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LT1303 数据表(PDF) 2 Page - Linear Technology

部件名 LT1303
功能描述  Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable and Fixed 5V
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1303 数据表(HTML) 2 Page - Linear Technology

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LT1303/LT1303-5
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
VSHDN = 0.5V, VSEL = 5V, VSENSE = 5.5V
q
120
200
µA
VSHDN = 1.8V
q
715
µA
VIN
Input Voltage Range
1.8
1.55
V
q
2.0
V
Feedback Voltage
LT1303
q
1.22
1.24
1.26
V
Output Sense Voltage
LT1303-5
q
4.8
5.0
5.2
V
Comparator Hysteresis
LT1303 (Note 1)
q
6
12.5
mV
Output Hysteresis
LT1303-5 (Note 1)
q
22
50
mV
Feedback Pin Bias Current
LT1303, VFB = 1V
q
720
nA
Oscillator Frequency
Current Limit Not Asserted
120
155
185
kHz
Oscillator TC
0.2
%/
°C
DC
Maximum Duty Cycle
q
75
86
95
%
tON
Switch On Time
Current Limit Not Asserted
5.6
µs
Output Line Regulation
1.8V < VIN < 6V
q
0.06
0.15
%/V
VCESAT
Switch Saturation Voltage
ISW = 700mA
q
130
200
mV
Switch Leakage Current
VSW = 5V, Switch Off
q
0.1
10
µA
Peak Switch Current
VIN = 2V
q
0.75
1.0
1.25
A
VIN = 5V
0.65
0.9
1.15
A
LBI Trip Voltage
q
1.21
1.24
1.27
V
LBI Input Bias Current
VLBI = 1V
q
720
nA
LBO Output Low
ILOAD = 100µA
q
0.11
0.4
V
LBO Leakage Current
VLBI = 1.3V, VLBO = 5V
q
0.1
5
µA
VSHDNH
Shutdown Pin High
q
1.8
V
VSHDNL
Shutdown Pin Low
0.5
V
ISHDN
Shutdown Pin Bias Current
VSHDN = 5V
q
8.0
20
µA
VSHDN = 2V
q
3.0
µA
VSHDN = 0V
q
0.1
1
µA
ABSOLUTE MAXIMUM RATINGS
VIN Voltage .............................................................. 10V
SW1 Voltage ............................................................ 25V
Sense Voltage (LT1303-5) ....................................... 20V
FB Voltage (LT1303) ................................................ 10V
Shutdown Voltage ................................................... 10V
LBO Voltage ............................................................. 10V
LBI Voltage .............................................................. 10V
Maximum Power Dissipation ............................. 500mW
Operating Temperature Range ..................... 0
°C to 70°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
PACKAGE/ORDER INFORMATION
TA = 25°C, VIN = 2.0V, unless otherwise noted.
ELECTRICAL C
C
HARA TERISTICS
Note 1: Hysteresis specified is DC. Output ripple may be higher if output
capacitance is insufficient or capacitor ESR is excessive.
The q denotes specifications which apply over the 0
°C to 70°C operating
temperature range.
ORDER PART
NUMBER
LT1303CN8
LT1303CS8
LT1303CN8-5
LT1303CS8-5
S8 PART MARKING
1303
13035
Consult factory for Industrial and Military grade parts.
1
2
3
4
8
7
6
5
TOP VIEW
GND
LBO
SHDN
FB (SENSE)*
PGND
SW
VIN
LBI
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
*FIXED VERSION
TJMAX = 100°C, θJA = 130°C/W (N8)
TJMAX = 100°C, θJA = 150°C/W (S8)


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