BQ27546-G1 Datasheet, PDF (29/38 Pages) Texas Instruments – nullSingle-Cell Li-Ion Battery Fuel Gauge

www.ti.com
10.3 Application Curves
2.65
2.6
2.55
2.5
2.45
2.4
2.35
VREGIN = 2.7 V
VREGIN = 4.5 V
Temperature (qC)
D001
bq27546-G1
SLUSC53A – MAY 2015 – REVISED DECEMBER 2015
8.8
8.7
8.6
8.5
8.4
8.3
8.2
8.1
8
-40 -20
0
20
40
60
Temperature (qC)
80 100
D002
Figure 11. Regulator Output Voltage Vs. Temperature
34
33.5
33
32.5
32
31.5
31
30.5
30
-40 -20
0
20
40
60
Temperature (qC)
80 100
D003
Figure 12. High-Frequency Oscillator Frequency Vs.
Temperature
5
4
3
2
1
0
-1
-2
-3
-4
-5
-30 -20 -10 0 10 20 30 40 50 60
Temperature (qC)
D004
Figure 13. Low-Frequency Oscillator Frequency Vs.
Temperature
Figure 14. Reported Internal Temperature Measurement
Vs. Temperature
11 Power Supply Recommendations
11.1 Power Supply Decoupling
Both the REGIN input pin and the V_CC output pin require low equivalent series resistance (ESR) ceramic
capacitors placed as close as possible to the respective pins to optimize ripple rejection and provide a stable and
dependable power rail that is resilient to line transients. A 0.1-µF capacitor at the REGIN and a 1-µF capacitor at
V_CC will suffice for satisfactory device performance.
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: bq27546-G1
Submit Documentation Feedback
29