Document
LESHAN RADIO COMPANY, LTD.
LR7800 Series3-Terminal 1A Positive Voltage Regulators
DESCRIPTION
The LRC LR78XX family is monolithic fixed voltage regulator integrated circuit. They are suitable for applications that required supply current up to 1 A.
FEATURES
*Output current up to 1A *Fixed output voltage of 5V, 6V, 7V, 8V,9V,10V, 12V, 15V ,18V and 24V available *Thermal overload shutdown protection *Short circuit current limiting
1
23
TO-220 1: Input 2: GND 3: Output
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
PARAMETER Input voltage (for Vo=5~18V)
(for Vo=24V) Output Current Power Dissipation Thermal Resistance Junction-Air Thermal Resistance Junction-Cases Operating Junction Temperature Range Storage Temperature Range
SYMBOL
VI
Io PD R T JA R T JC Topr Tstg
RATING 35 40 1
Internally Limited 65 5
0 ~ +150 -55 ~ +150
UNIT V V A W
qC/W qC/W qC
qC
APPLICATION CIRCUIT
Vi
C1 0.33 PF
1 LR78XX 2
3 Vo
C0 0.1 PF
Note 1: To specify an output voltage, substitute voltage value for "XX". Note 2: Bypass capacitors are recommended for optimum stability and transient response and should be located
as close as possible to the regulators.
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LESHAN RADIO COMPANY, LTD.
LR7800 Series3-Terminal 1A Positive Voltage Regulators
LR7805 ELECTRICAL CHARACTERISTICS
( VI=10V, Io=0.5A, Tj= 0qC - 125qC, C1=0.33uF, Co=0.1uF, unless otherwise specified )(Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
Output Voltage
Tj=25qC, IO=5mA - 1.0A
4.80 5.0
Vo VI =7.5V to 20V, IO=5mA - 1.0A,PD̰15W
4.75
Load Regulation
'Vo
Tj=25qC,IO=5mA - 1.0A Tj=25qC,IO=0.25A - 0.75A
9 4
Line regulation Quiescent Current
'Vo
VI =7V to 25V,Tj=25qC VI =8V to 12V,Tj=25qC
Iq Tj=25qC, IO̰1.0A
Quiescent Current Change
'Iq
VI =7.5V to 20V IO=5mA - 1.0A
Output Noise Voltage
VN 10Hz̰f̰100kHz
42
Ripple Rejection
RR VI =8V - 18V,f=120Hz,Tj=25qC
62 73
Peak Output Current
IPK Tj=25qC
1.8
Short-Circuit Current
ISC VI=35V, Tj=25qC
250
Dropout Voltage
Vd Tj=25qC
2.0
MAX 5.20
5.25
100 50 100 50 8.0 1.3 0.5
UNIT V
V
mV mV mV mV mA mA mA PV dB A mA V
LR7806 ELECTRICAL CHARACTERISTICS
( VI=11V, Io=0.5A, Tj= 0qC - 125qC, C1=0.33uF, Co=0.1uF, unless otherwise specified )(Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
Output Voltage
Tj=25qC, IO=5mA - 1.0A
5.75 6.0
Vo VI =8.5V to 21V, IO=5mA - 1.0A, PD̰15W
5.70
Load Regulation
'Vo
Tj=25qC,IO=5mA - 1.0A Tj=25qC,IO=0.25A - 0.75A
Line regulation Quiescent Current
'Vo
VI =8V to 25V,Tj=25qC VI =8.5V to 21V,Tj=25qC,Io=1.0A
Iq Tj=25qC, IO̰1.0A
Quiescent Current Change
'Iq
VI =8.5V to 21V IO=5mA - 1.0A
Output Noise Voltage
VN 10Hz̰f̰100kHz
45
Ripple Rejection
RR VI =9V - 19V,f=120Hz,Tj=25qC
59 75
Peak Output Current
IPK Tj=25qC
1.8
Short-Circuit Current
ISC VI=35V, Tj=25qC
550
Dropout Voltage
Vd Tj=25qC
2.0
MAX 6.25
6.30
120 60
120 60 8.0 1.3 0.5
UNIT V
V
mV mV mV mV mA mA mA PV dB A mA V
2/7
LESHAN RADIO COMPANY, LTD.
LR7800 Series3-Terminal 1A Positive Voltage Regulators
LR7807 ELECTRICAL CHARACTERISTICS
( VI=13V, Io=0.5A, Tj= 0qC - 125qC, C1=0.33uF, Co=0.1uF, unless otherwise specified )(Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
Output Voltage
Tj=25qC, IO=5mA - 1.0A
6.72 7.0
Vo VI =9.5V to 22V, IO=5mA - 1.0A, PD̰15W
6.65
Load Regulation
'Vo
Tj=25qC,IO=5mA - 1.0A Tj=25qC,IO=0.25A - 0.75A
Line regulation Quiescent Current
'Vo
VI =9V to 25V,Tj=25qC VI =9.5V to 22V,Tj=25qC,Io=1.0A
Iq Tj=25qC, IO̰1.0A
Quiescent Current Change
'Iq
VI =9.5V to 22V IO=5mA - 1.0A
Output Noise Voltage
VN 10Hz̰f̰100kHz
50
Ripple Rejection
RR VI =10V - 20V,f=120Hz,Tj=25qC
59 75
Peak Output Current
IPK Tj=25qC
1.7
Short-Circuit Current
ISC VI=35V, Tj=25qC
250
Dropout Voltage
Vd Tj=25qC
2.0
MAX 7.28
7.35
120 60 120 60 8.0 1.0 0.5
UNIT V
V
mV mV mV mV mA mA mA PV dB A mA V
LR7808 ELECTRICAL CHARACTERISTICS
( VI=14V, Io=0.5A, Tj= 0qC - 125qC, C1=0.33uF, Co=0.1uF, unless otherwise specified )(Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
Output Voltage
Tj=25qC, IO=5mA - 1.0A
7.68 8.0
Vo VI =10.5V to 23V, IO=5mA - 1.0A, PD̰15W
7.60
Load Regulation
'Vo
Tj=25qC,IO=5mA - 1.0A Tj=25qC,IO=0.25A - 0.75A
Line regulation
'Vo
VI =10.5V to 25V,Tj=25qC VI =10.5V to 23V, Tj=25qC,Io=1.0A
Quiescent Current
Iq Tj=25qC, IO̰1.0A
Quiescent Current Change
'Iq
VI =10.5V to 23V IO=5mA - 1.0A
Output Noise Voltage
VN 10Hz̰f̰100kHz
52
Ripple Rejection
RR VI =11.5V to 21.5V,
56 72
f=120Hz,Tj=25qC
Peak Output Current
IPK Tj=25qC
1.8
Short-Circuit Current
ISC VI=35V, Tj=25qC
450
Dropout Voltage
Vd Tj=25qC
2.0
MAX 8.32
8.40
160 80 160 80 8.0 1.0 0.5
UNIT V
V
mV mV mV mV mA mA mA PV dB
A mA V
3/7
LESHAN RADIO COMPANY, LTD.
LR7800 Series3-Terminal 1A Positive Voltage Regulators
LR7809 ELECTRICAL CHARACTERISTICS
( VI=15V, Io=0.5A, Tj= 0qC - 125qC, C1=0.33uF, Co=0.1uF, unless otherwise specified )(Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
Output Voltage
Tj=25qC,.