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TLVH432BQDBZR +BOM

0.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout)

Manufacturer:

TI
Mfr.Part #:

TLVH432BQDBZR
Datasheet:

TLVH432BQDBZR Datasheet (PDF)
VO (V):

1.24
Initial Accuracy (max) (%):

0.5
VO Adj (min) (V):

1.24
VO Adj (max) (V):

18
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TLVH432BQDBZR General Description

The TLVH431 and TLVH432 devices are low-voltage 3-terminal adjustable voltage references, 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 18 V with two external resistors (see Figure 7-2). 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 TLVH431 and TLVH432 devices are ideal voltage references in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 and TLVH432 devices excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

The TLVH432 device is identical to the TLVH431 device, but is offered with different pinouts for the 3-pin SOT-23 and SOT-89 packages.

Key Features

Low-voltage operation: down to 1.24 V
Reference voltage tolerances at 25°C
- 0.5% for B grade
- 1% for A grade
- 1.5% for standard grade
Adjustable output voltage, V_O = V_REF to 18 V
Wide operating cathode current range: 100 µA to 70 mA
0.25-Ω typical output impedance
–40°C to +125°C specifications
TLVH432 provides alternative pinouts for SOT-23-3 and SOT-89 packages
Ultra-small SC-70 package offers 40% smaller footprint than SOT-23-3

Specifications

VO (V)	1.24	Initial accuracy (max) (%)	0.5
VO adj (min) (V)	1.24	VO adj (max) (V)	18
Iz for regulation (min) (µA)	60	Reference voltage (V)	adjustable
Rating	Catalog	Temp coeff (max) (ppm/°C)	138
Operating temperature range (°C)	-40 to 125, -40 to 85, 0 to 70	Iout/Iz (max) (mA)	80