Loading...Philips TL431IP, TL431ILPU, TL431ID, TL431ILP, TL431AIPN Datasheet
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INTEGRATED CIRCUITS
TL431C, TL431AC, TL431I, TL431AI, LM431AC
Adjustable precision shunt regulators
Product specification |
1997 Feb 25 |
m n r
Philips Semiconductors |
Product specification |
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Adjustable precision shunt regulators
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
DESCRIPTION
The TL431 and TL431A are 3-terminal adjustable shunt regulators with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors (see Figure 4). These devices have a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies.
The TL431C and TL431AC are characterized for operation from
0°C to +70°C; the TL431I and TL431AI are characterized for operation from ±40°C to +85°C.
FEATURES
•Equivalent full-range temperature coefficient: 30ppm/°C
•0.2Ω typical output impedance
•Sink current capability: 1mA to 100mA
•Low output noise
•Adjustable output voltage: VREF to 36V
PIN CONFIGURATIONS
M, D Package
TOP VIEW
CATHODE |
1 |
8 |
REF |
ANODE |
2 |
7 |
ANODE |
ANODE |
3 |
6 |
ANODE |
NC |
4 |
5 |
NC |
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SOT96-1 |
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N, P Package
TOP VIEW
CATHODE |
1 |
8 |
REF |
NC |
2 |
7 |
NC |
NC |
3 |
6 |
ANODE |
NC |
4 |
5 |
NC |
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SOT97-1 |
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Z, LP, U Package
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CATHODE |
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ANODE |
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SOT54 |
REF |
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SL01167 |
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Figure 1. |
Pin Configuration |
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ORDERING INFORMATION |
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DESCRIPTION |
TEMPERATURE |
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INDUSTRY STANDARD |
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ORDER CODE |
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DWG # |
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RANGE |
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PART NUMBER |
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3-Pin Plastic TO92 2 |
0°C to +70°C |
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TL431CLP |
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TL431CLPU |
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SOT54 |
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3-Pin Plastic TO92 2 |
0°C to +70°C |
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TL431ACLP |
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TL431ACLPU |
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SOT54 |
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3-Pin Plastic TO92 2 |
±40°C to +85°C |
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TL431ILP |
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TL431ILPU |
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SOT54 |
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3-Pin Plastic TO92 2 |
±40°C to +85°C |
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TL431AILP |
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TL431AILPU |
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SOT54 |
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3-Pin Plastic TO92 2 |
0°C to +70°C |
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LM431ACZ |
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LM431ACZU |
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SOT54 |
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8-Pin Plastic Small Outline (SO) package |
0°C to +70°C |
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TL431CD |
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TL431CD |
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SOT96-1 |
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8-Pin Plastic Small Outline (SO) package |
±40°C to +85°C |
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TL431ID |
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TL431ID |
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SOT96-1 |
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8-Pin Plastic Small Outline (SO) package |
0°C to +70°C |
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TL431ACD |
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TL431ACD |
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SOT96-1 |
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8-Pin Plastic Small Outline (SO) package |
±40°C to +85°C |
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TL431AID |
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TL431AID |
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SOT96-1 |
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8-Pin Plastic Small Outline (SO) package |
0°C to +70°C |
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LM431ACM |
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LM431ACMD |
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SOT96-1 |
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8-Pin Plastic Dual In-Line package (DIP) |
0°C to +70°C |
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TL431CP |
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TL431CPN |
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SOT97-1 |
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8-Pin Plastic Dual In-Line package (DIP) |
±40°C to +85°C |
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TL431IP |
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TL431IPN |
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SOT97-1 |
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8-Pin Plastic Dual In-Line package (DIP) |
0°C to +70°C |
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TL431ACP |
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TL431ACPN |
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SOT97-1 |
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8-Pin Plastic Dual In-Line package (DIP) |
±40°C to +85°C |
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TL431AIP |
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TL431AIPN |
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SOT97-1 |
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NOTE:
1.SYMBOL INFORMATION: Parts will be marked with product name including temperature and electrical grade desginators, but not the package identifier.
2.TO92 is normally shipped in bulk, i.e., in plastic bags (containing 1,000 parts), 5 bags per box. Tape and reel (or ammo box) is an option. See page 15 for information.
