BQ3050 Datasheet, PDF (12/28 Pages) Texas Instruments – 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq3050
SLUSA92A – JANUARY 2011 – REVISED JUNE 2011
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ELECTRICAL CHARACTERISTICS: Internal Voltage Reference
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
V_REF
V_{REF_DRIFT}
Internal Reference Voltage
Internal Reference Voltage Drift
T_A = –25°C to 85°C
T_A = 0°C to 60°C
1.215
1.225
±80
±50
1.230
V
PPM/°C
PPM/°C
ELECTRICAL CHARACTERISTICS: Flash
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 ⁽¹⁾
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Data retention
10
Years
Data Flash
20k
Flash programming write-cycles
Instruction Flash
1k
Cycles
Cycles
I_{CC(PROG_DF)} Data Flash-write supply current
I_{CC(ERASE_DF)} Data Flash-erase supply current
T_A = –40°C to 85°C
T_A = –40°C to 85°C
3
4
mA
3
18
mA
(1) Verified by design. Not production tested.
ELECTRICAL CHARACTERISTICS: OCD Current Protection
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
V_(OCD)
OCD detection threshold voltage ^{RSNS = 0}
range, typical
RSNS = 1
50
200
mV
25
100
mV
ΔV_(OCDT)
OCD detection threshold voltage ^{RSNS = 0}
program step
RSNS = 1
10
mV
5
mV
V_(OFFSET)
OCD offset
–10
V_{(Scale_Err)}
OCD scale error
–10
t_(OCDD)
Over Current in Discharge Delay
1
t_{(OCDD_STEP)} OCDD Step options
2
t_(DETECT)
Current fault detect time
VSRP – SRN = VTHRESH + 12.5 mV
t_ACC
Over Current and Short Circuit
delay time accuracy
Accuracy of typical delay time
–20
10
mV
10
%
31
ms
ms
160
µs
20
%
ELECTRICAL CHARACTERISTICS: SCD1 Current Protection
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
V_(SDC1)
SCD1 detection threshold
voltage range, typical
RSNS = 0
RSNS = 1
100
450
mV
50
225
mV
ΔV_(SCD1T)
SCD1 detection threshold
voltage program step
RSNS = 0
RSNS = 1
50
mV
25
mV
V_(OFFSET)
SCD1 offset
–10
V_{(Scale_Err)}
SCD1 scale error
–10
AFE.STATE_CNTL[SCDDx2] = 0
0
t_(SCD1D)
Short Circuit in Discharge Delay
AFE.STATE_CNTL[SCDDx2] = 1
0
10
mV
10
%
915
µs
1830
µs
AFE.STATE_CNTL[SCDDx2] = 0
61
µs
t_{(SCD1D_STEP)} SCD1D Step options
AFE.STATE_CNTL[SCDDx2] = 1
122
µs
t_(DETECT)
Current fault detect time
VSRP – SRN = VTHRESH + 12.5 mV
160
µs
12
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