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| BQ34Z651_15 Datasheet, PDF (12/29 Pages) Texas Instruments – SBS 1.1-Compliant Gas Gauge | |||
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bq34z651
SLUSAL7 â AUGUST 2011
www.ti.com
POWER-ON RESET
Over operating free-air temperature range (unless otherwise noted), TA = â40°C to 85°C, V(REG25) = 2.41 V to 2.59 V,
V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VITâ
Negative-going voltage input
1.7
1.8
1.9
V
VHYS
Power-on reset hysteresis
5
125
200
mV
tRST
RESET active low time
Active low time after power up or watchdog
reset
100
250
560
µs
POWER ON RESET BEHAVIOR
VS
FREE-AIR TEMPERATURE
1.81
1.8
1.79
1.78
1.77
1.76
-40 -20
0
20
40
60
80
TA - Free-Air Temperature - °C
DATA FLASH CHARACTERISTICS OVER RECOMMENDED OPERATING TEMPERATURE AND
SUPPLY VOLTAGE
Typical values at TA = 25°C and V(REG25) = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Data retention
10
Years
Flash programming write-cycles
t(ROWPROG) Row programming time
t(MASSERASE) Mass-erase time
t(PAGEERASE) Page-erase time
I(DDPROG) Flash-write supply current
I(DDERASE) Flash-erase supply current
RAM/REGISTER BACKUP
See (1)
20k
Cycles
2
ms
200 ms
20
ms
5 10
mA
5 10
mA
I(RB)
V(RB)
RB data-retention input current
RB data-retention input voltage(1)
V(RBI) > V(RBI)MIN, VREG25 < VITâ, TA = 85°C
V(RBI) > V(RBI)MIN, VREG25 < VITâ, TA = 25°C
1000 2500
nA
90 220
1.7
V
(1) Specified by design. Not production tested.
SMBus TIMING CHARACTERISTICS
TA = â40°C to 85°C Typical Values at TA = 25°C and VREG25 = 2.5 V (Unless Otherwise Noted)
PARAMETER
TEST CONDITIONS
MIN
f(SMB)
SMBus operating frequency
Slave mode, SMBC 50% duty cycle 10
TYP MAX
100
UNIT
kHz
12
Copyright © 2011, Texas Instruments Incorporated
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