ref)
POST OFFICE BOX 655303
Z
+ VI(ref)
ǒ ) Ǔ)
1
R1
R2
I
I(ref)
R1
Figure 2. Test Circuit for VZ > VI(ref)
• DALLAS, TEXAS 75265
3
TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050B – JUNE 1976 – REVISED JULY 1999
TYPICAL CHARACTERISTICS
SMALL-SIGNAL REGULATOR IMPEDANCE
vs
FREQUENCY
CATHODE CURRENT
vs
CATHODE VOLTAGE
160
VZ = VI(ref)
TA = 25°C
2.8
VZ = VI(ref)
TA = 25°C
140
2.6
I – Cathode Current – mA
z z – Small-Signal Regulator Impedance – Ω
3
2.4
2.2
2
1.8
1.6
IZM
120
100
80
IZ
60
40
20
1.4
102
10
103
104
105
106
IZK
0
0
1
f – Frequency – Hz
2
3
4
V – Cathode Voltage – V
Figure 3
Figure 4
APPLICATION INFORMATION
V+
R
V+
VO
30 Ω
R1
4.7 kΩ
VI(ref)
R2
VO
R1
R2
V
O
[
ǒ) Ǔ
1
R1
R2
V
V
I(ref)
Figure 5. Shunt Regulator
4
POST OFFICE BOX 655303
O
[
ǒ) Ǔ
1
R1
R2
V
I(ref)
Figure 6. Series Regulator
• DALLAS, TEXAS 75265
TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050B – JUNE 1976 – REVISED JULY 1999
APPLICATION INFORMATION
V+
µA7805 Regulator
IN
VO
OUT
GND
RCL
IO
V+
R1
R2
I
O
[
ǒ Ǔ
+ 1 ) R1
V
I(ref)
R2
Min V + V
) 5V
I(ref)
O
V
V
I(ref)
R
CL
Figure 7. Current Limiter
V+
O
Figure 8. Output Control of a 3-Terminal
Fixed Regulator
VO
V+
VO
R1
R1
R2
Q1
R2
V
O
[
ǒ) Ǔ
1
R1
R2
V
V
I(ref)
limit
[
Figure 9. Higher-Current Applications
ǒ ) Ǔǒ
1
R1
R2
V
I(ref)
) VBE(Q1)
Ǔ
Figure 10. Crowbar
VCC
R1B
R1A
R2A
R2B
Low limit
[ VI(ref)
High limit
[ VI(ref)
ǒ ) Ǔ)
ǒ) Ǔ
1
R1B
R2B
1
R1A
R2A
VD
Figure 11. VCC Monitor
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
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Copyright  1999, Texas Instruments Incorporated