BQ24100 Datasheet, PDF (4/26 Pages) Texas Instruments – SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POL CHARGE MANAGEMENT IC WITH INTEGRATED POWERFETS

bq24100, bq24103
bq24105, bq24108
bq24113, bq24115
SLUS606C – JUNE 2004 – REVISED SEPTEMBER 2005
ELECTRICAL CHARACTERISTICS (continued)
T_J = 0°C to 125°C and recommended supply voltage range (unless otherwise stated)
PARAMETER
TEST CONDITIONS
VOLTAGE REGULATION
V_OREG
Output voltage, bq24103/13
Output voltage, bq24100/08
CELLS = Low, in voltage regulation
CELLS = High, in voltage regulation
Operating in voltage regulation
V_IBAT
Feedback regulation REF for bq24105/15
only (W/FB)
I_IBAT = 25 nA typical into pin
Voltage regulation accuracy
T_A = 25°C
CURRENT REGULATION - FAST CHARGE
I_OCHARGE Output current range of converter
V_LOWV ≤ V_I(BAT) < V_OREG,
V_(VCC) - V_I(BAT) > V_(DO-MAX)
100 mV ≤ V_IREG≤ 200 mV,
VIREG
+
1V
RSET1
1000,
V_IREG
Voltage regulated across R_(SNS) Accuracy
Programmed Where
5 kΩ ≤ RSET1 ≤ 10 kΩ, Select RSET1 to
program V_IREG,
V_{IREG(measured)} = I_OCHARGE + R_SNS
(–10% to 10% excludes errors due to RSET1
and R_(SNS) tolerances)
V_(ISET1)
Output current set voltage
V_(LOWV) ≤ V_I(BAT) ≤ V_O(REG),
V_(VCC) ≥ V_I(BAT) × _V(DO-MAX)
K_(ISET1)
Output current set factor
V_LOWV ≤ V_I(BAT) < V_O(REG) ,
V_(VCC) ≥ V_I(BAT) + _V(DO-MAX)
PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION
V_LOWV
Precharge to fast-charge transition voltage
threshold, BAT, bq24100/03/05/08 ICs only
t
I_OPRECHG
V_(ISET2)
K_(ISET2)
Deglitch time for precharge to fast charge
transition
Precharge range
Precharge set voltage, ISET2
Precharge current set factor
Rising voltage;
t_RISE, t_FALL = 100 ns, 2-mV overdrive
V_I(BAT) < V_LOWV, t < t_PRECHG
V_I(BAT) < V_LOWV, t < t_PRECHG
100 mV ≤ V_IREG-PRE ≤ 100 mV,
VIREG_*PRE
+
0.1V
RSET2
1000,
V_IREG-PRE Voltage regulated across R_SNS-Accuracy
(PGM) Where
1.2 kΩ ≤ RSET2 ≤ 10 kΩ, Select RSET1
to program V_IREG-PRE,
V_IREG-PRE (Measured) = I_OPRE-CHG × R_SNS
(–20% to 20% excludes errors due to RSET1
and R_SNS tolerances)
CHARGE TERMINATION (CURRENT TAPER) DETECTION
I_TERM
V_TERM
Charge current termination detection range
Charge termination detection set voltage,
ISET2
V_I(BAT) > V_RCH
V_I(BAT) > V_RCH
K_(ISET2)
Termination current set factor
Charger termination accuracy
V_I(BAT) > V_RCH
t_dg-TERM
Deglitch time for charge termination
Both rising and falling,
2-mV overdrive t_RISE, t_FALL = 100 ns
TEMPERATURE COMPARATOR AND VTSB BIAS REGULATOR
V_LTF
V_HTF
V_TCO
Cold temperature threshold, TS
Hot temperature threshold, TS
Cutoff temperature threshold, TS
LTF hysteresis
MIN
–0.5%
–1%
150
–10%
68
20
15
–20%
15
–20%
20
72.8
33.7
28.7
0.5
TYP
4.2
8.4
4.2
2.1
1
1000
71.4
30
100
1000
100
1000
30
73.5
34.4
29.3
1.0
www.ti.com
MAX UNIT
V
V
0.5%
1%
2000
mA
10%
V
V/A
75 %V_O(REG)
40
ms
200
mA
mV
V/A
20%
200
mA
mV
V/A
20%
40
ms
74.2
35.1
29.9
1.5
%V_O(VTSB)
4