ADP5065 Analog Devices, ADP5065 Datasheet - Page 22

• Manufacturer Part Number: ADP5065
• Description: Fast Charge Battery Management with Power Path and USB Compatibility
• Manufacturer: Analog Devices

Specifications of ADP5065

• Product Description: Fast Charge Battery Management with Power Path and USB Compatibility
• Switching/linear: Switching
• Cell Type: Li-Ion
• Final Voltage Options: 4.2
• Accuracy Over Temp (%): 0.3%
• Temp Range: -40 to +125°C
• Package: WLCSP-20
• Active For Param Search: Yes

ADP5065
BATTERY PACK TEMPERATURE SENSING
Battery Thermistor Input
The
sensing that precludes charging when the battery pack
temperature is outside the specified range. The THR pin
provides an on and off switching current source, which should
be connected directly to the battery pack thermistor terminal.
The activation interval of the THR current source is 167 ms.
The battery pack temperature sensing can be controlled by
I
I
0 = temperature sensing off.
Table 10. THR Input Function
If the battery pack thermistor is not connected directly to the
ADP5065
must be connected between the THR input and GND. Leaving
the THR pin open results in a false detection of the battery
temperature being <0°C and charging is disabled.
The
suspends charging if the current is outside the range of less than
Table 11. JEITA Li-Ion Battery Charging Specification Defaults
Parameter
JEITA Cold Temperature Limits
JEITA Cool Temperature Limits
JEITA Typical Temperature Limits
JEITA Warm Temperature Limits
JEITA Hot Temperature Limits
Table 12. JEITA Reduced Charge Current Levels
ICHG[2:0] (Default)
000 = 550 mA
001 = 650 mA
010 = 750 mA
011 = 850 mA
100 = 950 mA
101 = 1050 mA
110 = 1150 mA
111 = 1250 mA
2
2
VINx
Open or V
Open or V
4.0 V to 5.5 V
C using the conditions shown in Table 10. Note that the
C register default setting for EN_THR (Register 0x07) is
ADP5065
ADP5065
THR pin, a 10 kΩ (tolerance ±20%) dummy resistor
IN
IN
= 0 V to 4.0 V
= 0 V to 4.0 V
Conditions
charger features battery pack temperature
charger monitors the voltage in the THR pin and
V
<2.5 V
>2.5 V
Don't care
ISO_B
Symbol
I
I
I
I
I
JEITA Cool Temperature Limit—Reduced Charge Current Levels
JEITA_COLD
JEITA_COOL
JEITA_TYP
JEITA_WARM
JEITA_HOT
Off
Off, controlled by I
THR Function
Always on
Conditions
No battery charging occurs.
Battery charging occurs at approximately 50% of programmed level.
See Table 12 for specific charging current reduction levels.
Normal battery charging occurs at default/programmed levels.
Battery termination voltage (V
programmed value.
No battery charging occurs.
2
C
Rev. A | Page 22 of 40
0°C or greater than 60°C. For temperatures greater than 0°C,
the THR_STATUS register is set accordingly, and for temperatures
lower than 60°C, the THR_STATUS register is, likewise, set
accordingly.
The
thermistor in the battery pack with a nominal room tempera-
ture value of either 10 kΩ at 25°C or 100 kΩ at 25°C, which is
selected by a fuse.
The
thermistor in the battery pack with a temperature coefficient
curve (beta). Fuse-selectable beta programming is supported by
eight steps covering a range from 3150 to 4400 (see Table 34).
JEITA Li-Ion Battery Temperature Charging Specification
The
charging temperature specifications as outlined in Table 11.
The JEITA function can be enabled via the I
the
is reduced according to Table 12.
When the
the
•
•
ICHG JEITA (mA)
250
300
350
400
450
500
550
600
ADP5065
ADP5065
ADP5065
ADP5065
ADP5065
Stops charging the battery.
Connects/enables the battery isolation FET such that the
system power supply node is connected to the battery.
TRM
) is reduced by 100 mV from
ADP5065
detects a JEITA cool condition, charging current
takes the following actions:
charger is designed for use with an NTC
charger is designed for use with an NTC
is compliant with the JEITA Li-Ion battery
identifies a hot or cold battery condition,
2
C interface. When
Min
0
10
45
60
Data Sheet
Max
0
10
45
60
Unit
°C
°C
°C
°C
°C