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MPQ2249DN Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MPQ2249DN
Description  Industrial Grade 6V, 3A, 1MHz, Low-Voltage Synchronous Step-Down Converter
PDF  14 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MPQ2249DN Datasheet(HTML) 3 Page - Monolithic Power Systems

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MPQ2249 – INDUSTRIAL GRADE, 6V, 3A, 1MHZ, LOW-VOLTAGE SYNCHRONOUS STEP-DOWN CONVERTER
MPQ2249 Rev.1.01
www.MonolithicPower.com
3
6/11/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = VEN = 3.6V, TJ = -40°C to +125°C, typical values are at TJ=+25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Supply Current
IQ
VEN = VIN, VFB = 0.51V
600
750
μA
Shutdown Current
VEN = 0V, TJ = 25°C
0.01
1
μA
VEN = 0V
0.01
10
μA
IN
Under
Voltage
Lockout
(UVLO) Threshold
Rising Edge
2.15
2.3
2.45
V
IN
Under
Voltage
Lockout
Hysteresis
210
mV
Soft-Start Time
1
ms
Discharge
MOSFET
On
Resistance
100
Ω
Regulated FB Voltage
VFB
TA = +25°C
0.594
0.600
0.606
V
-40°C ≤ TA ≤ +125°C
0.588
0.600
0.612
FB Input Bias Current
VFB = 0.65V
-50
0.5
+50
nA
PFET On Resistance
ISW = 100mA
92
mΩ
NFET On Resistance
ISW = -100mA
72
mΩ
SW Leakage Current
(5)
VEN = 0V,VIN = 6V,
VSW = 0V or 6V
-1
+1
μA
PFET Current Limit
ILIMIT
Duty Cycle = 100%,
Current Pulse Width
< 1ms
4.5
A
Oscillator Frequency
fSW
1
MHz
Minimum On Time
(5)
tON
100
ns
Thermal
Shutdown
Trip
Threshold
(5)
145
°C
EN Turn-on Trip Threshold
-40°C ≤ TA ≤ +125°C
1.8
V
EN Turn-off Trip Threshold
-40°C ≤ TA ≤ +125°C
0.4
V
EN-pull down resistor
25°C
340
400
540
kΩ
-40°C = TA = +125°C
300
620
Latch Off Under Voltage (UV)
Threshold
(5)
67%
VFB
PG Upper Trip Threshold
90%
VFB
PG Lower Trip Threshold
85%
VFB
PG Output Low Voltage
ISINK=1mA
0.3
V
Notes:
5) Guarantee by design, no production test.



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