WM8311GEB/V Wolfson Microelectronics, WM8311GEB/V Datasheet - Page 22

• Manufacturer Part Number: WM8311GEB/V
• Description: POWER MANAGEMENT SUBSYSTEM, 121BGA
• Manufacturer: Wolfson Microelectronics

Specifications of WM8311GEB/V

• Supply Voltage: 5.5V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 7
• Digital Ic Case Style: BGA
• No. Of Pins: 121
• No. Of Regulated Outputs: 9
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

WM8311
7.7
Unless otherwise noted: T
w
General
Supply voltage
(Voltage required to commence
charging; note that charging
can continue at lower supply
voltages, eg. under current
throttling conditions)
Target voltage
Charger re-start threshold
(Trickle charging starts when
battery voltage is below this
threshold)
Defective battery threshold
Defective battery timeout
Overvoltage threshold
End of Charge Current
Maximum trickle charge current
Fast charge threshold
(Fast charging fast-charge is
only possible when battery
voltage is above this threshold)
Maximum fast charge current
Supply voltage regulation level
(Current throttling is applied if
supply drops to this level)
Internal Battery FET ‘On’
Resistance
Battery Temperature Monitoring
NTCMON voltage for high
battery temperature detection
NTCMON voltage for low
battery temperature detection
NTCMON voltage for ‘no NTC’
detection
BATTERY CHARGER
PARAMETER
A
= -40°C to +85ºC; Typical values are at T
V
V
SYMBOL
V
V
V
t
V
R
V
V
BATT_RSTRT
I
I
V
V
BATT_DEF
TRKL_LIM
FAST_CHG
FAST_LIM
BATT_TGT
BATT_DEF
SYS_REG
BTEMP_H
BATT_OV
BTEMP_L
CHG_SW
SYSVDD
NO_NTC
I
EOC
CHG_VSEL = 00
CHG_VSEL = 01
CHG_VSEL = 10
CHG_VSEL = 11
Set by CHG_ITERM
Set by CHG_TRKL_ILIM
Set by CHG_FAST_ILIM
V
V
V
V
V
V
V
V
BATTVDD
BATTVDD
NTCMON
NTCMON
NTCMON
NTCMON
NTCMON
NTCMON
TEST CONDITIONS
falling
rising
rising
falling
rising
falling
= 3.8V
= 3.3V
A
= +25ºC
4.05
4.15
MIN
4.3
4.0
4.1
V
V
V
V
V
V
20 to 90
CHG_V
0.344 ×
0.365 ×
0.767 ×
0.743 ×
0.961 ×
0.931 ×
100mV
SEL -
NTCBIAS
NTCBIAS
NTCBIAS
NTCBIAS
NTCBIAS
NTCBIAS
50 to
50 to
1000
TYP
4.05
4.10
4.15
4.20
2.85
2.85
200
100
4.5
30
90
PP, December 2009, Rev 3.0
MAX
4.15
4.25
5.5
4.1
4.2
Pre-Production
UNIT
mins
mΩ
mA
mA
mA
V
V
V
V
V
V
V
V
V
22