LT1316 데이터 시트보기 (PDF) - Linear Technology
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LT1316 Datasheet PDF : 16 Pages
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LT1316
ELECTRICAL CHARACTERISTICS
Commercial grade 0°C to 70°C, Industrial grade – 40°C to 85°C, VIN = 2V, VSHDN = VIN, TA = 25°C unless otherwise noted. (Notes 1, 2)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Switch OFF Time
FB > 1V
1.4
2.0
2.6
µs
q 1.1
3.0
µs
Switch ON Time
Maximum Duty Cycle
FB < 1V
Current Limit Not Asserted
1V < FB < 1.2V
Current Limit Not Asserted
1V < FB < 1.2V
3.4
µs
4.4
6.3
8.2
µs
q 3.4
9.5
µs
74
76
90
%
q 73
90
%
Switch Saturation Voltage
Switch Leakage
ISW = 0.5A
ISW = 0.1A
Switch Off, VSW = 5V
q
0.30
0.4
V
q
0.06 0.15
V
q
0.1
5
µA
Commercial grade 0°C to 70°C, VIN = 2V, VSHDN = VIN, TA = 25°C unless otherwise noted.
FB Comparator Trip Point
q 1.21 1.23 1.25
V
Peak Switch Current
RSET = 27.4k, TA = 25°C
RSET = 27.4k, TA =0°C
RSET = 27.4k, TA = 70°C
90
100 110
mA
90
100 115
mA
70
90
110
mA
RSET = 10K
RSET = 121k
q 250
290
340
mA
25
mA
Industrial grade – 40°C to 85°C, VIN = 2V, VSHDN = VIN, TA = 25°C unless otherwise noted.
FB Comparator Trip Point
q 1.205 1.23 1.255
V
Peak Switch Current
RSET = 27.4k,
RSET = 10k
q 70
100 125
mA
q 200
290
370
mA
The q denotes specifications which apply over the specified temperature
range.
Note 1: C grade device specifications are guaranteed over the 0°C to 70°C
temperature range. In addition, C grade device specifications are assured
over the – 40°C to 85°C temperature range by design or correlation, but
are not production tested.
Note 2: I grade device specifications are guaranteed over the – 40°C to
85°C temperature range.
TYPICAL PERFORMANCE CHARACTERISTICS
Load Transient Response
VOUT
100mV/DIV
AC COUPLED
50mA
ILOAD
0mA
1316 G01
Burst ModeTM Operation
VOUT
100mV/DIV
AC COUPLED
VSW
5V/DIV
INDUCTOR
CURRENT
200mA/DIV
1316 G02
Burst Mode IS A TRADEMARK OF LINEAR TECHNOLOGY
CORPORATION.
3
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