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3

BL8021

PIN DESCRIPTION

PIN #

NAME

DESCRIPTION

1

EN

Enable pin for the IC. Drive the pin to high to enable the part, and low to disable

2

GND

Ground

3

SW

Inductor connection. Connect an inductor between SW and the regulator output.

4

IN

Supply voltage.

5

FB

Feedback input. Connect an external resistor divider from the output to FB and

GND to set the output to a voltage between 0.6V and Vin

ELECTRICAL PERFORMANCE

35

40

45

50

55

60

65

70

75

80

85

90

95

100

0

100 200 300 400 500 600 700 800 900 1000

Load Current (mA)

Efficiency VS Load Current,

Vout=1.8V

Vin=4.2V

Vin=3.6V

Vin=2.7V

35

40

45

50

55

60

65

70

75

80

85

90

95

100

0

100 200 300 400 500 600 700 800 900 1000

Load Current (mA)

Efficiency VS Load Current,

Vout=2.5V

Vin=4.2V

Vin=3.6V

Vin=2.7V

35

40

45

50

55

60

65

70

75

80

85

90

95

100

0

100 200 300 400 500 600 700 800 900 1000

Load Current (mA)

Efficiency VS Load Current,

Vout=1.2V

Vin=4.2V

Vin=3.6V

Vin=2.7V