ADP5062CP-EVALZ Analog Devices, ADP5062CP-EVALZ Datasheet - Page 22

• Manufacturer Part Number: ADP5062CP-EVALZ
• Description: Power Management IC Development Tools ADP5062 Evaluation board
• Manufacturer: Analog Devices
• Type: Linear Regulators - Standardr
• Series: ADP5062r

Specifications of ADP5062CP-EVALZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: ADP5062
• Input Voltage: 4 V to 6.7 V
• Description/function: Battery charger (isolated flyback)
• Interface Type: I2C
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Output Current: 2.1 A
• Factory Pack Quantity: 1
• For Use With: ADP5062

ADP5062
Battery (ISO_Bx) Short Detection
A battery short occurs under a damaged battery condition or
when the battery protection circuitry is enabled.
On commencing trickle charging, the
tors the battery voltage. If this battery voltage does not exceed
V
declared and the charger is stopped by turning the battery
isolation FET off, but the system voltage is maintained at
V
After source phase, if the ISO_Bx or BAT_SNS level remains
below V
is shorted. Because the battery voltage is low, trickle charging mode
is initiated (see Figure 31). If the BAT_SNS level remains below
V
battery node is shorted.
The trickle charge branch is active during the battery short
scenario, and trickle charge current to the battery is main-
tained until the 60-minute trickle charge mode timer expires.
BATTERY PACK TEMPERATURE SENSING
Battery Thermistor Input
The
that precludes charging when the battery pack temperature is
outside the specified range. The THR pin provides an on and
off switching current source that should be connected directly
to the battery pack thermistor terminal. The activation interval
of the THR current source is 167 ms.
BAT_SHR
ISO_STRK
BAT_SHR
SINK PHASE
ADP5062
BATH
within the specified timeout period, t
after t
by the linear regulator.
SINK PHASE
, either the battery voltage is low or the battery node
V
BATL
ISO_Bx
BAT_SHR
charger features battery pack temperature sensing
has elapsed, the
t
BAT_OK
V
BATL
ISO_Bx
STATUS
SHORT
LOGIC
OPEN
OR
ADP5062
ADP5062
BAT_SHR
t
BAT_OK
SOURCE PHASE
assumes that the
charger moni-
, a fault is
STATUS
SHORT
LOGIC
OPEN
OR
V
BATH
Figure 31. Trickle Charge
ISO_Bx
Figure 30. Sink Phase
Rev. 0 | Page 22 of 44
t
BAT_OK
SOURCE PHASE
The battery pack temperature sensing can be controlled by
I
I
is 0 = temperature sensing off.
Table 13. THR Input Function
If the battery pack thermistor is not connected directly to the
THR pin, a 10 kΩ (tolerance ±20%) dummy resistor 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 when the current is outside the range of less
than 0°C or greater than 60°C.
The
in the battery pack with a nominal room temperature value of
either 10 kΩ at 25°C or 100 kΩ at 25°C, which is selected by
factory programming.
The
in the battery pack with a temperature coefficient curve (beta).
Factory programming supports eight beta values covering a
range from 3150 to 4400 (see Table 43).
2
2
VINx
Open or V
Open or V
4.0 V to 6.7 V
C, using the conditions shown in Table 13. Note that the
C register default setting for EN_THR (Register Address 0x07)
ADP5062
ADP5062
BATTERY
ADP5062
STATUS
SHORT
LOGIC
LOW
OR
IN
IN
= 0 V to 4.0 V
= 0 V to 4.0 V
Conditions
charger is designed for use with an NTC thermistor
charger is designed for use with an NTC thermistor
charger monitors the voltage in the THR pin and
V
ISO_Bx
BATH
TRICKLE CHARGE
V
V
<2.5 V
>2.5 V
Don't care
BAT_SHR
ISO_Bx
ISO_Bx
t
BAT_OK
THR Function
Off
Off, controlled by I
Always on
t
BAT_SHR
STATUS
LOGIC
OPEN
Data Sheet
STATUS
SHORT
LOGIC
2
C