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| BQ34Z110 Datasheet, PDF (5/11 Pages) Texas Instruments – Wide Range Fuel Gauge with Impedance Track™ for Lead-Acid Batteries | |||
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www.ti.com
bq34z110
SLUSB55 â JUNE 2012
POWER-ON RESET
TA = â40°C to 85°C; Typical Values at TA = 25°C and VREGIN = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
VIT+
Positive-going battery voltage
input at REG25
2.05
2.20
2.31
V
VHYS
Power-on reset hysteresis
45
115
185
mV
LDO REGULATOR
TA = 25°C, CLDO25 = 1 µF, VREGIN = 3.6 V (unless otherwise noted)(1)
PARAMETER
TEST CONDITION
VREG25
ISHORT (2)
Regulator output
voltage
Short Circuit
Current Limit
2.7 V ⤠VREGIN ⤠4.5 V,
IOUT ⤠16 mA
2.45 V ⤠VREGIN < 2.7 V
(low battery), IOUT ⤠3 mA
VREG25 = 0 V
TA= â40°C to 85°C
TA = â40°C to 85°C
TA = â40°C to 85°C
(1) LDO output current, IOUT, is the sum of internal and external load currents.
(2) Assured by design. Not production tested.
MIN
NOM
MAX UNIT
2.3
2.5
2.7
V
2.3
250
mA
INTERNAL TEMPERATURE SENSOR CHARACTERISTICS
TA = â40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at TA = 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
GTEMP
Temperature sensor voltage gain
â2
mV/°C
LOW-FREQUENCY OSCILLATOR
TA = â40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at TA = 25°C and REG25 = 2.5 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%
0.25%
4%
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%.
HIGH-FREQUENCY OSCILLATOR
TA = â40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at TA = 25°C and REG25 = 2.5 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%
â3%
â4.5%
8.389
0.38%
0.38%
0.38%
2.5
2%
3%
4.5%
5
MHz
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%.
Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s): bq34z110
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