LT3050EDDB#PBF Linear Technology, LT3050EDDB#PBF Datasheet - Page 5

• Manufacturer Part Number: LT3050EDDB#PBF
• Description: IC ADJ LDO REG 0.6V TO 44.5V 0.1A DFN-12
• Manufacturer: Linear Technology

Specifications of LT3050EDDB#PBF

• Primary Input Voltage: 45V
• Output Voltage Adjustable Range: 0.6V To 44.5V
• Dropout Voltage Vdo: 340mV
• No. Of Pins: 12
• Output Current: 100mA
• Operating Temperature Range: -40°C To +125°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum I
(Notes 6, 9)
I
Current Monitor Ratio (Notes 6, 10)
Ratio = I
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 adjustable version 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
adjustable version is tested and specifi ed for these conditions with an
external resistor divider (60k bottom, 440k top) which sets V
The external resistor divider adds 10μA of DC load on the output. This
external current is not factored into GND pin current.
Note 7: GND pin current is tested with V
a current source load. GND pin current increases in dropout. For the
fi xed output voltage versions, an internal resistor divider adds about
temperature range, otherwise specifi cations are at T
MIN
Threshold Accuracy (Notes 6, 9)
OUT
MIN
J
/I
~ T
MON
Threshold Accuracy
A
. The LT3050E is 100% production tested at T
IN
- V
DROPOUT
IN
). For some output voltages,
= V
OUT(NOMINAL)
CONDITIONS
LT3050-3.3: 3.9V < V
LT3050, LT3050-5: 5.6V < V
LT3050-3.3: 3.9V < V
LT3050, LT3050-5: 5.6V < V
I
LOAD
LT3050-3.3: V
LT3050, LT3050-5: V
= 5mA, 25mA, 50mA, 75mA, 100mA
+ 0.6V and
OUT
A
A
= 25°C. (Note 2)
= 25°C.
to 5V.
IMON
The
IN
IN
= V
< 13.3V, R
< 13.3V, R
IMON
l
OUT
denotes the specifi cations which apply over the full operating
IN
IN
, 3.9V < V
= V
< 15V, R
< 15V, R
10μA to GND pin current. See the 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.
Note 16: The ADJ pin cannot be externally driven for fi xed output voltage
options. LTC allows the use of a small feedforward capacitor from OUT
to ADJ to reduce noise and improve transient response. See the Bypass
Capacitance section of the Applications Information.
OUT
MAX
MIN
IMIN
IMIN
, 5.6V < V
threshold defi ned by an external resistor from the I
pin resistor value, please see the Operation section. If a programmed
= 110K
= 11.3K
IMIN
IMIN
IN
< 13.3V
MAX
= 110K
= 11.3K
MON
IN
MIN
IN
pin to GND. For detailed information on how to set the
= V
< 15V
fault condition asserts if the output current falls below the
pin must be tied to GND.
OUT(NOMINAL)
MIN
MIN
l
l
l
l
l
l
fault condition is not needed, the I
settings below the Minimum I
MAX
+1V or V
MIN
0.92
pin must be tied to GND and internal
0.9
9.2
95
95
9
LT3050 Series
IN
MIN
= 2.2V, whichever is greater.
1.03
10.3
TYP
100
100
pin resistor value, please
10
1
MIN
IMON
MAX
1.13
11.3
105
105
1.1
11
pin to GND.
MIN
≠ V
MIN
Accuracy
OUT
UNITS
pin
. For
MON
3050fa
5
mA
mA
mA
mA