Datasheet

bq20z95
www.ti.com SLUS757C –JULY 2007–REVISED OCTOBER 2013
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
PARAMETER PIN MIN NOM MAX UNIT
V
SS
Supply voltage VCC, VBAT 4.5 25 V
V
(STARTUP)
Minimum startup voltage VCC, BAT, PACK 5.5 V
VC(n) – VC(n+1); n = 1,2,3,4 0 5 V
VC1, VC2, VC3, VC4 0 V
SUP
V
V
IN
Input Voltage Range VC5 0 0.5 V
ASRN, ASRP –0.5 0.5 V
PACK, PMS 0 25 V
V
(GPOD)
Output Voltage Range GPOD 0 25 V
A
(GPOD)
Drain Current
(1)
GPOD 1 mA
C
(REG25)
2.5-V LDO Capacitor REG25 1 µF
C
(REG33)
3.3-V LDO Capacitor REG33 2.2 µF
C
(VCELL+)
Cell Voltage Output Capacitor VCELL+ 0.1 µF
C
(PACK)
PACK input block resistor
(2)
PACK 1 kΩ
(1) Use an external resistor to limit the current to GPOD to 1mA in high voltage application.
(2) Use an external resistor to limit the inrush current PACK pin required.
ELECTRICAL CHARACTERISTICS
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)
=
14 V, C
(REG25)
= 1 µF, C
(REG33)
= 2.2 µF; typical values at T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
I
(NORMAL)
Firmware running 550 µA
SLEEP Mode CHG FET on; DSG FET on 124 µA
I
(SLEEP)
CHG FET off; DSG FET on 90 µA
CHG FET off; DSG FET off 52 µA
I
(SHUTDOWN)
SHUTDOWN Mode 0.1 1 µA
SHUTDOWN WAKE; T
A
= 25°C (unless otherwise noted)
I
(PACK)
Shutdown exit at V
STARTUP
threshold 1 µA
SRx WAKE FROM SLEEP; T
A
= 25°C (unless otherwise noted)
Positive or negative wake threshold
V
(WAKE)
with 1.00 mV, 2.25 mV, 4.5 mV and 1.25 10 mV
9 mV programmable options
V
(WAKE)
= 1 mV;
-0.7 0.7
I
(WAKE)
= 0, RSNS1 = 0, RSNS0 = 1
V
(WAKE)
= 2.25 mV;
I
(WAKE
) = 1, RSNS1 = 0, RSNS0 = 1; -0.8 0.8
I
(WAKE)
= 0, RSNS1 = 1, RSNS0 = 0
V
(WAKE_ACR)
Accuracy of V
(WAKE)
mV
V
(WAKE)
= 4.5 mV;
I
(WAKE)
= 1, RSNS1 = 1, RSNS0 = 1; –1.0 1.0
I
(WAKE)
= 0, RSNS1 = 1, RSNS0 = 0
V
(WAKE)
= 9 mV;
–1.4 1.4
I
(WAKE)
= 1, RSNS1 = 1, RSNS0 = 1
Temperature drift of V
(WAKE)
V
(WAKE_TCO)
0.5 %/°C
accuracy
Time from application of current and
t
(WAKE)
1 10 ms
wake of bq20z95
POWER-ON RESET
V
IT–
Negative-going voltage input Voltage at REG25 pin 1.70 1.80 1.90 V
V
hys
Hysteresis V
IT+
– V
IT–
50 150 250 mV
t
RST
RESET active low time Active low time after power up or watchdog reset 100 250 560 µs
WATCHDOG TIMER
t
WDTINT
Watchdog start up detect time 250 500 1000 ms
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