參數(shù)資料
型號(hào): ZTLV431
廠商: Zetex Semiconductor
英文描述: 1.24V Cost effective shunt regulator
中文描述: 兩種器件的成本效益并聯(lián)穩(wěn)壓器
文件頁(yè)數(shù): 3/8頁(yè)
文件大?。?/td> 205K
代理商: ZTLV431
ZTLV431
Issue 2 - June 2006
Zetex Semiconductors plc 2006
3
www.zetex.com
Electrical characteristics (electrical characteristics over recommended operating
conditions, T
A
= 25°C, K
KA
= V
REF
, I
KA
= 10mA unless otherwise stated)
Symbol
Parameter
Conditions
Deviation of reference input voltage, V
DEV
, is defined as the maximum variation of the reference
input voltage over the full temperature range.
The average temperature coefficient of the reference input voltage, V
REF
is defined as:
°
C
V
REF
T
1
The dynamic output impedance, Z
K
A, is defined as:
Z
KA
I
K
When the device is programmed with two externalresistors, R1
and R2, (fig 2) , the dynamic output impedance of the overall
circuit, Z’, is defined as:
1
R
2
Min.
1.228
1.234
1.215
1.224
1.209
1.221
Typ.
1.24
1.24
Max. Units
1.252
1.246
1.265
1.259
1.271
1.265
12
20
31
-2.7
-2.7
V
REF
Reference voltage
ZTLV431A
ZTLV431B
V
T
A
= -40 to 85°CZTLV431A
ZTLV431B
T
A
= -40 to 125°C
ZTLV431A
ZTLV431B
V
REF(dev)
Deviation of reference
voltage over full
temperature range
T
A
= 0 to 70°C
T
A
= -40 to 85°C
T
A
= -40 to 125°C
4
6
11
-1.5
-1.5
mV
Ratio of change in
reference voltage
to
the change in cathode
voltage
Reference input current
V
KA
from V
REF
to
I
KA
= 10mA
6V
10V
mV/V
I
REF
I
KA
= 10mA, R
1
= 10k ., R
2
= OC
0.1
0.05
0.1
0.15
55
0.5
0.3
0.4
0.5
100
μA
I
REF(dev)
I
REF
deviation over full
temperature range
I
KA
= 10mA,
R
1
= 10k ,
R
2
= OC
T
A
= 0 to 70°C
T
A
= -40 to 85°C
T
A
= -40 to 125°C
T
A
= -40 to 125°C
μA
I
KMIN
Minimum cathode
current for regulation
Off-state current
Dynamic output
impedance
V
KA
= V
REF
μA
I
K(OFF)
z
KA
V
KA
= 10V, V
REF
=0V
V
KA
= V
REF
, f = <1kHz,
I
K
= 0.1 to 15mA
10
0.25
30
0.4
μA
V
V
KA
----------------
V
max
V
min
T1
T2
V
dev
= V
max
- V
min
Temperature
V
REF
-------------
DEV
x
1000000
(
T
2
)
V
=
K
----------
=
Z
Z
KA
x
1
R
+
(
)
=
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