Description
The GM7800 series are classic regulators, which are use-
ful in a wide range of applications. For example, you can
use them for local on-card regulation to eliminate the distri-
bution and problems associated with single point regula-
tion.
The wide range of output voltages (5V to 27V) make them
useful in an endless list of applications. Although designed
as fixed voltage regulators, you can add a few external
components to make adjustable voltages and currents.
Current limiting prevents the peak output current to a safe
value. Safe-area protection of the output transistor limits in-
ternal power dissipation. If internal power dissipation be-
comes too high for the heat sinking provided, the thermal
shutdown circuit activates to prevent the regulator from
overheating. These versatile workhorses are easy to use.
You do not need to bypass the output, although this does
improve transient response. Input bypass is needed only if
you place the regulator far from the filter capacitor of the
power supply.
The GM7800 series is available in TO-220, TO-252 and
TO-263 packages.
Features
Output current up to 1.5A
Output Voltages 5V, 6V, 8V, 8.5V, 9V, 10V,
12V, 15V, 18V, 20V, 24V and 27V
3- Terminal Regulators
Internal Thermal Overload Protection
Internal Short-Circuit Current Limiting
Output Transistor Safe-Area Protection
TO-220, TO-252 and TO-263 Packages
High Power Dissipation Capability
Direct replacements for LM78xx
Application
Post-Regulator Switching DC/DC
Converters
Bias Supply for Analog Circuits
Instrumentation and Audio Systems
Logic Systems
Others too numerous to mention
TYPIC APPLICATION CIRCUITS
V
IN
GM7800
V
OUT
1.5A
0.33µF
0.1µF
GND
For a positive regulator, a 0.33µF bypass capacitor should be used on the input terminals.
While not necessary for stability, an output capacitor of 0.1µF may be used to improve the
transient response of the regulator. These capacitors should be on or as near as possible
to the regulator terminals .
www.gammamicro.com
GM7800 SERIES
V0.1
1
MARKING INFORMATION & PIN CONFIGURATIONS
(TOP VIEW)
TO-263-2 (D PAK)
2
TO-220
TO-252-3 (DPAK)
GM78VV
AYWW
GM78VV
AYWW
GM78VV
AYWW
VV
A
Y
WW
=Output Voltage(05: 5.0V, 12: 12V)
=Assembly Location
=Year
=Weekly
INPUT
GND
OUTPUT
INPUT
GND
OUTPUT
V
IN
V
OUT
TAB is GND
ORDERING INFORMATION
Pro Number
GM7805
GM7806
GM7808
GM7885
GM7809
GM7810
GM7812
GM7815
GM7818
GM7820
GM7824
GM7827
V
OUT
5.0V
6.0V
8.0V
8.5V
9.0V
10V
12V
15V
18V
20V
24V
27V
Package
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
TO-263, TO-220, TO-252
* For detail Ordering Number identification, please see last page.
GM7800 SERIES
RECOMMENDED OPERATING CONDITIONS (I
O
= 1.5A)
PARAMETER
GM7805
GM7806
GM7808
GM7885
GM7809
GM7810
GM7812
GM7815
GM7818
GM7820
GM7824
GM7827
MIN
7
8
10.5
10.5
11.5
12.5
14.5
17.5
21
23
27
30
0
MAX
25
25
25
25
27
28
30
30
33
36
38
40
1.5
125
UNIT
Input Voltage V
I
V
2
Output Current, I
O
Operating virtual junction temperature, T
J
A
°C
ABSOLUTE MAXIMUM RATINGS
PARAMETER
GM7824, GM7827
VALUE
40
UNIT
V
Input Voltage
All others
35
2
W
15
0 to +150
-65 to +150
260
°C
Continuous Total Dissipation at 25°C free-air temperature
Continuous Total Dissipation at (or bellow) 25°C case Temperature
Operating free-air, case, or virtual junctions Temperature Range
Storage Temperature Range
Lead Temperature 1.6mm (1/16 inch) from case for 10seconds
SCHEMATIC BLOCK DIAGRAM
INPUT
Q11
R13
10k
D2
D1
6.3V
R12
200
Q13
Q14
Q15
Q12
Q16
R10
1k
R15
2k
R14
230
R16
0.3k
OUTPUT
R17
R1
30k
Q1
Q6
V
REF
R9
4k
R2
1.9k
R7
17k
C1
20pF
Q10
Q7
Q8
Q3
Q5
R8
4k
R18
2.6k
Q2
R3
26
Q4
R4
1.2k
R5
12.1k
R6
1k
Q9
GND
GM7800 SERIES
3
ELECTRICAL CHARACTERISTICS at specified Junction Temperature
GM7805:
V
I
= 10V, I
O
= 500mA, (unless otherwise noted)
CHARACTERISTICS
