NJM7900
3-TERMINAL NEGATIVE VOLTAGE REGULATOR
■
GENERAL DESCRIPTION
The NJM7900 series of Monolithic 3-Terminal Negative Voltage
Regulators are constructed using the New JRC Planar epitaxial
process. These negative regulators are intended as complements
to the popular NJM7800 series of positive voltage regulators, and
they are available in the same voltage options from –5 to –24V.
The NJM7900 series employ internal current limiting, safe area
protection, and thermal shutdown, making the virtually indestructible.
■
PACKAGE OUTLINE
1. COMMON
2. IN
3. OUT
■
FEATURES
•
Internal Short Circuit Current Limit
•
Internal Thermal Overload Protection
•
Excellent Ripple Rejection
•
Guarantee'd 1.5A Output Current
•
Output Capacitor
recommended electrolytic capacitor
•
Package Outline
TO-220F
•
Bipolar Technology
NJM7900FA
(note) The radiation fin is connected to Pin 2.
■
EQUIVALENT CIRCUIT
Ver.2012-05-30
-1-
NJM7900
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Power Dissipation
Operating Junction Temperature
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
IN
P
D
T
j
T
opr
T
stg
MAXIMUM RATINGS
7905 to 7909
7912 to 7915
7918 to 7924
16(T
C
≤70ºC)
-40 to +150
-40 to +85
-40 to +150
-35
-35
-40
(T
a
=25
ºC
)
UNIT
V
W
ºC
ºC
ºC
■
THERMAL CHARACTERISTICS
Junction-to-Ambient Temperature
Thermal Resistance
Junction-to-case
θjc
5
θja
60
ºC/W
■
ELECTRICAL CHARACTERISTICS
(T
j
=25ºC,
C
IN
=2.2µF,
C
O
=1.0µF)
Measurement is to be conduced in pulse testing
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
NJM7905FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
10V, I
O
=
0.5A
V
IN
=-
7 to -25V, I
O
=
0.5A
V
IN
=-
10V, I
O
=
0.005 to 1.5A
V
IN
=-
10V, I
O
=
0mA
V
IN
=-
10V, I
O
=
5mA
V
IN
=-
10V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
10V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-4.8
-
-
-
-
54
-
-5.0
5
50
2.2
-0.4
60
100
-5.2
50
80
5.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
NJM7906FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
11V, I
O
=
0.5A
V
IN
=-
8 to -25V, I
O
=
0.5A
V
IN
=-
11V, I
O
=
0.005 to 1.5A
V
IN
=-
11V, I
O
=
0mA
V
IN
=-
11V, I
O
=
5mA
V
IN
=-
11V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
11V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-5.75
-
-
-
-
54
-
-6.0
5
50
2.2
-0.5
60
110
-6.25
60
90
5.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
-2-
Ver.2012-05-30
NJM7900
■
ELECTRICAL CHARACTERISTICS
(T
j
=25ºC,
C
IN
=2.2µF,
C
O
=1.0µF)
Measurement is to be conducted in pulse testing.
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
NJM7908FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
14V, I
O
=
0.5A
V
IN
=-
10.5 to -25V, I
O
=
1.5A
V
IN
=-
14V, I
O
=
0.005 to 0.5A
V
IN
=-
14V, I
O
=
0mA
V
IN
=-
14V, I
O
=
5mA
V
IN
=-
14V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
14V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-7.7
-
-
-
-
54
-
-8.0
8
60
2.2
-0.7
60
130
-8.3
80
110
5.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
NJM7909FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
15V, I
O
=
0.5A
V
IN
=-
11.5 to -25V, I
O
=
0.5A
V
IN
=-
15V, I
O
=
0.005 to 1.5A
V
IN
=-
15V, I
O
=
0mA
V
IN
=-
15V, I
O
=
5mA
V
IN
=-
15V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
15V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-8.65
-
-
-
-
54
-
-9.0
8
60
2.2
-0.8
59
150
-9.35
90
120
5.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
NJM7912FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
19V, I
O
=
0.5A
V
IN
=-
14.5 to –30V, I
O
=
0.5A
V
IN
=-
19V, I
O
=
0.005 to 1.5A
V
IN
=-
19V, I
O
=
0mA
V
IN
=-
19V, I
O
=
5mA
V
IN
=-
19V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
19V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-11.5
-
-
-
-
54
-
-12.0
3
60
2.7
-0.4
68
150
-12.5
120
150
6.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
NJM7915FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
23V, I
O
=
0.5A
V
IN
=-
17.5 to –30V, I
O
=
0.5A
V
IN
=-
23V, I
O
=
0.005 to 1.5A
V
IN
=-
23V, I
O
=
0mA
V
IN
=-
23V, I
O
=
5mA
V
IN
=-
23V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
23V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-14.4
-
-
-
-
54
-
-15.0
3
60
2.7
-0.5
67
170
-15.6
150
180
6.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
Ver.2012-05-30
-3-
NJM7900
■
ELECTRICAL CHARACTERISTICS
(T
j
=25ºC,
C
IN
=2.2µF,
C
O
=1.0µF)
Measurement is to be conducted in pulse testing.
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
NJM7918FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
27V, I
O
=
0.5A
V
IN
=-
21 to –33V, I
O
=
0.5A
V
IN
=-
27V, I
O
=
0.005 to 1.5A
V
IN
=-
27V, I
O
=
0mA
V
IN
=-
27V, I
O
=
5mA
V
IN
=-
27V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
27V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-17.3
-
-
-
-
54
-
-18.0
4
60
2.7
-0.6
66
200
-18.7
180
210
6.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
NJM7924FA
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Average Temperature
Coefficient of Output Voltage
Ripple Rejection
Output Noise Voltage
V
O
∆V
O
- V
IN
∆V
O
- I
O
I
Q
∆V
O
/∆T
RR
V
NO
V
IN
=-
33V, I
O
=
0.5A
V
IN
=-
27 to –38V, I
O
=
0.5A
V
IN
=-
33V, I
O
=
0.005 to 1.5A
V
IN
=-
33V, I
O
=
0mA
V
IN
=-
33V, I
O
=
5mA
V
IN
=-
33V, I
O
=
0.5A, e
in
=
2V
P-P
, f
=
120Hz
V
IN
=-
33V, I
O
=
0.5A , BW
=
10Hz to 100kHz,
-23.0
-
-
-
-
54
-
-24.0
5
60
2.7
-0.8
64
300
-25.0
240
270
6.0
-
-
-
V
mV
mV
mA
mV/ºC
dB
µV
-4-
Ver.2012-05-30
NJM7900
■
TEST CIRCUIT
1. Output Voltage, Line Regulation, Load Regulation,
Quiescent Current, Average Temperature Coefficient of
Output Voltage, Output Noise Voltage
2. Ripple Rejection
I
Q
= I
IN
- I
O
■
POWER DISSIPATION VS. AMBIENT TEMPERATURE
RR=20log
10
⎛
e
in
⎞
[dB]
⎜ ⎟
⎝
e
o
⎠
Ver.2012-05-30
-5-
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