BQ24630 Datasheet, PDF (4/33 Pages) Texas Instruments – Stand-Alone Synchronous Switch-Mode Lithium Phosphate Battery Charger with System Power Selector and Low Iq

bq24630
SLUS894 – JANUARY 2010
www.ti.com
ELECTRICAL CHARACTERISTICS
5.0V ≤ V(VCC) ≤28V, 0°C<T_J<+125°C,typical values are at T_A=25°C, with respect to GND unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN TYP MAX
OPERATING CONDITIONS
V_{VCC_OP}
VCC Input voltage operating range
QUIESCENT CURRENTS
5.0
28.0
Total battery discharge current (sum of
currents into VCC, BTST, PH, ACP, ACN, V_VCC < V_SRN, V_VCC > V_UVLO (SLEEP)
15
SRP, SRN, VFB), VFB ≤2.1 V
I_BAT
Battery discharge current (sum of currents V_VCC > V_SRN, V_VCC > V_UVLO CE = LOW
5
into BTST, PH, SRP, SRN, VFB), VFB ≤
2.1 V
V_VCC > V_SRN, V_VCC > V_VCCLOW CE = HIGH, Charge done
5
V_VCC > V_SRN, V_VCC > V_UVLO CE = LOW
1
1.5
I_AC
Adapter supply current (current into
VCC,ACP,ACN pin)
V_VCC > V_SRN, V_VCC >V_VCCLOW, CE = HIGH, charge done
V_VCC > V_SRN, V_VCC >V_VCCLOW, CE = HIGH, Charging,
Qg_total = 20 nC, V_VCC=20V
2
5
12
V_FB
Feedback regulation voltage
1.8
Charge voltage regulation accuracy
T_J = 0°C to 125°C
T_J = –40°C to 125°C
–0.5%
–0.7%
0.5%
0.7%
Input leakage current into VFB pin
VFB = 1.8 V
100
CURRENT REGULATION – FAST CHARGE
V_ISET1
V_{IREG_CHG}
K_(ISET1)
ISET1 voltage range
SRP–SRN current sense voltage range
Charger current set factor amps of charge
current per volt on ISET1 pin)
V_{IREG_CHG} = V_SRP – V_SRN
R_SENSE = 10 mΩ
2
100
5
Charge current regulation accuracy
I_ISET1
Leakage current in to ISET1 Pin
CURRENT REGULATION – PRECHARGE
V_{IREG_CHG} = 40 mV
V_{IREG_CHG} = 20 mV
V_{IREG_CHG} = 5 mV
V_{IREG_CHG} = 1.5 mV (V_SRN > 3.1 V)
V_ISET1 = 2 V
–3%
–4%
–25%
–40%
3%
4%
25%
40%
100
Precharge current
CHARGE TERMINATION
R_SENSE = 10 mΩ, VFB < V_LOWV
50
125
200
V_ISET2
K_TERM
ISET2 voltage range
Termination current range
Termination current set factor (amps of
termination current per volt on ISET2 pin)
R_SENSE = 10 mΩ
2
2
1
Termination current accuracy
Deglitch time for termination (both edge)
V_ITERM = 20 mV
V_ITERM = 5 mV
V_ITERM = <1.5 mV
–4%
–25%
–45%
4%
25%
45%
100
t_QUAL
Termination qualification time
I_QUAL
Termination qualification time
I_ISET2
Leakage current into ISET2 pin
INPUT CURRENT REGULATION
V_BAT > V_RECH and I_CHARGE < I_TERM
Discharge current once termination is detected
V_ISET2 = 2 V
250
2
100
V_ACSET
V_{IREG_DPM}
K_(ACSET)
ACSET voltage range
ACP-ACN current sense voltage range
Input current set factor (amps of input
current per volt on ACSET pin)
V_{IREG_DPM} = V_ACP – V_ACN
R_SENSE = 10 mΩ
0
2
0
100
5
V_{IREG_DPM} = 40 mV
Input current regulation accuracy
V_{IREG_DPM} = 20 mV
V_{IREG_DPM} = 5 mV
I_ACSET
Leakage current into ACSET pin
V_ACSET = 2 V
INPUT UNDER-VOLTAGE LOCK-OUT COMPARATOR (UVLO)
–3%
–4%
–25%
3%
4%
25%
100
V_UVLO
V_{UVLO_HYS}
AC under-voltage rising threshold
AC under-voltage hysteresis, falling
Measure on VCC
3.65 3.85
4
350
UNIT
V
mA
µA
mA
V
nA
V
mV
A/V
nA
mA
V
A
A/V
ms
ms
mA
nA
V
mV
A/V
nA
V
mV
4
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