Datasheet

bq3060
www.ti.com SLUS928A –MARCH 2009–REVISED NOVEMBER 2009
EXTERNAL CELL BALANCE DRIVE
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Cell balance ON for VC1, VCi-VCi+1 = 4V, where i = 1~4 5.7
Internal pull-down
Cell balance ON for VC2, VCi-VCi+1 = 4V, where = i = 1~4 3.7
R
BAL_drive
resistance for external kΩ
Cell balance ON for VC3, VCi-VCi+1 = 4V, where = i = 1~4 1.75
cell balance
Cell balance ON for VC4, VCi-VCi+1 = 4V, where = i = 1~4 0.85
CELL VOLTAGE MONITOR
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
CELL Voltage Measurement Accuracy
(1)
T
A
= –10°C to 60°C ±10 ±20 mV
T
A
= –40°C to 85°C ±10 ±35
(1) This is the performance expected for non-calibrated device.
INTERNAL TEMPERATURE SENSOR
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
T
(TEMP)
Temperature sensor accuracy ±3% °C
THERMISTOR MEASUREMENT SUPPORT
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
R
ERR
Internal resistor drift –230 ppm/°C
R Internal resistor TS1, TS2 17 20 kΩ
INTERNAL THERMAL SHUTDOWN
PARAMETER
(1)
TEST CONDITIONS MIN TYP MAX UNIT
T
MAX
Maximum REG27 temperature 125 175 °C
T
RECOVER
Recovery hysteresis temperature 10 °C
(1) Parameters assured by design. Not production tested.
HIGH FREQUENCY OSCILLATOR
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
(OSC)
Operating frequency of CPU clock 2.097 MHz
T
A
= –20°C to 70°C –2% ±0.25% 2%
f
(EIO)
Frequency error
(1)
T
A
= –40°C to 85°C –3% ±0.25% 3%
t
(SXO)
Start-up time
(2)
T
A
= –25°C to 85°C 3 6 ms
(1) The frequency drift is included and measured from the trimmed frequency at VBAT = VPACK = 14.4 V, T
A
= 25°C
(2) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% when the device is already powered.
LOW FREQUENCY OSCILLATOR
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
(LOSC)
Operating frequency 32.768 MHz
T
A
= –20°C to 70°C –1.5% ±0.25% 1.5%
f
(LEIO)
Frequency error
(1)
T
A
= –40°C to 85°C –2.5% ±0.25% 2.5%
t
(LSXO)
Start-up time
(2)
T
A
= –25°C to 85°C 100 ms
(1) The frequency drift is included and measured from the trimmed frequency at VBAT = VPACK = 14.4 V, T
A
= 25°C.
(2) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%.
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