Bay Linear LM79124Z, LM79118Z, LM79112Z, LM79105Z, LM79115Z Datasheet
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com
100mA Negative Voltage Regulator
LM79LXX
Packaging Information
Ordering Information
Device Operating
Voltage
Temp. Package
LM79l05 7 to 20
0 to 125 °C
TO-92
LM79L12 14.5 to 27
0 to 125 °C
TO-92
LM79L15 17.5 to 30
0 to 125 °C
TO-92
LM79L18 20.5 to 33
0 to 125 °C
TO-92
LM79L24 27 to 38
0 to 125 °C
TO-92
Description
The Bay Linear LM79LXX is integrated linear negative
regulator with three terminals. The LM79LXX offer several
fixed output voltages making them useful in wide range of
applications. These appl ications include on-card regu lation for
elimination of noise and distribution problems associated with
single-point regulation. In addition they can be used with
power pass elements to make high-current voltage regulators.
Each of these regulators can deliver up to 100mA of output
current.
When used in replacement for a Zener diode-resistor
combination, an effective improvement in output impedance
can be obtained together with lower-bias current.
The LM79LXX is available in the plastic TO-92 (Z) package.
Features
• Output Current of 100mA
• Output Voltage Tolerance of 5%
• Internal thermal overload protection
• Internal Short-Circuit Limited
• No External Component
• Output Voltage- 5.0V, -12V, -15V, -18V, -
24V
• Offer in plastic TO-92
• Direct Replacement for MC79L00
Applications
• Post regulator for switching DC/DC
converter
• Bias supply for analog circuits
Bay Linear
Bay LinearBay Linear
Bay Linear
Linear Excellenc e
Bottom View
TO - 92 (N)
1
3 2
1.
Common
2.
Input
3.
Output
Bottom View
TO - 92 (N)
1
3 2
1.
2.
Input
3.
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com
LM79LXX
Absolute Maximum Rating
Parameter LM79L05 LM78L12…LM78L18 LM78L24 Unit
Input Voltage -30 -35 -40 V
Operating Free-Air, Case, Virtual
Junction Temp.
0 to 150 0 to 150 0 to 150
Storage Temperature Range -65 to 150 -65 to 150 -65 to 150
Lead temperature 1.6 mm from case
for sec.
260 260 260
°
C
Electrical Characteristics (LM79L05)
(VI=10V, IO=40mA, 0°C ≤T
J
≤
125 °C, C
I
= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)
Parameter Symbol Conditions MIN TYP MAX UNIT
Output Voltage V
O
TJ = 25
°
C
-4.8 -5.0 -5.2 V
VI = -7V to -20V TJ = 25
°
C
15 150
Line Regulation
∆
V
O
VI = -7V to -20V TJ = 25
°
C
100
mV
IO = 1mA to 100mA, 25
°
C
20 60
Load Regulation
∆
V
O
IO = 1mA to 40mA, 25
°
C
10 30
mV
Ripple Rejection RR VI = -8V to -18V, f=120Hz 41 49 dB
Output Noise Voltage V
N
F= 10Hz to 100Hz TJ = 25
°
C
46
µ
V
Dropout Voltage V
D
TJ = 25
°
C
1.7 V
Quiescent Current
T
J
= 25
°
C
6mA mA
VI = -8V to -20V, TJ = 25
°
C
1.5
Quiescent Current
Change
∆
I
Q
IO = 1mA to 40mA, TJ = 25
°
C
0.1
mA
Electrical Characteristics (LM79L12)
(VI=10V, IO=40mA, 0°C ≤T
J
≤
125 °C, C
I
= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)
Parameter Symbol Conditions MIN TYP MAX UNIT
Output Voltage V
O
TJ = 25
°
C
-11.50 -12 -12.5 V
VI =-14.5V to -27V TJ = 25
°
C
50 250
Line Regulation
∆
V
O
VI =- 14.5V to -27V TJ = 25
°
C
40 200
mV
IO = 1mA to 100mA, 25
°
C
24 100
Load Regulation
∆
V
O
I
O
= 1mA to 40mA, 25
°
C
15 50
mV
Ripple Rejection RR VI = -16V to -27V, f=120Hz 37 42 dB
Output Noise Voltage V
N
F= 10Hz to 100Hz TJ = 25
°
C
80
µ
V
Dropout Voltage V
D
TJ = 25
°
C
1.7 V
Quiescent Current
T
J
= 25
°
C
6.5mA mA
VI = -16V to -27V, TJ = 25
°
C
1.5
Quiescent Current
Change
∆
I
Q
IO = 1mA to 40mA, TJ = 25
°
C
0.1
mA
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