BOOST CONVERTER \ CHARGER STAGE |
VIN(DC) |
DC input voltage into VIN_DC |
Cold-start completed |
130 |
|
3000 |
mV |
IIN(DC) |
Peak Current flowing from VIN into VIN_DC input |
0.5V < VIN < 3 V; VSTOR = 4.2 V |
|
200 |
300 |
mA |
PIN |
Input power range for normal charging |
VBAT > VIN_DC; VIN_DC = 0.5 V |
0.01 |
|
300 |
mW |
VIN(CS) |
Cold-start Voltage. Input voltage that will start charging of VSTOR |
VBAT < VBAT_UV; VSTOR = 0 V;
0°C < TA < 85°C |
|
600 |
700 |
mV |
PIN(CS) |
Minimum cold-start input power to start normal charging |
VBAT < VSTOR(CHGEN)
VIN_DC clamped to VIN_CS by cold start circuit
VBAT = 100 µF ceramic |
|
15 |
|
µW |
VSTOR_CHGEN |
Voltage on VSTOR when cold start operation ends and normal charger operation begins |
|
1.6 |
1.77 |
1.95 |
V |
RBAT(on) |
Resistance of switch between VBAT and VSTOR when turned on. |
VBAT = 4.2 V; VSTOR load = 50 mA |
|
|
2 |
Ω |
RDS(on) |
Charger Low Side switch ON resistance |
VBAT = 2.1 V |
|
|
2 |
Ω |
VBAT = 4.2 V |
|
|
2 |
Charger rectifier High Side switch ON resistance |
VBAT = 2.1 V |
|
|
5 |
Ω |
VBAT = 4.2 V |
|
|
5 |
fSW_BST |
Boost converter mode switching frequency |
|
|
|
1 |
MHz |
BATTERY MANAGEMENT |
IVBAT |
Leakage on VBAT pin |
VBAT = 2.1 V; VBAT_UV = 2.3 V, TJ = 25°C VSTOR = 0 V |
|
1 |
5 |
nA |
VBAT = 2.1 V; VBAT_UV = 2.3 V,
–40°C < TJ < 65°C, VSTOR = 0 V |
|
|
80 |
nA |
IVSTOR |
VSTOR Quiescent current Charger Shutdown in UV Condition |
VIN_DC = 0V;
VBAT < VBAT_UV = 2.4V;
VSTOR = 2.2V, No load on VBAT |
|
330 |
750 |
nA |
VSTOR Quiescent current Charger Shutdown in OV Condition |
VIN_DC = 0V,
VBAT > VBAT_OV, VSTOR = 4.25,
No load on VBAT |
|
570 |
1400 |
nA |
VBAT_OV |
Programmable voltage range for overvoltage threshold (Battery voltage is rising) |
VSTOR increasing |
2.5 |
|
5.25 |
V |
VBAT_OV_HYST |
Battery voltage overvoltage hysteresis threshold (Battery voltage is falling), internal threshold |
VSTOR decreasing |
18 |
35 |
89 |
mV |
VBAT_UV |
Programmable voltage range for under voltage threshold (Battery voltage is falling) |
VSTOR decreasing; VBAT_UV > VBias |
2.2 |
|
VBAT_OV |
V |
VBAT_UV_HYST |
Battery under voltage threshold hysteresis, internal thershold |
VSTOR increasing |
40 |
80 |
125 |
mV |
VBAT_OK |
Programmable voltage range for threshold voltage for high to low transition of digital signal indicating battery is OK, |
VSTOR decreasing |
VBAT_UV |
|
VBAT_OV |
V |
VBAT_OK_HYST |
Programmable voltage range for threshold voltage for low to high transition of digital signal indicating battery is OK, |
VSTOR increasing |
50 |
|
VBAT_OV-VBAT_UV |
mV |
VBAT_ACCURACY |
Overall Accuracy for threshold values, UV, OV, VBAT_OK |
Selected resistors are 0.1% tolerance |
–5% |
|
5% |
|
VBAT_OKH |
VBAT OK (High) threshold voltage |
Load = 10 µA |
|
|
VSTOR-200mV |
V |
VBAT_OKL |
VBAT OK (Low) threshold voltage |
Load = 10 µA |
|
|
100 |
mV |
TSD_PROTL |
The temperature at which the boost converter is disabled and the switch between VBAT and VSTOR is disconnected to protect the battery |
OT_Prog = LO |
|
65 |
|
°C |
TSD_PROTH |
OT_Prog = HI |
|
120 |
|
OT_Prog |
Voltage for OT_PROG High setting |
|
2 |
|
|
V |
Voltage for OT_PROG Low setting |
|
|
|
0.3 |
V |
BIAS and MPPT CONTROL STAGE |
VOC_sample |
Sampling period of VIN_DC open circuit voltage |
|
|
16 |
|
s |
VOC_Settling |
Sampling period of VIN_DC open circuit voltage |
|
|
256 |
|
ms |
VIN_Reg |
Regulation of VIN_DC during charging |
0.5 V <VIN < 3 V; IIN (DC) = 10 mA |
–10% |
|
10% |
|
VIN_shutoff |
DC input voltage into VIN_DC when charger is turned off |
|
40 |
80 |
130 |
mV |
MPPT_Disable |
Threshold on VOC_SAMP to disable MPPT functionality |
|
VSTOR-15 mV |
|
|
V |
VBIAS |
Voltage node which is used as reference for the programmable voltage thresholds |
VIN_DC ≥ 0.5V; VSTOR ≥ 1.8 V |
1.21 |
1.25 |
1.27 |
V |