Datasheet

3.3 DISSIPATION RATINGS
3.4 POWER-ON RESET
3.5 INTERNAL TEMPERATURE SENSOR CHARACTERISTICS
3.6 HIGH-FREQUENCY OSCILLATOR
3.7 LOW-FREQUENCY OSCILLATOR
bq27500
bq27501
System-Side Impedance Track™ Fuel Gauge
www.ti.com SLUS785D – SEPTEMBER 2007 – REVISED APRIL 2008
T
A
≤ 40 ° C DERATING FACTOR
PACKAGE R
θ JA
POWER RATING T
A
> 40 ° C
12-pin DRZ
(1)
482 mW 5.67 mW/ ° C 176 ° C/W
(1) This data is based on using a four-layer JEDEC high-K board with the exposed die pad connected to a Cu pad on the board. The board
pad is connected to the ground plane by a 2- × 2-via matrix.
T
A
= –40 ° C to 85 ° C, typical values at T
A
= 25 ° C and V
BAT
= 3.6 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IT+
Positive-going battery voltage input at V
CC
2.09 2.2 2.31 V
V
HYS
Hysteresis voltage 45 115 185 mV
T
A
= –40 ° C to 85 ° C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25 ° C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
G
TEMP
Temperature sensor voltage gain –2 mV/ ° C
T
A
= –40 ° C to 85 ° C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25 ° C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
OSC
Operating frequency 2.097 MHz
T
A
= 0 ° C to 60 ° C –2% 0.38% 2%
f
EIO
Frequency error
(1) (2)
T
A
= –20 ° C to 70 ° C –3% 0.38% 3%
T
A
= –40 ° C to 85 ° C –4.5% 0.38% 4.5%
t
SXO
Start-up time
(3)
2.5 5 ms
(1) The frequency error is measured from 2.097 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at V
CC
= 2.5 V, T
A
= 25 ° C.
(3) The start-up time is defined as the time it takes for the oscillator output frequency to be within ± 3% of typical oscillator frequency.
T
A
= –40 ° C to 85 ° C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25 ° C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
LOSC
Operating frequency 32.768 kHz
T
A
= 0 ° C to 60 ° C –1.5% 0.25% 1.5%
f
LEIO
Frequency error
(1) (2)
T
A
= –20 ° C to 70 ° C –2.5% 0.25% 2.5%
T
A
= –40 ° C to 85 ° C –4% 0.25% 4%
t
LSXO
Start-up time
(3)
500 µ s
(1) The frequency drift is included and measured from the trimmed frequency at V
CC
= 2.5 V, T
A
= 25 ° C.
(2) The frequency error is measured from 32.768 kHz.
(3) The start-up time is defined as the time it takes for the oscillator output frequency to be within ± 3% of typical oscillator frequency.
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