LT3050EDDB LINER [Linear Technology], LT3050EDDB Datasheet - Page 4

• Manufacturer Part Number: LT3050EDDB
• Description: 100mA, Low Noise Linear Regulator With Precision Current Limit And Diagnostic Functions
• Manufacturer: LINER [Linear Technology]

LT3050
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum I
I
Current Monitor Ratio (Note10)
Ratio = I
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime. Absolute maximum input-to-output differential
voltage is not achievable with all combinations of rated IN pin and OUT pin
voltages. With the IN pin at 50V, the OUT pin may not be pulled below 0V.
The total differential voltage from IN to OUT must not exceed ±50V.
Note 2: The LT3050 is tested and specifi ed under pulse load conditions
such that T
Performance at –40°C and 125°C is assured by design, characterization
and correlation with statistical process controls. The LT3050I is
guaranteed over the full –40°C to 125°C operating junction temperature
range. The LT3050MP is 100% tested over the –55°C to 125°C operating
junction temperature range.
Note 3: The LT3050 is tested and specifi ed for these conditions with ADJ
pin connected to the OUT pin.
Note 4: Maximum junction temperature limits operating conditions.
Regulated output voltage specifi cations do not apply for all possible
combinations of input voltage and output current. If operating at the
maximum input voltage, limit the output current range. If operating at the
maximum output current, limit the input voltage range.
Note 5: Dropout voltage is the minimum differential IN-to-OUT voltage
needed to maintain regulation at a specifi ed output current. In dropout,
the output voltage equals (V
minimum input voltage requirements limit dropout voltage.
Note 6: To satisfy minimum input voltage requirements, the LT3050 is
tested and specifi ed for these conditions with an external resistor divider
(60k bottom, 440k top) which sets V
divider adds 10μA of DC load on the output. This external current is not
factored into GND pin current.
4
temperature range, otherwise specifi cations are at T
MIN
IMON
Threshold Accuracy (Note 9)
= V
OUT
OUT
MIN
J
/I
~ T
MON
= 5V, 5.6V < V
Threshold Accuracy (Note 9)
A
. The LT3050E is 100% production tested at T
IN
IN
< 15V
- V
DROPOUT
OUT
to 5V. The external resistor
). For some output voltages,
CONDITIONS
5.6V < V
5.6V < V
I
LOAD
= 5mA, 25mA, 50mA, 75mA, 100mA
IN
IN
< 15V, V
< 15V, V
A
A
= 25°C. (Note 2)
= 25°C.
OUT
OUT
The
= 5V, R
= 5V, R
l
denotes the specifi cations which apply over the full operating
IMIN
IMIN
Note 7: GND pin current is tested with V
current source load. GND pin current increases in dropout. See GND pin
current curves in the Typical Performance Characteristics section.
Note 8: Current limit varies inversely with the external resistor value tied
from the I
I
current limit is not needed, the I
protection circuitry implements short-circuit protection as specifi ed.
Note 9: The I
I
For detailed information on how to set the I
see the Operation section. I
specifi cation in the Electrical Characteristics section are not guaranteed
to ± 10% tolerance. If the I
must be left fl oating (unconnected).
Note 10: The current monitor ratio varies slightly when V
detailed information on how to calculate the output current from the I
pin, please see the Operation section. If the current monitor function is not
needed, the I
Note 11: To satisfy requirements for minimum input voltage, current limit
is tested at V
Note 12: ADJ pin bias current fl ows out of the ADJ pin:
Note 13: SHDN pin current fl ows into the SHDN pin.
Note 14: Reverse output current is tested with the IN pin grounded and the
OUT pin forced to the specifi ed voltage. This current fl ows into the OUT pin
and out of the GND pin.
Note 15: 100mA of output current does not apply to the full range of input
voltage due to the internal current limit foldback.
MAX
MIN
= 110K
= 11.3K
threshold defi ned by an external resistor from the I
pin resistor value, please see the Operation section. If a programmed
MAX
MON
IN
MIN
pin to GND. For detailed information on how to set the
= V
fault condition asserts if the output current falls below the
pin must be tied to GND.
OUT(NOMINAL)
MIN
MIN
l
l
l
fault condition is not needed, the I
settings below the Minimum I
MAX
+1V or V
MIN
pin must be tied to GND and internal
0.9
95
9
IN
IN
= V
MIN
= 2.2V, whichever is greater.
OUT(NOMINAL)
TYP
100
pin resistor value, please
10
1
MIN
IMON
MAX
105
1.1
11
+ 0.5V and a
pin to GND.
MIN
≠ V
MIN
Accuracy
OUT
UNITS
pin
. For
MON
3050f
mA
mA