Typical operating characteristics (continued) – Rainbow Electronics MAX8649 User Manual
Page 7
MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
_______________________________________________________________________________________
7
NO-LOAD SUPPLY CURRENT vs.
SUPPLY VOLTAGE (FORCED PWM)
MAX8649 toc10
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
4.5
3.5
2
4
6
8
10
12
14
16
18
20
0
2.5
5.5
NO SYNC
26MHz SYNC
1.6
1.2
0.8
0.4
0
2.0
1.27
1.28
1.29
1.30
1.31
1.32
1.26
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
MAX8649 toc11
OUTPUT VOLTAGE vs. LOAD CURRENT
V
OUT
= 1.3V
TA = +35
°
C
TA = +85
°
C
TA = -40
°
C
POWER SAVE
OUTPUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (A)
OUTPUT VOLTATGE (V)
1.5
1.2
0.9
0.6
0.3
1.090
1.095
1.100
1.105
1.110
1.115
1.085
0
1.8
MAX8649 toc12
V
OUT
= 1.1V
FORCED PWM
POWER SAVE
OUTPUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (A)
OUTPUT VOLTATGE (V)
1.5
1.2
0.9
0.6
0.3
0.885
0.890
0.895
0.900
0.905
0.910
0.880
0
1.8
MAX8649 toc13
V
OUT
= 0.9V
FORCED PWM
POWER SAVE
LIGHT LOAD SWITCHING WAVEFORMS
MAX8649 toc14
2V/div
20mV/div
200mA/div
V
OUT
V
LX
I
L
2μs/div
10mA LOAD, V
OUT
= 1.3V
MEDIUM LOAD SWITCHING
WAVEFORMS
MAX8649 toc15
2V/div
20mV/div
500mA/div
V
OUT
V
LX
I
L
200ns/div
500mA LOAD
V
OUT
= 1.3V
HEAVY LOAD SWITCHING WAVEFORMS
MAX8649 toc16
2V/div
20mV/div
1A/div
V
OUT
V
LX
I
L
200ns/div
1.8A LOAD
V
OUT
= 1.3V
Typical Operating Characteristics (continued)
(
Typical Operating Circuit, V
IN1
= V
IN2
= 3.6V, V
AGND
= V
PGND
= 0V, V
OUT
= 1.1V, V
DD
= 1.8V, T
A
= +25°C, unless otherwise noted.)