Datasheet

bq34z100
SLUSAU1B –MAY 2012–REVISED DECEMBER 2012 www.ti.com
POWER-ON RESET
T
A
= –40°C to 85°C; Typical Values at TA = 25°C and V
REGIN
= 3.6 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IT+
Positive-going battery voltage 2.05 2.20 2.31 V
input at REG25
V
HYS
Power-on reset hysteresis 45 115 185 mV
LDO REGULATOR
T
A
= 25°C, C
LDO25
= 1.0 µF, V
REGIN
= 3.6 V (unless otherwise noted)
(1)
PARAMETER TEST CONDITION MIN NOM MAX UNIT
V
REG25
Regulator output 2.7 V ≤ V
REGIN
≤ 4.5 V, T
A
= –40°C to 85°C 2.3 2.5 2.7 V
voltage I
OUT
≤ 16 mA
2.45 V ≤ V
REGIN
< 2.7 V T
A
= –40°C to 85°C 2.3
(low battery), I
OUT
≤ 3 mA
I
SHORT
(2)
Short Circuit V
REG25
= 0 V T
A
= –40°C to 85°C 250 mA
Current Limit
(1) LDO output current, I
OUT
, is the sum of internal and external load currents.
(2) Specified by design. Not production tested.
INTERNAL TEMPERATURE SENSOR CHARACTERISTICS
T
A
= –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T
A
= 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
G
TEMP
Temperature sensor voltage gain –2 mV/°C
LOW-FREQUENCY OSCILLATOR
T
A
= –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T
A
= 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
(LOSC)
Operating frequency 32.768 kHz
f
(LEIO)
Frequency error
(1)(2)
TA = 0°C to 60°C –1.5 0.25 1.5 %
TA = –20°C to 70°C –2.5 0.25 2.5 %
TA = –40°C to 85°C –4 0.25 4 %
t
(LSXO)
Start-up time
(3)
500 μs
(1) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, T
A
= 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%.
HIGH-FREQUENCY OSCILLATOR
T
A
= –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T
A
= 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
(OSC)
Operating frequency 8.389 MHz
f
(EIO)
Frequency error
(1)(2)
T
A
= 0°C to 60°C –2 0.38 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 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%.
INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS
T
A
= –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T
A
= 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(SR)
Input voltage range, V
(SRN)
and V
(SRP)
V
(SR)
= V
(SRN)
– V
(SRP)
–0.125 0.125 V
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