BQ24171 Datasheet, PDF (7/35 Pages) Texas Instruments – JEITA Compliant Stand-Alone Switch-Mode Li-Ion and Li-Polymer Battery Charger with Integrated MOSFETs and Power Path Selector

bq24171
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SLUSAF2A – FEBRUARY 2011 – REVISED MAY 2011
ELECTRICAL CHARACTERISTICS
4.5V ≤ V(PVCC, AVCC) ≤ 17V, –40°C < T_J + 125°C, typical values are at T_A = 25°C, with respect to AGND (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX UNITS
OPERATING CONDITIONS
V_{AVCC_OP}
AVCC input voltage operating range during
charging
4.5
17
V
QUIESCENT CURRENTS
V_AVCC > V_UVLO, V_SRN > V_AVCC (SLEEP),
T_J = 0°C to 85°C
I_BAT
Battery discharge current (sum of currents
into AVCC, PVCC, ACP, ACN)
BTST, SW, SRP, SRN, V_AVCC > V_UVLO, V_AVCC >
V_SRN, ISET < 40mV, V_BAT=12.6V, Charge
disabled
15
25 µA
BTST, SW, SRP, SRN, V_AVCC > V_UVLO, V_AVCC >
V_SRN, ISET > 120mV, V_BAT=12.6V, Charge done
25
V_AVCC > V_UVLO, V_AVCC > V_SRN, ISET < 40mV,
V_BAT=12.6V, Charge disabled
1.2
1.5
I_AC
Adapter supply current (sum of current into V_AVCC > V_UVLO, V_AVCC > V_SRN, ISET > 120mV,
AVCC,ACP, ACN)
Charge enabled, no switching
2.5
5 mA
V_AVCC > V_UVLO, V_AVCC > V_SRN, ISET > 120mV,
Charge enabled, switching
15 ⁽¹⁾
CHARGE VOLTAGE REGULATION
V_{FB_REG}
Feedback Regulation Voltage
Charge Voltage Regulation Accuracy
I_VFB
Leakage Current into FB pin
CURRENT REGULATION – FAST CHARGE
V_T3 < V_TS < V_T1
V_T4 < V_TS < V_T3
V_T5 < V_TS < V_T4
T_J = 0 to 85°C
T_J = –40 to 125°C
V_FB = 2.1V, 2.05V, 2.025V
–0.5%
–0.7%
2.1
2.05
V
2.025
–0.5%
–0.7%
100 nA
V_ISET
K_ISET
ISET Voltage Range
R_SENSE = 10mΩ
Charge Current Set Factor (Amps of Charge
Current per Volt on ISET pin)
R_SENSE = 10mΩ
0.12
0.8
V
5
A/V
Charge Current Regulation Accuracy
(with Schottky diode on SW)
V_{ISET_CD}
Charge Disable Threshold
V_{ISET_CE}
Charge Enable Threshold
I_ISET
Leakage Current into ISET
INPUT CURRENT REGULATION
V_SRP-SRN = 40 mV
V_SRP-SRN = 20 mV
V_SRP-SRN = 5 mV
ISET falling
ISET rising
VISET = 2V
–4%
–7%
–25%
40
4%
7%
25%
50
mV
100
120 mV
100 nA
K_DPM
Input DPM Current Set Factor (Amps of
Input Current per Volt on ACSET)
R_SENSE = 10mΩ
5
A/V
Input DPM Current Regulation Accuracy
(with Schottky diode on SW)
I_ACSET
Leakage Current into ACSET pin
CURRENT REGULATION – PRE-CHARGE
K_IPRECHG
Precharge current set factor
Precharge current regulation accuracy
V_ACP-ACN = 80 mV
V_ACP-ACN = 40 mV
V_ACP-ACN = 20 mV
V_ACP-ACN = 5 mV
V_ACP-ACN = 2.5 mV
V_ACSET = 2V
Percentage of fast charge current
V_SRP-SRN = 4 mV
V_SRP-SRN = 2 mV
-4%
-9%
–15%
–20%
-40%
4%
9%
15%
20%
40%
100 nA
–25%
–40%
10% ⁽²⁾
25%
40%
(1) Specified by design
(2) The minimum current is 120 mA on 10mΩ sense resistor.
Copyright © 2011, Texas Instruments Incorporated
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