1997 Feb 25 |
2 |
853±1927 17795 |
Philips Semiconductors |
Product specification |
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Adjustable precision shunt regulators
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
ABSOLUTE MAXIMUM RATINGS
SYMBOL |
PARAMETER |
RATING |
UNITS |
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VKA |
Cathode voltage (see Note 1) |
37 |
V |
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Continuous cathode current range |
±100 to +150 |
mA |
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Reference input current range |
0.05 to 10 |
mA |
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Operating free-air temperature range |
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Tamb |
C suffix |
0 to +70 |
°C |
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I suffix |
±40 to +85 |
°C |
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TSTG |
Temperature storage range |
±65 to 150 |
°C |
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Lead temperature 1.6mm (1/16 in.) from case for 10 sec: D or P pkgs |
260 |
°C |
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Lead temperature 1.6mm (1/16 in.) from case for 60 sec: LP pkg |
300 |
°C |
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NOTE:
1. Voltage values are with respect to the anode terminal unless otherwise noted.
RECOMMENDED OPERATING CONDITIONS
SYMBOL |
PARAMETER |
MIN |
MAX |
UNITS |
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VKA |
Cathode voltage |
VREF |
36 |
V |
IK |
Cathode current |
1 |
100 |
mA |
Table 1. Dissipation Rating Table ± Free-Air Temperature
Package |
Derating Factor Above Tamb |
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Tamb = 25°C |
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Tamb = 70°C |
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Tamb = 85°C |
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= 25°C |
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Power Rating |
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Power Rating |
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Power Rating |
D |
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5.8mW/°C |
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725mW |
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464mW |
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429mW |
LP |
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6.2mW/°C |
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775mW |
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496mW |
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403mW |
P |
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8.0mW/°C |
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1000mW |
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640mW |
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520mW |
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CATHODE |
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R4 |
R3 |
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800 |
800 |
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C1 |
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20p |
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REF |
Q5 |
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Q4 |
Q3 |
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Q2 |
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QD6 |
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R2 |
Q1 |
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Q7 |
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150 |
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R5 |
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3.28K |
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R7 |
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R1 |
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Qq1 |
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320 |
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10K |
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R11 |
R10 |
C2 |
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2.4K |
7.2K |
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20p |
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Q9 |
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Q11 |
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Q10 |
Q8 |
QD2 |
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R8 |
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R9 |
1000 |
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800 |
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ANODE |
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SL01188 |
Figure 2. Equivalent Schematic
1997 Feb 25 |
3 |
Philips Semiconductors |
Product specification |
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Adjustable precision shunt regulators
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
DC ELECTRICAL CHARACTERISTICS
25°C free-air temperature, unless otherwise stated.
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TEST |
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LIMITS |
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SYMBOL |
PARAMETER |
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TEST CONDITIONS |
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TL431AC |
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TL431C/LM431AC |
UNIT |
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CKT |
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MIN |
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TYP |
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MAX |
MIN |
TYP |
MAX |
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VREF |
Reference input voltage |
Fig. 3 |
VKA = VREF, IK = 10mA |
2470 |
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2495 |
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2520 |
2440 |
2495 |
2550 |
mV |
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Deviation of reference input |
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VKA = VREF, IK = 10mA, |
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VREF(dev) |
voltage over full |
Fig. 3 |
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4 |
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15 |
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4 |
17 |
mV |
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T |
= full range2 |
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temperature range3 |
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amb |
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VREF |
Ratio of change in reference |
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VKA = 10V ± VREF |
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±1.4 |
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±2.7 |
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±1.4 |
±2.7 |
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input voltage to the change |
Fig. 4 |
IK = 10mA |
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mV/V |
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VKA |
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V = 36V ± 10V |
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±1 |
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±2 |
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±1 |
±2 |
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in cathode voltage |
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KA |
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IREF |
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Reference input current |
Fig. 4 |
IK = 10mA, R1 = 10kΩ, R2 = ∞ |
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2 |
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4 |
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2 |
4 |
μA |
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Deviation of reference input |
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IK = 10mA, R1 = 10kΩ, R2 = ∞ , |
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μA |
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IREF(dev) |
current over full temperature |
Fig. 4 |
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0.8 |
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1.2 |
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0.4 |
1.2 |
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T |
= full range2 |
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range3 |
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amb |
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IMIN |
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Minimum cathode current |
Fig. 3 |
VKA = VREF |
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0.4 |
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0.6 |
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0.4 |
1 |
mA |
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for regulation |
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IOFF |
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Off-state cathode current |
Fig. 5 |
VKA = 36V, VREF = 0 |
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0.1 |
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0.5 |
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0.1 |
1 |
μA |
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| Z |
KA |
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Dynamic impedance4 |
Fig. 3 |
VKA = VREF, IK = 1mA to 100mA, |
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0.2 |
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0.5 |
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0.2 |
0.5 |
Ω |
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f ≤ 1kHz |
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25°C free-air temperature, unless otherwise stated.
