NJU7211 Series
C-MOS 3-TERMINAL NEGATIVE VOLTAGE REGULATOR
■
GENERAL DESCRIPTION
The
NJU7211 series
is a C-MOS 3-terminal negative voltage
regulator which contains internal precision voltage reference, error
amplifier, control transistor and output voltage setting resistor.
The regulation voltage is fixed by internal circuits and the following
line-up of different output voltage versions are available.
The
NJU7211 series
is suitable for battery operated items and
battery back-up systems because of low operating current and low
dropout voltage.
■
FEATURES
•
Low Operating Current
(19µA typ.)
•
Wide Operating Voltage Range
•
Low Dropout Voltage
(∆V
IO
< 0.6V -3.0V output, I
OUT
= 20mA)
(∆V
IO
< 0.6V -5.0V output, I
OUT
= 40mA)
•
Small Temperature Coefficient of Output Voltage
•
Package Outline
(TO-92/SOT-89)
•
C-MOS Technology
■
OUTPUT VOLTAGE LINE-UP
Output Voltage
TO-92 Type
-2.0V
NJU7211L20
-3.0V
NJU7211L30
-4.0V
NJU7211L40
-5.0V
NJU7211L50
■
PACKAGE OUTLINE
NJU7211L(TO-92)
NJU7211U(SOT-89)
■
TERMINAL DESCRIPTION
No.
Description
1
Output
2
GND
3
Input
SOT-89 Type
NJU7211U20
NJU7211U30
NJU7211U40
NJU7211U50
■
EQUIVALENT CIRCUIT
GND
2
V
REF
-
+
V
IN
3
1
V
OUT
Ver.2003-07-23
-1-
NJU7211 Series
■
MEASUREMENT CIRCUIT
V
IN
NJU7211
DC
C
IN
GND
V
OUT
V
C
O
I
OUT
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver.2003-07-23
-3-
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