Datasheet

MAX8660/MAX8660A/MAX8660B/MAX8661
High-Efficiency, Low-I
Q
, PMICs with Dynamic
Voltage Management for Mobile Applications
14
Typical Operating Characteristics (continued)
(Circuit of Figure 3, V
IN
= 3.6V, T
A
= +25°C, unless otherwise noted.)
REG3 OUTPUT VOLTAGE vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
MAX8660 toc28
-40 -15 10 35 60 85
1.30
1.32
1.34
1.36
1.38
1.40
1.42
1.44
1.46
1.48
1.50
I
LOAD
= 1000mA
REG3 VOLTAGE CHANGE RESPONSE
MAX8660 toc29
500mV/div
500mV/div
V3
RISING
V3
FALLING
100µs/div
ACTIVE RAMP-DOWN ENABLED
R
RAMP
= 56kΩ
R
RAMP
= 248kΩ
R
RAMP
= 248kΩ
R
RAMP
= 56kΩ
1.8V
1.8V
0.725V
0.725V
REG3 LOAD TRANSIENT
MAX8660 toc30
50mV/div
500mA/div
V3
I
V3
20µs/div
10mA
900mA
REG3 HEAVY-LOAD SWITCHING WAVEFORMS
MAX8660 toc31
2V/div
2mV/div
1A/div
0A
V
LX3
V3
I
L3
400ns/div
1500mA LOAD
REG3 LIGHT-LOAD SWITCHING WAVEFORMS
MAX8660 toc32
2V/div
20mV/div
200mA/div
0A
V
LX3
V3
I
L3
2µs/div
30mA LOAD
REG3
EFFICIENCY vs. LOAD CURRENT
LOAD CURRENT (mA)
EFFICIENCY (%)
MAX8660 toc24
50
55
60
65
70
75
80
85
90
0.01 0.1 1 10 100 1000 10,000
L3 = 1.2µH
(TOKO DE2812C)
V3 = 1.4V
V
IN
= 4.2V
V
IN
= 3.6V
FORCED-PWM
NORMAL
REG3 OUTPUT VOLTAGE
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
MAX8660 toc25
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
1.35
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.44
1.45
I
LOAD
= 1000mA
REG3 LINE TRANSIENT
MAX8660 toc26
50mV/div
1V/div
V
IN
V3
40µs/div
800mA LOAD, V3 = 1.4V
5.0V
3.6V
REG3 LOAD REGULATION
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
MAX8660 toc27
0 200 400 600 800 1000 1200 1400 1600
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.44
V
IN
= 3.6V
FORCED-PWM
NORMAL