BQ24230 Datasheet, PDF (4/33 Pages) Texas Instruments – USB-FRIENDLY LITHIUM-ION BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24230
bq24232
SLUS821A – OCTOBER 2008 – REVISED DECEMBER 2008 .......................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_IN-DPM
Input voltage threshold when input
current is reduced
EN2 = LO, EN1 = X
V_DPPM
Output voltage threshold when
charging current is reduced
V_BSUP1
Enter battery supplement mode
V_BAT = 3.6 V, R_ILIM = 1.5 kΩ, R_LOAD = 10 Ω →2
Ω
V_BSUP2
Exit battery supplement mode
V_BAT = 3.6 V, R_ILIM = 1.5 kΩ, R_LOAD = 2 Ω →10
Ω
V_O(SC1)
Output short-circuit detection
threshold, power-on
V_IN > UVLO and V_IN > V_BAT+V_IN(DT)
V_O(SC2)
Output short-circuit detection
threshold, supplement mode V_BAT
– V_OUT > V_O(SC2) indicates short
circuit
V_IN > UVLO and V_IN > V_BAT+V_IN(DT)
t_DGL(SC2)
Deglitch time, supplement mode
short circuit
t_REC(SC2)
Recovery time, supplement mode
short circuit
BATTERY CHARGER
I_BAT(SC)
Source current for BAT pin
short-circuit detection
V_BAT = 1.5 V
V_BAT(SC)
BAT pin short-circuit detection
threshold
V_BAT rising
V_BAT(REG)
V_LOWV
Battery charge voltage
Precharge to fast-charge transition V_IN > UVLO and V_IN > V_BAT + V_IN(DT)
threshold
t_DGL1(LOWV)
Deglitch time on precharge to
fast-charge transition
t_DGL2(LOWV)
Deglitch time on fast-charge to
precharge transition
Battery fast-charge current range
V_BAT(REG) > V_BAT > V_LOWV, V_IN = 5 V, CE = LO,
EN1 = LO, EN2 = HI
I_CHG
Battery fast-charge current
CE = LO, EN1= LO, EN2 = HI,
V_BAT > V_LOWV, V_IN = 5 V, I_INmax > I_CHG, no load
on OUT pin, thermal loop and DPM loop not
active
K_ISET
I_PRECHG
I_TERM
Fast-charge current factor
Precharge current
Termination comparator threshold
for termination detection
25 mA ≥ I_CHG≥ 500 mA
2.5 mA ≥ I_PRECHG≥ 30 mA
CE = LO, (EN1,EN2) ≠ (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
CE = LO, (EN1,EN2) = (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
I_TERM
Termination current threshold
factor (bq24232)
I_TERM = 0% to 50% of I_CHG
I_BIAS(ITERM)
Current for external
termination-setting resistor
K_ITERM
K factor for termination detection
threshold (externally set)
(bq24232)
CE = LO, (EN1,EN2) ≠ (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
CE = LO, (EN1,EN2) = (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
I_BIAS(ITERM)
Current for external
termination_setting resistor
(bq24232)
t_DGL(TERM)
Deglitch time, termination detected
V_RCH
Recharge detection threshold
V_IN > UVLO and V_IN > V_BAT+V_IN(DT)
MIN
TYP
MAX UNIT
4.35
4.50
4.63 V
V_O(REG) –
180 mV
V_O(REG) –
100 mV
V_O(REG) –
30 mV
V
V_OUT ≤ V_BAT
–40 mV
V
V_OUT ≥
V_BAT–20 mV
V
0.8
0.9
1V
200
250
300 mV
250
µs
60
ms
4
7.5
11 mA
1.6
1.8
2V
4.16
4.20
4.24 V
2.9
3
3.1 ms
25
ms
25
ms
25
500 mA
K_ISET/R_ISET
A
797
70
0.09*I_CHG
870
975 AΩ
88
106 AΩ
A
0.1*I_CHG 0.11*I_CHG
0.027*I_CHG
72
0.024
0.033*I_CHG 0.040*I_CHG
K_ITERM*R_ITERM/R_ISET
A
75
0.030
78 µA
A
0.036
0.009
0.010
0.011
µA
72
75
78
V_O(REG)
–140 mV
25
V_O(REG) –100
mV
ms
V_O(REG)
–60 mV
V
4
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