Api9221, New prod uc t logic state table, Charging profile diagram – Diodes API9221 User Manual
Page 11
API9221
CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY
CHARGER with OVP USB BYPASS and 10mA LDO
API9221
Document number: DS32204 Rev. 2 - 2
11 of 15
November 2011
© Diodes Incorporated
NEW PROD
UC
T
Logic State Table
INPUTS
OUTPUTS
EN
VDC INPUT
VALID*
VUSB INPUT
VALID*
PPR
CHG
Charging State
VDC_LDO
USB_BYP
X
No
No
Hi Z
Hi Z
Off
Off
Off
HIGH Yes
No LOW
Hi
Z Off
On Off
LOW Yes
No LOW
LOW
On
(VDC) On Off
HIGH No
Yes LOW
Hi
Z Off
Off On
LOW No
Yes
LOW
LOW
On
(VUSB)
Off On
HIGH Yes
Yes LOW
Hi
Z Off
On On
LOW Yes
Yes LOW
LOW
On
(VDC) On On
* Valid VDC input: VPO
R
< VDC < OVP
VDC
* Valid VUSB input: VPO
R
< VUSB < OVP
VUSB
X = don’t care
When the charging state is On, the charge current also depends on the battery terminal voltage as described in the text.
Charging Profile Diagram