Datasheet

MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
10 ______________________________________________________________________________________
REG1 LOAD REGULATION
REG1 LOAD CURRENT (mA)
REG1 OUTPUT VOLTAGE (V)
MAX8819A toc15
0 50 100 150 200 250 300 350 400
2.99
3.00
3.01
3.02
3.03
3.04
3.05
3.06
3.07
3.08
3.09
REG1 DROPOUT VOLTAGE
vs. LOAD CURRENT
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
MAX8819A toc16
0 50 100 150 200 250 300 350 400 450
0
50
100
150
200
250
V
OUT1
= 3V
V
OUT1
= 3.3V
SYS IS 100mV BELOW THE
REG1 NOMINAL
REGULATION
VOLTAGE
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
REG1 LIGHT-LOAD SWITCHING
WAVEFORMS
MAX8819A toc17
2μs/div
20mV/div
AC-COUPLED
0V
0mA
2V/div
100mA/div
I
LX1
V
LX1
V
OUT1
20mA LOAD
REG1 HEAVY-LOAD SWITCHING
WAVEFORMS
MAX8819A toc18
400ns/div
20mV/div
AC-COUPLED
0V
0mA
2V/div
200mA/div
I
LX1
V
LX1
V
OUT1
200mA LOAD
LINE TRANSIENT
MAX8819A toc19
100μs/div
4V 4V
5V
2V/div
50mV/div
AC-COUPLED
V
OUT1
V
SYS
V
OUT1
= 3V
I
OUT1
= 30mA
REG1 LOAD TRANSIENT (V
OUT
= 3V)
MAX8819A toc20
200μs/div
30mA
300mA
30mA
100mA/div
100mV/div
3V DC OFFSET
V
OUT1
I
OUT1