BQ25120A Datasheet, PDF (8/67 Pages) Texas Instruments – Low IQ Highly Integrated Battery Charge Management Solution for Wearables and IoT

bq25120A
SLUSD08 – MAY 2017
www.ti.com
8.5 Electrical Characteristics
Circuit of Figure 1, V_(UVLO) < V_IN < V_(OVP) and V_IN > V_(BAT) + V_(SLP), T_J = –40 to 85°C and T_J = 25°C for typical values (unless
otherwise noted)
PARAMETERS
TEST CONDITIONS
INPUT CURRENTS
V_(UVLO) < V_IN < V_(OVP) and V_IN > V_(BAT) + V_(SLP) PWM
Switching, –40 < T_J < 85
I_IN
Supply Current for
Control
V_(UVLO) < V_IN < V_(OVP) and V_IN > V_(BAT) + V_(SLP) PWM NOT
Switching
I_{(BAT_HIZ)}
Battery discharge current
in High Impedance Mode
0°C < T_J < 85°C, V_IN = 5 V, Charge Disabled
0°C < T_J < 60°C, V_IN = 0 V, High-Z Mode, PWM Not
Switching, V_(BUVLO) < V_(BAT) < 4.65V
0°C < T_J < 60°C, V_IN = 0 V, High-Z Mode, PWM Not
Switching, V_(BUVLO) < V_(BAT) < 6.6 V
0°C < T_J < 60°C, V_IN = 0 V or floating, High-Z Mode, PWM
Switching, No Load
0°C < T_J < 85°C, V_IN = 0 V, High-Z Mode, PWM Switching,
LSLDO enabled
I_{(BAT_ACTIVE)}
I_{(BAT_SHIP)}
Battery discharge current
in Active Battery Mode
Battery discharge current
in Ship Mode
0°C < T_J < 85°C, V_IN = 0 V, Active Battery Mode, PWM
Switching, LSLDO enabled, I2C Enabled, V_(BUVLO) < V_(BAT) <
4.65 V
0°C < T_J < 85°C, 0 < V_IN < V_IN(UVLO), Active Battery Mode,
PWM Switching, LSLDO disabled, I2C Enabled, /CD = Low,
V_(BUVLO) < V_(BAT) < 4.65 V
0°C < T_J < 85°C, V_IN = 0 V, Ship Mode
POWER-PATH MANAGEMENT and INPUT CURRENT LIMIT
V_DO(IN-PMID)
V_DO(BAT-PMID)
V_IN – V_(PMID)
V_(BAT) – V_(PMID)
V_IN = 5 V, I_IN = 300 mA
V_IN = 0 V, V_(BAT) > 3 V, I_ff = 400 mA
V_(BSUP1)
Enter supplement mode
threshold
V_(BAT) > V_(BUVLO)
V_(BSUP2)
Exit supplement mode
threshold
V_(BAT) > V_(BUVLO)
I_{(BAT_OCP)}
I_(ILIM)
Current Limit, Discharge
Mode
Input Current Limit
Maximum Input Current
using ILIM
I_ILIM accuracy I_ILIM
accuracy
K_(ILIM)
Maximum input current
factor
V_IN(DPM)
Input voltage threshold
when input current is
reduced
V_{IN_DPM} threshold
accuracy
BATTERY CHARGER
V_D(PPM)
PMID voltage threshold
when charge current is
reduced
R_ON(BAT-PMID)
Internal Battery Charger
MOSFET on-resistance
V_(BATREG)
Charge Voltage
Voltage Regulation
Accuracy
V_(BAT) > V_(BUVLO)
Programmable Range, 50-mA steps
50 mA to 100 mA
100 mA to 400 mA
I_(ILIM) = 50 mA to 100 mA
I_(ILIM) = 100 mA to 400 mA
Programmable Range using V_IN(DPM) Registers. Can be
disabled using V_{IN(DPM_ON)}
Above V_(BATREG)
Measured from BAT to PMID, V_(BAT) = 4.35 V, High-Z mode
Operating in voltage regulation, Programmable Range,
10mV steps
T_J = 25°C
T_J = 0°C to 85°C
MIN
TYP
1
0.7
0.9
0.75
1.35
6.8
6.2
2
0.85
50
–12%
–5%
175
190
125
120
V_(PMID) <
V_(BAT) – 25
mV
V_(PMID) <
V_(BAT) –
5mV
1.15
K_(ILIM) /
R_(ILIM)
200
200
4.2
–3%
0.2
300
3.6
–0.5%
–0.5%
MAX
3
1.5
1.2
1.5
3.5
4.25
12
11
150
170
160
1.35
400
12%
5%
225
210
4.9
3%
400
4.65
0.5%
0.5%
UNIT
mA
mA
mA
µA
µA
µA
µA
µA
µA
nA
mV
mV
V
V
A
mA
AΩ
AΩ
V
V
mΩ
V
8
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