Trends for TVs, BluRay/DVD recorders, LCD monitors and other devices are moving toward larger, more diverse sizes and specifications as the market for LCD displays grows, and following the switch to terrestrial digital broadcasts. To meet this increased demand, DC-DC converter ICs that are capable of a wider range of input and output voltages are required for the power supply of large TVs and recorders.
 The <MM3543> has been developed as a DC-DC converter with a maximum output current of 3 A to suit a wide range of circuits, and delivers a diverse input and output voltage range from 4.5 to 20 V with an integrated N-Channel MOSFET with an ON resistance of 120 mΩ.

1.	Wide input voltage range. Operates on 4.5 to 20 V with a maximum output current of 3 A
2.	Integrated N-MOSFET with 22 V withstand voltage and low ON resistance of 120 mΩ
3.	Fast transient response and simplified phase compensation with current mode control
4.	Various protection circuits, including overheating, low input, current limit, output over voltage, low output voltage and timer safety measures such as integrated timer latch function
5.	Integrated bootstrap diode
6.	Can be used with low ESR ceramic condensers
7.	High heat-dissipating, small surface area package: HSOP-8C

Input voltage range	4.5 to 20 V
Output voltage range	0.8 to 16 V
Standard voltage	0.8 V ±1%
Oscillating frequency	500 kHz
Switch ON resistance	120 mΩ
Maximum output current	3 A
Current limit	4.5 A
Low output voltage protection	0.4 V
Output over voltage protection	1.2 V
Overheating protection	160ºC
Timer latch time	1 msec.
Operating temperature range	-40 to +85ºC
Package	HSOP-8C
External dimensions	5.0 (W) x 6.2 (D) x 1.55 (H) unit:mm