wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 22

• Manufacturer Part Number: wm8351
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8351
7.5
Test Conditions
T
7.6
Test Conditions
T
w
A
A
Maximum input voltage
On resistance (at 3.3V)
Current limit flag threshold
Current limit
Quiescent current (EN but not ON)
Quiescent current (EN and ON)
PARAMETER
General
Wall adaptor voltage
USB voltage
Target voltage
Defective battery threshold
End of Charge Current
Trickle Charging
Trickle charge initiation
threshold (WM8351 starts
trickle charging when battery is
below this threshold)
50mA trickle charge current
100mA trickle charge current
Fast Charging
Fast charge threshold (WM8351
can only fast-charge if battery is
above this threshold)
Maximum fast-charge current
Backup Battery (VRTC)
Backup battery charger output.
(Note that this backup charger
voltage also determines the
UVLO threshold.)
= +25ºC unless otherwise noted.
= +25ºC unless otherwise noted.
BATTERY CHARGER
CURRENT LIMIT SWITCH
PARAMETER
SYMBOL
LINE
EOC
USB
I
MAX
CONDITION
CHG_TRICKLE_SEL
CHG_TRICKLE_SEL
CHG_EOC_SEL bits
When charging from
When charging from
TEST CONDITIONS
Programmable in
CHG_VSEL=00
CHG_VSEL=01
CHG_VSEL=10
CHG_VSEL=11
USB power rail
register R168
wall adaptor
= 0 (default)
= 1
MIN
2.7
4.05
4.15
MIN
4.0
4.0
4.0
4.1
2.5
TYP
180
215
2.0
7
CHG_VSEL -
20 to 90
100mV
4.05
4.15
2.85
35.9
78.6
TYP
750
4.1
4.2
3.1
2.7
LINE
MAX
PD, June 2009, Rev 4.1
MAX
4.15
4.25
5.5
5.5
4.1
4.2
2.9
UNITS
Production Data
mA
mA
μA
μA
V
Ω
UNIT
mA
mA
mA
mA
V
V
V
V
V
V
V
22