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MP2120 Datasheet(PDF) 2 Page - Monolithic Power Systems

Part # MP2120
Description  2.5A, 5.5V Synchronous Step-Down Switching Regulator
PDF  11 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2120 Datasheet(HTML) 2 Page - Monolithic Power Systems

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MP2120 – 2.5A, 5.5V SYNCHRONOUS STEP-DOWN CONVERTER
MP2120 Rev. 0.92
www.MonolithicPower.com
2
9/7/2011
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
PACKAGE REFERENCE
TOP VIEW
FB
GND
SW
IN
BS
1
2
3
4
5
EN/SYNC
GND
SW
IN
POK
10
9
8
7
6
EXPOSED PAD
ON BACKSIDE
Part Number*
Package
Temperature
MP2120DQ
QFN10
(3mm x 3mm)
-40
C to +85C
* For Tape & Reel, add suffix –Z (e.g. MP2120DQ–Z)
For RoHS Compliant Packaging, add suffix –LF
(e.g. MP2120DQ–LF–Z)
ABSOLUTE MAXIMUM RATINGS (1)
IN to GND ...........-0.3V to +6.0V (+6.6V for 2ns)
SW to GND........................... -0.3V to VIN + 0.3V
SW to GND..........–2.5V to VIN + 2.5V for <50nS
FB, EN/SYNC, POK to GND...........-0.3V to +6.5V
BS to SW .....................................-0.3V to +6.5V
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ...............-65°C to +150°C
Recommended Operating Conditions
(2)
Supply Voltage VIN.......................... 2.7V to 5.5V
Output Voltage VOUT ................. 0.8V to 0.9 x VIN
Operating Temperature ..............-40°C to +85°C
Thermal Resistance
(3)
θJA
θJC
QFN10 (3mm x 3mm)............. 50 ...... 12...
C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS (4)
VIN = VEN = 3.6V, TA = +25C, unless otherwise noted.
Parameters
Condition
Min
Typ
Max
Units
Supply Current
VEN = VIN
VFB = 0.85V
750
μA
Shutdown Current
VEN = 0V, VIN = 5.5V
1
μA
IN Undervoltage Lockout
Threshold
Rising Edge
2.59
2.69
V
IN Undervoltage Lockout
Hysteresis
210
mV
Regulated FB Voltage
TA = +25°C
0.776
0.800
0.824
V
FB Input Current
VFB = 0.85V
±50
nA
EN High Threshold
–40°C ≤ TA ≤ +85°C
1.6
V
EN Low Threshold
–40°C ≤ TA ≤ +85°C
0.4
V
Internal Soft-Start Time
120
µs
High-Side Switch On-Resistance ISW = 300mA
80
mΩ
Low-Side Switch On-Resistance
ISW = –300mA
60
mΩ
SW Leakage Current
VEN = 0V; VIN = 5.5V
VSW = 0V or 5.5V
-10
10
μA
BS Under Voltage Lockout
Threshold
1.8
V



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