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MP2249DQT-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
MP2249 Rev.1.0 www.MonolithicPower.com 4
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin #
TQFN10 SOIC8E
Name Description
6, 7, 8 5, 6 SW
Power Switch Output. Inductor connection to drains of the internal PFET
and NFET switches.
9 7 PG
Power-good indicator. PG is pulled low when output is outside the window
of regulation or the device enters shutdown.
10 8 EN
Regulator Enable Control Input. Drive EN above 1.8V to turn on the
MP2249. Drive EN below 0.4V to turn it off. EN is pulled to GND with a
450k internal resistor.
1 1 FB
Feedback Input. Connect FB to the center point of the external resistor
divider. The feedback threshold voltage is 0.6V.
2, 3
Exposed
Pad
2, 3
Exposed
Pad
GND
Ground. Connect Exposed Pad to ground plane for optimal thermal
performance.
4, 5 4 PVIN
Power Stage Supply Input. Bypass to GND with a 2.2F or bigger ceramic
capacitor.
MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
MP2249 Rev.1.0 www.MonolithicPower.com 5
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 5V, EN = 5V, V
O
= 1.8V, L1 = 2.2µH, and T
A
= +25°C, unless otherwise noted.
I
O
=0A
Steady State Operation
Steady State Operation
SW
2V/div
V
O
/AC
50mV/div
I
L
500mA/div
SW
2V/div
V
O
/AC
50mV/div
I
L
5A/div
I
O
=3A
PG
5V/div
V
O
1V/div
EN
5V/div
PG
5V/div
V
O
1V/div
EN
5V/div
PG
5V/div
V
O
1V/div
EN
5V/div
Start-up through EN
I
O
=0A
Shut-down through EN
I
O
=0A
Start-up through EN
I
O
=3A
Efficiency vs.
Output Current
OUTPUT CURRENT (A)
00.5 11.5 22.5 3
0
20
40
60
80
100
V
IN
=3.3V
V
IN
=2.5V
MP2249 – 6V, 3A, 1MHZ, SYNCHRONOUS STEP-DOWN CONVERTER
MP2249 Rev.1.0 www.MonolithicPower.com 6
1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
V
IN
= 5V, EN = 5V, V
O
= 1.8V, L1 = 2.2µH, and T
A
= +25°C, unless otherwise noted.
SW
2V/div
V
O
1V/div
I
L
5A/div
Short Cuit Protection
I
O
=0A to short
Load Transient
I
O
=1.5A to 3A
Short Cuit Protection
I
O
=3A to short
SW
2V/div
V
O
1V/div
I
L
5A/div
SW
5V/div
V
O
/AC
50mV/div
I
L
2A/div
Shut-down through EN
I
O
=3A
PG
5V/div
V
O
1V/div
EN
5V/div
20ms/div
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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