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| BQ24072T_1 Datasheet, PDF (5/34 Pages) Texas Instruments – 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC | |||
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www.ti.com
bq24072T
bq24075T, bq24079T
SLUS937A â DECEMBER 2009 â REVISED APRIL 2010
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range (0°C < TJ < 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
MAX UNIT
tDGL(SC2)
Deglitch time, supplement mode short
circuit
250
ms
tREC(SC2)
Recovery time, supplement mode short
circuit
60
ms
BATTERY CHARGER
IBAT(SC)
Source current for BAT pin short-circuit
detection
4
7.5
11 mA
VBAT(SC)
VBAT(REG)
BAT pin short-circuit detection threshold
Battery charge voltage
bq24072T, bq24075T
bq24079T
1.6
4.16
4.059
1.8
4.20
4.100
2.0 V
4.24
V
4.141
VLOWV
Pre-charge to fast-charge transition
threshold
2.9
3
3.1 V
tDGL1(LOW
V)
tDGL2(LOW
V)
Deglitch time on pre-charge to
fast-charge transition
Deglitch time on fast-charge to
pre-charge transition
ICHG
Battery fast charge current range
VBAT(REG) > VBAT > VLOWV, VIN = 5V, CE = LO, EN1= LO, EN2 =
HI
25
ms
25
ms
300
1500 mA
ICHG
Battery fast charge current
CE = LO, EN1= LO, EN2 = HI, VBAT > VLOWV,
VIN = 5V, IIN-MAX > ICHG, no load on OUT pin, thermal loop not
active, DPM loop not active
KISET/RISET
A
KISET
IPRECHG
kPRECHG
Fast charge current factor
Pre-charge current
Pre-charge current factor
ITERM
Charge current value for termination
detection threshold
CE = LO, (EN1,EN2)â (LO,LO),
VBAT > VRCH, t < tMAXCH, VIN = 5V, DPM loop not active, thermal
loop not active
CE = LO, (EN1,EN2)=(LO,LO),
VBAT > VRCH, t < tMAXCH, VIN = 5V, DPM loop not active, thermal
loop not active
797
890
KPRECHG /RISET
70
88
975 AΩ
A
106
0.09ÃICH 0.1ÃICH 0.11ÃICH
G
G
G
0.027ÃIC .033ÃIC 0.040ÃIC
HG
HG
HG
tDGL(TERM Deglitch time, termination detected
)
VRCH
Recharge detection threshold
25
VO(REG)
â140mV
VO(REG)
â100m
V
ms
VO(REG)
â60mV
V
tDGL(RCH)
Deglitch time, recharge threshold
detected
62.5
ms
tDGL(NO-
IN)
Delay time, input power loss to charger
turn-off
IBAT(DET) Sink current for battery detection
tDET
Battery detection timer
BATTERY CHARGING TIMERS
VBAT = 3.6V. Time measured from VIN:
5V â 3.3V 1ms fall-time
20
5
7.5
250
ms
10 mA
ms
tPRECHG
tMAXCH
tPRECHG
Pre-charge safety timer value
TMR = floating
Charge safety timer value
TMR = floating
Pre-charge safety timer value(externally
set)
18k⦠< RTMR < 72kâ¦
1440 1800
14400 18000
2160 s
21600 s
RTMR x KTMR
s
tMAXCH
Charge safety timer value (externally
set)
18k⦠< RTMR < 72kΩ
10 x RTMR x KTMR
s
KTMR
Timer factor
BATTERY â PACK NTC MONITOR
35
45
55 s / kâ¦
VHOT
High temperature trip point
VHYS(HOT) Hysteresis on high trip point
VCOLD
Low temperature trip point
VHYS(COL Hysteresis on low trip point
D)
Battery charging
Battery charging
Battery charging
Battery charging
12 12.5
1
24.5
25
1
13
25.5
% of
VIN
% of
VIN
% of
VIN
% of
VIN
Copyright © 2009â2010, Texas Instruments Incorporated
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