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Details, datasheet, quote on part number:UTCTL431A
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| Part: | UTCTL431A |
| Category: | Power Management => Power Supply Controllers |
| Description: | Description = 2.5+/-0.5% Programmable Precision Asdjustable Shunt Reference ;; Package = SOP-8, SOT-23, SOT-89, TO-92 ;; |
| Company: | Unisonic Technologies |
| Datasheet: | Download UTCTL431A datasheet File size : 64 kB |
| Request For quote: | Find where to buy UTCTL431A
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Datasheet text preview:
UTC TL431A
LINEAR INTEGRATED CIRCUIT
1
PROGRAMMABLE PRECISION REFERENCE
DESCRIPTION
The UTC TL431A is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref(approximately 2.5V) and 36V with two external resistors. It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others.
1
SOT-89
TO-92
2 1 3
FEATURES
*Programmable output Voltage to 36V. *Low dynamic output impedance 0.2. *Sink current capability of 1 to 100mA. *Equivalent full-range temperature coefficient of 50ppm/ °C typical for operation over full rated operating temperature range.
SOT-23
SO P-8
SOP-8 1: Cathode 2,3,6,7: Anode 8: Ref. 4,5: N.C. TO-92 1: Ref ; 2: Anode; 3: Cathode SOT-89 1: Ref ; 2: Anode; 3: Cathode SOT-23 1: Cathode; 2: Ref; 3: Anode
BLOCK DIAGRAM
CATHODE REFERENCE REFERENCE (R) ANODE(A) CATHODE (K)
2.5V Vref
ANODE
UTC UNISONIC TECHNOLOGIES
CO., LTD.
1
QW-R103-007,C
UTC TL431A
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
VKA IKA Iref Tj Topr Tstg
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified))
VALUE
37 -100 ~ +150 -0.05 ~ +10 150 -40 ~ +85 -65 ~ +150
UNIT
V mA mA °C °C °C
Cathode Voltage Cathode Current Range(Continuous) Reference Input Current Range Operating Junction Temperature Operating Ambient Temperature Storage Temperature Temperature
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Cathode Voltage Cathode Current
SYMBOL
VKA IKA
MIN
VREF 1
TYP
MAX
36 100
UNIT
V mA
ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified)
PARAMETER
Reference Input Voltage Deviation of reference Input Voltage Over temperature(note 1) Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage Reference Input Current Deviation of Reference Input Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance Note:TMIN=0°C,TMAX=+70°C
SYMBOL
Vref Vref/T
TEST CONDITIONS
VKA=VREF,IKA=10mA
MIN
TY P
MAX UNIT
V mV mV/V
2.483 2.495 2.507 4.5 -1.0 -0.5 1.5 0.4 0.45 0.05 0.15 17 -2.7 -2.0 4 1.2 1.0 1.0 0.5
VKA=VREF,IKA=10mA TMIN<=TA<=TMAX VKA=10V~VREF VKA=36V~10V Vref /VKA IKA=10mA Iref Iref/T IKA(min) IKA(OFF) ZKA IKA=10mA,R1=10k, R2= IKA=10mA,R1=10k, R2= TA=full Temperature VKA=VREF VKA=36V,VREF=0 VKA=VREF, IKA=1 to 100mA f1.0kHz
µA µA mA µA
UTC UNISONIC TECHNOLOGIES
CO., LTD.
2
QW-R103-007,C
UTC TL431A
LINEAR INTEGRATED CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
Fig 1 Cathode Current Vs Cathode Voltage
125
800
Fig 2 Cathode Current Vs Cathode Voltage
Cathode Current (mA)
100 75 50 25 0 -25 -50 -75 -100 -2
Cathode Current A) m(
Ta=25°C VKA=VREF
600
Ta=25°C VKA=VREF
400 IKA(min) 200
0
-200 -1 0 1 2 3 -2 -1 0 1 2 3
Cathode Voltage (V)
Cathode Voltage (V)
0
Fig 3 Change in Reference Input Voltage Vs Cathode voltage
Input and Output Voltage (V)
7 6 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 0
Fig 4 Pulse Response
Ta=25°C
Change In Reference INput Voltage (mV)
-5 -10 -15 -20 -25 -30 -35 -40
IKA=100mA Ta=25°C
1
2
3
4
5
6
7
Cathode Voltage (V)
Time (ms)
Fig 5 Dynamic Impedance Vs Frequency
10
2
Fig 6 Small Signal Voltage Amplification Vs Frequency
70 60
Voltage Amplification (dB)
Impedance ()?
Ta=25°C IKA=0mA to 100mA
10
1
50 40 30 20 10 0
Ta=25°C IKA=10mA
10
0
10
-1
10
3
10
4
10
5
10
6
10
7
-10 3 10
10
4
10
5
10
6
10
7
Frequency (Hz)
Frequency (Hz)
UTC UNISONIC TECHNOLOGIES
CO., LTD.
3
QW-R103-007,C
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