BQ27532-G1 Datasheet, PDF (26/35 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge

bq27532-G1
SLUSBU6B – SEPTEMBER 2014 – REVISED JANUARY 2016
8.2.3 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
www.ti.com
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 13. 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 14. 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 15. Low-Frequency Oscillator Frequency vs.
Temperature
Figure 16. Reported Internal Temperature Measurement
vs. Temperature
9 Power Supply Recommendations
9.1 Power Supply Decoupling
Both the REGIN input pin and the V_CC output pin require low equivalent series resistance (ESR) ceramic
capacitors placed as closely 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.
26
Submit Documentation Feedback
Product Folder Links: bq27532-G1
Copyright © 2014–2016, Texas Instruments Incorporated