BQ24262_15 Datasheet, PDF (11/56 Pages) Texas Instruments – bq2426x 3-A, 30-V, Host-Controlled Single-Input, Single-Cell Switched-Mode Li-Ion Battery Charger With Power-Path Management and USB-OTG Support

Not Recommended for New Designs : bq24260, bq24261
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8.6 Switching Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
f_OSC
D_MAX
D_MIN
Oscillator frequency
Maximum duty cycle
Minimum duty cycle
bq24260, bq24261, bq24261M, bq24262
SLUSBU4D – DECEMBER 2013 – REVISED APRIL 2015
MIN
TYP
MAX UNIT
1.35
1.5
1.65 MHz
95%
0%
8.7 Typical Characteristics
10
8
6
4
2
0
-2
-4
-6
-8
-10
2.9
100
TA=25ºC
TA=0ºC
TA=85ºC
TA=60ºC
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
VBAT (V)
Figure 1. Charge Current vs Battery Voltage
90
80
70
60
50
40
2
2.5
3
3.5
4
4.5
VBAT (V)
Figure 3. Efficiency vs Battery Voltage
95
90
85
80
75
70
0
0.0
VIN=5V
VIN=7V
VIN=10V
VIN=12V
0.5
1
1.5
2
2.5
3
Load Current (A)
Figure 2. Efficiency vs Output Current
-0.5
-1.0
-1.5
-2.0
TA=25ºC
-2.5
TA=60ºC
TA=0ºC
-3.0
0
0.5
1
1.5
2
IBAT (A)
Figure 4. VBAT Accuracy vs IBAT – 4.2-V Setting
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