LT1117_02 Datasheet, PDF (3/12 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 q denotes specifications which apply over the full operating temperature range, otherwise specifications are at T_J = 25°C.
PARAMETER
CONDITIONS
MIN TYP MAX
Load Regulation
Dropout Voltage
Current Limit
Minimum Load Current
Quiescent Current
Thermal Regulation
Ripple Rejection
Adjust Pin Current
LT1117
LT1117-2.85
LT1117-3.3
LT1117-5
LT1117
LT1117-2.85
LT1117-3.3
LT1117-5
(V_IN – V_OUT) = 3V, 10mA ≤ I_OUT ≤ 800mA (Note 2)
V_IN = 4.25V, 0 ≤ I_OUT ≤ 800mA (Note 2)
V_IN = 4.75V, 0 ≤ I_OUT ≤ 800mA (Note 2)
V_IN = 6.5V, 0 ≤ I_OUT ≤ 800mA (Note 2)
I_OUT = 100mA, 0°C ≤ T_J ≤ 125°C (Note 3)
I_OUT = 500mA, 0°C ≤ T_J ≤ 125°C (Note 3)
I_OUT = 800mA, 0°C ≤ T_J ≤ 125°C (Note 3)
I_OUT = 100mA, – 40°C ≤ T_J < 0°C (Note 3)
I_OUT = 500mA, – 40°C ≤ T_J < 0°C (Note 3)
I_OUT = 800mA, – 40°C ≤ T_J < 0°C (Note 3)
(V_IN – V_OUT) = 5V, T_J = 25°C,
(V_IN – V_OUT) = 15V (Note 4)
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
q
q
q
q
800
q
q
q
q
q 60
q
0.1 0.4
1 10
1 10
1 15
1.00 1.10
1.05 1.15
1.10 1.20
1.00 1.20
1.05 1.25
1.10 1.30
950 1200
1.7 5
5 10
5 10
5 10
0.01 0.1
75
55 120
Adjust Pin Current Change
Temperature Stability
10mA ≤ I_OUT ≤ 800mA, 1.4V ≤ (V_IN – V_OUT) ≤ 10V
q
0.2 5
0.5
Long Term Stability
RMS Output Noise
Thermal Resistance
T_A = 125°C, 1000Hrs
(% of V_OUT), 10Hz ≤ f ≤ 10kHz
(Junction-to-Case, at Tab)
0.3
0.003
15
UNITS
%
mV
mV
mV
V
V
V
V
V
V
mA
mA
mA
mA
mA
%/W
dB
µA
µA
%
%
%
°C/W
Note 1: Absolute Maximum Ratings are those values beyond which the life
to the device may be imparied.
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 PERFOR A CE CHARACTERISTICS
Minimum Operating Current
(Adjustable Device)
4
3
T_J = 125°C
T_J = 25°C
2
T_J = –55°C
1
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
20
INPUT/OUTPUT DIFFERENTIAL (V)
LT1117 • TPC02
0
0
5
10
15
INPUT/OUTPUT DIFFERENTIAL (V)
LT1117 • TPC03
Load Regulation
0.10
∆ I_LOAD = 800mA
0.05
0
– 0.05
– 0.10
– 0.15
– 0.20
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1117 • TPC04
3