MAX8819A MAXIM [Maxim Integrated Products], MAX8819A Datasheet - Page 5

• Manufacturer Part Number: MAX8819A
• Description: PMIC with Integrated Chargers and Smart Power Selector in a 4mm x 4mm TQFN
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; V
PV13 = PV2 = SYS, T
Skip-Mode Transition Current
n-Channel Zero-Crossing
Threshold
Maximum Duty Cycle
Minimum Duty Cycle
PWM Frequency
Internal Discharge Resistance in
Shutdown
REG2–SYNCHRONOUS STEP-DOWN CONVERTER
Input Voltage
Maximum Output Current
Short-Circuit Current
Short-Circuit Detection Threshold
Short-Circuit Foldback Frequency
FB2 Voltage
Output Voltage Range
FB2 Leakage Current
Load Regulation
Line Regulation
p-Channel On-Resistance
n-Channel On-Resistance
p-Channel Current-Limit
Threshold
Skip-Mode Transition Current
n-Channel Zero-Crossing
Threshold
Maximum Duty Cycle
Minimum Duty Cycle
PWM Frequency
Internal Discharge Resistance in
Shutdown
REG2 Disable
REG3–SYNCHRONOUS STEP-DOWN CONVERTER
Input Voltage
PARAMETER
PMIC with Integrated Chargers and Smart
_______________________________________________________________________________________
A
= -40°C to +85°C, capacitors as shown in Figure 1, R
EP
Power Selector in a 4mm x 4mm TQFN
= V
GND
= 0V, V
SYMBOL
∆I
f
f
OSC
OSC
SYS
BAT
= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, V
(Note 8)
EN123 = low, resistance from LX1 to PG1
PV2 supplied from SYS
L = 4.7µH,
R
(Note 6)
L = 4.7µH, R
(Note 7)
V
I
(Note 9)
V
V
MAX8819A/MAX8819B
MAX8819C
(Note 8)
EN123 = low, resistance from LX2 to PG2
V
PV13 supplied from SYS
OUT2
FB2
PV2
PV2
PV2
LSR
= 4.0V, I
= 4.0V, I
= 0V, REG2 disabled (Note 10)
= 1.01V
= 0.13Ω
= 100mA to 300mA
LSR
LX2
LX2
CONDITIONS
= 0.13Ω
= 180mA
= 180mA
MAX8819A/MAX8819B
MAX8819C
T
T
A
A
= +25°C
= +85°C
CISET
= 3kΩ, unless otherwise noted.) (Note 3)
FB1
0.997
0.512
0.565
= V
MIN
100
300
500
100
1.8
-50
1.8
1
FB2
= V
f
1.012
0.550
0.600
OSC
V
V
TYP
12.5
12.5
600
230
290
200
2.0
1.0
-50
2.0
1.0
-25
80
10
80
10
SYS
-5
SYS
1
1
FB3
/3
= 1.1V, V
1.028
0.595
0.700
MAX
V
+50
2.2
2.2
SYS
FB4
UNITS
MHz
MHz
= 0.6V,
%/D
mΩ
mΩ
mA
mA
mA
mA
mV
mA
mA
kΩ
kΩ
Hz
nA
µA
%
%
%
%
%
V
V
V
A
V
5