*PIN 2: SENSE FOR LT1763-1.5/LT1763-1.8/LT1763-2.5/LT1763-3/LT1763-3.3/LT1763-5
ADJ FOR LT1763
SEE THE APPLICATIONS INFORMATION SECTION.
OUT 1
SENSE/ADJ* 2
GND 3
BYP 4
TOP VIEW
8
7
6
5
IN
GND
GND
SHDN
DE PACKAGE
12-LEAD (4mm 3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 40°C/W,
θ
JC
= 5°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
*PIN 5: SENSE FOR LT1763-1.5/LT1763-1.8/LT1763-2.5/LT1763-3/LT1763-3.3/LT1763-5
ADJ FOR LT1763
SEE THE APPLICATIONS INFORMATION SECTION.
ORDER INFORMATION
LEAD FREE FINISH
LT1763CDE#PBF
LT1763CDE-1.5#PBF
LT1763CDE-1.8#PBF
LT1763CDE-2.5#PBF
LT1763CDE-3#PBF
LT1763CDE-3.3#PBF
LT1763CDE-5#PBF
LT1763CS8#PBF
LT1763IS8#PBF
LT1763MPS8#PBF
TAPE AND REEL
LT1763CDE#TRPBF
LT1763CDE-1.5#TRPBF
LT1763CDE-1.8#TRPBF
LT1763CDE-2.5#TRPBF
LT1763CDE-3#TRPBF
LT1763CDE-3.3#TRPBF
LT1763CDE-5#TRPBF
LT1763CS8#TRPBF
LT1763IS8#TRPBF
LT1763MPS8#TRPBF
PART MARKING*
1763
76315
76318
76325
17633
76333
17635
1763
1763
1763MP
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
1763fe
2
LT1763 Series
ORDER INFORMATION
LEAD FREE FINISH
LT1763CS8-1.5#PBF
LT1763IS8-1.5#PBF
LT1763CS8-1.8#PBF
LT1763IS8-1.8#PBF
LT1763CS8-2.5#PBF
LT1763IS8-2.5#PBF
LT1763CS8-3#PBF
LT1763IS8-3#PBF
LT1763CS8-3.3#PBF
LT1763IS8-3.3#PBF
LT1763CS8-5#PBF
LT1763IS8-5#PBF
LEAD BASED FINISH
LT1763CDE
LT1763CDE-1.5
LT1763CDE-1.8
LT1763CDE-2.5
LT1763CDE-3
LT1763CDE-3.3
LT1763CDE-5
LT1763CS8
LT1763IS8
LT1763MPS8
LT1763CS8-1.5
LT1763IS8-1.5
LT1763CS8-1.8
LT1763IS8-1.8
LT1763CS8-2.5
LT1763IS8-2.5
LT1763CS8-3
LT1763IS8-3
LT1763CS8-3.3
LT1763IS8-3.3
LT1763CS8-5
LT1763IS8-5
TAPE AND REEL
LT1763CS8-1.5#TRPBF
LT1763IS8-1.5#TRPBF
LT1763CS8-1.8#TRPBF
LT1763IS8-1.8#TRPBF
LT1763CS8-2.5#TRPBF
LT1763IS8-2.5#TRPBF
LT1763CS8-3#TRPBF
LT1763IS8-3#TRPBF
LT1763CS8-3.3#TRPBF
LT1763IS8-3.3#TRPBF
LT1763CS8-5#TRPBF
LT1763IS8-5#TRPBF
TAPE AND REEL
LT1763CDE#TR
LT1763CDE-1.5#TR
LT1763CDE-1.8#TR
LT1763CDE-2.5#TR
LT1763CDE-3#TR
LT1763CDE-3.3#TR
LT1763CDE-5#TR
LT1763CS8#TR
LT1763IS8#TR
LT1763MPS8#TR
LT1763CS8-1.5#TR
LT1763IS8-1.5#TR
LT1763CS8-1.8#TR
LT1763IS8-1.8#TR
LT1763CS8-2.5#TR
LT1763IS8-2.5#TR
LT1763CS8-3#TR
LT1763IS8-3#TR
LT1763CS8-3.3#TR
LT1763IS8-3.3#TR
LT1763CS8-5#TR
LT1763IS8-5#TR
PART MARKING*
176315
176315
176318
176318
176325
176325
17633
17633
176333
176333
17635
17635
PART MARKING*
1763
76315
76318
76325
17633
76333
17635
1763
1763
1763MP
176315
176315
176318
176318
176325
176325
17633
17633
176333
176333
17635
17635
PACKAGE DESCRIPTION
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
1763fe
3
LT1763 Series
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Operating Voltage
Regulated Output Voltage
(Note 4)
CONDITIONS
C, I Grade: I
LOAD
= 500mA (Notes 3, 11)
MP Grade: I
LOAD
= 500mA (Notes 3, 11)
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5
ADJ Pin Voltage
(Notes 3, 4)
Line Regulation
LT1763
V
IN
= 2V, I
LOAD
= 1mA
2.5V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
V
IN
= 2.3V, I
LOAD
= 1mA
2.8V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
V
IN
= 3V, I
LOAD
= 1mA
3.5V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
V
IN
= 3.5V, I
LOAD
= 1mA
4V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
V
IN
= 3.8V, I
LOAD
= 1mA
4.3V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
V
IN
= 5.5V, I
LOAD
= 1mA
6V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
V
IN
= 2.2V, I
LOAD
= 1mA
C, I Grade: 2.3V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
MP Grade: 2.35V < V
IN
< 20V, 1mA < I
LOAD
< 500mA
ΔV
IN
= 2V to 20V, I
LOAD
= 1mA
ΔV
IN
= 2.3V to 20V, I
LOAD
= 1mA
ΔV
IN
= 3V to 20V, I
LOAD
= 1mA
ΔV
IN
= 3.5V to 20V, I
LOAD
= 1mA
ΔV
IN
= 3.8V to 20V, I
LOAD
= 1mA
ΔV
IN
= 5.5V to 20V, I
LOAD
= 1mA
C, I Grade: ΔV
IN
= 2V to 20V, I
LOAD
= 1mA
MP Grade: ΔV
IN
= 2.1V to 20V, I
LOAD
= 1mA
V
IN
