Datasheet

bq20z75-V180
SLUSA22 –DECEMBER 2009 www.ti.com
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
V
hys
Hysteresis V
IT+
– V
IT–
50 150 250 mV
active low time after power up or
t
RST
RESET active low time 100 250 560 µs
watchdog reset
WATCHDOG TIMER
t
WDTINT
Watchdog start up detect time 250 500 1000 ms
t
WDWT
Watchdog detect time 50 100 150 µs
2.5V LDO; I
REG33OUT
= 0mA; T
A
= 25°C (unless otherwise noted)
4.5 < VCC or BAT < 25V; I
REG25OUT
V
REG25
Regulator output voltage 2.41 2.5 2.59 V
≤16mA; T
A
= –40°C to 100°C
ΔV
REG25
Regulator output change with I
REG25OUT
= 2mA; T
A
= –40°C to
±0.2 %
TEMP
temperature 100°C
ΔV
REG25L
5.4 < VCC or BAT < 25V; I
REG25OUT
Line regulation 3 10 mV
INE
= 2mA
0.2mA ≤ I
REG25OUT
≤ 2mA 7 25
ΔV
REG25L
Load Regulation mV
OAD
0.2mA ≤ I
REG25OUT
≤ 16mA 15 50
I
REG25MA
drawing current until REG25 = 2V to
Current Limit 5 40 75 mA
X
0V
3.3V LDO; I
REG25OUT
= 0mA; T
A
= 25°C (unless otherwise noted)
4.5 < VCC or BAT < 25V; I
REG33OUT
V
REG33
Regulator output voltage 3 3.3 3.6 V
≤ 25mA; T
A
= –40°C to 100°C
ΔV
REG33
Regulator output change with I
REG33OUT
= 2mA; T
A
= –40°C to
±0.2 %
TEMP
temperature 100°C
ΔV
REG33L
5.4 < VCC or BAT < 25V; I
REG33OUT
Line regulation 3 17 mV
INE
= 2mA
0.2mA ≤ I
REG33OUT
≤ 2mA 7 17
ΔV
REG33L
Load Regulation mV
OAD
0.2mA ≤ I
REG33OUT
≤ 25mA 40 100
drawing current until REG33 = 3V 25 100 145
I
REG33MA
Current Limit mA
X
short REG33 to VSS, REG33 = 0V 12 65
THERMISTOR DRIVE
V
TOUT
Output voltage I
TOUT
= 0mA; T
A
= 25°C V
REG25
V
I
TOUT
= 1mA; R
DS(ON)
= (V
REG25
–
R
DS(ON)
TOUT pass element resistance 50 100 Ω
V
TOUT
) / 1mA; T
A
= –40°C to 100°C
VCELL+ HIGH VOLTAGE TRANSLATION
VC(n) – VC(n+1) = 0V; T
A
= –40°C
0.950 0.975 1
to 100°C
V
VCELL+O
UT
VC(n) – VC(n+1) = 4.5V; T
A
= –40°C
0.275 0.3 0.375
to 100°C
V
VCELL+R
internal AFE reference voltage ; T
A
=
Translation output 0.965 0.975 0.985 V
EF
–40°C to 100°C
V
VCELL+P
Voltage at PACK pin; T
A
= –40°C to 0.98*V
PAC
1.02*V
PA
V
PACK
/18
ACK
100°C
K
/18
CK
/18
V
VCELL+B
Voltage at BAT pin; T
A
= –40°C to 0.98*V
BAT
/ 1.02*V
BA
V
BAT
/18
AT
100°C 18
T
/18
CMMR Common mode rejection ratio VCELL+ 40 dB
K= {VCELL+ output (VC5=0V;
VC4=4.5V) – VCELL+ output 0.147 0.150 0.153
(VC5=0V; VC4=0V)}/4.5
K Cell scale factor
K= {VCELL+ output (VC2=13.5V;
VC1=18V) – VCELL+ output 0.147 0.150 0.153
(VC5=13.5V; VC1=13.5V)}/4.5
6 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): bq20z75-V180