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PDF PJ7812B Data sheet ( Hoja de datos )
| Número de pieza | PJ7812B | |
| Descripción | 3-Terminal Fixed Voltage Positive Regulators | |
| Fabricantes | Promax-Johnton | |
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PJ7800B Series
3-Terminal Fixed Voltage Positive Regulators
These voltage regulators are monolithic integrated
circuits designed as fixed-voltage regulators for a wide
variety of applications including local, on-card regulation.
These regulators employ internal current limiting, thermal
shutdown, and safe-area
compensation.
FEATURES
• Output Current up to 1 Ampere
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short-Circuit Current Limiting
• Output Transistor Safe-Area Compensation
• Output Voltage Offered in 4% Tolerance
CIRCUIT SCHEMATIC
Representative Schematic Diagram
With adequate heatsinking they can deliver output currents
up to 1 ampere.
Although designed primarily as a fixed voltage
regulator, these devices can be used with external
components to obtain adjustable voltages and currents.
PIN ARRANGEMENT
TO-220
TO-220F
Pin: 1.Input
2.Ground
3.Output
(Heatsink surface connected to Pin 2.)
ORDERING INFORMATION
Device
PJ78xxCZ
PJ78xxCI
Operating Temperature
0°C ~ +70°C
Package
TO-220
TO-220F
Standard Application
A common ground is required between the input and
the output voltages. The input voltage must remain
typically 2.0V above the output voltage even during
the low point on the Input ripple voltage.
XX = these two digits of the type number indicate
voltage.
* = Cin is required if regulator is located an
appreciable distance from power supply filter.
** = Co is not needed for stability; however, it does
improve transient response.
1-9 2003/06.rev.B
1 page  
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PJ7800B Series
3-Terminal Fixed Voltage Positive Regulators
• PJ7812B ELECTRICAL CHARACTERISTICS
Vin=19V, Iout=500mA, 0℃≤Tj≤125℃, Cin=0.33μF, Cout=0.1μF; unless otherwise specified.)
CHARACTERISTICS
SYMBOL
TEST CONDITIONS
MIN. TYP.
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Voltage Drop
Output Resistance
Output Short Circuit Current
Peak Output Current
Temperature Coefficient of
Output Voltage
Vout
REGline
REGload
Iq
Δlq
Vn
RR
Vdrop
Rout
Ios
Io peak
Tj=25℃
14.5V≤Vin≤27V, 5mA≤Iout≤1A, PD ≤15W
Tj=25℃
14V≤Vin≤30V
15V≤Vin≤19V
Tj=25℃
10mA≤Iout≤1A
250mA≤Iout≤750mA
Tj=25℃, Iout=0
14.5V≤Vin≤30V
5mA≤Iout≤1A
10Hz≤f≤100KHz, Tj=25℃
f=120Hz, 15V≤Vin≤25V
Iout=1.0A, Tj=25℃
f=1KHz
Tj=25℃
Tj=25℃
ΔVout/ΔTj Iout=5mA, 0℃≤Tj≤125℃
11.53
11.42
--
--
--
--
--
--
--
--
55
--
--
--
--
--
12
12
10
3
12
4
4.3
--
--
75
71
2
18
350
2.2
-1
MAX.
12.48
12.60
240
120
240
120
8
1
0.5
--
--
--
--
--
--
UNIT
V
mV
mV
mV
mV
mA
mA
mA
μV
dB
V
mΩ
mA
A
-- mV/℃
• PJ7815B ELECTRICAL CHARACTERISTICS
(Vin=23V, Iout=500mA, 0℃≤Tj≤125℃, Cin=0.33μF, Cout=0.1μF; unless otherwise specified.)
CHARACTERISTICS
SYMBOL
TEST CONDITIONS
MIN. TYP. MAX. UNIT
Output Voltage
Vout
Tj=25℃
17.5V≤Vin≤30V, 5mA≤Iout≤1A, PD ≤15W
14.42
14.28
15
15
15.60
15.75
V
Line Regulation
REGline Tj=25℃
17.5V≤Vin≤30V
18V≤Vin≤22V
-- 12 300 mV
-- 3 150 mV
Load Regulation
REGload Tj=25℃
10mA≤Iout≤1A
250mA≤Iout≤750mA
-- 12 300 mV
-- 4 150 mV
Quiescent Current
Iq Tj=25℃, Iout=0
-- 4.3 8 mA
Quiescent Current Change
Δlq
17.5V≤Vin≤30V
5mA≤Iout≤1A
-- -- 1 mA
-- -- 0.5 mA
Output Noise Voltage
Vn 10Hz≤f≤100KHz, Tj=25℃
-- 90 -- μV
Ripple Rejection Ratio
RR f=120Hz, 18V≤Vin≤28V
54 70 -- dB
Voltage Drop
Vdrop Iout=1.0A, Tj=25℃
-- 2 -- V
Output Resistance
Rout f=1KHz
-- 19 -- mΩ
Output Short Circuit Current
Ios Tj=25℃
-- 230 -- mA
Peak Output Current
Io peak Tj=25℃
-- 2.2 --
A
Temperature Coefficient of
Output Voltage
ΔVout/ΔTj Iout=5mA, 0℃≤Tj≤125℃
-- -1 -- mV/℃
* Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible, and
thermal effects must be taken into account separately.
** This specification applies only for DC power dissipation permitted by absolute maximum ratings.
5-9 2003/06.rev. B
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet PJ7812B.PDF ] | |
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