Datasheet
MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
10 ______________________________________________________________________________________
AC ADAPTER CONNECT (I
SYS
= 500mA)
MAX8662/63 toc18
400
µ
s/div
PEN1 = PEN2 = 1, CEN = 0,
V
BAT
= 4.0V, I
SYS
= 500mA, EN_ = 1
V
DC
I
IN
V
SYS
V
POK
V
CHG
I
BAT
NEGATIVE BATTERY CURRENT FLOWS
INTO THE BATTERY (CHARGING).
0V
0V
0mA
500mA
4.0V
4.4V
5V
5V/div
5V/div
5V/div
2V/div
1A/div
1A/div
5V
+1280mA
-780mA
USB DISCONNECTED (500mA USB)
MAX8662/63 toc19
200
µ
s/div
PEN1 = 0, PEN2 = 1, CEN = 0,
V
BAT
= 4.0V, I
SYS
= 0mA
V
DC
I
IN
V
SYS
V
CHG
I
BAT
0V
0mA
4.4V
5V
5V/div
5V/div
500mA/div
500mA/div
1V/div
475mA
-475mA
CHARGER ENABLE (I
SYS
= 0mA)
MAX8662/63 toc20
200
µ
s/div
PEN1 = 0, PEN2 = 1, V
BAT
= 4.0V, I
SYS
= 0mA, EN_ = 1
V
CEN
I
IN
V
SYS
V
CHG
I
BAT
2.8V
0V
0mA
0mA
5V
4.4V
0V
475mA
-475mA
5V/div
5V/div
500mA/div
2V/div
1A/div
OUT1 REGULATOR EFFICIENCY
vs. LOAD CURRENT
MAX8662/63 toc21
LOAD CURRENT (mA)
OUT1 REGULATOR EFFICIENCY (%)
1000100101
10
20
30
40
50
60
70
80
90
100
0
0.1 10,000
V
BAT
= 4.2V
V
BAT
= 3.6V
PWM = 0
PWM = 1
V
BAT
= 4.2V
V
BAT
= 3.6V
V
OUT1
= 3.3V
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
DC
= 5V, R
PSET
= 1.5kΩ, R
ISET
= 3kΩ, V
OUT1
= 3.3V, V
OUT2
= 1.3V, SL1 = SL2 = open, V
CEN
= 0V, V
PEN1
=
V
PEN2
= 5V, C
OUT1
= 2 x 10µF, C
OUT2
= 2 x 10µF, C
OUT3
= 0.1µF, C
OUT4
= 4.7µF, C
OUT5
= 1µF, C
OUT6
= 2.2µF, C
OUT7
= 1µF, CT =
0.068µF, C
REF
= C
VL
= 0.1µF, R
THM
= 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, V
GND
= V
PG1
= V
PG2
= V
PG3
= 0V, T
A
= +25°C,
unless otherwise noted.)
OUT1 REGULATOR LINE REGULATION
MAX8662/63 toc23
V
SYS
(V)
OUTPUT VOLTAGE (V)
5.14.73.9 4.33.53.1
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
2.5
2.7 5.5
R
LOAD
= 330Ω
OUT1 VOLTAGE vs. TEMPERATURE
MAX8662/63 toc24
AMBIENT TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
603510-15
3.294
3.298
3.302
3.306
3.310
3.290
-40 85
V
BAT
= 4.0V
R
LOAD
= 330
Ω
OUT1 REGULATOR LOAD REGULATION
MAX8662/63 toc22
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
1000100101
3.24
3.28
3.32
3.36
3.40
3.20
0.1 10,000
V
BAT
= 4.2V
V
BAT
= 3.6V