IP120A
IP120
IP7900A
IP7900
LM120
SERIES
SERIES
SERIES
SERIES
SERIES
1
1
2
2
1.5 AMP
NEGATIVE
VOLTAGE REGULATOR
3
3
FEATURES
Pin 1 – Ground
Pin 2 – V
OUT
Case – V
IN
Pin 1 – Ground
Pin 2 – V
OUT
Case – V
IN
• OUTPUT VOLTAGES OF -12, -15V
• 0.01% / V LINE REGULATION
• 0.3% / A LOAD REGULATION
• THERMAL OVERLOAD PROTECTION
• SHORT CIRCUIT PROTECTION
K Package – TO–3
R Package – TO–66
!
• OUTPUT TRANSISTOR SOA PROTECTION
1 2 3
• 1% VOLTAGE TOLERANCE
(–A VERSIONS)
Pin 1 – Ground
Pin 2 – V
IN
Pin 3 – V
OUT
Pin 1 – Ground
Pin 2 – V
IN
Pin 3 – V
OUT
Case – V
IN
*
DESCRIPTION
The IP120A / LM120 / IP7900A / IP7900 series of 3 terminal
regulators is available with several fixed output voltage
making them useful in a wide range of applications.
The A suffix devices provide 0.01% / V line regulation,
0.3% / A load regulation and ±1% output voltage tolerance at
room temperature.
Protection features include Safe Operating Area current
limiting and thermal shutdown.
G Package – TO–257
IG Package– TO–257
*
* isolated Case on IG package
SMD PACKAGE – SMD1
Ceramic Surface Mount
GND
NC
NC
V
OUT
1
2
3
4
8
7
6
5
NC
NC
V
IN
NC
J Package – 8 Pin Cerdip
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25°C unless otherwise stated)
V
I
P
D
T
j
T
stg
Semelab plc.
DC Input Voltage
Power Dissipation
Operating Junction Temperature Range
Storage Temperature
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
(for V
O
= -12, -15V)
35V
Internally limited
–55 to 150°C
–65 to 150°C
Prelim. 6/01
IP120A
IP120
IP7900A
IP7900
LM120
Parameter
V
O
Output Voltage
Test Conditions
I
O
= 500mA
I
O
= 5mA to I
MAX
V
O
Low Supply
I
O
= 5mA to I
MAX
V
IN
= -14.5V to -27V
V
IN
= -14.5V to -30V
I
O
= 0.5 I
MAX
∆V
O
Line Regulation
I
O
≤
I
MAX
V
IN
= -16V to -22V
V
IN
= -19V
∆V
O
Load Regulation
V
IN
= -19V
I
O
≤
0.5 I
MAX
V
IN
= -19V
I
O
= 5mA to I
MAX
∆I
Q
Quiescent Current
Change
V
IN
= -19V
I
O
≤
0.5 I
MAX
f = 10Hz to 100kHz
V
IN
= -19V
f = 120Hz
Ripple Rejection
Dropout Voltage
R
O
I
sc
I
pk
Output Resistance
Short Circuit
Current
Peak Output
Current
Average Temperature
Coefficient of V
O
Input Voltage required to
maintain line regulation
V
IN
= -15V to -25V
I
O
= I
MAX
f = 1 kHz
V
IN
= -35V
V
IN
= -19V
I
O
= 5mA
I
O
≤
I
MAX
-14.5
I
O
≤
I
MAX
I
O
≤
0.5 I
MAX
T
J
= -55 to 150°C
58
58
T
J
= -55 to 150°C
V
IN
= -14.5V to -30V
V
IN
= -15V to -30V
T
J
= -55 to 150°C
V
N
Output Noise
Voltage
∆V
IN
∆V
O
T
J
= -55 to 150°C
T
J
= -55 to 150°C
I
O
= 5mA to1.5A
I
O
= 250mA to 750mA
I
O
= 5mA to I
MAX
T
J
= -55 to 150°C
I
Q
Quiescent Current
V
IN
= -14.8V to -27V
T
J
= -55 to 150°C
V
IN
= -19V
T
J
= -55 to 150°C
P
D
≤
P
MAX
V
IN
= -14.8V to -27V P
D
≤
P
MAX
IP7912A
IP120A–12
Min.
Typ.
Max.
-11.88
-11.64
-11.40
4
4
1
2
12
4
8
0.2
1
0.2
0.2
0.1
0.1
75
72
72
1.1
8
0.6
2.4
0.5
1.2
3.3
4.8
-14.5
2.3
-12
-12.12
-12.36
-12.36
18
18
4
9
32
19
60
0.4
2
0.4
0.5
0.4
0.5
960
56
56
SERIES
SERIES
SERIES
SERIES
SERIES
Units
V
IP7912, IP120–12
LM120–12
Min.
Typ.
Max.
-11.76
11.52
-11.40
4
4
1
2
12
4
8
0.2
1
0.2
0.2
0.1
0.1
75
72
72
1.1
8
0.6
2.4
0.5
1.2
3.3
4.8
2.3
-12
-12.24
-12.48
-12.60
120
200
25
60
80
60
120
0.4
2
0.4
0.5
0.4
1.0
960
V
mV
mV
mA
mA
µV
dB
V
mΩ
A
mV
°C
V
1) All characteristics are measured with a capacitor across the input of 0.22µF and a capacitor across the output of 0.1µF.
All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (t
p
≤
10ms,
δ ≤
5%). Output
voltage changes due to changes in internal temperature must be taken into account separately.
