MAX8649(2009) Ver la hoja de datos (PDF) - Maxim Integrated
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componentes Descripción
Fabricante
MAX8649 Datasheet PDF : 31 Pages
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1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
Typical Operating Characteristics (continued)
(Typical Operating Circuit, VIN1 = VIN2 = 3.6V, VAGND = VPGND = 0V, VOUT = 1.1V, VDD = 1.8V, TA = +25°C, unless otherwise noted.)
NO-LOAD SUPPLY CURRENT vs.
SUPPLY VOLTAGE (FORCED PWM)
20
18
NO SYNC
16
14
12
10
26MHz SYNC
8
6
4
2
0
2.5
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE vs. LOAD CURRENT
1.32
1.31
TA = +35°C
TA = +85°C
1.30
1.29
TA = -40°C
1.28
POWER SAVE
1.27
VOUT = 1.3V
1.26
0
0.4 0.8 1.2 1.6 2.0
LOAD CURRENT (A)
OUTPUT VOLTAGE vs. LOAD CURRENT
1.115
1.110
1.105
FORCED PWM
1.100
1.095
POWER SAVE
1.090
1.085
0
VOUT = 1.1V
0.3 0.6 0.9 1.2 1.5 1.8
LOAD CURRENT (A)
OUTPUT VOLTAGE vs. LOAD CURRENT
0.910
FORCED PWM
0.905
LIGHT LOAD SWITCHING WAVEFORMS
MAX8649 toc14
VOUT
20mV/div
0.900
0.895
0.890 POWER SAVE
VLX
2V/div
0.885
0.880
0
VOUT = 0.9V
0.3 0.6 0.9 1.2 1.5 1.8
LOAD CURRENT (A)
IL
10mA LOAD, VOUT = 1.3V
2μs/div
200mA/div
MEDIUM LOAD SWITCHING
WAVEFORMS
MAX8649 toc15
VOUT
20mV/div
HEAVY LOAD SWITCHING WAVEFORMS
MAX8649 toc16
VOUT
20mV/div
VLX
IL 500mA LOAD
VOUT = 1.3V
200ns/div
2V/div
500mA/div
VLX
IL
1.8A LOAD
VOUT = 1.3V
200ns/div
2V/div
1A/div
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