BQ24257 Datasheet, PDF (15/45 Pages) Texas Instruments – 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Integrated Current Sense Resistor

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bq24257
bq24258
SLUSBG0B – FEBRUARY 2013 – REVISED JULY 2013
TYPICAL CHARACTERISTICS (continued)
.
VBAT IQ
18
16
V_IN = 0 V
Charge Enabled
14 SYSOFF = 0
BAT & SYS are Shorted
12
Input IQ with Charge DIS and EN
20
18
Charge EN and DIS
No Battery and System
CE EN
CE DIS
16
14
10
12
8
10
6
8
4
6
2
4
0
2
±2
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0
0
5
10
15
20
25
V_BAT (V)
C007
Figure 9.
Input Voltage (V)
C008
Figure 10.
Input IQ with Charge Enable and Hz
500
450
Charge EN
Hi-Z EN
400
350
300
250
200
150
100
50
0
0
5
10
15
20
25
Input Voltage (V)
C009
Startup
I_CHG = 1 A
I_LIM = 1.5 A
I_SYS = 0 A
V_BAT = 3.6 V
Figure 11.
Figure 12.
Input OVP Event with INT
V_DPM Startup, 4.2 V
I_CHG = 1 A
I_LIM = 1 A
V_BAT = 3.9 V
V_OVP = 10.5 V
I_CHG = 2 A I_LIM = 0.5 A
I_SYS = 0 A
V_BAT = 3.6 V
V_DPM = 4.36 V
Figure 13.
Figure 14.
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