Datasheet

ELECTRICAL CHARACTERISTICS
bq77PL900
SLUS844B – JUNE 2008 – REVISED JANUARY 2009 ...................................................................................................................................................... www.ti.com
BAT = PACK = 7 V to 50 V, T
A
= – 25 ° C to 85 ° C, typical values stated where T
A
= 25 ° C and BAT = PACK = 36 V (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
No load at REG1, REG2, TOUT, SCLK, SDIN, T
A
= 25 ° C 450 550
XALERT, CELLAMP, CURRENTAMP = off
CHG, DSG = on, cell balance = off,
I
CC1
Supply current 1 µ A
T
A
= – 40 ° C to
600
I
REG1
= I
REG2
= 0 mA,
100 ° C
Charge pump = off
(1)
, BAT = PACK = 35 V
No load at REG1, REG2, TOUT, SCLK, SDIN, T
A
= 25 ° C 650 750
XALERT, CELLAMP, CURRENTAMP = on,
CHG, DSG = on,
I
CC2
Supply current 2 µ A
T
A
= – 40 ° C to
800
Cell balance = off, IREG1 = IREG2 = 0 mA,
100 ° C
Charge pump = off, BAT = PACK = 35 V
T
A
= 25 ° C 0.1 1.2
CHG, DSG = off, VREG1 = VREG2 = off,
I
SHUTDOWN
Shutdown mode µ A
T
A
= – 40 ° C to
PACK = 0 V, BAT = 35 V
2
100 ° C
VREG1, INTEGRATED 5-V LDO
8.5 V < PACK or BAT ≤ 50 V, I
OUT
≤ 25 mA 4.55 5 5.45
T
A
= – 40 ° C to
V
(REG1)
Output voltage V
100 ° C
7 V < PACK or BAT ≤ 8.5 V, I
OUT
≤ 3 mA 4.55 5 5.45
Δ V
(REG1)
Output temperature drift PACK or BAT = 50 V, I
OUT
= 2 mA T
A
= 25 ° C ± 0.2%
Δ V
(REG1LINE)
Line regulation 10 V ≤ PACK or BAT ≤ 50 V, I
OUT
= 2 mA T
A
= 25 ° C 10 20 mV
PACK or BAT = 36 V, 0.2 mA ≤ I
OUT
≤ 2 mA 7 15
Δ V
(REG1LOAD)
Load regulation T
A
= 25 ° C mV
PACK or BAT = 36 V, 0.2 mA ≤ I
OUT
≤ 25 mA 40 100
PACK or BAT = 36 V, VREG1 = 4.5 V 35 75 125
IREG1MAX Current limit T
A
= 25 ° C mA
PACK or BAT = 36 V, VREG1 = 0 V 5 20 35
VREG2, INTEGRATED 3.3-V LDO
8.5 V < PACK or BAT ≤ 50 V, I
OUT
≤ 25 mA 3.05 3.3 3.55
T
A
= – 40 ° C to
V
(REG2)
Output voltage 7 V < PACK or BAT ≤ 8.5 V, I
OUT
≤ 10 mA 3.05 3.3 3.55 V
100 ° C
7 V < PACK or BAT ≤ 50 V, I
OUT
= 0.2 mA – 2% 3.3 2%
T
A
= – 40 ° C to
Output temperature drift PACK or BAT = 50 V, I
OUT
= 2 mA ± 0.2%
100 ° C
Line regulation 7 V ≤ PACK or BAT ≤ 50 V, I
OUT
= 2 mA T
A
= 25 ° C 10 20 mV
Δ V
(REG2)
PACK or BAT = 36 V, 0.2 mA ≤ I
OUT
≤ 2 mA 7 15
Load regulation T
A
= 25 ° C mV
PACK or BAT = 36 V, 0.2 mA ≤ I
OUT
≤ 25 mA 40 100
PACK or BAT = 36 V, VREG2 = 3 V 25 50 100
I
REG2MAX
Current limit T
A
= 25 ° C mA
PACK or BAT = 36 V, VREG2 = 0 V 10 20 30
TOUT, THERMISTOR POWER SUPPLY
T
A
= – 40 ° C to
V
TOUT
I
OUT
= 0 mA 3.05 3.55 V
100 ° C
Pass-element series I
OUT
= – 1 mA at TOUT pin, I
reg2
= – 0.2 mA T
A
= – 40 ° C to
RDS
(ON)
50 100 Ω
resistance RDS
(ON)
= (V
REG2
– V
TOUT
)/1 mA 100 ° C
Thermistor sense
V
TINS
T
A
= – 40 ° C to 100 ° C – 5% 0.975 5% V
voltage
Thermistor sense
V
TINSHYS
T
A
= – 40 ° C to 100 ° C 50 100 150 mV
hysteresis voltage
THERMAL SHUTDOWN
T
therm
Shutdown threshold PACK or BAT = 36 V
(2)
150 ° C
PMS, PRECHARGE MODE SELECT DISABLE
PMS disable threshold of
V
PMSDISABLE
PACK = PMS = 20 V, VREG2 = 0 V, CHG = ON → OFF 8 13 16 V
BAT
POR, POWER-ON RESET
VLOG = VREG1(5 V) V 3.85 4.05 4.25
Negative-going voltage
V
POR –
V
input
VLOG = VREG2(3.3 V) V 2.45 2.65 2.8
(1) Charge pump starts working when (I
REG33
+ I
REG5
) > 3 mA.
(2) Not 100% tested, assured by design up to 125 ° C
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