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| BQ28550-R1 Datasheet, PDF (7/42 Pages) Texas Instruments – Single Cell Li-Ion Battery Gas Gauge | |||
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Not Recommended for New Designs
www.ti.com
bq28550-R1
SLUSAS4A â OCTOBER 2012 â REVISED SEPTEMBER 2014
Electrical Characteristics: Voltage Regulator (continued)
TA = â40 to +85ºC, VBAT =1.5 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT =3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tVOFF
Regulator off voltage
delay time
VBAT = 3.6 V â 5.5 V, Rload = 100 Ω
VREG = 2.5 V â 2.3 V, Cload = 0.1 µF,
TA = 25°C
50
100
µs
6.7 Electrical Characteristics: Power-On Reset
TA = â40 to +85ºC; Typical Values at TA = 25ºC (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIT+
VHYS
Positive-going battery
voltage input at VREG
No external loading on VREG
No external loading on VREG
MIN
2.125
75
TYP
2.200
125
MAX
2.275
175
UNIT
V
mV
6.8 Electrical Characteristics: Internal Temperature Sensor Characteristics
TA = â40 to +85ºC; VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
GTEMP
Temperature Sensor
Voltage Gain
â2
mV/°C
6.9 Electrical Characteristics: High Frequency Oscillator
TA = â40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
f(OSC)
f(EIO)
t(SXO)
Operating frequency
Frequency error (1), (2)
Start-up time (3)
TA = 0°C to 60°C
TA = â20°C to 70°C
TA = â40°C to 85°C
â2.0%
â3.0%
â4.5%
2.097
0.38%
0.38%
0.38%
2.5
2.0%
3.0%
4.5%
5
MHz
ms
(1) The frequency error is measured from 2.097 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, TA = 25°C.
(3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%.
6.10 Electrical Characteristics: Low Frequency Oscillator
TA = â40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
f(LOSC)
f(LEIO)
t(LSXO)
Operating frequency
Frequency error (1), (2)
Start-up time (3)
TA = 0°C to 60°C
TA = â20°C to 70°C
TA = â40°C to 85°C
32.768
kHz
â1.5%
0.25%
1.5%
â2.5%
0.25%
2.5%
â4.0%
0.25%
4.0%
500
μs
(1) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, TA = 25°C.
(2) The frequency error is measured from 32.768 kHz.
(3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%.
6.11 Electrical Characteristics: Integrating ADC (Coulomb Counter) Characteristics
TA = â40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN(SR)
tCONV(SR)
Input voltage range,
V(SRN) and V(SRP)
Conversion time
Resolution
VSR = V(SRN) â V(SRP)
Single conversion
â0.125
1
14
0.125
V
s
15
bits
Copyright © 2012â2014, Texas Instruments Incorporated
Product Folder Links: bq28550-R1
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