MAX8646 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8646 Datasheet PDF : 16 Pages
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6A, 2MHz Step-Down Regulator
with Integrated Switches
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VDD = 3.3V, VFB = 0.5V, TA = -40°C to +85°C, typical values are at TA = +25°C, circuit of Figure 1, unless otherwise noted.)
(Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Error-Amplifier Unity-Gain
Bandwidth
Parallel 10kΩ, 40pF from COMP to GND (Note 3)
14
26
MHz
Error-Amplifier Common-Mode
Input Range
Error-Amplifier Minimum Output
Current
FB Input Bias Current
CTL_
CTL_ Input Bias Current
High-Z Threshold
Hysteresis
REFIN
REFIN Input Bias Current
VDD = 2.35V to 2.6V
VDD = 2.6V to 3.6V
VCOMP = 1V
Sourcing
Sinking
VFB = 0.7, CTL1 = CTL2 = GND, TA = +25°C
VCTL_ = 0V
VCTL_ = VDD
Rising
Falling
All VID transitions
VREFIN = 0.6V, TA = +25°C
0
0
1000
-500
-200
VDD - 1.65
V
VDD - 1.7
µA
-40
nA
-7
µA
+7
VDD - 1.2
0.75
V
50
mV
-500 -100
nA
REFIN Common-Mode Range
VDD = 2.3V to 2.6V
VDD = 2.6V to 3.6V
0
VDD -
1.65
V
0
VDD -
1.7
REFIN Offset Voltage
LX (All pins combined)
CTL1 = CTL2 = GND, TA = +25°C
-3
+3
mV
LX On-Resistance, High Side
ILX = -2A
VIN = VBST - VLX = 2.5V
VIN = VBST - VLX = 3.3V
27
mΩ
26
45
LX On-Resistance, Low Side
LX Current-Limit Threshold
ILX = 2A
VIN = 2.5V, high-side sourcing
VIN = 2.5V
VIN = 3.3V
24
mΩ
23
38
8
11
A
LX Leakage Current
VIN = 3.6V, VEN = VSS = 0V
TA = +25°C
VLX = 0V
VLX = 3.6V
-2
TA = +85°C
VLX = 0V
VLX = 3.6V
+2
µA
1
1
LX Switching Frequency
VIN = 2.5V to 3.3V
RFREQ = 50kΩ
RFREQ = 23.2kΩ
0.9
1
1.1
MHz
1.8
2
2.2
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