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LT3502 Datasheet(PDF) 3 Page - Linear Technology

Part # LT3502
Description  1.1MHz/2.2MHz, 500mA Step-Down Regulators in 2mm 횞 2mm DFN and MS10
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3502 Datasheet(HTML) 3 Page - Linear Technology

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LT3502/LT3502A
3
3502fc
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 LT3502EDC and LT3502AEDC are guaranteed to meet
performance specifications from 0°C to 125°C junction temperature
range. Specifications over the – 40°C to 125°C operating junction
temperature range are assured by design, characterization and correlation
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VSHDN = 5V, VBOOST = 15V.
with statistical process controls. The LT3502IDC and LT3502AIDC are
guaranteed over the – 40°C to 125°C operating junction temperature
range.
Note 3: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
Note 4: Current flows into pin.
Note 5: Current flows out of pin.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Undervoltage Lockout
2.6
2.8
3
V
Quiescent Current at Shutdown
VSHDN = 0V
0.5
2
μA
Quiescent Current
Not Switching
1.5
2
mA
Feedback Voltage
2mm × 2mm DFN
2mm × 2mm DFN
MS10
MS10
●
●
0.785
0.79
0.780
0.786
0.8
0.8
0.8
0.8
0.813
0.81
0.816
0.813
V
V
V
V
Reference Voltage Line Regulation
0.005
%/V
FB Pin Bias Current
(Note 5)
●
15
50
nA
Switching Frequency
IDA < 500mA (LT3502A)
IDA < 500mA (LT3502A)
IDA < 500mA (LT3502)
IDA < 500mA (LT3502)
●
●
1.9
1.8
0.9
0.8
2.25
2.25
1.1
1.1
2.7
2.8
1.3
1.4
MHz
MHz
MHz
MHz
Maximum Duty Cycle
100mA Load (LT3502A)
100mA Load (LT3502)
70
80
80
90
%
%
Switch VCESAT
ISW = 500mA
450
mV
Switch Current Limit
(Note 3)
0.75
0.9
1.1
A
Switch Active Current
SW = 10V (Note 4)
SW = 0V (Note 5)
95
8
130
30
μA
μA
BOOST Pin Current
ISW = 500mA
10
13
mA
Minimum BOOST Voltage Above Switch
ISW = 500mA
1.9
2.2
V
BOOST Schottky Forward Drop
IOUT = 100mA
0.8
1
V
DA Pin Current to Stop OSC
500
650
mA
SHDN Bias Current
VSHDN = 5V
VSHDN = 0V
55
80
1
μA
μA
SHDN Input Voltage High
2V
SHDN Input Voltage Low
0.3
V



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