lt1763cs8-trpbf Linear Technology Corporation, lt1763cs8-trpbf Datasheet - Page 4

• Manufacturer Part Number: lt1763cs8-trpbf
• Description: 500ma, Low Noise, Ldo Micropower Regulators
• Manufacturer: Linear Technology Corporation

LT1763 Series
PARAMETER
GND Pin Current
V
(Notes 5, 7)
Output Voltage Noise
ADJ Pin Bias Current
Shutdown Threshold
SHDN Pin Current
(Note 9)
Quiescent Current in Shutdown
Ripple Rejection
Current Limit
Input Reverse Leakage Current
Reverse Output Current
(Note 10)
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 LT1763 regulators are tested and specified under pulse load
conditions such that T
T
characterization and correlation with statistical process controls. The
LT1763 (MP grade) is 100% tested and guaranteed over the –55°C to
125°C temperature range.
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.
ELECTRICAL CHARACTERISTICS
The
4
A
IN
= 25°C; performance at – 40°C and 125°C is assured by design,
= V
●
OUT(NOMINAL)
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
J
≈ T
A
. The LT1763 (C grade) is 100% tested at
CONDITIONS
I
I
I
I
I
I
C
(Notes 3, 8)
V
V
V
V
V
V
I
V
C Grade: V
MP Grade: V
V
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5
LT1763 (Note 3)
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
OUT
OUT
OUT
SHDN
SHDN
IN
IN
IN
IN
= 6V, V
– V
= 7V, V
= – 20V, V
= 10µF, C
= Off to On
= On to Off
= 0mA
= 1mA
= 50mA
= 100mA
= 250mA
= 500mA
= 500mA
= 0V
= 20V
OUT
IN
SHDN
OUT
= 1.5V (Avg), V
IN
= V
OUT
BYP
= 2.35V (Note 12), ∆V
= 0V
OUT(NOMINAL)
= 0V
= 0V
= 0.01µF, I
V
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
= 1.5V, V
= 1.8V, V
= 2.5V, V
= 3V, V
= 3.3V, V
= 5V, V
= 1.22V, V
RIPPLE
LOAD
+ 1V or 2.3V (Note 12), ∆V
IN
IN
= 0.5V
IN
IN
IN
IN
< 3V
< 5V
= 500mA, BW = 10Hz to 100kHz
IN
< 1.5V
< 1.8V
< 2.5V
< 3.3V
OUT
< 1.22V
P-P
= – 0.1V
, f
Note 6: 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
Note 7: GND pin current is tested with V
(C grade) or 2.35V (MP grade), whichever is greater, and a current source
load. This means the device is tested while operating in its dropout region.
This is the worst-case GND pin current. The GND pin current will decrease
slightly at higher input voltages.
Note 8: ADJ pin bias current flows into the ADJ pin.
Note 9: SHDN pin current flows into the SHDN pin.
Note 10: 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 11: For the LT1763, LT1763-1.5 and LT1763-1.8 dropout voltage will
be limited by the minimum input voltage specification under some output
voltage/load conditions. See the curve of Minimum Input Voltage in the
Typical Performance Characteristics.
Note 12: To satisfy requirements for minimum input voltage, current limit
is tested at V
whichever is greater.
RIPPLE
= 120Hz,
OUT
IN
= V
= – 0.1V
OUT(NOMINAL)
●
●
●
●
●
●
●
●
●
●
●
+ 1V or 2.3V (C grade) or 2.35V (MP grade),
IN
– V
MIN
0.25
520
520
50
DROPOUT
IN
= V
0.65
OUT(NOMINAL)
TYP
1.1
0.8
0.1
0.1
.
30
65
11
20
30
65
10
10
10
10
10
10
2
5
1
5
A
= 25°C. (Note 2)
MAX
120
100
1.6
75
16
20
20
20
20
20
20
10
3
8
2
1
1
or V
IN
= 2.3V
µV
UNITS
1763fc
RMS
mA
mA
mA
mA
mA
mA
mA
µA
µA
nA
µA
µA
µA
dB
µA
µA
µA
µA
µA
µA
µA
V
V