TLV431ACDBVR TLV431ACDBZR TLV431AIDBVR Power Path Management IC Voltage References Lw V Adj Shunt
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TLV431ACDBVR TLV431ACDBZR TLV431AIDBVR Power Path Management IC Voltage References Lw V Adj Shunt
1 Features
- Low-Voltage Operation, VREF = 1.24 V
-
Adjustable Output Voltage, VO = VREF to 6 V
-
Reference Voltage Tolerances at 25°C
-
– 0.5% for TLV431B
-
– 1% for TLV431A
-
– 1.5% for TLV431
-
-
Typical Temperature Drift
-
– 4 mV (0°C to 70°C)
-
– 6 mV (–40°C to 85°C)
-
– 11 mV (–40°C to 125°C)
-
-
Low Operational Cathode Current, 80 μA Typical
-
0.25-Ω Typical Output Impedance
-
Ultra-Small SC-70 Package Offers 40% Smaller Footprint Than SOT-23-3
-
See TLVH431 and TLVH432 for:
-
– Wider VKA (1.24 V to 18 V) and IK (80 mA)
-
– Additional SOT-89 Package
-
– Multiple Pinouts for SOT-23-3 and SOT-89 Packages
-
-
On Products Compliant to MIL-PRF-38535,
All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.
2 Applications
-
Adjustable Voltage and Current Referencing
-
Secondary Side Regulation in Flyback SMPSs
-
Zener Replacement
-
Voltage Monitoring
-
Comparator With Integrated Reference
3 Description
The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and 6 V with two external resistors (see the Parameter Measurement Information section). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
Device Information
|
PART NUMBER |
PACKAGE (PIN) |
BODY SIZE (NOM) |
|
TLV431x |
SOT-23 (3) |
2.90 mm × 1.30 mm |
|
SOT-23 (5) |
2.90 mm × 1.60 mm |
|
|
SC70 (6) |
2.00 mm × 1.25 mm |
|
|
TO-92 (3) |
4.30 mm × 4.30 mm |
|
|
SOIC (8) |
4.90 mm × 3.90 mm |
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