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LT3050 Datasheet(PDF) 11 Page - Linear Technology

Part # LT3050
Description  100mA, Low Noise Linear Regulator With Precision Current Limit And Diagnostic Functions
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3050 Datasheet(HTML) 11 Page - Linear Technology

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LT3050
11
3050f
For detailed information on how to set the IMIN pin resistor
value, please see the Operation section.
The IMAX pin requires a 10nF decoupling capacitor to
ground. If not used, tie IMAX to GND.
IMON (Pin 12): Output Current Monitor. This pin is the
collector of a PNP current mirror that outputs 1/100th
PIN FUNCTIONS
of the power PNP current. When OUT = IMON, the pin
current exactly equals 1/100th that of the output current.
For detailed information on how to calculate the output
current from the IMONpin,pleaseseetheOperationsection.
The IMON pin requires a small (22nF minimum) external
decoupling capacitor. If the IMON pin is not used, it must
be tied to GND.
BLOCK DIAGRAM
+
–
+
–
4
9
11
12
2
3
1
IN
5, 6
R1
D1
Q3
QIMIN
1/200
QIMON
1/100
QIMAX
1/200
QPOWER
1
IMAX
IMIN
FAULT
IMON
QFAULT
U1
GND
10, 13
REF/BYP
SHDN
ADJ
30k
R4
IDEAL DIODE
D3
Q2
D2
ERROR
AMPLIFIER
THERMAL/
CURRENT LIMITS
CURRENT
LIMIT
AMPLIFIER
100k
R3
IMIN
COMPARATOR
100k
R2
600mV
REFERENCE
3050 BD01
OUT
7, 8
+
–


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