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Teilenummer | L7824 |
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Beschreibung | POSITIVE VOLTAGE REGULATORS | |
Hersteller | STMicroelectronics | |
Logo | ||
Gesamt 30 Seiten L78
TO-220
TO-220FP
DPAK
D²PAK
Features
• Output current up to 1.5 A
• Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18;
24 V
• Thermal overload protection
• Short circuit protection
• Output transition SOA protection
• 2 % output voltage tolerance (A version)
• Guaranteed in extended temperature range
(A version)
Positive voltage regulator ICs
Datasheet - production data
Description
The L78 series of three-terminal positive
regulators is available in TO-220, TO-220FP,
D²PAK and DPAK packages and several fixed
output voltages, making it useful in a wide range
of applications.
These regulators can provide local on-card
regulation, eliminating the distribution problems
associated with single point regulation. Each type
embeds internal current limiting, thermal shut-
down and safe area protection, making it
essentially indestructible. If adequate heat sinking
is provided, they can deliver over 1 A output
current. Although designed primarily as fixed
voltage regulators, these devices can be used
with external components to obtain adjustable
voltage and currents.
February 2016
This is information on a product in full production.
DocID2143 Rev 33
1/59
www.st.com
Test circuits
4 Test circuits
Figure 5. DC parameter
L78
Figure 6. Load regulation
Figure 7. Ripple rejection
6/59 DocID2143 Rev 33
6 Page Electrical characteristics
L78
VI = 23 V, IO = 1 A, TJ = 0 to 125 °C (L7815AC), TJ = -40 to 125 °C (L7815AB), unless
otherwise specified(f).
Table 8. Electrical characteristics of L7815A
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VO Output voltage
VO Output voltage
VO Output voltage
ΔVO (1) Line regulation
ΔVO (1) Load regulation
Iq Quiescent current
TJ = 25°C
IO = 5 mA to 1 A, VI = 17.9 to 28 V
IO = 1 A, VI = 28 to 30 V, TJ = 25°C
VI = 17.9 to 30 V, IO = 500 mA,
TJ = 25°C
VI = 20 to 26 V
VI = 20 to 26 V, TJ = 25°C
VI = 17.5 to 30 V, TJ = 25°C
IO = 5 mA to 1 A
IO = 5 mA to 1.5 A, TJ = 25°C
IO = 250 to 750 mA
TJ = 25°C
14.7 15 15.3
14.4 15 15.6
14.4 15 15.6
V
V
V
13 150 mV
16 150 mV
6 75 mV
13 150 mV
25 100
30 100 mV
10 50
4.4 6 mA
6 mA
VI = 17.5 to 30 V, IO = 500 mA
0.8 mA
ΔIq Quiescent current change VI = 17.5 to 30 V, TJ = 25°C
0.8 mA
IO = 5 mA to 1 A
0.5 mA
SVR Supply voltage rejection
VI = 18.5 to 28.5 V, f = 120 Hz,
IO = 500 mA
58 dB
Vd Dropout voltage
IO = 1 A, TJ = 25°C
2V
eN Output noise voltage
TA = 25°C, B = 10Hz to 100 kHz
10 µV/VO
RO Output resistance
f = 1 kHz
19 mΩ
Isc Short circuit current
VI = 35 V, TA = 25°C
0.2 A
Iscp Short circuit peak current TJ = 25°C
2.2 A
ΔVO/ΔT Output voltage drift
-1 mV/°C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
12/59
f. Minimum load current for regulation is 5 mA.
DocID2143 Rev 33
12 Page | ||
Seiten | Gesamt 30 Seiten | |
PDF Download | [ L7824 Schematic.PDF ] |
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