LT1763(1999) Ver la hoja de datos (PDF) - Linear Technology
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LT1763 Datasheet PDF : 16 Pages
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LT1763 Series
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Load Regulation
Dropout Voltage
VIN = VOUT(NOMINAL)
(Notes 5, 6, 11)
GND Pin Current
VIN = VOUT(NOMINAL)
(Notes 5, 7)
Output Voltage Noise
ADJ Pin Bias Current
LT1763-3
VIN = 4V, ∆ILOAD = 1mA to 500mA
VIN = 4V, ∆ILOAD = 1mA to 500mA
q
LT1763-3.3
VIN = 4.3V, ∆ILOAD = 1mA to 500mA
VIN = 4.3V, ∆ILOAD = 1mA to 500mA
q
LT1763-5
VIN = 6V, ∆ILOAD = 1mA to 500mA
VIN = 6V, ∆ILOAD = 1mA to 500mA
q
LT1763 (Note 3) VIN = 2.3V, ∆ILOAD = 1mA to 500mA
VIN = 2.3V, ∆ILOAD = 1mA to 500mA
q
ILOAD = 10mA
ILOAD = 10mA
q
ILOAD = 50mA
ILOAD = 50mA
q
ILOAD = 100mA
ILOAD = 100mA
q
ILOAD = 500mA
ILOAD = 500mA
q
ILOAD = 0mA
q
ILOAD = 1mA
q
ILOAD = 50mA
q
ILOAD = 100mA
q
ILOAD = 250mA
q
ILOAD = 500mA
q
COUT = 10µF, CBYP = 0.01µF, ILOAD = 500mA, BW = 10Hz to 100kHz
(Notes 3, 8)
7
15
30
7
17
33
12
25
50
2
6
12
0.13 0.19
0.25
0.17 0.22
0.32
0.20 0.24
0.34
0.30 0.35
0.45
30
75
65
120
1.1
1.6
2
3
5
8
11
16
20
30
100
Shutdown Threshold
SHDN Pin Current
(Note 9)
Quiescent Current in Shutdown
Ripple Rejection
Current Limit
Input Reverse Leakage Current
Reverse Output Current
(Note 10)
VOUT = Off to On
VOUT = On to Off
VSHDN = 0V
VSHDN = 20V
VIN = 6V, VSHDN = 0V
VIN – VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,
ILOAD = 500mA
VIN = 7V, VOUT = 0V
VIN = VOUT(NOMINAL) + 1V, ∆VOUT = – 0.1V
VIN = – 20V, VOUT = 0V
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5
LT1763 (Note 3)
VOUT = 1.5V, VIN < 1.5V
VOUT = 1.8V, VIN < 1.8V
VOUT = 2.5V, VIN < 2.5V
VOUT = 3V, VIN < 3V
VOUT = 3.3V, VIN < 3.3V
VOUT = 5V, VIN < 5V
VOUT = 1.22V, VIN < 1.22V
q
0.8
2
q 0.25 0.65
0.1
1
0.1
1
50
65
700
q 520
q
1
10
20
10
20
10
20
10
20
10
20
10
20
5
10
mV
mV
mV
mV
mV
mV
mV
mV
V
V
V
V
V
V
V
V
µA
µA
mA
mA
mA
mA
µVRMS
nA
V
V
µA
µA
µA
dB
mA
mA
mA
µA
µA
µA
µA
µA
µA
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1763 regulators are tested and specified under pulse load
conditions such that TJ ≈ TA. The LT1763 is 100% tested at TA = 25°C.
Performance at – 40°C and 125°C is assured by design, characterization
and correlation with statistical process controls.
Note 3: The LT1763 (adjustable version) is tested and specified for these
conditions with the ADJ pin connected to the OUT pin.
Note 4: 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 5: To satisfy requirements for minimum input voltage, the LT1763
(adjustable version) is tested and specified for these conditions with an
external resistor divider (two 250k resistors) for an output voltage of
2.44V. The external resistor divider will add a 5µA DC load on the output.
1763fa
3
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