- 8 -

0.40V

0.20A

. For 3V~4.2Vin to 5V 1A out , 0.62V~0.65V is suitable.

If the current limit exceeds 2A, maybe the IC will be go in to over temperature protection status without good

layout.

OC SETTING2( SETTING CURRENT LIMIT BY ONE RESISTOR)

can be adjusted SW current limit by one resistor connected with OC pin just like Typical

Application Circuit2 。The setting sheet is as below( Vin=3.6V

Vout=5V )---Only list the typical Ilim number，

the actual data may be in +/- 20% above them because of some discrete data from IC and resistor.

Please do not let it float.

Rset

（

ohm）

Ilim(typ)

168K

2.2A

150K

1.9A

130K

1.5A

120K

1.3A

100K

0.9A

. For 3V~4.2Vin to 5V 1A out , 150K~170Kohm is suitable.

If the current limit exceeds 2A, maybe the IC will be go in to over temperature protection status without good

layout.

DIODE SELECTION

According to max Iout

and max Vout, you can select suitable diode. Normally we select

diode

If=(1.5~2)*Ioutmax and VR=(1.5~2)*Voutmax. For high efficiency，suggest that you select low Vf Schottky

diode. ONsemi’s MBRA210LT3 is prefer

0.45V

0.55A

Shenzhen H&M Semiconductor Co.Ltd

http：//www.hmsemi.com