LT1117-3.3_15 Datasheet, PDF (4/16 Pages) Linear Technology – 800mA Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 5V

LT1117/LT1117-2.85
LT1117-3.3/LT1117-5
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_J = 25°C.
PARAMETER
Quiescent Current
Thermal Regulation
Ripple Rejection
Adjust Pin Current
LT1117-2.85
LT1117-3.3
LT1117-5
CONDITIONS
V_IN ≤ 10V
V_IN ≤ 15V
V_IN ≤ 15V
T_A = 25°C, 30ms Pulse
f_RIPPLE = 120Hz, (V_IN – V_OUT) = 3V, V_RIPPLE = 1V_P-P
MIN TYP MAX UNITS
l
5
10
mA
l
5
10
mA
l
5
10
mA
0.01
0.1
%/W
l 60
75
dB
l
55
120
μA
Adjust Pin Current Change
Temperature Stability
Long Term Stability
RMS Output Noise
Thermal Resistance
10mA ≤ I_OUT ≤ 800mA, 1.4V ≤ (V_IN – V_OUT) ≤ 10V
l
T_A = 125°C, 1000Hrs
(% of V_OUT), 10Hz ≤ f ≤ 10kHz
(Junction-to-Case, at Tab)
0.2
5
μA
0.5
%
0.3
%
0.003
%
15
°C/W
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: See thermal regulation specification for changes in output voltage
due to heating effects. Load regulation and line regulation are measured at
a constant junction temperature by low duty cycle pulse testing.
Note 3: Dropout voltage is specified over the full output current range
of the device. Dropout voltage is defined as the minimum input/output
differential measured at the specified output current. Test points and limits
are also shown on the Dropout Voltage curve.
Note 4: Minimum load current is defined as the minimum output current
required to maintain regulation.
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Operating Current
(Adjustable Device)
4
3
T_J = 125°C
T_J = 25°C
2
T_J = –55°C
1
0
0
5
10
15
20
INPUT/OUTPUT DIFFERENTIAL (V)
1117 G01
Short-Circuit Current
1.25
T_J = 125°C
1.00
T_J = 25°C
0.75
0.50
0.25
0
0
5
10
15
INPUT/OUTPUT DIFFERENTIAL (V)
1117 G02
Load Regulation
0.10
ΔI_LOAD = 800mA
0.05
0
–0.05
–0.10
–0.15
–0.20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1117 G03
1117fd
4