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LMR10510 Datasheet(PDF) 4 Page - Texas Instruments

No. de pieza LMR10510
Descripción Electrónicos  SIMPLE SWITCHER짰 5.5Vin, 1A Step-Down Voltage Regulator in SOT-23 and WSON
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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LMR10510 Datasheet(HTML) 4 Page - Texas Instruments

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LMR10510
SNVS727A – OCTOBER 2011 – REVISED OCTOBER 2011
www.ti.com
Electrical Characteristics
(1) (2)
VIN = 5V unless otherwise indicated under the Conditions column. Limits in standard type are for TJ = 25°C only; limits in
boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are specified
through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are
provided for reference purposes only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VFB
Feedback Voltage
0.588
0.600
0.612
V
ΔVFB/VIN
Feedback Voltage Line Regulation
VIN = 3V to 5V
0.02
%/V
IB
Feedback Input Bias Current
0.1
100
nA
VIN Rising
2.73
2.90
V
Undervoltage Lockout
UVLO
VIN Falling
1.85
2.3
UVLO Hysteresis
0.43
V
LMR10510-X
1.2
1.6
1.95
FSW
Switching Frequency
MHz
LMR10510-Y
2.25
3.0
3.75
LMR10510-X
86
94
DMAX
Maximum Duty Cycle
%
LMR10510-Y
82
90
LMR10510-X
5
DMIN
Minimum Duty Cycle
%
LMR10510-Y
7
WSON Package
150
RDS(ON)
Switch On Resistance
m
SOT-23 Package
130
195
ICL
Switch Current Limit
VIN = 3.3V
1.2
1.75
A
Shutdown Threshold Voltage
0.4
VEN_TH
V
Enable Threshold Voltage
1.8
ISW
Switch Leakage
100
nA
IEN
Enable Pin Current
Sink/Source
100
nA
LMR10510X VFB = 0.55
3.3
5
mA
Quiescent Current (switching)
IQ
LMR10510Y VFB = 0.55
4.3
6.5
mA
Quiescent Current (shutdown)
All Options VEN = 0V
30
nA
WSON Package
80
Junction to Ambient
θJA
°C/W
0 LFPM Air Flow(3)
SOT-23 Package
118
WSON Package
18
θJC
Junction to Case
°C/W
SOT-23 Package
80
TSD
Thermal Shutdown Temperature
165
°C
(1)
Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate TI’s Average Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely parametric norm.
(3)
Applies for packages soldered directly onto a 3” x 3” PC board with 2oz. copper on 4 layers in still air.
4
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