Analog Devices ADP2291 Evaluation Board ADP2291RM-EVALZ ADP2291RM-EVALZ Scheda Tecnica
Codici prodotto
ADP2291RM-EVALZ
ADP2291
Rev. A | Page 3 of 20
SPECIFICATIONS
V
IN
= 5.5 V, V
BAT
= 4.2 V, R
ADJ
open, T
A
= –40°C to +85°C, typical values are at 25°C, unless otherwise noted.
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
POWER
SUPPLY,
IN
Input Voltage
4.5
12
V
Current Draw
Fast charge/precharge/end-of-charge modes
Timeout/shutdown/battery fault
Timeout/shutdown/battery fault
6
1.4
1.4
9
1.8
1.8
mA
mA
mA
BATTERY
VOLTAGE,
BAT
Voltage Accuracy, End-of-Charge (V
BAT, EOC
)
T
A
= 0°C to +50°C
V
IN
= 4.5 V to 12 V
V
IN
– V
CS
= VRS/10
4.158 4.2 4.242 V
Load Regulation, No Battery
V
IN
– V
CS
= 0 to VRS
−80
mV
Current Draw
Timeout mode, V
IN
= 4.5 V to 12 V
45
µA
Current Draw
Battery fault/shutdown mode, V
IN
= 4.5 V to 12 V
0.1
1
µA
Reverse Leakage Current
Power-down mode: V
IN
= float, V
BAT
= 4.2 V
0.1
µA
FAST CHARGE MODE
Sense Voltage Setpoint (VRS)
V
IN
– V
CS
, R
ADJ
= open
V
IN
= 4.5 V to 12 V
V
BAT
= 3.6 V
140 150
160 mV
Sense Voltage Setpoint (VRS)
V
IN
– V
CS
, R
ADJ
= 100 kΩ
V
IN
= 4.5 V to 12 V
V
BAT
= 3.6 V
40 50
60 mV
Current Regulation Adjustment
Per V of (3 V – V
ADJ
)
67
mV/V
PRECHARGE
MODE
Sense Voltage Setpoint (VRS)
V
IN
– V
CS,
R
ADJ
= open
V
IN
= 4.5 V to 12 V
V
BAT
= 2 V
10 15
20 mV
Sense Voltage Setpoint (VRS)
V
IN
– V
CS
, R
ADJ
= 100 kΩ
V
IN
= 4.5 V to 12 V
V
BAT
= 2 V
5 10
15
mV
BAT Precharge Threshold
V
BAT
rising
2.65
2.85 V
Hysteresis
70
mV
SHUTDOWN
MODE
ADJ Shutdown Threshold
V
ADJ
falling, V
IN
= 4.5 V
0.30
0.45
V
Hysteresis
40
mV
Pull-Up Current from ADJ
V
ADJ
= 0
40
µA
POWER-DOWN
MODE
V
IN
Power-Down Threshold
V
IN
rising
3.6
4
V
Hysteresis
220
mV
V
IN
_Good
Comparator
Threshold (V
IN
> V
BAT
) V
IN
rising
125 170
220 mV
Hysteresis
110
mV
EOC
COMPARATOR
Current Threshold
V
IN
– V
CS
falling, R
ADJ
= open, relative to VRS
7
10
13
%
Current Threshold
V
IN
– V
CS
falling, R
ADJ
= 100 kΩ, relative to VRS
6
10
16
%
Hysteresis
12
mV
RESTART
COMPARATOR
BAT Restart Threshold
V
IN
> 4.5 V, V
BAT
falling, relative to V
BAT, EOC
−170
mV