= 2.5V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 2.5V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 2.8V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 2.8V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 3.5V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 3.5V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 4V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 4V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 4.3V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 4.3V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 6V, ΔI
LOAD
= 1mA to 500mA
V
IN
= 6V, ΔI
LOAD
= 1mA to 500mA
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
MIN
TYP
1.8
1.8
1.485
1.462
1.782
1.755
2.475
2.435
2.970
2.925
3.267
3.220
4.950
4.875
1.208
1.190
1.190
1.5
1.5
1.8
1.8
2.5
2.5
3
3
3.3
3.3
5
5
1.220
1.220
1.220
1
1
1
1
1
1
1
1
3
4
5
7
7
12
2
MAX
2.3
2.35
1.515
1.538
1.818
1.845
2.525
2.565
3.030
3.075
3.333
3.380
5.050
5.125
1.232
1.250
1.250
5
5
5
5
5
5
5
5
8
15
9
18
12
25
15
30
17
33
25
50
6
12
12
0.19
0.25
0.22
0.32
0.24
0.34
0.35
0.45
UNITS
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
V
V
V
V
V
V
V
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5
LT1763 (Note 3)
LT1763 (Note 3)
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5
Load Regulation
LT1763 (Note 3) V
IN
= 2.3V, ΔI
LOAD
= 1mA to 500mA
C, I Grade: V
IN
= 2.3V, ΔI
LOAD
= 1mA to 500mA
MP Grade: V
IN
= 2.35V, ΔI
LOAD
= 1mA to 500mA
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 5, 6, 11)
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 500mA
0.13
0.17
0.20
0.30
1763fe
4
LT1763 Series
ELECTRICAL CHARACTERISTICS
PARAMETER
GND Pin Current
V
IN
= V
OUT(NOMINAL)
(Notes 5, 7)
CONDITIONS
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 250mA
I
LOAD
= 500mA
C
OUT
= 10μF, C
BYP
= 0.01μF, I
LOAD
= 500mA, BW = 10Hz to 100kHz
(Notes 3, 8)
V
OUT
= Off to On
V
OUT
= On to Off
V
SHDN
= 0V
V
SHDN
= 20V
V
IN
= 6V, V
SHDN
= 0V
V
IN
– V
OUT
= 1.5V (Avg), V
RIPPLE
= 0.5V
P-P
, f
RIPPLE
= 120Hz,
I
LOAD
= 500mA
V
IN
= 7V, V
OUT
= 0V
C, I Grade: V
IN
= V
OUT(NOMINAL)
+ 1V or 2.3V (Note 12), ΔV
OUT
= –0.1V
MP Grade: V
IN
= 2.35V (Note 12), ΔV
OUT
= –0.1V
V
IN
= –20V, V
OUT
= 0V
LT1763-1.5
LT1763-1.8
LT1763-2.5
LT1763-3
LT1763-3.3
LT1763-5
LT1763 (Note 3)
V
OUT
= 1.5V, V
IN
< 1.5V
V
OUT
= 1.8V, V
IN
< 1.8V
V
OUT
= 2.5V, V
IN
< 2.5V
V
OUT
= 3V, V
IN
< 3V
V
OUT
= 3.3V, V
IN
< 3.3V
V
OUT
= 5V, V
IN
< 5V
V
OUT
= 1.22V, V
IN
< 1.22V
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
MIN
TYP
30
65
1.1
2
5
11
20
30
0.25
0.8
0.65
0.1
1
0.1
50
65
1
100
2
MAX
75
120
1.6
3
8
16
UNITS
μA
μA
mA
mA
mA
mA
μV
RMS
nA
V
V
μA
μA
μA
dB
Output Voltage Noise
ADJ Pin Bias Current
Shutdown Threshold
SHDN
Pin Current
(Note 9)
Quiescent Current in Shutdown
Ripple Rejection
Current Limit
520
520
1
10
10
10
10
10
10
5
20
20
20
20
20
20
10
mA
mA
mA
μA
μA
μA
μA
μA
μA
μA
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
J
≅
T
A
. The LT1763 (C grade) is 100% tested
at T
A
= 25°C; performance at –40°C and 125°C is assured by design,
characterization and correlation with statistical process controls. The
LT1763 (I grade) is guaranteed over the full –40°C to 125°C operating
junction temperature range. The LT1763 (MP grade) is 100% tested and
guaranteed over the –55°C to 125°C operating junction 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.
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
IN
– V
DROPOUT
.
Note 7:
GND pin current is tested with V
IN
= V
OUT(NOMINAL)
or V
IN
= 2.3V
(C, I 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
Hacker's Delight高效程序的奥秘和stanford这篇文章，用位运算不想装逼都难http://graphics.stanford.edu/~seander/bithacks.htmlBit Twiddling Hacks
By Sean Eron Andersonseander@cs.stanfo ......
综合技术交流
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
