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PDF TLVH431 Data sheet ( Hoja de datos )
| Número de pieza | TLVH431 | |
| Descripción | Programmable shunt voltage reference | |
| Fabricantes | STMicroelectronics | |
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TLVH431
Programmable shunt voltage reference
Datasheet - production data
SOT23-3L
SOT23-5L
• Battery chargers
• Switch mode power supplies
• Battery operated equipment
• Data acquisition systems
• Energy management
Description
Features
SOT323-6L
The TLVH431 is a low power programmable
shunt voltage reference, with guaranteed
temperature stability over the entire operating
temperature range.
• Adjustable output voltage: 1.24 V to 18 V
The output voltage may be set to any value
• Low operating current: 100 µA at 25 °C
• 0.25%, 0.5%, 1% and 1.5% voltage precision
• Sink current capability up to 60 mA
• -40 to +125 °C temperature range
between 1.24 V and 18 V by means of an external
resistor divider.
The TLVH431 operates with a wide current range
from 100 µA to 60 mA with a typical dynamic
impedance of 0.22 Ω.
• 100 ppm/°C maximum temperature coefficient
Available in SOT23-3L, SOT23-5L and SOT323-
• Available in SOT23-3L, SOT23-5L and
6L surface mounted packages, it can be designed
SOT323-6L packages
in applications where space saving is a critical
issue.
Applications
The low operating current is a key advantage for
• Computers
power restricted designs.
Table 1. Device summary
Part number
Precision
Package
Temperature range
TLVH431AIL3T
TLVH431BIL3T
TLVH431MIL3T
TLVH431LIL3T
TLVH431AIL5T
TLVH431BIL5T
TLVH431LIL5T
TLVH431AICT
TLVH431BICT
TLVH431LICT
0.5%
0.25%
1%
1.5%
0.5%
0.25%
1.5%
0.5%
0.25%
1.5%
SOT23-3L
SOT23-5L
SOT323-6L
-40 to +125°C
November 2015
This is information on a product in full production.
DocID023303 Rev 5
1/15
www.st.com
1 page  
TLVH431
3 Electrical characteristics
Electrical characteristics
Ik = 10 mA, Tamb = 25 °C (unless otherwise specified).
Symbol
Table 5. Electrical characteristics for TLVH431
Parameter
Test conditions
Min. Typ. Max.
Unit
Vref Reference voltage
VKA = Vref
TLVH431A 0.5%
TLVH431B 0.25%
TLVH431M 1%
TLVH431L 1.5%
1.234
1.246
1.237 1.24 1.243
1.227
1.253
1.222
1.258
V
ΔVref
Reference voltage
variation over
temperature range (1)
- 40 °C < Tamb < +125 °C
TLVH431A 0.5%
TLVH431B 0.25%
TLVH431M 1%
TLVH431L 1.5%
-26.7
-23.5
-32.8
-39
+26.7
+23.5
+32.8
+39
mV
ΔVKA/ΔT
Average temperature
coefficient
VKA = Vref, - 40 °C < Tamb < +125 °C
±30 ±100 ppm/°C
Ikmin
Minimum cathode
current for regulation
ΔIkmin
Minimum cathode
current variation over
temperature range
VKA = Vref
VKA = VKAmax
VKA = Vref, - 40 °C < Tamb < +125 °C
VKA = VKAmax, - 40 °C < Tamb < +125°C
60 100
160 200
70 100
100 200
µA
µA
Iref Reference input current R1 = 10 kΩ, R2 = ∞
Reference current
ΔIref variation over
temperature range
R1 = 10 kΩ, R2 = ∞
- 40 °C < Tamb < + 125 °C
1.5 2.5
2.5 3.5
µA
µA
Δ-Δ---VV---r-k-e--a-f
Ratio of change in
reference input voltage
to change in cathode to
anode voltage
ΔVKA = 18 V to Vref
ΔVKA = 18 V to Vref, - 40 °C < Tamb < +125 °C
-2
mV/V
-2.5
Ioff Off-state cathode current VKA = VKAmax,Vref = GND
10 80
nA
ΔIoff
Off-state cathode current VKA = VKAmax,Vref = GND
over temperature range - 40 °C < Tamb < +125 °C
1000 2000 nA
⏐RKA⏐ Static impedance
⏐ZKA⏐ Dynamic impedance (2)
VKA = Vref, ΔIK = 100 µA to 60 mA
VKA = Vref, ΔIK = 10 mA to 60 mA, f ≤ 1 kHz
0.14 0.62
0.22 0.85
W
W
en Wide band noise
IK = 10 mA; 10 Hz < f < 100 kHz
30 mVRMS
TON Turn-on setting time
VKA = Vref, ΔIK = 10 mA
40 70 µsec
1.
The tolerance values, across the temperature range,
Example: TLVH431A ΔVk = ±1.24 x (0.5% + 100 ppm/°C x
are calculated as:
165 °C) = ±1.24 x
±Vk25°C x {tolerance25°C+[(ppmmax
(0.5%+1.65%)= ±1.24 x 2.15% = ±
/°C)
26.7
x (ΔT)]}.
mV.
2. The dynamic impedance is defined as ⏐ZKA⏐=ΔVKA/ΔIk.
Note:
Limits are 100% production tested at 25 °C. Limits over the temperature range are
guaranteed through correlation and by design.
DocID023303 Rev 5
5/15
15
5 Page 
TLVH431
Package information
Dim.
A
A1
A2
b
c
D
e
E
H
L
θ
Table 7. SOT23-5L mechanical data
mm
Min.
Typ.
0.90 1.20
0.90 1.05
0.35 0.40
0.09 0.15
2.80 2.90
0.95
1.50 1.60
2.60 2.80
0.10 0.35
0°
Max.
1.45
0.15
1.30
0.50
0.20
3.00
1.75
3.00
0.60
10°
Figure 16. SOT23-5L recommended footprint (dimensions are in mm)
7049676_I
DocID023303 Rev 5
11/15
15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TLVH431.PDF ] | |
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