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LT1676 Datasheet(PDF) 4 Page - Linear Technology

Part # LT1676
Description  250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1676 Datasheet(HTML) 4 Page - Linear Technology

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LT3013
4
3013fe
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Dropout Voltage
VIN = VOUT(NOMINAL) (Notes 4, 5)
ILOAD = 10mA
ILOAD = 10mA
l
160
230
320
mV
mV
ILOAD = 50mA
ILOAD = 50mA
l
250
340
450
mV
mV
ILOAD = 200mA
ILOAD = 200mA
l
360
490
630
mV
mV
GND Pin Current
VIN = 4.75V
(Notes 4, 6)
ILOAD = 0mA
ILOAD = 100mA
ILOAD = 200mA
l
l
65
3
7
130
18
μA
mA
mA
Output Voltage Noise
COUT = 10μF, ILOAD = 200mA, BW = 10Hz to 100kHz
100
μVRMS
ADJ Pin Bias Current
(Note 7)
30
100
nA
Shutdown Threshold
VOUT = Off to On
VOUT = On to Off
l
l
0.3
1.3
0.8
2V
V
SHDN Pin Current (Note 8)
VSHDN = 0V
VSHDN = 6V
0.3
0.1
2
1
μA
μA
Quiescent Current in Shutdown
VIN = 6V, VSHDN = 0V
1
5
μA
PWRGD Trip Point
% of Nominal Output Voltage, Output Rising
l
85
90
95
%
PWRGD Trip Point Hysteresis
% of Nominal Output Voltage
1.1
%
PWRGD Output Low Voltage
IPWRGD = 50μA
l
140
250
mV
CT Pin Charging Current
3.0
6
μA
CT Pin Voltage Differential
VCT(PWRGD High) – VCT(PWRGD Low)
1.6
V
Ripple Rejection
VIN = 7V(Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 200mA
65
75
dB
Current Limit
VIN = 7V, VOUT = 0V
VIN = 4.75V, ΔVOUT = –0.1V (Note 2)
l
200
400
mA
mA
Reverse Output Current (Note 9)
VOUT = 1.24V, VIN < 1.24V (Note 2)
12
25
μA
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.
Note 2: The LT3013 is tested and specified for these conditions with the
ADJ pin connected to the OUT pin.
Note 3: Operating conditions are limited by maximum junction
temperature. The regulated output voltage specification will not apply
for all possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current, the input voltage
range must be limited.
Note 4: To satisfy requirements for minimum input voltage, the LT3013 is
tested and specified for these conditions with an external resistor divider
(249k bottom, 649k top) for an output voltage of 4.5V. The external
resistor divider will add a 5μA DC load on the output.
Note 5: Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage will be equal to (VIN – VDROPOUT).
Note 6: GND pin current is tested with VIN = 4.75V and a current source
load. This means the device is tested while operating close to its dropout
region. This is the worst-case GND pin current. The GND pin current will
decrease slightly at higher input voltages.
Note 7: ADJ pin bias current flows into the ADJ pin.
Note 8:
SHDN pin current flows out of the SHDN pin.
Note 9: Reverse output current is tested with the IN pin grounded and the
OUT pin forced to the rated output voltage. This current flows into the OUT
pin and out the GND pin.
Note 10: The LT3013E is guaranteed to meet performance specifications
from 0°C to 125°C operating junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LT3013H is tested to the LT3013H Electrical Characteristics table at
140°C operating junction temperature. High junction temperatures degrade
operating lifetimes. Operating lifetime is derated at junction temperatures
greater than 125°C. The LT3013MP is 100% tested and guaranteed over
the –55°C to 125°C operating junction temperature range.
Note 11: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C (LT3013E, LT3013MP) or 140°C (LT3013H)
when overtemperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
reliability.
ELECTRICAL CHARACTERISTICS
The
l denotes the specifications which apply over the –40°C to 140°C operating temperature range, otherwise specifications are at TJ = 25°C.
(LT3013H)


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