MP2012DQ-LF-P

MP2012
Low Voltage, 2.7-6V Input,1.5A, 1.2MHz
Synchronous Step-Down Converter
MP2012 Rev. 1.01 www.MonolithicPower.com 1
9/22/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2012 is a fully integrated, internally
compensated 1.2MHz fixed frequency PWM
step-down converter. It is ideal for powering
portable equipment that runs from a single cell
Lithium-Ion (Li+) Battery, with an input range
from 2.7V to 6V. The MP2012 can provide up to
1.5A of load current with output voltage as low
as 0.8V. It can also operate at 100% duty cycle
for low dropout applications. With peak current
mode control and internal compensation, the
MP2012 is stable with ceramic capacitors and
small inductors. Fault condition protection
includes cycle-by-cycle current limiting and
thermal shutdown.
MP2012 is available in a small QFN6 (3x3mm)
package.
FEATURES
2.7-6V Input Operation Range
Output Adjustable from 0.8V to VIN
1A Max Shutdown Current.
Up to 95% Efficiency
100% Duty Cycle for Low Dropout
Applications
1.2MHz Fixed Switching Frequency
Stable with Low ESR Output Ceramic
Capacitors
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Short Circuit Protection
Available in QFN6 (3x3mm)
APPLICATIONS
DVD+/-RW Drives
Smart Phones
PDAs
Digital Cameras
Portable Instruments
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“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP2012
PVIN
VIN
GND
EN
SW
FB 1
2
3
64
5
C1
V
IN
2.7V to 6V
EN
L1
R1
R2
Rt
C2
V
OUT
1.8V/1.5A
Efficiency vs.
Load Current
LOAD CURRENT(A)
EFFICIENCY (%)
0
10
20
30
40
50
60
70
80
90
100
0 0.3 0.6 0.9 1.2 1.5
Vin=5V
Vin=3V
MP2012 – 1.5A SYNCHRONOUS STEP-DOWN CONVERTER
MP2012 Rev. 1.01 www.MonolithicPower.com 2
9/22/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking Free Air Temperature (T
A
)
MP2012DQ QFN6(3x3mm) 9E
–40°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MP2012DQ–Z).
For RoHS compliant packaging, add suffix –LF (e.g. MP2012DQ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
Exposed Pad
Connected to GND
FB
GND
SW
1
2
3
EN
VIN
PVIN
6
5
4
ABSOLUTE MAXIMUM RATINGS
(1)
PVIN, VIN to GND......................–0.3V to + 6.5V
SW to GND .......................... –0.3V to V
IN
+ 0.3V
EN, FB to GND ...........................–0.3V to +6.5V
Operating Temperature............. –40°C to +85°C
Continuous Power Dissipation (T
A
= +25°C)
(2)
………………………………………………....2.5W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ............. –65°C to +150°C
Recommended Operating Conditions
(3)
Supply Voltage V
IN
.............................2.7V to 6V
Operating Junct. Temp (T
J
)..... –40°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
QFN6 (3x3mm) .......................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 continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX) = (T
J
(MAX)-T
A
)/
JA
. Exceeding the maximum allowable powe
r
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.
MP2012 – 1.5A SYNCHRONOUS STEP-DOWN CONVERTER
MP2012 Rev. 1.01 www.MonolithicPower.com 3
9/22/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
(5)
V
IN
= V
EN
= 3.6V, T
A
= +25°C, unless otherwise noted.
Parameters Condition Min Typ Max Units
Supply Current V
EN_
= V
IN
, V
FB
= 0.9V
600 750 A
Shutdown Current V
EN_
= 0V, V
IN
= 6V 0.01 1 A
Thermal Shutdown Trip Threshold Hysteresis = 20°C 150 °C
EN Trip Threshold -40°C T
A
+85°C 0.3 1.0 1.5 V
EN Input Current V
EN
= 0V 0.1 1.0 A
EN Input Current V
EN
= 6V 6 A
IN Undervoltage Lockout Threshold Rising Edge 2.15 2.40 2.65 V
IN Undervoltage Lockout Hysteresis 160 mV
Regulated FB Voltage
T
A
= +25°C
-40°C T
A
+85°C
0.784
0.776
0.800
0.800
0.816
0.824
V
FB Input Bias Current V
FB
= 0.8V -50 -2 +50 nA
SW PFET On Resistance I
SW
= 100mA 0.18 0.25 0.28
SW NFET On Resistance I
SW
= -100mA 0.14 0.2 0.24
SW Leakage Current
V
EN
=0V; V
IN
=6V
V
SW_
=0V
-1 0.1 1 A
SW Leakage Current
V
EN
=0V; V
IN
=6V
V
SW_
=6V
-5 1.5 5 A
SW PFET Peak Current Limit
Duty Cycle=100%
Duty Cycle=50%
(6)
2.1
3.0
3.5
A
Switching Frequency 1.0 1.2 1.4 MHz
Notes:
5) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
PIN FUNCTIONS
Pin # Name Description
1 FB
Feedback input.
A
n external resistor divider from the output to GND, tapped to the FB
pin sets the output voltage.
2
GND,
Exposed Pad
Ground pin. Connect exposed pad to ground plane for proper thermal
performance.
3 SW Switch node to the inductor.
4 PVIN Input supply pin for power FET.
5 VIN Input Supply pin for controller. Put small decoupling ceramic near this pin.
6 EN Enable input, “High” enables MP2012. EN is pulled to GND with 1Meg internal resistor.

MP2012DQ-LF-P

Mfr. #:
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 1.5A, 6V, 1.2Mhz Sync Step-Down
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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