ADP5062CP-EVALZ Analog Devices, ADP5062CP-EVALZ Datasheet - Page 20

• 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
Safety Timer
While in charger mode, if the watchdog timer expires, the
ADP5062
Watchdog Timer section). If the processor has programmed
charging parameters by the time the charger initiates the safety
timer, the I
a period of t
CHARGER_STATUS [2:0] bits.
Charge Complete
The
in constant voltage fast charge mode. If the current falls
below I
and the CHDONE flag is set. If the charging current falls below
I
timer resets.
Recharge
After the detection of charge complete, and the cessation of
charging, the
the battery discharges through normal use. If the BAT_SNS pin
voltage falls to V
circumstances, triggering the recharge threshold results in the
charger starting directly into fast charge constant voltage mode.
The recharge function can be disabled in the I
(Register Address 0x0C, Bit 3) informs the system that a recharge
cycle is required.
IC Enable/Disable
The
pin (if factory programmed to do so) or by the I
internal control circuits are disabled when the IC is disabled. Dis-
abling the IC1 option can also control the states of the LDO FET
and the battery isolation FET.
It is critical to note that during the disable IC1 mode, a high
voltage at VINx passes to the internal supply voltage because all
of the internal control circuits are disabled. The VINx supply
voltage must fulfill the following condition:
Battery Charging Enable/Disable
The
I
under this circumstance and can be set in I
I
for details).
The
of the external DIG_IOx pins (if factory programmed to do so).
Any change in the I
setting.
2
END
2
C programmed system voltage from 4.3 V to 5.0 V (see Table 26
C EN_CHG bit to low. The LDO to the system still operates
for less than t
ADP5062
ADP5062
ADP5062
ADP5062
V
ISO_Bx
END
charger initiates the safety timer, t
and remains below I
LIM
< VINx < 5.5 V
SAFE
ADP5062
is set to the default value. Charging continues for
charger monitors the charging current while
IC can be disabled by the DIG_IO2 digital input
charging function can be disabled by setting the
charging function can also be controlled via one
, and then the charger switches off and sets the
RCH
END
, the charger reactivates charging. Under most
2
C EN_CHG bit takes precedence over the pin
and then rises above I
charger monitors the BAT_SNS pin as
END
for t
END
, charging stops
2
END
C to the default or
SAFE
2
C, but a status bit
again, the t
2
(see the
C registers. All
END
Rev. 0 | Page 20 of 44
Battery Voltage Limit to Prevent Charging
The battery monitor of the
to monitor battery voltage and prevent charging when the battery
voltage is higher than V
start-up (enabled by EN_CHG or DIG_IO3). This function can
prevent unnecessary charging of a half discharged battery and,
as such, can extend the lifetime of the Li-Ion battery cell. Charging
starts automatically when the battery voltage drops below V
and continues through full charge cycle until the battery voltage
reaches V
By default, the charging voltage limit is disabled and it can be
enabled from I
SYS_EN Output
The
system until the battery is at the minimum required level for
guaranteed system start-up. When there are minimum battery
voltage and/or minimum battery charge level requirements, the
operation of SYS_EN can be set by I
operation can be factory programmed to four different operating
conditions as described in Table 11.
Table 11. SYS_EN Mode Descriptions
SYS_EN Mode
Selection
00
01
10
11
Indicator LED Output (ILED)
The ILED is an open-drain output for an indicator LED connec-
tion. Optionally, the ILED output can be used as a status output
for a microcontroller. Indicator LED modes are listed in Table 12.
Table 12. Indicator LED Operation Modes
ADP5062
IC Off
LDO Mode Off
LDO Mode On
Charge Mode
Timer Error (t
Overtemperature (T
ADP5062
TRM
Mode
TRK
(typically 4.2 V).
2
C Register Address 0x08, Bit 5 (EN_CHG_VLIM).
features a SYS_EN open-drain FET to enable the
, t
Description
SYS_EN is activated when LDO is active and
system voltage is available.
SYS_EN is activated by the ISO_Bx voltage, the
battery charging mode.
SYS_EN is activated and the isolation FET is
disabled when the battery drops below V
This option is active when VINx = 0 V and the
battery monitor is activated from Register 0x07,
Bit 5 (EN_BMON).
SYS_EN is active in LDO mode when the charger is
disabled.
SYS_EN is active in charging mode when V
V
CHG
WEAK
, t
SD
)
.
SAFE
CHG_VLIM
)
ADP5062
ILED Mode
Off
Off
Off
Continuously on
Blinking
Blinking
(typically 3.7 V) during charging
2
C programming. The SYS_EN
charger can be configured
Data Sheet
On/Off Time
167 ms/833 ms
1 sec/1 sec
CHG_VLIM
WEAK
ISO_Bx
.
≥