Datasheet

MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
______________________________________________________________________________________ 11
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
REG2 EFFICIENCY
vs. LOAD CURRENT (V
REG2
= 1.82V)
LOAD CURRENT (mA)
REG2 EFFICIENCY (%)
MAX8819A toc21
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
REG2 LOAD REGULATION
REG2 LOAD CURRENT (mA)
REG2 OUTPUT VOLTAGE (V)
MAX8819A toc22
0 50 100 150 200 250 300 350 400
1.80
1.81
1.82
1.83
1.84
1.85
1.86
REG3 EFFICIENCY
vs. LOAD CURRENT (V
REG3
= 1.21V)
LOAD CURRENT (mA)
REG3 EFFICIENCY (%)
MAX8819A toc23
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
REG3 LOAD REGULATION
REG3 LOAD CURRENT (mA)
REG3 OUTPUT VOLTAGE (V)
MAX8819A toc24
0 50 100 150 200 250 300 350 400
1.185
1.190
1.195
1.200
1.205
1.210
1.215
1.220
1.225
REG3 HEAVY-LOAD SWITCHING
WAVEFORMS
MAX8819A toc26
400ns/div
20mV/div
AC-COUPLED
2V/div
0V
0mA
200mA/div
V
OUT3
V
LX3
I
LX3
200mA LOAD
REG3 LIGHT-LOAD SWITCHING
WAVEFORMS
MAX8819A toc25
2μs/div
20mV/div
AC-COUPLED
2V/div
0V
0mA
100mA/div
V
OUT3
V
LX3
I
LX3
20mA LOAD
REG3 LOAD TRANSIENT
MAX8819A toc27
200μs/div
100mA/div
100mV/div
1.2V DC OFFSET
30mA 30mA
320mA
I
OUT3
V
OUT3