Low-Voltage Adjustable Precision Shunt Regulator

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Datasheet

Low-Voltage Adjustable Precision Shunt Regulator (Rev. T) (tlv431b.pdf, 875 KB)
27 Jun 2007 Download

	TLV431	TLV431A	TLV431B
VO Adj(Min)(V)	1.24	1.24	1.24
VO Adj(Max)(V)	6	6	6
Initial Accuracy @ 25/deg C(%)	1.5	1	0.5
Temp Coeff(Max)(ppm/ degree C)	129	129
Temp Coeff(Typ)(ppm/ degree C)	39	39
Min Iz for Regulation(uA)	80	80	80
Iout/Iz(Max)(mA)	15	15	15
Pin/Package	3SOT-23,3SOT-89,3TO-92,5SOT-23	3SOT-23,3SOT-89,3TO-92,5SOT-23,8SOIC	3SOT-23,3TO-92,3SOT-89,5SOT-23,6SC70
Approx. Price (US$)	0.23 \| 1ku	0.25 \| 1ku	0.32 \| 1ku
Operating Temp Range(Celsius)	-40 to 125,-40 to 85,0 to 70	-40 to 125,-40 to 85,0 to 70	-40 to 125,-40 to 85,0 to 70
Rating	Catalog	Catalog	Catalog
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

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Product Information

Features

Low-Voltage Operation...V_REF = 1.24 V
Adjustable Output Voltage, V_O = V_REF 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 Typ
0.25- Typical Output Impedance
Ultra-Small SC-70 Package Offers 40% Smaller Footprint Than SOT-23-3
See TLVH431 and TLVH432 for
- Wider V_KA (1.24 V to 18 V) and I_K (80 mA)
- Additional SOT-89 Package
- Multiple Pinouts for SOT-23-3 and SOT-89 Packages

Description

The TLV431 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 V_REF (1.24 V) and 6 V with two external resistors. 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 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 . Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

Pricing / Packaging / CAD Design Tools / Samples

			Price ($US)	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price ($US) \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
TLV431BCDBVR	ACTIVE	0 to 70	0.38 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R
TLV431BCDBVRE4	ACTIVE	0 to 70	0.38 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R
TLV431BCDBVRG4	ACTIVE	0 to 70	0.38 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R
TLV431BCDBVT	ACTIVE	0 to 70	0.65 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDBVTE4	ACTIVE	0 to 70	0.65 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDBVTG4	ACTIVE	0 to 70	0.65 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDBZR	ACTIVE	0 to 70	0.38 \| 1ku	SOT-23 (DBZ) \| 3	View	3000 \| LARGE T&R
TLV431BCDBZRG4	ACTIVE	0 to 70	0.38 \| 1ku	SOT-23 (DBZ) \| 3	View	3000 \| LARGE T&R
TLV431BCDBZT	ACTIVE	0 to 70	0.65 \| 1ku	SOT-23 (DBZ) \| 3	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDBZTG4	ACTIVE	0 to 70	0.65 \| 1ku	SOT-23 (DBZ) \| 3	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDCKR	ACTIVE	0 to 70	0.40 \| 1ku	SC70 (DCK) \| 6	View	3000 \| LARGE T&R
TLV431BCDCKRE4	ACTIVE	0 to 70	0.40 \| 1ku	SC70 (DCK) \| 6	View	3000 \| LARGE T&R
TLV431BCDCKRG4	ACTIVE	0 to 70	0.40 \| 1ku	SC70 (DCK) \| 6	View	3000 \| LARGE T&R
TLV431BCDCKT	ACTIVE	0 to 70	0.67 \| 1ku	SC70 (DCK) \| 6	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDCKTE4	ACTIVE	0 to 70	0.67 \| 1ku	SC70 (DCK) \| 6	View	250 \| SMALL T&R	Purchase Samples
TLV431BCDCKTG4	ACTIVE	0 to 70	0.67 \| 1ku	SC70 (DCK) \| 6	View	250 \| SMALL T&R	Purchase Samples
TLV431BCLP	ACTIVE	0 to 70	0.32 \| 1ku	TO-92 (LP) \| 3	View	1000 \| BULK	Purchase Samples
TLV431BCLPE3	ACTIVE	0 to 70	0.32 \| 1ku	TO-92 (LP) \| 3	View	1000 \| BULK	Purchase Samples
TLV431BCLPR	ACTIVE	0 to 70	0.32 \| 1ku	TO-92 (LP) \| 3	View	2000 \| LARGE T&R
TLV431BCLPRE3	ACTIVE	0 to 70	0.32 \| 1ku	TO-92 (LP) \| 3	View	2000 \| LARGE T&R
TLV431BCPK	ACTIVE	0 to 70	0.35 \| 1ku	SOT-89 (PK) \| 3		1000 \| LARGE T&R
TLV431BCPKG3	ACTIVE	0 to 70	0.35 \| 1ku	SOT-89 (PK) \| 3		1000 \| LARGE T&R
TLV431BIDBVR	ACTIVE	-40 to 85	0.41 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R
TLV431BIDBVRE4	ACTIVE	-40 to 85	0.41 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R
TLV431BIDBVRG4	ACTIVE	-40 to 85	0.41 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R
TLV431BIDBVT	ACTIVE	-40 to 85	0.68 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Purchase Samples
TLV431BIDBVTE4	ACTIVE	-40 to 85	0.68 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Purchase Samples
TLV431BIDBVTG4	ACTIVE	-40 to 85	0.68 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Purchase Samples
TLV431BIDBZR	ACTIVE	-40 to 85	0.41 \| 1ku	SOT-23 (DBZ) \| 3	View	3000 \| LARGE T&R
TLV431BIDBZRG4	ACTIVE	-40 to 85	0.41 \| 1ku	SOT-23 (DBZ) \| 3	View	3000 \| LARGE T&R

TLV431B Status:ACTIVE