LT1763 Series
TYPICAL PERFORMANCE CHARACTERISTICS
U W
LT1763-5
LT1763-5
10Hz to 100kHz Output Noise
CBYP = 100pF
LT1763-5
10Hz to 100kHz Output Noise
CBYP = 1000pF
10Hz to 100kHz Output Noise
CBYP = 0
VOUT
100µV/DIV
VOUT
100µV/DIV
VOUT
100µV/DIV
1ms/DIV
1ms/DIV
COUT = 10µF
IL = 500mA
1ms/DIV
COUT = 10µF
IL = 500mA
COUT = 10µF
1763 G46
1763 G47
I
L = 500mA
1763 G44
LT1763-5
LT1763-5
Transient Response
CBYP = 0
LT1763-5
Transient Response
CBYP = 0.01µF
10Hz to 100kHz Output Noise
CBYP = 0.01µF
V
C
C
= 6V
V
C
C
= 6V
IN
IN
IN
IN
0.4
0.2
0.10
0.05
0
= 10µF
= 10µF
= 10µF
= 10µF
OUT
OUT
0
VOUT
100µV/DIV
–0.2
–0.4
–0.05
–0.10
600
400
200
0
600
400
200
0
1ms/DIV
COUT = 10µF
IL = 500mA
1763 G45
400
TIME (µs)
40
50 60 70 80 90 100
TIME (µs)
0
200
600
800
1000
0
10 20 30
1763 G48
1763 G49
U
U
U
PIN FUNCTIONS
voltage drops are caused by the resistance (RP) of PC
traces between the regulator and the load. These may be
eliminated by connecting the SENSE pin to the output at
the load as shown in Figure 1 (Kelvin Sense Connection).
OUT (Pin 1): Output. The output supplies power to the
load. A minimum output capacitor of 3.3µF is required to
prevent oscillations. Larger output capacitors will be
required for applications with large transient loads to limit
peak voltage transients. See the Applications Information
section for more information on output capacitance and
reverse output characteristics.
R
P
8
1
IN
OUT
LT1763
+
SENSE (Pin 2): Output Sense. For fixed voltage versions
of the LT1763 (LT1763-1.5/LT1763-1.8/LT1763-2.5/
LT1763-3/LT1763-3.3/LT1763-5), the SENSE pin is the
input to the error amplifier. Optimum regulation will be
obtained at the point where the SENSE pin is connected to
the OUT pin of the regulator. In critical applications, small
5
2
+
SHDN SENSE
GND
LOAD
V
IN
3
R
P
1763 F01
Figure 1. Kelvin Sense Connection
1763fa
10
Linear [ Linear ]
