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LM2937ET-2.5 датащи(PDF) 3 Page - Texas Instruments

номер детали LM2937ET-2.5
подробное описание детали  LM2937-2.5, LM2937-3.3 400mA and 500mA Voltage Regulators
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LM2937ET-2.5 датащи(HTML) 3 Page - Texas Instruments

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LM2937-2.5, LM2937-3.3
www.ti.com
SNVS015E – FEBRUARY 1998 – REVISED APRIL 2013
Electrical Characteristics
(1)
VIN = VNOM + 5V, IOUTmax = 500 mA for the TO-220 and DDPAK/TO-263 packages, IOUTmax=400mA for the SOT-223 package,
COUT = 10 μF unless otherwise indicated. Boldface limits apply over the entire operating temperature range, of the
indicated device, all other specifications are for TA = TJ = 25°C.
Output Voltage (VOUT)
2.5V
3.3V
Units
Parameter
Conditions
Typ
Limit
Typ
Limit
Output Voltage
5 mA
≤ IOUT ≤ IOUTmax
2.42
3.20
V (Min)
2.5
2.38
3.3
3.14
V(Min)
2.56
3.40
V(Max)
2.62
3.46
V(Max)
Line Regulation(2)
4.75V
≤ VIN ≤ 26V,
7.5
25
9.9
33
mV(Max)
IOUT = 5 mA
Load Regulation
5 mA
≤ IOUT ≤ IOUTmax
2.5
25
3.3
33
mV(Max)
Quiescent Current
7V
≤ VIN ≤ 26V,
2
10
2
10
mA(Max)
IOUT = 5 mA
VIN = (VOUT + 5V),
10
20
10
20
mA(Max)
IOUT = IOUTmax
VIN = 5V, IOUT = IOUTmax
66
100125
66
100125
mA(Max)
Output Noise Voltage
10 Hz–100 kHz,
75
99
μVrms
IOUT = 5 mA
Long Term Stability
1000 Hrs.
10
13.2
mV
Short-Circuit Current
1.0
0.6
1.0
0.6
A(Min)
Peak Line Transient Voltage
tf < 100 ms, RL = 100Ω
75
60
75
60
V(Min)
Maximum Operational Input
26
26
V(Min)
Voltage
Reverse DC Input Voltage
VOUT ≥ −0.6V, RL = 100Ω
−30
−15
−30
−15
V(Min)
Reverse Transient Input
tr < 1 ms, RL = 100Ω
−75
−50
−75
−50
V(Min)
Voltage
(1)
Typicals are at TJ = 25°C and represent the most likely parametric norm.
(2)
The minimum input voltage required for proper biasing of these regulators is 4.75V. Below this level the outputs will fall out of regulation.
This effect is not the normal dropout characteristic where the output falls out of regulation due to the PNP pass transistor entering
saturation. If a value for worst case effective input to output dropout voltage is required in a specification, the values should be 2.37V
maximum for the LM2937-2.5 and 1.6V maximum for the LM2937-3.3.
Copyright © 1998–2013, Texas Instruments Incorporated
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Product Folder Links: LM2937-2.5 LM2937-3.3


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