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ELECTRICALCHARACTERISTICS
V
IREG
1V
RSET1
1000,
V
IREG
前
0.1v
RSET2
1000,
bq24120
bq24123
SLUS688–MARCH2006
T
J
=0
°
Cto125
°
candrecommendedsupplyvoltagerange(unlessotherwisestated)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
INPUTCURRENTS
V
CC
>v
cc(最小值)
,pwmswitching10
毫安
I
vcc(vcc)
V
CC
supplycurrentV
CC
>v
cc(最小值)
,pwmnotswitching5
V
CC
>v
cc(最小值)
,ce=high315
µ
一个
0
°
C
≤
T
J
≤
65
°
c,v
i(bat)
=4.2v,
3.5
V
CC
<v
(slp)
orV
CC
>v
(slp)
butnotincharge
batterydischargesleepcurrent,(sns,0
°
C
≤
T
J
≤
65
°
c,v
i(bat)
=8.4v,
I
(slp)
5.5
µ
一个
bat,outpins)v
CC
<v
(slp)
orV
CC
>v
(slp)
butnotincharge
0
°
C
≤
T
J
≤
65
°
c,v
i(bat)
=12.6v,
7.7
V
CC
<v
(slp)
orV
CC
>v
(slp)
butnotincharge
VOLTAGEREGULATION
cells=低,involtageregulation4.2
outputvoltage,bq24123
V
OREG
cells=高,involtageregulation8.4v
outputvoltage,bq24120operatinginvoltageregulation4.2
T
一个
=25
°
c–0.5%0.5%
Voltageregulationaccuracy
–1%1%
currentregulation-fastcharge
V
LOWV
≤
V
i(bat)
<v
OREG
,
I
OCHARGE
Outputcurrentrangeofconverter1502000mA
V
(vcc)
-v
i(bat)
>v
(做-最大值)
100mV
≤
V
IREG
≤
200mv,
(1)
V
IREG
VoltageregulatedacrossR
(sns)
Accuracy–10%10%
ProgrammedWhere
5k
Ω≤
RSET1
≤
10k
Ω
,selectrset1to
programV
IREG
,
V
ireg(量过的)
=I
OCHARGE
×
R
SNS
(–10%to10%excludeserrorsduetorset1
andR
(sns)
容忍)
V
(lowv)
≤
V
i(bat)
≤
V
o(reg)
,
V
(iset1)
Outputcurrentsetvoltage1V
V
(vcc)
≥
V
i(bat)
+V
(做-最大值)
V
LOWV
≤
V
i(bat)
<v
o(reg)
,
K
(iset1)
outputcurrentsetfactor1000v/一个
V
(vcc)
≥
V
i(bat)
+V
(做-最大值)
prechargeandshort-circuitcurrentregulation
prechargetofast-chargetransitionvoltage
V
LOWV
6871.475%v
o(reg)
门槛,bat
deglitchtimeforprechargetofastchargerisingvoltage;
t203040ms
transitiont
上升
,t
下降
=100ns,2-mvoverdrive
I
OPRECHG
PrechargerangeV
i(bat)
<v
LOWV
,t<t
PRECHG
15200mA
V
(iset2)
prechargesetvoltage,iset2v
i(bat)
<v
LOWV
,t<t
PRECHG
100mV
K
(iset2)
prechargecurrentsetfactor1000v/一个
10mV
≤
V
ireg-前
≤
100mv,
(1)
V
ireg-前
VoltageregulatedacrossR
SNS
-accuracy–20%20%
在哪里
1.0k
Ω≤
RSET2
≤
10k
Ω
,selectrset2
toprogramV
ireg-前,
V
ireg-前
(量过的)=i
opre-chg
×
R
SNS
(–20%to20%excludeserrorsduetorset2
andR
SNS
容忍)
chargetermination(currenttaper)发现
I
期
ChargecurrentterminationdetectionrangeV
i(bat)
>v
OREG
-v
RCH
15200mA
chargeterminationdetectionsetvoltage,
V
期
V
i(bat)
>v
OREG
-v
RCH
100mV
ISET2
(1)inductorpeakcurrentshouldbelessthan2.6a.useequations12,13,15,18,and19tomakesurethepeakinductorcurrentisless
than2.6a.
3
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