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LM340T-18 数据表(PDF) 3 Page - ON Semiconductor

部件名 LM340T-18
功能描述  THREE TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

LM340T-18 数据表(HTML) 3 Page - ON Semiconductor

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LM340, A Series
3
MOTOROLA ANALOG IC DEVICE DATA
LM340–5.0
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
IO = 5.0 mA to 1.0 A
VO
4.8
5.0
5.2
Vdc
Line Regulation (Note 2)
8.0 Vdc to 20 Vdc
7.0 Vdc to 25 Vdc (TJ = +25°C)
8.0 Vdc to 12 Vdc, IO = 1.0 A
7.3 Vdc to 20 Vdc, IO = 1.0 A (TJ = +25°C)
Regline
50
50
25
50
mV
Load Regulation (Note 2)
5.0 mA
≤ IO ≤ 1.0 A
5.0 mA
≤ IO ≤ 1.5 A (TJ = +25°C)
250 mA
≤ IO ≤ 750 mA (TJ = +25°C)
Regload
50
50
25
mV
Output Voltage
7.0
≤ Vin ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W
VO
4.75
5.25
Vdc
Quiescent Current
IO = 1.0 A
TJ = +25°C
IB
4.0
8.5
8.0
mA
Quiescent Current Change
7.0
≤ Vin ≤ 25 Vdc, IO = 500 mA
5.0 mA
≤ IO ≤ 1.0 A, Vin = 10 V
7.5
≤ Vin ≤ 20 Vdc, IO = 1.0 A
∆IB
1.0
0.5
1.0
mA
Ripple Rejection
IO = 1.0 A (TJ = +25°C)
RR
62
80
dB
Dropout Voltage
VI – VO
1.7
Vdc
Output Resistance (f = 1.0 kHz)
rO
2.0
m
Short Circuit Current Limit (TJ = +25°C)
ISC
2.0
A
Output Noise Voltage (TA = +25°C)
10 Hz
≤ f ≤ 100 kHz
Vn
40
µV
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA
TCVO
±0.6
mV/
°C
Peak Output Current (TJ = +25°C)
IO
2.4
A
Input Voltage to Maintain Line Regulation (TJ = +25°C)
IO = 1.0 A
7.3
Vdc
NOTES: 1. Tlow to Thigh = 0° to +125°C
2. 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.
DEFINITIONS
Line Regulation – The change in output voltage for a
change in the input voltage. The measurement is made
under conditions of low dissipation or by using pulse
techniques such that the average chip temperature is not
significantly affected.
Load Regulation – The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation – The maximum total device
dissipation for which the regulator will operate within
specifications.
Quiescent Current – That part of the input current that is not
delivered to the load.
Output Noise Voltage – The rms AC voltage at the output,
with constant load and no input ripple, measured over a
specified frequency range.


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