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| BQ24075T Datasheet, PDF (5/29 Pages) Texas Instruments – 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC | |||
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www.ti.com
bq24075T
bq24079T
SLUS937 â DECEMBER 2009
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
tDGL1(LOWV)
Deglitch time on pre-charge to fast-charge
transition
25
ms
tDGL2(LOWV)
Deglitch time on fast-charge to pre-charge
transition
25
ms
ICHG
Battery fast charge current range
VBAT(REG) > VBAT > VLOWV, VIN = 5V, CE =
LO, EN1= LO, EN2 = HI
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,
KISET/RISET
A
thermal loop not active, DPM loop not active
KISET
IPRECHG
kPRECHG
ITERM
Fast charge current factor
Pre-charge current
Pre-charge current factor
Charge current value for termination detection
threshold
797
890
975 AΩ
KPRECHG /RISET
70
88
A
106
CE = LO, (EN1,EN2)â (LO,LO),
VBAT > VRCH, t < tMAXCH, VIN = 5V, DPM loop
not active, thermal loop not active
0.09ÃICHG 0.1ÃICHG
0.11ÃICHG
CE = LO, (EN1,EN2)=(LO,LO),
VBAT > VRCH, t < tMAXCH, VIN = 5V, DPM loop
not active, thermal loop not active
0.027ÃICHG .033ÃICH
G
0.040ÃICHG
tDGL(TERM)
VRCH
Deglitch time, termination detected
Recharge detection threshold
VO(REG)
â140mV
25
VO(REG)
â100mV
ms
VO(REG)
â60mV
V
tDGL(RCH)
tDGL(NO-IN)
Deglitch time, recharge threshold detected
Delay time, input power loss to charger turn-off
VBAT = 3.6V. Time measured from VIN:
5V â 3.3V 1μs fall-time
62.5
ms
20
ms
IBAT(DET)
Sink current for battery detection
tDET
Battery detection timer
BATTERY CHARGING TIMERS
5
7.5
250
10 mA
ms
tPRECHG
Pre-charge safety timer value
tMAXCH
Charge safety timer value
tPRECHG
Pre-charge safety timer value(externally set)
tMAXCH
Charge safety timer value (externally set)
KTMR
Timer factor
BATTERY â PACK NTC MONITOR
TMR = floating
TMR = floating
18k⦠< RTMR < 72kâ¦
18k⦠< RTMR < 72kΩ
1440
1800
14400 18000
RTMR x KTMR
10 x RTMR x KTMR
35
45
2160
21600
55
s
s
s
s
s / kâ¦
VHOT
High temperature trip point
Battery charging
VHYS(HOT) Hysteresis on high trip point
Battery charging
VCOLD
Low temperature trip point
Battery charging
VHYS(COLD) Hysteresis on low trip point
tDGL(TS)
Deglitch time, pack temperature fault detection
THERMAL REGULATION
Battery charging
Battery charging
12
12.5
1
24.5
25
1
50
13
25.5
% of
VIN
% of
VIN
% of
VIN
% of
VIN
ms
TJ(REG)
Temperature Regulation Limit
TJ(OFF)
Thermal shutdown temperature
TJ(OFF-HYS) Thermal shutdown hysteresis
LOGIC LEVELS ON EN1, EN2, CE, SYSOFF, TD
125
°C
155
°C
20
°C
VIL
Logic LOW input voltage
VIH
Logic HIGH input voltage
IIL
IIH
LOGIC LEVELS ON PGOOD, CHG
0
0.4 V
1.4
6.0 V
1 μA
10 μA
VOL
Output LOW voltage
ISINK = 5 mA
0.4 V
Copyright © 2009, Texas Instruments Incorporated
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