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LMR14206XMK データシート(PDF) 4 Page - Texas Instruments

部品番号 LMR14206XMK
部品情報  LMR14206 SIMPLE SWITCHER 42Vin, 0.6A Step-Down Voltage Regulator in SOT-23
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
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LMR14206XMK データシート(HTML) 4 Page - Texas Instruments

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LMR14206
SNVS733D – OCTOBER 2011 – REVISED APRIL 2013
www.ti.com
Electrical Characteristics
Specifications in standard type face are for TJ = 25°C and those with boldface type apply over the full Operating
Temperature Range ( TJ = −40°C to +125°C). Minimum and Maximum limits are ensured 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. Unless otherwise stated the following conditions apply: VIN = 12V.
Symbol
Parameter
Conditions
Min(1)
Typ(2)
Max(1)
Units
IQ
Quiescent current
SHDN = 0V
16
40
µA
Device On, Not Switching
1.30
1.75
mA
Device On, No Load
1.35
1.85
RDSON
Switch ON resistance
See (3)
0.9
1.6
ILSW
Switch leakage current
VIN = 42V
0.0
0.5
µA
ICL
Switch current limit
See (4)
1.15
A
IFB
Feedback pin bias current
See (5)
0.1
1.0
µA
VFB
FB Pin reference voltage
0.747
0.765
0.782
V
tMIN
Minimum ON time
100
ns
fSW
VFB = 0.5V
0.95
1.25
1.50
Switching frequency
MHz
VFB = 0V
0.35
DMAX
Maximum duty cycle
81
87
%
VUVP
Undervoltage lockout
On threshold
4.4
3.7
V
thresholds
Off threshold
3.5
3.25
VSHDN
Shutdown threshold
Device on
2.3
1.0
V
Device off
0.9
0.3
ISHDN
Shutdown pin input bias current VSHDN = 2.3V
(5)
0.05
1.5
µA
VSHDN = 0V
0.02
1.5
THERMAL SPECIFICATIONS
RθJA
Junction-to-Ambient Thermal
See (6)
121
°C/W
Resistance, SOT Package
(1)
All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are
100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC)
methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely norm.
(3)
Includes the bond wires, RDSON from VIN pin to SW pin.
(4)
Current limit at 0% duty cycle.
(5)
Bias currents flow into pin.
(6)
All numbers apply for packages soldered directly onto a 3" x 3" PC board with 2 oz. copper on 4 layers in still air in accordance to
JEDEC standards. Thermal resistance varies greatly with layout, copper thickness, number of layers in PCB, power distribution, number
of thermal vias, board size, ambient temperature, and air flow.
4
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