LT3011 Datasheet, PDF (4/16 Pages) Linear Technology – 50mA, 3V to 80V Low Dropout Micropower Linear Regulator with PWRGD

LT3011
ELECTRICAL CHARACTERISTICS (LT3011H)
The l denotes the specifications which apply over the –40°C to 150°C operating temperature range, otherwise specifications are at T_J = 25°C.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Dropout Voltage
V_IN = V_OUT(NOMINAL)
(Notes 4, 5)
GND Pin Current
V_IN = V_OUT(NOMINAL)
(Notes 4, 6)
Output Voltage Noise
ADJ Pin Bias Current
I_LOAD = 1mA
I_LOAD = 1mA
l
I_LOAD = 10mA
I_LOAD = 10mA
l
I_LOAD = 50mA
I_LOAD = 50mA
l
I_LOAD = 0mA
l
I_LOAD = 1mA
l
I_LOAD = 10mA
l
I_LOAD = 50mA
l
C_OUT = 10μF, I_LOAD = 50mA, BW = 10Hz to 100kHz, V_OUT = 1.24V
(Note 7)
100
150
mV
220
mV
200
260
mV
380
mV
300
370
mV
575
mV
46
125
μA
105
225
μA
410
750
μA
1.9
3.5
mA
100
μV_RMS
30
100
nA
Shutdown Threshold
SHDN Pin Current (Note 8)
Quiescent Current in Shutdown
PWRGD Trip Point
V_OUT = Off to On
V_OUT = On to Off
V_SHDN = 0V
V_SHDN = 6V
V_IN = 6V, V_SHDN = 0V
% of Nominal Output Voltage, Output Rising
l
1.3
2
V
l 0.3
1.1
V
0.5
2
μA
0.1
0.5
μA
1
5
μA
l 85
90
95
%
PWRGD Trip Point Hysteresis
% of Nominal Output Voltage
1.1
%
PWRGD Output Low Voltage
I_PWRGD = 50μA
l
140
250
mV
C_T Pin Charging Current
l
3
6
μA
C_T Pin Voltage Differential
V_{CT(PWRGD High)} – V_{CT(PWRGD Low)}
1.67
V
Ripple Rejection
V_IN = 7V (Avg), V_RIPPLE = 0.5V_P-P, f_RIPPLE = 120Hz, I_LOAD = 50mA
65
85
dB
Current Limit
V_IN = 7V, V_OUT = 0V
V_IN = 4V, ΔV_OUT = –0.1V (Note 2)
140
mA
l 60
mA
Input Reverse Leakage Current
V_IN = –80V, V_OUT = 0V
l
6
mA
Reverse Output Current (Note 9) V_OUT = 1.24V, V_IN < 1.24V (Note 2)
8
15
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 LT3011 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 LT3011
is tested and specified for these conditions with an external resistor
divider (249k bottom, 409k top) for an output voltage of 3.3V. 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 (V_IN – V_DROPOUT).
Note 6: GND pin current is tested with V_IN = V_OUT(NOMINAL) 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 LT3011 regulators are tested and specified under pulse
load conditions such that T_J ≅ T_A. The LT3011E regulators are 100%
tested at T_A = 25°C. Performance of the LT3011E over the full –40°C
to 125°C operating junction temperature range is assured by design,
characterization and correlation with statistical process controls. The
LT3011I regulators are guaranteed over the full –40°C to 125°C operating
junction temperature range. The LT3011H is tested to the LT3011H
Electrical Characteristics table at 150°C operating junction temperature.
High junction temperatures degrade operating lifetimes. Operating lifetime
is derated at junction temperatures greater than 125°C.
Note 11: This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature will
exceed 125°C (LT3011E/LT3011I) or 150°C (LT3011H) when overtemperature
protection is active. Continuous operation above the specified maximum
operating junction temperature may impair device reliability.
3011f
4