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LC-22DV510
LC-24DV510
18. MP2012 (U176)
18.1.
General 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.
18.2.
Features
2.7-6V Input Operation Range
Output Adjustable from 0.8V to VIN
1μA Max Shutdown Cu
rrent.
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 6-pin 3x3mm QFN
18.3.
Pinning
Pin
#
Name
Description
1
FB
Feedback input. An 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.
17.
17.3
17.2
17.1
Summary of Contents for LC-22DV510K
Page 19: ...19 LC 22DV510 LC 24DV510 1 1 General Block Diagram 1 1 General Block Diagram ...
Page 27: ...27 LC 22DV510 LC 24DV510 4 4 Frequency response ...
Page 29: ...29 LC 22DV510 LC 24DV510 5 3 Absolute Ratings 5 3 1 Electrical Characteristics ...
Page 30: ...30 LC 22DV510 LC 24DV510 5 3 2 Operating Specifications ...
Page 31: ...31 LC 22DV510 LC 24DV510 5 4 Pinning ...
Page 33: ...33 LC 22DV510 LC 24DV510 6 3 2 Operating Specifications 6 4 Pinning ...
Page 35: ...35 LC 22DV510 LC 24DV510 Ì µ µ ò Ú ĞÉîê ĞÉîé µ º ò Ú ĞÍïêô ĞÍïéô ĞÍêğ µ µ ò ...
Page 48: ...48 LC 22DV510 LC 24DV510 12 4 Pinning 11 4 ...
Page 49: ...49 LC 22DV510 LC 24DV510 ...
Page 51: ...51 LC 22DV510 LC 24DV510 ...
Page 65: ...65 LC 22DV510 LC 24DV510 23 3 VGA CN132 22 3 ...
Page 68: ...68 LC 22DV510 LC 24DV510 23 3 Options Options Options 1 Options 2 ...
Page 74: ...74 LC 22DV510 LC 24DV510 4 Hardware Architecture Connector Arrangement ...
Page 75: ...75 LC 22DV510 LC 24DV510 Block Diagram ...
Page 86: ...86 LC 22DV510 LC 24DV510 NOTES ...
Page 100: ...100 LC 22DV510 LC 24DV510 29 PRINTED WIRING BOARD Main Unit PWB Top Side ...
Page 120: ...120 LC 22DV510 LC 24DV510 Notes ...
Page 123: ...123 LC 22DV510 LC 24DV510 Notes ...