LM3411AM5-5.0 National Semiconductor, LM3411AM5-5.0 Datasheet - Page 12

• Manufacturer Part Number: LM3411AM5-5.0
• Description: IC REG/DRIVER SECONDARY SOT23-5
• Manufacturer: National Semiconductor

Specifications of LM3411AM5-5.0

• Reference Type: Shunt
• Voltage - Output: 5V
• Tolerance: ±0.5%
• Number Of Channels: 1
• Current - Cathode: 110µA
• Current - Output: 15mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-74A, SOT-753
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Input: -
• Temperature Coefficient: -
• Current - Quiescent: -
• Other names: LM3411AM5-5.0TR

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Applications Information
limit feature as shown in Figure 11. Current limit tolerances
of
possible with this circuit.
A simple 5V supply monitor circuit is shown in Figure 12.
Using the LM3411’s voltage reference, op-amp (as a com-
parator) and output driver, this circuit provides a LED indica-
tion of the presence of the 5V supply.
The LM3411 initial room temperature tolerance is
a trim scheme is shown in Figure 13 that provides approxi-
mately
(V
±
FIGURE 12. 4.7V Power ON Detector with Hysteresis
0.5% for the “A” grade part. If a tighter tolerance is needed,
REG
±
FIGURE 10. Precision Negative Voltage Regulator
4% over manufacturing and temperature variations are
).
±
FIGURE 11. Precision Negative Voltage
Regulator with Accurate Current Limit
1% adjustment range of the regulation voltage
(Continued)
01198724
±
1% and
01198722
01198723
12
The LM3411 is guaranteed to drive a 15 mA load, but if more
current is needed, a NPN boost transistor can be added. The
circuit shown in Figure 14 is a shunt regulator capable of
providing excellent regulation over a very wide range of
current.
Perhaps one of the simplest applications for the LM3411 is
the voltage detector circuit shown in Figure 15 . The OUT pin
is low when the input voltage is less than V
V(IN) pin rises above V
internal NPN output resistor.
Also an overvoltage detector, the crowbar circuit shown in
Figure 16 is normally located at the output of a power supply
to protect the load from an overvoltage condition should the
power supply fail with an input/output short.
FIGURE 14. 250 mA Shunt Regulator
FIGURE 13.
FIGURE 15. Voltage Detector
REG
±
50 mV External Trim
, the OUT pin is pulled high by the
01198727
01198726
REG
01198725
. When the