BQ40Z50 Datasheet, PDF (17/30 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq40z50
www.ti.com
SLUSBS8 – DECEMBER 2013
Typical values stated where T_A = 25°C and VCC = 14.4 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
t_SCD1
SCD1 detection ^{AFE PROTECTION CONTROL[SCDDx2] = 0}
delay time
AFE PROTECTION CONTROL[SCDDx2] = 1
0
0
915
µs
1850
Δt_SCD1
SCD1 detection
delay time
program step
AFE PROTECTION CONTROL[SCDDx2] = 0
AFE PROTECTION CONTROL[SCDDx2] = 1
61
µs
121
t_SCD2
SCD2 detection ^{AFE PROTECTION CONTROL[SCDDx2] = 0}
delay time
AFE PROTECTION CONTROL[SCDDx2] = 1
0
0
458
µs
915
Δt_SCD2
SCD2 detection
delay time
program step
AFE PROTECTION CONTROL[SCDDx2] = 0
AFE PROTECTION CONTROL[SCDDx2] = 1
30.5
µs
61
t_DETECT
Current fault
detect time
V_SRP – V_SRN = V_T – 3 mV for OCD, SCD1, and SC2,
V_SRP – V_SRN = V_T + 3 mV for SCC
Current fault
t_ACC
delay time
Max delay setting
–10
accuracy
160
µs
10
%
SMBus
Typical values stated where T_A = 25°C and VCC = 14.4 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
f_SMB
SMBus operating
frequency
SLAVE mode, SMBC 50% duty cycle
10
f_MAS
SMBus master clock
frequency
MASTER mode, no clock low slave extend
t_BUF
Bus free time between start
and stop
4.7
t_HD(START)
Hold time after (repeated)
start
4.0
t_SU(START)
Repeated start setup time
4.7
t_SU(STOP)
Stop setup time
4.0
t_HD(DATA)
Data hold time
300
t_SU(DATA)
Data setup time
250
t_TIMEOUT
Error signal detect time
25
t_LOW
Clock low period
4.7
t_HIGH
Clock high period
4.0
t_R
Clock rise time
10% to 90%
t_F
Clock fall time
90% to 10%
t_LOW(SEXT)
Cumulative clock low slave
extend time
t_LOW(MEXT)
Cumulative clock low
master extend time
TYP
MAX
UNIT
100
kHz
51.2
kHz
µs
µs
µs
µs
ns
ns
35
ms
µs
50
µs
1000
ns
300
ns
25
ms
10
ms
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: bq40z50
Submit Documentation Feedback
17