D79XX
3-Pin Negative Output Voltage Regulator(1A Type)
Shaoxing Silicore Technology Co.,Ltd CHMC Apr. 2023 Rev. 2.1
www. silicore. com. cn
Page 1 of 15
General Description
The D79XX series is 3-pin fixed negative output type monolithic voltage regulators.
A stabilized fixed negative output voltage is obtained from an unstable DC input
voltage without using any external parts. Eleven types of fixed output voltage are
available from –5V through –10V, –12V, –15V, –18V, –20V, and –24V. They can
be used widely as power circuits with a current capacitance of up to 1A
.
D79XX is available in TO220 package.
Features
No external components
Output voltage : D7905: –5V, D7906: –6V, D7907: –7V, D7908: –8V,
D7909: –9V, D7910: –10V, D7912: –12V, D7915: –15V,
D7918: –18V, D7920: –20V, D7924: –24V
Overcurrent limit circuit built-in
Thermal over-load protection built-in
Area of safe operation (ASO) circuit built-in
Block Diagram
TO220
D79XX
Shaoxing Silicore Technology Co.,Ltd CHMC Apr. 2023 Rev. 2.1
www. silicore. com. cn
Page 2 of 15
Absolute Maximum Ratings (Ta=25
C)
Characteristics
Symbol
Value
Units
Input Voltage
Vi
-35 *1
V
-40 *2
Power dissipation
PD
15 *3
W
Operating Temperature Range
T
OPR
-30~+80
C
Storage Temperature Range
T
STG
-55~+150
C
Thermal Resistance Junction-Case
R
θJC
5
C/W
Thermal Resistance Junction-Air
R
θJA
65
C/W
*1 D7905, D7906, D7907, D7908, D7909, D7910, D7912, D7915, D7918
*2 D7920, D7924
*3 Follow the derating curve. When Tj exceeds 150˚C, the internal circuit shuts off the output.
D7905 Electrical Characteristics (-5V,Type; Ta=25
C)
Characteristics
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Voltage
Vo
T
J
=+25°C
-4.8
-5.0
-5.2
V
Output Voltage
tolerance
Vi=-7V to -20V,I
O
=5mA to 1A
P
D
≤15W
-4.75
-5.25
Line Regulation
REG
IN
T
J
=+25°C
Vi=-7V to -25V
3
100
mV
Vi=-8V to -12V
1
5
Load Regulation
REG
L
T
J
=+25°C
Io=5mA to 1.5A
10
100
mV
Io=250 to 750mA
3
50
Bias Current
I
bias
T
J
=+25°C
2
4
mA
Input bias
fluctuation
ΔI
bias(IN)
Vi=-7V to -25V, T
J
=+25°C
1.3
mA
Load bias current
fluctuation
ΔI
bias(L)
I
O
=5mA to 1A, T
J
=+25°C
0.5
mA
Output noise
voltage
Vno
f=10Hz to 100kHz, T
J
=+25°C
40
µV
Ripple rejection
ratio
RR
Vi=-8V to -18V, I
O
=100mA
f=120Hz
62
74
dB
Minimum i/o voltagw
difference
V
DIF(min)
I
O
=1A, T
J
=+25°C
1.1
V
Peak output
current
I
O(Peak)
T
J
=+25°C
2.1
A
Outputvoltage
temperaturecoeffiient
ΔI
O
/Ta
I
O
=5mA, T
J
=0 to 125°C
-0.4
mV/C
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within
10ms) that the drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) Unless otherwise specified, V
I
=–10V, I
O
=500mA, C
I
=2μF, C
O
=1μF, Tj=0 to 125˚C