bq24070
bq24071
www.ti.com
SLUS694B–MARCH 2006–REVISED AUGUST 2006
ELECTRICAL CHARACTERISTICS
over junction temperature range (0°C ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
INPUT BIAS CURRENTS
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ICC(SPLY)
Active supply current, VCC
VVCC > VVCC(min)
1
2
2
5
mA
VIN < V(BAT)
2.6 V ≤ VI(BAT)≤ VO(BAT-REG)
Excludes load on OUT pin
Sleep current (current into BAT
pin)
ICC(SLP)
,
VI(AC) ≤ 6V, Total current into IN pin with
ICC(IN-STDBY)
Input standby current
chip disabled, Excludes all loads,
CE=LOW, after t(CE-HOLDOFF) delay
200
µA
Total current into BAT pin with input
present and chip disabled;
Excludes all loads, CE=LOW,
after t(CE-HOLDOFF) delay,
0°C ≤ TJ≤ 85°C
ICC(BAT-STDBY)
BAT standby current
45
1
65
5
IIB(BAT)
Charge done current, BAT
Charge DONE, input supplying the load
OUT PIN-VOLTAGE REGULATION
bq24070
bq24071
V
I(AC)≥ 4.4 V+VDO
I(AC)≥ 6.0 V+VDO
4.4
6.0
4.5
6.3
Output regulation
voltage
VO(OUT-REG)
V
V
OUT PIN – DPPM REGULATION
V(DPPM-SET)
I(DPPM-SET)
SF
DPPM set point(1)
DPPM current source
DPPM scale factor
VDPPM-SET < VOUT
2.6
95
3.8
105
V
Input present
100
µA
V(DPPM-REG)= V(DPPM-SET) × SF
1.139
1.150
1.162
OUT PIN – FET (Q1, Q2) DROP-OUT VOLTAGE ®DS(on)
)
V
I(AC)≥ VCC(min), Mode = High,
V(ACDO)
AC to OUT dropout voltage(2)
300
40
475
100
II(AC) = 1 A, (IO(OUT)+ IO(BAT)), or no input
mV
BAT to OUT dropout voltage
(discharging)
V(BATDO)
VI (BAT)≥ 3 V, Ii(BAT)= 1.0 A, VCC < Vi(BAT)
OUT PIN - BATTERY SUPPLEMENT MODE
Enter battery supplement mode
VI(OUT)
≤ VI(BAT)
– 60 mV
(battery supplements OUT
current in the presence of input
source
VBSUP1
VI(BAT)> 2 V
V
VI(OUT)
≥ VI(BAT)
– 20 mV
VBSUP2
Exit battery supplement mode
VI(BAT)> 2 V
OUT PIN - SHORT CIRCUIT
Current source between BAT to OUT for
short-circuit recovery to
BAT to OUT short-circuit
recovery
IOSH1
10
mA
VI(OUT)≤ VI(BAT) –200 mV
RSHAC
AC to OUT short-circuit limit
VI(OUT) ≤ 1 V
500
Ω
BAT PIN CHARGING – PRECHARGE
Precharge to fast-charge
V(LOWV)
TDGL(F)
IO(PRECHG)
V(PRECHG)
Voltage on BAT
2.9
3
3.1
V
transition threshold
Deglitch time for fast-charge to
precharge transition(3)
tFALL = 100 ns, 10 mV overdrive,
VI(BAT) decreasing below threshold
22.5
ms
1 V < VI(BAT) < V(LOWV), t < t(PRECHG)
IO(PRECHG) = (K(SET) × V(PRECHG))/ RSET
,
Precharge range
10
150
275
mA
mV
Precharge set voltage
1 V < VI(BAT) < V(LOWV), t < t(PRECHG)
225
250
BAT PIN CHARGING - CURRENT REGULATION
Vi (BAT) > V(LOWV), Mode = High
IOUT(BAT) = (K(SET) × V(SET) / RSET),
VI(OUT) > VO(OUT-REG) + V(DO-MAX)
(4)
IO(BAT)
RPBAT
Battery charge current range
BAT to OUT pullup
100
1000
1000
1500
mA
Vi (BAT)< 1 V
Ω
(1) V(DPPM-SET) is scaled up by the scale factor for controlling the output voltage V(DPPM-REG)
.
(2) VDO(max), dropout voltage is a function of the FET, RDS(on), and drain current. The dropout voltage increases proportionally to the
increase in current.
(3) All deglitch periods are a function of the timer setting and is modified in DPPM or thermal regulation modes by the percentages that the
program current is reduced.
(4) When input current remains below 2 A, the battery charging current may be raised until the thermal regulation limits the charge current.
4
Submit Documentation Feedback
TI [ TEXAS INSTRUMENTS ]
