BQ3050 Datasheet, PDF (11/28 Pages) Texas Instruments – 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq3050
www.ti.com
SLUSA92A – JANUARY 2011 – REVISED JUNE 2011
ELECTRICAL CHARACTERISTICS: TS1, TS2 (continued)
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input voltage range
TS1 – VSS, TS2 – VSS
V_IN
Conversion Time
Resolution (no missing codes)
–0.20
16
0.8 ×
V_REG25
V
16
ms
Bits
Effective resolution
11
12
Bits
ELECTRICAL CHARACTERISTICS: Internal Temperature Sensor
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Temperature sensor voltage
–1.9
–2.0
–2.1
mV/°C
V_(TEMP)
Conversion Time
Resolution (no missing codes)
16
ms
16
Bits
Effective resolution
11
12
Bits
ELECTRICAL CHARACTERISTICS: Internal Thermal Shutdown
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
T_MAX1
T_MAX2
T_RECOVER
t_PROTECT
Maximum PCHG temperature
Maximum REG33 temperature
Recovery hysteresis temperature
Protection time
110
150
°C
125
175
10
°C
5
µs
ELECTRICAL CHARACTERISTICS: High Frequency Oscillator
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
f_(OSC)
f_(EIO)
t_(SXO)
Operating frequency of CPU Clock
Frequency error⁽¹⁾⁽²⁾
Start-up time⁽³⁾
T_A = –20°C to 70°C
T_A = –40°C to 85°C
T_A = –25°C to 85°C
4.194
–2%
±0.25%
2%
–3%
±0.25%
3%
3
6
MHz
ms
(1) The frequency error is measured from 4.194 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at V_REG25 = 2.5V, T_A = 25°C.
(3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% when the device is already powered.
ELECTRICAL CHARACTERISTICS: Low Frequency Oscillator
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 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⁾
T_A = –20°C to 70°C
T_A = –40°C to 85°C
T_A = –25°C to 85°C
32.768
kHz
–1.5%
±0.25%
1.5%
–2.5%
±0.25%
2.5%
100
μs
(1) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5V, 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%.
Copyright © 2011, Texas Instruments Incorporated
11