Output Voltage **
TEST CONDITIONS *
25°C
I
O
= 5mA to 1A
V
I
=7V to 20V, P
V
I
=7V to 25V
V
I
=8V to 12V
V
I
=8V to 18V, f = 120Hz
I
O
=5mA to 1.5A
I
O
=250mA to 750mA
f = 1kHz
I
O
= 5mA
f = 10Hz to 100kHz
I
O
= 1A
V
I
= 7V to 25V
I
O
=5mA to 1A
15W
0°C to 125°C
25°C
0°C to 125°C
25°C
0°C to 125°C
0°C to 125°C
25°C
25°C
25°C
0°C to 125°C
25°C
25°C
MIN
4.8
4.75
TYP
5.0
5.0
3
1
MAX
5.2
5.25
100
50
100
50
UNIT
V
Input Regulation
Ripple Rejection
Output Regulation
Output Resistance
Temperature Coefficient
Output Voltage
Output Noise Voltage
Dropout Voltage
Bias Current
Bias Current Change
Short-Circuit Output Current
Peak Output Current
mV
dB
mV
W
mV/°C
µV
V
62
78
15
5
0.017
-1.1
40
2.0
4.2
8
1.3
0.5
750
2.2
mA
mA
mA
A
GM7806:
V
I
= 11V, I
O
= 500mA, (unless otherwise noted)
CHARACTERISTICS
Output Voltage **
TEST CONDITIONS *
25°C
I
O
= 5mA to 1A
V
I
=8V to 21V, P
V
I
=8V to 25V
V
I
=9V to 13V
V
I
=9V to 19V, f = 120Hz
I
O
=5mA to 1.5A
I
O
=250mA to 750mA
f = 1kHz
I
O
= 5mA
f = 10Hz to 100kHz
I
O
= 1A
V
I
= 8V to 25V
I
O
=5mA to 1A
15W
0°C to 125°C
25°C
0°C to 125°C
25°C
0°C to 125°C
0°C to 125°C
25°C
25°C
25°C
0°C to 125°C
25°C
25°C
MIN
5.75
5.7
TYP
6
6
5
1.5
MAX
6.25
6.3
120
60
120
60
UNIT
V
Input Regulation
Ripple Rejection
mV
dB
mV
W
mV/°C
µV
V
59
75
14
4
0.019
-0.8
45
2.0
4.3
8
1.3
0.5
550
2.2
GM7800 SERIES
Output Regulation
Output Resistance
Temperature Coefficient
Output Voltage
Output Noise Voltage
Dropout Voltage
Bias Current
Bias Current Change
Short-Circuit Output Current
Peak Output Current
mA
mA
mA
A
*Pulse testing tehniques are used to maintain the junction temperature as close to the ambient temperature as possible.
Thermal effects must be taken into account.
** The specification applies only for DC power dissipation permitted by absolute maximum ratings
4
ELECTRICAL CHARACTERISTICS at specified Junction Temperature
GM7808:
V
I
=14V, I
O
=500mA, (unless otherwise noted)
CHARACTERISTICS
Output Voltage **
TEST CONDITIONS *
25°C
I
O
= 5mA to 1A
V
I
=10.5V to 23V, P
V
I
=10.5V to 25V
V
I
=11V to 17V
V
I
=11.5V to 21.5V, f = 120Hz
I
O
=5mA to 1.5A
I
O
=250mA to 750mA
f = 1kHz
I
O
= 5mA
f = 10Hz to 100kHz
I
O
= 1A
V
I
= 10.5V to 25V
I
O
=5mA to 1A
15W
0°C to 125°C
25°C
0°C to 125°C
25°C
0°C to 125°C
0°C to 125°C
25°C
25°C
25°C
0°C to 125°C
25°C
25°C
MIN
7.7
7.6
TYP
8
8
6
2
MAX
8.3
8.4
160
80
160
80
UNIT
V
Input Regulation
Ripple Rejection
Output Regulation
Output Resistance
Temperature Coefficient
Output Voltage
Output Noise Voltage
Dropout Voltage
Bias Current
Bias Current Change
Short-Circuit Output Current
Peak Output Current
mV
dB
mV
W
mV/°C
µV
V
55
72
12
4
0.016
-0.8
52
2.0
4.3
8
1.0
0.5
450
2.2
mA
mA
mA
A
GM7885:
V
I
=15V, I
O
=500mA, (unless otherwise noted)
CHARACTERISTICS
Output Voltage **
TEST CONDITIONS *
25°C
I
O
= 5mA to 1A
V
I
=11.5V to 23.5V, P
V
I
=10.5V to 25V
V
I
=11V to 17V
V
I
=11.5V to 21.5V, f = 120Hz
I
O
=5mA to 1.5A
I
O
=250mA to 750mA
f = 1kHz
I
O
= 5mA
f = 10Hz to 100kHz
I
O
= 1A
V
I
= 10.5V to 25V
I
O
=5mA to 1A
15W
0°C to 125°C
25°C
0°C to 125°C
25°C
0°C to 125°C
0°C to 125°C
25°C
25°C
25°C
0°C to 125°C
25°C
25°C
MIN
8.15
8.1
TYP
8.5
8.5
6
2
MAX
8.85
8.9
170
85
170
85
UNIT
V
Input Regulation
Ripple Rejection
Output Regulation
Output Resistance
Temperature Coefficient
Output Voltage
Output Noise Voltage
Dropout Voltage
Bias Current
Bias Current Change
Short-Circuit Output Current
Peak Output Current
mV
dB
mV
W
54
70
12
4
0.016
-0.8
55
2.0
4.3
8
1.0
0.5
450
2.2
µV
V
mA
mA
mA
A
*Pulse testing tehniques are used to maintain the junction temperature as close to the ambient temperature as possible.
Thermal effects must be taken into account.
** The specification applies only for DC power dissipation permitted by absolute maximum ratings
GM7800 SERIES
5
mV/°C