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TEST |
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LIMITS |
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SYMBOL |
PARAMETER |
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TEST CONDITIONS |
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TL431AI |
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TL431I |
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UNIT |
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CKT |
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MIN |
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TYP |
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MAX |
MIN |
TYP |
MAX |
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VREF |
Reference input voltage |
Fig. 3 |
VKA = VREF, IK = 10mA |
2470 |
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2495 |
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2520 |
2440 |
2495 |
2550 |
mV |
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Deviation of reference input |
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VKA = VREF, IK = 10mA, |
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VREF(dev) |
voltage over full |
Fig. 3 |
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5 |
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25 |
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5 |
30 |
mV |
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T |
= full range2 |
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temperature range3 |
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amb |
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VREF |
Ratio of change in reference |
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VKA = 10V ± VREF |
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±1.4 |
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±2.7 |
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±1.4 |
±2.7 |
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input voltage to the change |
Fig. 4 |
IK = 10mA |
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mV/V |
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VKA |
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V = 36V ± 10V |
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±1 |
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±2 |
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±1 |
±2 |
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in cathode voltage |
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KA |
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IREF |
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Reference input current |
Fig. 4 |
IK = 10mA, R1 = 10kΩ, R2 = ∞ |
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2 |
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4 |
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2 |
4 |
μA |
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Deviation of reference input |
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IK = 10mA, R1 = 10kΩ, R2 = ∞ , |
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μA |
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IREF(dev) |
current over full temperature |
Fig. 4 |
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0.8 |
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2.5 |
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0.8 |
2.5 |
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T |
= full range2 |
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range3 |
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amb |
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IMIN |
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Minimum cathode current |
Fig. 3 |
VKA = VREF |
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0.4 |
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0.7 |
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0.4 |
1 |
μA |
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for regulation |
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IOFF |
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Off-state cathode current |
Fig. 5 |
VKA = 36V, VREF = 0 |
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0.1 |
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0.5 |
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0.1 |
1 |
μA |
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KA |
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Dynamic impedance4 |
Fig. 3 |
VKA = VREF, IK = 1mA to 100mA, |
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0.2 |
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0.5 |
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0.2 |
0.5 |
Ω |
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f ≤ 1kHz |
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NOTES:
2.Full temperature range is ±40°C to +85°C for the TL431I and TL431AI, and 0°C to +70°C for the TL431C and TL431AC.
3.The deviation parameters VREF(dev) and IREF(dev) are defined as the differences between the maximum and minimum values obtained over the rated termperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as:
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VREF(dev) |
Max VREF |
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106 |
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ppm |
VREF at 25oC |
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| VREF | |
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VREF(dev) |
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deg C |
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Tamb |
Min VREF |
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Tamb |
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where Tamb is the rated operating free-air temperature range of the device.
1997 Feb 25 |
4 |
Philips Semiconductors |
Product specification |
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Adjustable precision shunt regulators
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
αVREF can be positive or negative depending on whether minimum VREF of maximum VREF, respectively, occurs at the lower temperature. Example: Max VREF = 2496mV at 30°C, Min VREF = 2492mV at 0°C, VREF = 2495mV at 25°C, DTA = 70°C for TL431C.
| VREF | + |
2495mV4mV @ 106 |
+ 23ppm oC |
70oC |
Because minimum VREF occurs at the lower temperature, the coefficient is positive.
4. The dynamic impedance is defined as: | ZKA |
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VKA |
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I |
K |
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When the device is operating with two external resistors, (see Figure xx), the total dynamic impedance of the circuit is given by: | Z | + VI [ | ZKA | 1 ) R1R2
PARAMETER MEASUREMENT INFORMATION
INPUT |
VKA |
INPUT |
VKA |
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IK |
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Ioff |
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Vref |
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SL01177 |
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SL01179 |
Figure 3. |
Test Circuit for VKA = Vref |
Figure 5. |
Test Circuit for IOFF |
INPUT 
VKA
IK
R1
Iref
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R2 |
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R1 |
R1 |
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VKA + Vref 1 ) R2 ) Iref |
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SL01178
Figure 4. Test Circuit for VKA > Vref
1997 Feb 25 |
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