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參數(shù)資料
| 型號： | TCN4040D-2.5EOA |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE |
| 中文描述： | 精密微功耗并聯(lián)電壓基準 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 127K |
| 代理商： | TCN4040D-2.5EOA |
TCN4040
4
PRELIMINARY INFORMATION
TCN4040-01 6/16/97
PRECISION MICROPOWER
SHUNT VOLTAGE REFERENCE
APPLICATIONS INFORMATION
Available in a space saving SOT-23B-3 surface mount
package, the TCN4040 is a precision micro-power curva-
ture-corrected bandgap shunt voltage reference. The
TCN4040 is designed for stable operation without an exter-
nal capacitor connected between the “+” pin and the “–” pin.
The TCN4040 also remains stable, however, if a bypass
capacitor is used. The minimum operating current increase
is 60mA and the maximum operating current is 15mA.
The TCN4040, in the SOT-23B-3 package has a para-
sitic Schottky diode between pin 3 (–) and pin 1. (Die attach
interface contact). Therefore, pin 1 of the SOT-23B-3 pack-
age must be left floating or connected to pin 3.
In a conventional shunt regulator application, an exter-
nal series resistor (R
S
) is connected between the supply
voltage and the TCN4040 (Figure 1). R
S
determines the
current that flows through the load (I
L
) and the TCN4040
(I
Q
). Even when the supply voltage is at its minimum, and
the load current is at its maximum value, R
S
should be small
enough to supply at least the minimum acceptable I
Q
to the
TCN4040 since load current and supply voltage may vary.
Conversely, when the supply voltage is at its maximum and
I
L
is at its minimum, R
S
should be large enough that the
current flowing through the TCN4040 is less than 15mA.
Figure 1. Shunt Regulator
R
S
I
L
I
Q
+
I
L
I
Q
V
R
V
S
TCN4040
R
S
is determined by the supply voltage, (V
S
), the load
and operating current, (I
L
and I
Q
), and the TCN4040’s
reverse breakdown voltage, V
R
.
V
S
– V
R
R
S
=
I
L
+ I
Q
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TCN4040E-2.5ENB | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE |
| TCN4040E-2.5EZB | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE |
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