MAX8649 Maxim Integrated Products, MAX8649 Datasheet - Page 6

• Manufacturer Part Number: MAX8649
• Description: 1.8A Step-Down Regulator
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
( Typical Operating Circuit , V
6
100
100
3.5
3.0
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
_______________________________________________________________________________________
0
0
0
0.0001
0.0001
0
POWER SAVE
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
POWER SAVE
(0.9V OUTPUT, 26MHz SYNC)
0.3
0.001
0.001
FORCED PWM
(0.9V OUTPUT, SYNC OFF)
POWER SAVE
SWITCHING FREQUENCY
TRANSITION TO PWM
vs. LOAD CURRENT
LOAD CURRENT (A)
LOAD CURRENT (A)
0.6
LOAD CURRENT (A)
0.01
0.01
0.9
FORCED PWM
FORCED PWM
0.1
0.1
V
V
1.2
IN1
IN
OUT
= 3.6V
V
V
IN
IN
= V
= 1.3V
1
1
= 3.2V
= 3.2V
1.5
3.6V
4.2V
3.6V
4.2V
IN2
= 3.6V, V
1.8
10
10
AGND
100
100
3.6
3.5
3.4
3.3
3.2
3.1
3.0
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.0001
0.0001
-40
POWER SAVE
= V
NO SYNC
1.3V OUTPUT, 500mA LOAD
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
(1.1V OUTPUT, 26MHz SYNC)
POWER SAVE
0.001
0.001
(1.1V OUTPUT, SYNC OFF)
PGND
-15
SWITCHING FREQUENCY
vs. TEMPERATURE
LOAD CURRENT (A)
LOAD CURRENT (A)
TEMPERATURE (°C)
= 0V, V
0.01
0.01
10
FORCED PWM
FORCED PWM
OUT
0.1
0.1
Typical Operating Characteristics
35
= 1.1V, V
V
V
IN
IN
60
1
1
= 3.2V
= 3.2V
3.6V
4.2V
3.6V
4.2V
10
10
85
DD
= 1.8V, T
100
100
0.6
0.5
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.0001
0.0001
2.5
A
POWER SAVE
= +25°C, unless otherwise noted.)
SUPPLY VOLTAGE (POWER SAVE)
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
NO-LOAD SUPPLY CURRENT vs.
POWER SAVE
(1.3V OUTPUT, 26MHz SYNC)
0.001
0.001
(1.3V OUTPUT, SYNC OFF)
26MHz SYNC
SUPPLY VOLTAGE (V)
LOAD CURRENT (A)
LOAD CURRENT (A)
NO SYNC
3.5
0.01
0.01
FORCED PWM
FORCED PWM
0.1
0.1
4.5
V
V
IN
IN
1
1
= 3.2V
= 3.2V
3.6V
4.2V
3.6V
4.2V
5.5
10
10