AT1367A/B/C/D

Preliminary Product Information

1MHz, 800mA Synchronous Buck Converter

With Power Good Detector & LDO

7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

3/2/2006

REV:1.2

5

Typical characteristics

Efficiency VS. Output1 Current

50

55

60

65

70

75

80

85

90

95

100

10

100

1000

Output1 Current(mA)

L=2.2uH

L=3.3uH

L=4.7uH

CH1：Vin, CH2：Vout1, CH3：PG, CH4：/PG

CH1：Vout1, CH2：Vout2, CH4：Iout1

Iout1=100mA~400mA, Iout2=300mA

Efficiency VS. Output1 Current

50

55

60

65

70

75

80

85

90

95

100

10

100

1000

Output1 Current(mA)

VCC=5V

VCC=4.2V

VCC=3.6V

CH1：Vout1, CH2：Vout2, CH3：PG, CH4：CTL

CH1：Vout1, CH2：Vout2, CH4：Iout2

Iout1=300mA, Iout2=100mA~300mA