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MP2249DQT-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP2249
1MHz, 6V, 3A, Low-Voltage
Synchronous Step-Down Converter
MP2249 Rev.1.0 www.MonolithicPower.com 1
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2249 is a 1MHz constant frequency,
current mode, PWM step-down converter. The
device integrates a main switch and a
synchronous rectifier for high efficiency and
eliminates the need for an external Schottky
diode. It is ideal for powering portable
equipment that runs from a single cell Lithium-
Ion (Li+) battery.
The MP2249 can supply 3A of load current from
a 2.5V to 6V input voltage. It can run at 100%
duty cycle for low dropout applications. The
MP2249 provides internal soft-start control to
reduce rush current and output discharge
function to control discharging of the output
capacitor.
The MP2249 is available in small 3mmx3mm
TQFN10 or SOIC8E package.
FEATURES
• High Efficiency: Up to 90%
• Power Save Mode at Light Load
• 1MHz Constant Switching Frequency
• Up to 4.5A PeakCurrent
• 2.5V to 6V Input Voltage Range
• Output Adjustable from 0.6V to VIN
• 100% Duty Cycle in Dropout
• Output Discharge Function
• Internal Soft-Start Control
• Power Good Indicator
• Short Circuit Protection
• Thermal Fault Protection
• Available in 3mmx3mm TQFN10 or SOIC8E
Package
APPLICATIONS
• Cellular and Smart Phones
• Microprocessors and DSP Core Supplies
• PDAs
• MP3 Players
• Digital Still and Video Cameras
• Portable Instruments
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
EN
GND
MP2249
PVIN
FB
SW
L1
2. 2
H
R1
C2
R2
ON OFF
V
IN
/ 5V
V
OUT
/ 1.8V
PG
R3
PVIN
PG
C1
10 10
C3
22
C4
MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
MP2249 Rev.1.0 www.MonolithicPower.com 2
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number Package Top Marking Free Air Temperature (T
A
)
MP2249DN SOIC8E MP2249
MP2249DQT * TQFN10 (3mm x 3mm) AAVY
-40°C to +85°C
* For Tape and Reel, add suffix -Z (e.g. MP2249DQT–Z).
For RoHS Compliant Packaging, add suffix - LF (e.g. MP2249DQT–LF–Z);
PACKAGE REFERENCE
TQFN10 (3mm x 3mm) SOIC8E
ABSOLUTE MAXIMUM RATINGS
(1)
PVIN to GND ...............................-0.3V to +6.5V
SW to GND ............................-0.3V to V
IN
+0.3V
FB, EN & PG to GND...................-0.3V to +6.5V
Junction Temperature.............................+150°C
Continuous Power Dissipation (T
A
= +25°C)
(2)
SOIC8E...................................................... 2.5W
TQFN10 (3mmx3mm) ................................ 2.5W
Lead Temperature ..................................+260°C
Storage Temperature .............. -65°C to +150°C
Recommended Operating Conditions
(3)
Supply Voltage V
IN
.............................2.5V to 6V
Output Voltage V
OUT
...........................0.6V to 6V
Operating Junct. Temp. ........... -40°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
SOIC8E .................................. 50 ...... 10... °C/W
TQFN10 (3mmx3mm)............. 50...... 12... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature. T
J
(MAX) the junction-to-
ambient thermal resistance
JA
and the ambient temperature
T
A
. The maximum allowable power dissipation at any ambient
temperature is calculated using: P
D
(MAX)=(T
J
(MAX)-T
A
)/
JA
.
Exceeding the maximum allowable power dissipation will
cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
MP2249 Rev.1.0 www.MonolithicPower.com 3
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
= V
EN
= 3.6V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Supply Current I
Q
V
EN
= V
IN
, V
FB
= 0.51V 480 600 A
Shutdown Current V
EN
= 0V, V
IN
= 6V 0.01 1 A
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
T
A
= +25°C 0.594 0.600 0.606
Regulated FB Voltage V
FB
-40°C T
A
+85°C 0.588 0.600 0.612
V
FB Input Bias Current V
FB
= 0.65V -50 0.5 +50 nA
PFET On Resistance
(5)
I
SW
= 100mA 92 m
NFET On Resistance
(5)
I
SW
= -100mA 72 m
SW Leakage Current
V
EN
= 0V,V
IN
= 6V,
V
SW
= 0V or 6V
-1 +1 A
PFET Current Limit
(5)
I
LIMIT
Duty Cycle = 100%,
Current Pulse Width
< 1ms
4.5 A
Oscillator Frequency f
SW
1 MHz
Minimum On Time
(5)
t
ON
100 ns
Thermal Shutdown Trip
Threshold
(5)
145
°C
EN Turn-on Trip Threshold -40°C T
A
+85°C 1.8 V
EN Turn-off Trip Threshold -40°C T
A
+85°C 0.4 V
EN-pull down resistor 360 450 540 k
Latch Off Under Voltage (UV)
Threshold
67% V
FB
PG Upper Trip Threshold 90% V
FB
PG Lower Trip Threshold 85% V
FB
PG Output Low Voltage I
SINK
=1mA 0.3 V
Notes:
5) 100% production test at +25°C. Typical and temperature specifications are guaranteed by design and characterization.
P1-P3P4-P6P7-P9P10-P12

MP2249DQT-LF-Z

Mfr. #:
Buy MP2249DQT-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 1MHz 6V 3A Low-V Synch Step-Down
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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