API9221

Car/Wall or USB Supply Input Lithium Battery Charger

with OVP USB Bypass and 10mA LDO

API9221

Document number: DS32204 Rev. 1 - 2

5 of 17

www.diodes.com

May 2010

© Diodes Incorporated

Electrical Characteristics

API9221 is tested at VDC = VUSB = 5V at an ambient temperature of +25°C unless otherwise noted.

Symbol

Parameter

Test Conditions

Min

Typ.

Max

Unit

CHARGER POWER-ON THRESHOLDS

Rising VUSB/VDC Threshold

3.4

3.9

4.2

V

Falling VUSB/VDC Threshold

3.2

3.7

4.0

V

INPUT VOLTAGE OFFSET

Rising VDC or VUSB, relative to

the comparator

output

-

150

250

mV

Falling VDC or VUSB, relative to

the comparator

output

20

80

-

mV

STANDBY CURRENT

BAT Pin Sink Current

EN

= HIGH or both

inputs are floating

-

0.05

0.5

µA

VDC Pin Supply Current

EN

-

380

460

µA

VUSB Pin Supply Current

EN

= HIGH,

USB_BYP

disconnected

-

330

400

µA

VDC/VUSB Pin Supply Current

EN

USB_BYP

disconnected

-

0.63

1.1

mA

VOLTAGE REGULATION

Final Output Voltage, BAT Pin

Load = 10mA

4.158

4.2

4.242

V

Load = 10mA

4.174

4.2

4.226

V

VDC Linear ON-resistance

-

550

-

m

Ω

VUSB Linear ON-resistance

-

550

-

m

Ω

CHARGE CURRENT

VDC Pin Output Voltage

1.22

1.25

1.28

V

VDC Constant Current

= 2.7V to 3.8V

450

550

600

mA

VDC Trickle Charge Current

= 2.2V, given as a %

15

17

19

%