MAX17101 查看數據表（PDF） - Maxim Integrated
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MAX17101 Datasheet PDF : 31 Pages
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Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, no load on LDO, RTC, OUT1, OUT2, and REF, VIN = 12V, VDD = VCC = VSECFB = 5V, VREFIN2 = 1.0V, BYP =
LDOSEL = GND, ONLDO = IN, ON1 = ON2 = VCC, TA = -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
LINEAR REGULATOR (LDO)
LDO Output-Voltage Accuracy
LDOSEL Dual Mode
Voltage Level
VLDO
VIN = 24V, LDOSEL = BYP = GND,
0 < ILDO < 100mA
VIN = 24V, LDOSEL = VCC, BYP = GND,
0 < ILDO < 100mA
LDOSEL low
LDOSEL high
4.85
3.20
VCC -
0.9V
5.15
V
3.40
0.25
V
LDO Short-Circuit Current
LDO Regulation Reduction/
Bypass Switchover Threshold
IILIM(LDO) LDO = GND
Falling edge of BYP
260
mA
-12
-5
%
VCC Undervoltage-Lockout
Threshold
VUVLO(VCC)
Falling edge of VCC,
PWM disabled below this threshold
3.8
4.3
V
3.3V ALWAYS-ON LINEAR REGULATOR (RTC)
RTC Output-Voltage Accuracy
RTC Short-Circuit Current
REFERENCE (REF)
VRTC
IILIM(RTC)
ON1 = ON2 = GND, VIN = 6V to 24V,
0 < IRTC < 5mA
ON1 = ON2 = ONLDO = GND,
VIN = 6V to 24V, 0 < IRTC < 5mA
RTC = GND
3.18
3.16
5
3.45
V
3.50
mA
Reference Voltage
Reference Load-Regulation Error
OUT1 FAULT DETECTION
VREF
VREF
VCC = 4.5V to 5.5V, IREF = 0
IREF = -20μA to +50μA
1.975
-10
2.025
V
+10
mV
OUT1 Overvoltage Trip Threshold VOVP(OUT1) With respect to error-comparator threshold
10
OUT1 Undervoltage-Protection
Trip Threshold
VUVP(OUT1) With respect to error-comparator threshold
60
20
%
80
%
PGOOD1 Lower Trip Threshold
With respect to error-comparator threshold,
falling edge, hysteresis = 1%
-20
-10
%
PGOOD1 Output-Low Voltage
OUT2 FAULT DETECTION
VFB1 = 0.56V (PGOOD1 low impedance),
ISINK = 4mA
0.4
V
OUT2 Overvoltage Trip Threshold VOVP(OUT2) With respect to error-comparator threshold
10
20
%
8 _______________________________________________________________________________________
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