BQ27510_08 Datasheet, PDF (4/36 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection

bq27510
SLUS816A – MARCH 2008 – REVISED JUNE 2008.......................................................................................................................................................... www.ti.com
2.5 V LDO REGULATOR⁽¹⁾
T_A = –40°C to 85°C, C_REG = 0.47 µF, 2.45 V < V_REGIN = V_BAT < 5.5 V; typical values at T_A = 25°C and V_REGIN = V_BAT = 3.6 V
(unless otherwise noted)
V_REG25
V_DO
ΔV_REGTEMP
ΔV_REGLINE
ΔV_REGLOAD
I_SHORT ⁽²⁾
PARAMETER
Regulator output voltage
Regulator dropout voltage
Regulator output change
with temperature
Line regulation
Load regulation
Short circuit current limit
TEST CONDITION
2.7 V ≤ V_REGIN ≤ 5.5 V,
I_OUT ≤ 16mA
T_A = –40°C to 85°C
2.45 V ≤ V_REGIN < 2.7 V (low T_A = –40°C to 85°C
battery), I_OUT ≤ 3mA
2.7 V, I_OUT ≤ 16 mA
T_A = –40°C to 85°C
2.45 V, I_OUT ≤ 3 mA
V_REGIN = 3.6 V,
I_OUT = 16 mA
T_A = –40°C to 85°C
2.7 V ≤ V_REGIN ≤ 5.5 V, I_OUT = 16 mA
0.2 mA ≤ I_OUT ≤ 3 mA, V_REGIN = 2.45 V
3 mA ≤ I_OUT ≤ 16 mA, V_REGIN = 2.7 V
V_REG25 = 0 V,
T_A = –40°C to 85°C
MIN NOM MAX UNIT
2.42 2.48 2.57
V
2.40
V
0.3%
280 mV
50
11
25 mV
34
40 mV
31
250 mA
(1) LDO output current, IOUT, is the sum of internal and external load currents.
(2) Assured by design. Not production tested.
INTERNAL TEMPERATURE SENSOR CHARACTERISTICS
T_A = –40°C to 85°C, C_REG = 0.47µF, 2.45 V < V_REGIN = V_BAT < 5.5 V; typical values at T_A = 25°C and V_REGIN = V_BAT = 3.6 V
(unless otherwise noted)
G_TEMP
PARAMETER
Temperature sensor voltage gain
TEST CONDITIONS
MIN TYP MAX UNIT
–2
mV/°C
HIGH FREQUENCY OSCILLATOR
T_A = –40°C to 85°C, C_REG = 0.47µF, 2.45 V < V_REGIN = V_BAT < 5.5 V; typical values at T_A = 25°C and V_REGIN = V_BAT = 3.6 V
(unless otherwise noted)
f_OSC
f_EIO
t_SXO
PARAMETER
Operating frequency
Frequency error^{(1) (2)}
Start-up time⁽³⁾
TEST CONDITIONS
T_A = 0°C to 60°C
T_A = –20°C to 70°C
T_A = –40°C to 85°C
MIN
–2.0%
–3.0%
-4.5%
TYP
2.097
0.38%
0.38%
0.38%
2.5
MAX
2.0%
3.0%
4.5%
5
UNIT
MHz
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 startup time is defined as the time it takes for the oscillator output frequency to be ±3% of typical oscillator frequency.
4
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