wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 22

• Manufacturer Part Number: wm8352
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8352
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 (WM8352 starts
trickle charging when battery is
below this threshold)
50mA trickle charge current
100mA trickle charge current
Fast Charging
Fast charge threshold (WM8352
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
USB
EOC
I
MAX
CONDITION
CHG_TRICKLE_SEL
CHG_TRICKLE_SEL
CHG_EOC_SEL bits
TEST CONDITIONS
When charging from
When charging from
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
CHG_VSE
L - 100mV
TYP
180
215
20 to 90
2.0
7
TYP
4.05
4.15
2.85
35.9
78.6
750
4.1
4.2
3.1
2.7
PD, June 2009, Rev 4.1
LINE
MAX
MAX
4.15
4.25
5.5
5.5
4.1
4.2
2.9
Production Data
UNITS
UNIT
mA
mA
mA
mA
mA
mA
μA
μA
Ω
V
V
V
V
V
V
V
V
22