BQ29330 Datasheet, PDF (8/26 Pages) Texas Instruments – 2-,3-,AND 4-CELL LITHIUM-ION OR LITHIUM-POLYMER BATTERY PROTECTION AFE

bq29330
SLUS673A – SEPTEMBER 2005 – REVISED DECEMBER 2005
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ELECTRICAL CHARACTERISTICS (Continued)
CELL VOLTAGE MONITOR, T_A = 25°C, CREG = 1 µF, C_L = 2.2 µF, VCC or BAT = 14 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
V_(CELLOUT)
REF
PACK
CELL output
V_Cn– V_Cn+1 = 0 V, 8 V ≤ VDD ≤ 25 V
V_Cn– V_Cn+1 = 4.5 V, 8 V ≤ VDD ≤ 25 V
Mode ⁽¹⁾, 8 V ≤ VDD ≤ 25 V
Mode
[Register Address = 0x03, b1(PACK) = 1, b0( VMEN) = 1]
0.950
0.275
–1%
–2%
BAT
Mode
[Register Address = 0X03, b6(BAT) = 1, b0 ( VMEN) = 1]
–2%
CMRR
Common mode rejection
CELL max to CELL min
40
V_(CELLSLEW)
CELL output rise
K
CELL scale factor
Min to Max 10% to 90%
K = {CELL output (VC5 = 0 V, VC4 = 4.5 V)
– CELL output (VC5 = VC4 = 0 V)} / 4.5
K = {CELL output (VC2 = 13.5 V, VC1 = 18 V)
– CELL output (VC2 = VC1 = 13.5 V)} / 4.5
9
0.147
0.147
I_(VCELLOUT)
Drive current
V_Cn– V_Cn+1 = 0 V , Vcell = 0 V, T_A = –40° to 110°
12
V_ICR
CELL output offset error
CELL output (VC2 = 18 V, VC1 = 18 V)
–CELL output (VC2 = VC1 = 0 V)
R_(BAL)
Cell balance internal resistance R_DS(ON) for internal FET switch at V_DS = 2 V
–50%
TYP
0.975
0.3
0.975
PACK/18
MAX
1
0.325
1%
2%
BAT/18
2%
0.150 0.153
0.150
18
–1
400
0.153
50%
UNIT
V
V
V
V
dB
ms
µA
mV
Ω
(1) Register Address = 0x04, b2(CAL0) = b3(CAL1) = 1, Register Address = 0x03, b0(VMEN) = 1
CURRENT PROTECTION DETECTION, T_A = 25°C, CREG = 1 µF, C_L = 2.2 µF, VCC or BAT = 14 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
RSNS = 0
50
V_(OLT)
OL detection threshold voltage range, typical⁽¹⁾
RSNS = 1
25
RSNS = 0
5
∆V_(OLT)
OL detection threshold voltage program step
RSNS = 1
2.5
V_(SCCT)
∆V_(SCCT)
SCC detection threshold voltage range, typical
(2)
SCC detection threshold voltage program step
RSNS = 0
RSNS = 1
RSNS = 0
RSNS = 1
RSNS is set in
FUNCTION_CTL register
100
50
25
12.5
V_(SCDT)
SCD detection threshold voltage range,
typical ⁽³⁾
RSNS = 0
RSNS = 1
–100
–50
∆V_(SCDT)
RSNS = 0
SCD detection threshold voltage program step
RSNS = 1
–25
–12.5
V_OL(acr)
OL detection threshold voltage accuracy⁽¹⁾
V_{(SCC_acr)} SCC detection threshold voltage accuracy⁽²⁾
V_{(SCD_acr)} SCD detection threshold voltage accuracy⁽³⁾
V_OL = 25 mV (min)
V_OL = 100 mV (RSNS = 0,1)
V_OL = 205 mV (max)
V_SCC = 50 mV (min)
V_SCC = 200 mV (RSNS = 0,1)
V_SCC = 475 mV (max)
V_SCC = –50 mV (min)
V_SCC = –200 mV (RSNS = 0,1)
V_SCC = –475 mV (max)
15
90
185
–30
–180
–428
30
180
426
25
100
205
–50
–200
–475
50
200
475
MAX
205
102.5
475
237.5
–475
–237.5
35
110
225
70
–220
–523
70
220
523
UNIT
mV
mV
mV
mV
mV
mV
mV
mV
mV
(1) See OLV register for setting detection threshold
(2) See SCC register for setting detection threshold
(3) See SCD register for setting detection threshold
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