Datasheet

bq20z75-V180
www.ti.com SLUSA22 –DECEMBER 2009
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted), T
A
= –40°C to 85°C, V
REG25
= 2.41 V to 2.59 V, V
BAT
=
14V, C
REG25
= 1µF, C
REG33
= 2.2µF; typical values at T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
VCELL+OU
VC(n) – VC(n+1) = 0V; VCELL+ =
Drive Current to VCELL+ capacitor 12 18 μA
T
0V; T
A
= –40°C to 100°C
CELL output (VC2 = VC1 = 18V) –
V
VCELL+O
CELL offset error –18 –1 18 mV
CELL output (VC2 = VC1 = 0V)
I
VCnL
VC(n) pin leakage current VC1, VC2, VC3, VC4, VC5 = 3V –1 0.01 1 μA
CELL BALANCING
R
DS(on)
for internal FET switch at V
DS
R
BAL
internal cell balancing FET resistance 200 400 600 Ω
= 2V; T
A
= 25°C
HARDWARE SHORT CIRCUIT AND OVERLOAD PROTECTION; T
A
= 25°C (unless otherwise noted)
V
OL
= 25mV (min) 15 25 35
V
(OL)
OL detection threshold voltage accuracy V
OL
= 100mV; RSNS = 0, 1 90 100 110 mV
V
OL
= 205mV (max) 185 205 225
V
SCC
= 50mV (min) 30 50 70
SCC detection threshold voltage
V
(SCC)
V
SCC
= 200mV; RSNS = 0, 1 180 200 220 mV
accuracy
V
SCC
= 475mV (max) 428 475 523
V
SCD
= –50mV (min) –30 –50 –70
SCD detection threshold voltage
V
(SCD)
V
SCD
= –200mV; RSNS = 0, 1 –180 –200 –220 mV
accuracy
V
SCD
= –475mV (max) –428 –475 –523
t
da
Delay time accuracy ±15.25 μs
t
pd
Protection circuit propagation delay 50 μs
FET DRIVE CIRCUIT; T
A
= 25°C (unless otherwise noted)
V
DSGON
= V
DSG
– V
PACK
; V
GS
=
V
DSGON
DSG pin output on voltage 10MΩ;DSG and CHG on; T
A
= 8 12 16 V
–40°C to 100°C
V
CHGON
= V
CHG
– V
BAT
; V
GS
=
V
CHGON
CHG pin output on voltage 10MΩ;DSG and CHG on; T
A
= 8 12 16 V
–40°C to 100°C
V
DSGOFF
DSG pin output off voltage V
DSGOFF
= V
DSG
– V
PACK
0.2 V
V
CHGOFF
CHG pin output off voltage V
CHGOFF
= V
CHG
– V
BAT
0.2 V
C
L
=4700pF; V
PACK
≤ DSG ≤V
PACK
+
400 1000
4V
t
R
Rise time μs
C
L
=4700pF; V
BAT
≤ CHG ≤V
BAT
+ 4V 400 1000
C
L
=4700pF; V
PACK
+ V
DSGON
≤ DSG
40 200
≤V
PACK
+ 1V
t
F
Fall time μs
C
L
=4700pF; V
BAT
+ V
CHGON
≤ CHG
40 200
≤V
BAT
+ 1V
V
ZVCHG
ZVCHG clamp voltage BAT = 4.5V 3.3 3.5 3.7 V
LOGIC; T
A
= –40°C to 100°C (unless otherwise noted)
ALERT 60 100 200
R
PULLUP
Internal pullup resistance kΩ
RESET 1 3 6
ALERT 0.2
RESET; V
BAT
= 7V; V
REG25
= 1.5V; I
V
OL
Logic low output voltage level 0.4 V
RESET
= 200μA
GPOD; I
GPOD
= 50μA 0.6
LOGIC SMBC, SMBD, PFIN, PRES, SAFE, ALERT
V
IH
High-level input voltage 2.0 V
V
IL
Low-level input voltage 0.8 V
Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Link(s): bq20z75-V180