Datasheet

MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
System Undervoltage Lockout
Threshold
V
UVLO_SYS
V
SYS
falling, 100mV hysteresis 2.45 2.5 2.55 V
BAT-to-SYS Reverse Regulation
Voltage
V
BSREG
DC and BAT are delivering current to SYS;
I
BAT
= 95mA; V
DC
= 4.3V,
MAX8819A/MAX8819C (only)
50 66 90 mV
V
DC
= 0V, EN123 = low, EN4 = low,
V
BAT
= 4V
10 20
V
DC
= 5V, DLIM[1:2] ≠ 11, EN123 = low,
EN4 = low, V
BAT
= 4V
010
V
DC
= 0V, EN123 = high, EN4 = low,
V
BAT
= 4V (step-down converters are not in
dropout)
128 290
Quiescent Current
I
SYS
+
I
PV13
+
I
PV2
V
DC
= 0V, EN123 = high, EN4 = high,
V
BAT
= 4V (step-down converters are not in
dropout)
362 730
μA
BATTERY CHARGER (V
DC
= 5.0V)
BAT-to-SYS On-Resistance R
BS
V
DC
= 0V, V
BAT
= 4.2V, I
SYS
= 0.9A 0.073 0.165 Ω
T
A
= +25°C 4.174 4.200 4.221
BAT Regulation Voltage
(Figure 2)
V
BATREG
T
A
= -40°C to +85°C 4.158 4.200 4.242
V
BAT Recharge Threshold (Note 4) -135 -100 -65 mV
BAT Prequalification Threshold V
BATPRQ
V
BAT
rising, 180mV hysteresis, Figure 2 2.9 3.0 3.1 V
R
CISET
Resistance Range
Guaranteed by BAT fast-charge current
limit
315kΩ
CISET Voltage V
CISET
R
CISET
= 7.5kΩ, I
BAT
= 267mA 0.9 1.0 1.1 V
DLIM[1:2] = 10, R
CISET
= 3kΩ 87 92 100
DLIM[1:2] = 01, R
CISET
= 3kΩ 450 472 500
DLIM[1:2] = 00, R
CISET
= 15kΩ 170 200 230
DLIM[1:2] = 00, R
CISET
= 7.5kΩ 375 400 425
BAT Fast-Charge Current Limit I
CHGMAX
DLIM[1:2] = 00, R
CISET
= 3.74kΩ 740 802 860
mA
BAT Prequalification Current I
PREQUAL
V
BAT
= 2.5V, R
CISET
= 3.74kΩ 60 82 105 mA
Top-Off Threshold (Note 5) I
TOPOFF
T
A
= +25°C, R
CISET
= 3.74kΩ 60 82 105 mA
V
DC
= 0V, EN123 = low, EN4 = low,
CEN = low, V
BAT
= 4V
10 20
BAT Leakage Current
V
DC
= 5V, DLIM[1:2] = 11, EN123 = low,
EN4 = low, V
BAT
= 4V
0
μA
ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; V
EP
= V
GND
= 0V, V
BAT
= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, V
FB1
= V
FB2
= V
FB3
= 1.1V, V
FB4
= 0.6V,
PV13 = PV2 = SYS, T
A
= -40°C to +85°C, capacitors as shown in Figure 1, R
CISET
= 3kΩ, unless otherwise noted.) (Note 3)