BQ24090 Datasheet, PDF (4/31 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion Battery Charger

bq24090, bq24091
bq24092, bq24093
SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010
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ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range 0°C ≤ T_J ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
QUIESCENT CURRENT
I_OUT(PDWN)
Battery current into OUT pin
V_IN = 0V
I_OUT(DONE)
OUT pin current, charging terminated V_IN = 6V, V_OUT > V_OUT(REG)
I_IN(STDBY)
Standby current into IN pin
TS = LO, V_IN ≤ 6V
I_CC
Active supply current, IN pin
TS = open, V_IN = 6V, TTDM – no load on OUT pin,
V_OUT > V_OUT(REG), IC enabled
0.8
BATTERY CHARGER FAST-CHARGE
V_OUT(REG)
V_{O_HT(REG)}
Battery regulation voltage
Battery hot regulation Voltage,
bq24092/3
V_IN = 5.5V, I_OUT = 25mA, (V_TS-45°C≤ V_TS ≤ V_TS-0°C)
V_IN = 5.5V, I_OUT = 25mA, V_TS-60°C≤ V_TS ≤ V_TS-45°C
4.16
4.02
4.2
4.06
I_OUT(RANGE)
V_DO(IN-OUT)
I_OUT
Programmed Output “fast charge”
current range
Drop-Out, VIN – VOUT
Output “fast charge” formula
K_ISET
Fast charge current factor
PRECHARGE – SET BY PRETERM PIN
V_OUT(REG) > V_OUT > V_LOWV; V_IN = 5V, ISET2=Lo,
R_ISET = 675 to 10.8kΩ
Adjust VIN down until I_OUT = 0.5A, V_OUT = 4.15V,
R_ISET = 675 , ISET2=Lo (adaptor mode); Tj ≤ 100°C
V_OUT(REG) > V_OUT > V_LOWV; V_IN = 5V, ISET2 = Lo
R_ISET = K_ISET /I_OUT; 50 < IOUT < 800 mA
R_ISET = K_ISET /I_OUT; 25 < IOUT < 50 mA
R_ISET = K_ISET /I_OUT; 10 < IOUT < 25 mA
10
325
K_ISET/R_ISET
510
540
480
527
350
520
V_LOWV
Pre-charge to fast-charge transition
threshold
2.4
2.5
t_DGL1(LOWV)
Deglitch time on pre-charge to
fast-charge transition
70
t_DGL2(LOWV)
Deglitch time on fast-charge to
pre-charge transition
32
I_PRE-TERM
%_PRECHG
Refer to the Termination Section
Pre-charge current, default setting
Pre-charge current formula
K_PRE-CHG
% Pre-charge Factor
TERMINATION – SET BY PRE-TERM PIN
V_OUT < V_LOWV; R_ISET = 1080Ω;
R_PRE-TERM= High Z
R_PRE-TERM = K_PRE-CHG (Ω/%) × %_PRE-CHG (%)
V_OUT < V_LOWV, V_IN = 5V, R_PRE-TERM = 2k to 10kΩ;
R_ISET = 1080Ω , R_PRE-TERM = K_PRE-CHG × %I_FAST-CHG,
where %I_FAST-CHG is 20 to 100%
V_OUT < V_LOWV, V_IN = 5V, R_PRE-TERM = 1k to 2kΩ;
R_ISET = 1080Ω, R_PRE-TERM = K_PRE-CHG × %I_FAST-CHG,
where %I_FAST-CHG is 10% to 20%
18
20
R_PRE-TERM/K_PRE-CHG%
90
100
84
100
%_TERM
Termination Threshold Current, default
setting
Termination Current Threshold
Formula
V_OUT > V_RCH; R_ISET = 1k;
R_PRE-TERM= High Z
R_PRE-TERM = K_TERM (Ω/%) × %TERM (%)
9
10
R_PRE-TERM/ K_TERM
K_TERM
% Term Factor
V_OUT > V_RCH, V_IN = 5V, R_PRE-TERM = 2k to 10kΩ ;
R_ISET = 750Ω K_TERM × %I_FAST-CHG, where %I_FAST-CHG
182
200
is 10 to 50%
V_OUT > V_RCH, V_IN = 5V, R_PRE-TERM = 1k to 2kΩ ; R_ISET
= 750Ω K_TERM × %Iset, where %Iset is 5 to 10%
174
199
I_PRE-TERM
Current for programming the term. and
pre-chg with resistor. I_Term-Start is the
initial PRE-TERM current.
R_PRE-TERM = 2k, V_OUT = 4.15V
71
75
%TERM
t_DGL(TERM)
I_Term-Start
Termination current formula
Deglitch time, termination detected
Elevated PRE-TERM current for,
t_Term-Start, during start of charge to
prevent recharge of full battery,
R_TERM/ K_TERM
29
80
85
t_Term-Start
Elevated termination threshold initially
active for t_Term-Start
1.25
MAX UNIT
1
mA
6
125 mA
1.0 mA
4.23 V
4.1 V
1000 mA
520 mV
A
565
580 AΩ
680
2.6 V
ms
ms
22 ^%IOUT-
CC
110 Ω/%
117 Ω/%
11 ^%IOUT-
CC
216
Ω/%
224
81 mA
%
ms
92 mA
min
4
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