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BQ24071RHLR Datasheet(PDF) 6 Page - Texas Instruments

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Part # BQ24071RHLR
Description  SINGLE-CHIP LI-ION CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ24071RHLR Datasheet(HTML) 6 Page - Texas Instruments

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bq24070
bq24071
SLUS694B – MARCH 2006 – REVISED AUGUST 2006
ELECTRICAL CHARACTERISTICS (continued)
over junction temperature range (0°C
≤ T
J ≤ 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IIL
Low-level input current, Mode
–1
µA
TIMERS
K(TMR)
Timer set factor
t(CHG) = K(TMR) × R(TMR)
0.313
0.360
0.414
s/
R(TMR)(9)
External resistor limits
30
100
k
t(PRECHG)
Precharge timer
0.09 × t(CHG)
0.10 × t(CHG) 0.11 × t(CHG)
s
Timer fault recovery pullup from
I(FAULT)
1
k
OUT to BAT
CHARGER SLEEP THRESHOLDS (PG THRESHOLDS, LOW
→ POWER GOOD)
VVCC
V(UVLO)≤ VI(BAT)≤ VO(BAT-REG),
V(SLPENT)(10)
Sleep-mode entry threshold
VI(BAT)
No t(BOOT-UP) delay
+125 mV
V
VVCC
V(UVLO)≤ VI(BAT)≤ VO(BAT-REG),
V(SLPEXIT)(10)
Sleep-mode exit threshold
VI(BAT)
No t(BOOT-UP) delay
+190 mV
R(TMR) = 50 kΩ,
t(DEGL)
Deglitch time for sleep mode(11)
V(IN) decreasing below threshold, 100-ns
22.5
ms
fall time, 10-mv overdrive
START-UP CONTROL BOOT-UP
On the first application of input with
t(BOOT-UP)
Boot-up time
120
150
180
ms
Mode Low
SWITCHING POWER SOURCE TIMING
When input applied. Measure from:
Switching power source from
[PG: Lo
→ Hi to I
(IN) > 5 mA],
tSW-BAT
50
µs
input to battery
I(OUT) = 100 mA,
RTRM = 50 K
THERMAL SHUTDOWN REGULATION(12)
T(SHTDWN)
Temperature trip
TJ (Q1 and Q3 only)
155
Thermal hysteresis
TJ (Q1 and Q3 only)
30
°C
TJ(REG)
Temperature regulation limit
TJ (Q2)
115
135
UVLO
V(UVLO)
Undervoltage lockout
Decreasing VCC
2.45
2.50
2.65
V
Hysteresis
27
mV
(9)
To disable the safety timer and charge termination, tie TMR to the VREF pin.
(10) The IC is considered in sleep mode when IN is absent (PG = OPEN DRAIN).
(11) Does not declare sleep mode until after the deglitch time and implement the needed power transfer immediately according to the
switching specification.
(12) Reaching thermal regulation reduces the charging current. Battery supplement current is not restricted by either thermal regulation or
shutdown. Input power FETs turn off during thermal shutdown. The battery FET is only protected by a short-circuit limit which typically
does not cause a thermal shutdown (input FETs turning off) by itself.
6
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