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Teilenummer | PJ7800 |
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Beschreibung | 3-Terminal Fixed Voltage Positive Regulators | |
Hersteller | ETC | |
Logo | ||
Gesamt 9 Seiten PJ7800 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
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.)
Representative Schematic Diagram
Standard Application
TYPICAL CONNECTING CIRCUIT
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 2002/01.rev.A
PJ7800 Series
3-Terminal Fixed Voltage Positive Regulators
• PJ7818 ELECTRICAL CHARACTERISTICS
(Vin=27V, Iout=500mA, 0℃≤Tj≤125℃, Cin=0.33μF, Cout=0.1μF; unless otherwise specified.)
CHARACTERISTICS
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
SYMBOL
Vout
REGline
REGload
Iq
Δlq
Vn
RR
Vdrop
Rout
Ios
Io peak
ΔVout/ΔTj
TEST CONDITIONS
Tj=25℃
21V≤Vin≤33V, 5mA≤Iout≤1.5A, PD ≤15W
21V≤Vin≤33V
Tj=25℃ 22V≤Vin≤26V
10mA≤Iout≤1.5A
Tj=25℃ 250mA≤Iout≤750mA
Tj=25℃, Iout=0
21V≤Vin≤33V
5mA≤Iout≤1.5A
10Hz≤f≤100KHz, Tj=25℃
f=120Hz, 21V≤Vin≤31V
Iout=1.0A, Tj=25℃
f=1KHz
Tj=25℃
Tj=25℃
Iout=5mA, 0℃≤Tj≤125℃
MIN.
17.30
17.14
--
--
--
--
--
--
--
--
54
--
--
--
--
--
TYP.
18
18
15
5
12
4
4.5
--
--
110
70
2
22
200
2.2
-1
MAX.
18.72
18.90
360
180
360
180
8
1
0.5
--
--
--
--
--
--
--
UNIT
V
mV
mV
mV
mV
mA
mA
mA
μV
dB
V
mΩ
mA
A
mV/℃
PJ7824 BELECTRICAL CHARACTERISTICS
(Vin=33V, 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℃
23.07 24 24.96 V
26V≤Vin≤38V, 5mA≤Iout≤1.5A, PD ≤15W 22.85 24 25.20
Line Regulation
REGline Tj=25℃
26V≤Vin≤38V
27V≤Vin≤32V
-- 18 480 mV
-- 6 240 mV
Load Regulation
REGload Tj=25℃
10mA≤Iout≤1.5A
250mA≤Iout≤750mA
-- 12 480 mV
-- 4 240 mV
Quiescent Current
Iq Iout=0, Tj=25℃
-- 4.6 8 mA
Quiescent Current Change
Δlq
26V≤Vin≤38V
5mA≤Iout≤1.5A
-- -- 1 mA
-- -- 0.5 mA
Output Noise Voltage
Vn 10Hz≤f≤100KHz, Tj=25℃
-- 170 -- μV
Ripple Rejection Ratio
RR f=120Hz, 26V≤Vin≤36V
54 70
-- dB
Voltage Drop
Vdrop Iout=1.0A, Tj=25℃
-- 2 -- V
Output Resistance
Rout f=1KHz
-- 28 -- mΩ
Output Short Circuit Current
Ios Tj=25℃
-- 150 -- mA
Peak Output Current
Io peak Tj=25℃
-- 2.2 --
A
Temperature Coefficient of
ΔVout/ΔTj Iout=5mA, 0℃≤Tj≤125℃
-- -1.5 -- mV/℃
Output Voltage
* 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.
6-9 2002/10.rev. A
6 Page | ||
Seiten | Gesamt 9 Seiten | |
PDF Download | [ PJ7800 Schematic.PDF ] |
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