MAX746ESE Ver la hoja de datos (PDF) - Maxim Integrated
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Fabricante
MAX746ESE Datasheet PDF : 16 Pages
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High-Efficiency, PWM, Step-Down,
N-Channel DC-DC Controller
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 10V, ILOAD = 0A, IREF = 0µA, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
Maximum Duty Cycle
SYMBOL
V+ = 6V
CONDITIONS
Charge-Pump Output Voltage
Current-Sense Amplifier
Current-Limit Threshold
VHIGH IHIGH = 0mA to 10mA
VLIMIT V+ – CS
EXT Output High
EXT Output Low
EXT Sink Current
EXT Source Current
Compensation Pin Impedance
VHIGH forced to 15V, IEXT = -1mA
VHIGH forced to 15V, IEXT = 1mA
VHIGH = 15V, VEXT = 12.5V
VHIGH = 15V, VEXT = 2.5V
LBI Threshold Voltage
LBI falling
MAX746C
MAX746E/M
LBO Output Voltage Low
LBI Input Leakage Current
VOL
ISINK = 0.5mA
LBI = 2.5V
LBO Output Leakage Current
V+ = 15V, LBO = 15V, LBI = 2.5V
SHDN Input Voltage Low
VIL
SHDN Input Voltage High
VIH
SHDN Input Leakage Current
SHDN = 10V
MIN TYP MAX
91
96
V+ + 4 V+ + 5 V+ + 6
125
150 175
VHIGH - 0.1
0.25
160
270
24
1.97 2.00 2.03
1.96 2.00 2.04
0.4
100
1
0.4
2.0
0.1 100
UNITS
%
V
mV
V
V
mA
mA
kΩ
V
V
nA
µA
V
V
nA
Note 1: The soft-start fault current is the current sink capability of SS when VREF < 1V or when the device is in shutdown.
Note 2: ISUPP is the supply current drawn by V+, which includes the current drawn by the charge pump. The charge pump
doubles the current drawn by HIGH from the V+ input, so ISUPP = IV+ + 2IHIGH.
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