2) Test Conditions unless otherwise stated: P
MAX
= 10W for TO–220SM , P
MAX
= 1W for Cerdip, P
MAX
= 20W for all other package
devices
I
MAX
= 1.0A , T
J
= 25°C
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 6/01
IP120A
IP120
IP7900A
IP7900
LM120
Parameter
V
O
Output Voltage
Test Conditions
I
O
= 500mA
I
O
= 5mA to I
MAX
V
O
Low Supply
I
O
= 5mA to I
MAX
V
IN
= -17.5V to -30V
V
IN
= -17.5V to -30V
I
O
= 0.5 I
MAX
∆V
O
Line Regulation
I
O
≤
I
MAX
V
IN
= -20V to -26V
V
IN
= -23V
∆V
O
Load Regulation
V
IN
= -23V
I
O
≤
0.5 I
MAX
V
IN
= -23V
I
O
= 5mA to I
MAX
∆I
Q
Quiescent Current
Change
V
IN
= -23V
I
O
≤
0.5 I
MAX
f = 10Hz to 100kHz
V
IN
= -23V
f = 120Hz
Ripple Rejection
Dropout Voltage
R
O
I
sc
I
pk
Short Circuit
Current
Peak Output
Current
Average Temperature
Coefficient of V
O
Input Voltage required to
maintain line regulation
V
IN
= -18.5V to
-28.5V
I
O
= I
MAX
Output Resistance f = 1 kHz
V
IN
= -35V
V
IN
= -23V
I
O
= 5mA
I
O
≤
I
MAX
-17.5
I
O
≤
I
MAX
I
O
≤
0.5 I
MAX
T
J
= -55 to 150°C
56
56
T
J
= -55 to 150°C
V
IN
= -17.5V to -30V
V
IN
= -18.5V to -30V
T
J
= -55 to 150°C
V
N
Output Noise
Voltage
∆V
IN
∆V
O
T
J
= -55 to 150°C
T
J
= -55 to 150°C
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
I
O
= 5mA to I
MAX
T
J
= -55 to 150°C
I
Q
Quiescent Current
V
IN
= -17.9V to -30V
T
J
= -55 to 150°C
V
IN
= -23V
T
J
= -55 to 150°C
P
D
≤
P
MAX
V
IN
= -17.9V to -30V P
D
≤
P
MAX
IP7915A
IP120A–15
Min.
Typ.
Max.
-14.85
-14.55
-14.25
4
4
2
5
12
4
9
1
1
0.2
0.2
0.1
0.1
90
70
70
1.1
9
0.6
2.4
0.6
1.2
3.3
6
-17.5
2.3
-15
-15.15
-15.45
-15.45
22
22
10
30
35
21
75
1.9
2
0.4
0.5
0.4
0.5
1200
54
54
SERIES
SERIES
SERIES
SERIES
SERIES
Units
V
IP7915, IP120–15
LM120–15
Min.
Typ.
Max.
-14.7
-14.4
-14.25
4
4
2
5
12
4
9
1
1
0.2
0.2
0.1
0.1
90
70
70
1.1
9
0.6
2.4
0.6
1.2
3.3
6
2.3
-15
-15.3
-15.6
-15.75
150
250
75
150
80
75
150
1.9
2
0.4
0.5
0.4
1.0
1200
V
mV
mV
mA
mA
µV
dB
V
mΩ
A
mV
°C
V
1) All characteristics are measured with a capacitor across the input of 0.22µF and a capacitor across the output of 0.1µF.
All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (t
p
≤
10ms,
δ ≤
5%). Output
voltage changes due to changes in internal temperature must be taken into account separately.
2) Test Conditions unless otherwise stated: P
MAX
= 10W for TO–220SM , P
MAX
= 1W for Cerdip, P
MAX
= 20W for all other package
devices
I
MAX
= 1.0A , T
J
= 25°C
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 6/01
IP120A
IP120
IP7900A
IP7900
LM120
APPLICATIONS INFORMATION
SERIES
SERIES
SERIES
SERIES
SERIES
I N PU T
V
IN
GND
C1 *
2. 2µF
T AN T .
V
OU T
OUTPUT
I N PU T
V
IN
GND
V
OU T
OUTPUT
R1
C2
1
µF
TANT.
I N PU T
V
IN
GND
C1
2. 2µF
T AN T .
V
OU T
C2
1µF
T AN T .
R1
C2 * *
1
µF
TANT.
C1
2. 2µF
T AN T .
O U TPU T
I
OUT
R2
Fixed Output Regulator
Required if the regulator is located far from
the power supply.
** Required for stability. 25mF electrolytic may
be substituted.
*
Adjustable Output Regulator
V
OUT
≈
V
REG
(R1+R2)
R1
Current Regulator
V
REG
R1
I
OUT
=
+ I
Q
Order Information
Part
Number
IP7900A
IP7900
IP120A
IP120
LM120
K–Pack
(TO–3)
4
4
4
4
4
R–Pack
(TO–66)
4
4
4
4
4
G/IG–Pack
(TO–257)
4
4
4
4
4
SG–Pack
J–Pack
Temp.
SMD1
8 Pin Cerdip
Range
4
4
-55 to +150°C
4
4
”
4
4
”
4
4
”
4
4
”
Note:
To order, add the
package identifier to the
part number.
eg.
IP7912AK
IP120SMD-15
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 6/01
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