MAX8654ETX Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX8654ETX Datasheet PDF : 17 Pages
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12V, 8A 1.2MHz
Step-Down Regulator
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VEN = VVP = 12V, VVDL = 5V, VVL = 3.3V, VSYNC = 0V, VFB = 0.5V, TA = -40°C to +85°C, typical values are at TA = +25°C,
unless otherwise noted.)
PARAMETER
ERROR AMPLIFIER
FB Regulation Voltage
Open-Loop Voltage Gain
CONDITIONS
VP = VIN = 4.5V to 14V
1kΩ from COMP to GND
MIN TYP MAX UNITS
0.594 0.6 0.606
V
95
dB
Error-Amplifier Unity-Gain
Bandwidth
Parallel 10kΩ, 160pF from COMP to GND
20
MHz
Error-Amplifier Common-Mode
Input Range
0
1.5
V
Error-Amplifier Maximum Output
Current
FB Input Bias Current
REFIN
REFIN Input Bias Current
REFIN Common-Mode Range
LX (All Pins Combined)
LX On-Resistance, High Side
LX On-Resistance, Low Side
VCOMP = 1V
VFB = 0.6V
VREFIN = 0.6V
ILX = -180mA
ILX = 180mA
LX Current-Limit Threshold
RILIM = 100kΩ
RILIM Range
LX Leakage Current
VEN = 0V
LX Switching Frequency
RFREQ Range
LX Minimum On-Time
Maximum RMS LX Output Current
EN/SS
EN Input Logic-Low Threshold
EN Input Logic-High Threshold
EN Input Current
SS Current
REFIN Discharge Resistance
(Note 2)
VEN = 0V
VEN = 14V
VSS = 0.45V
VBST - VLX = 5V
Sourcing
Sinking
VLX = 14V = VIN
VLX = 0V, VIN = 14V
RFREQ = 50kΩ
RFREQ = 100kΩ
1
mA
-35
nA
-60
nA
0
1.5
V
36
64
mΩ
25
40
mΩ
7
8
10
A
7
8
10
40
200
kΩ
+50
µA
-50
0.85
1
1.1
MHz
0.45
0.5
0.55
50
200
kΩ
80
ns
10.5
A
0.6
V
1.2
V
-1
µA
7
-10
-8
-6
µA
500
Ω
Current-Limit Startup Blanking
110
Clock
cycles
Restart Time
900
Clock
cycles
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