Rainbow Electronics MAX17031 - Manual (Page 6)

MAX17031
Dual Quick-PWM Step-Down Controller with Low-
Power LDO and RTC Regulator for MAIN Supplies
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 2, no load on LDO5, RTC, OUT1, OUT2, and REF, V IN = 12V, V DD = V CC = V SKIP = 5V, ONLDO = RTC, ON1 = ON2
= V CC , T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25 °C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LINEAR REGULATOR (LDO5)
LDO5 Output-Voltage Accuracy V LDO5
V IN = 6V to 24V, ON1 = GND;
0mA < I LDO5 < 100mA
4.85 5.15 V
LDO5 Short-Circuit Current LDO5 = GND 260 mA
LDO5 Regulation Reduction/
Bootstrap Switchover Threshold
Falling edge of OUT1 -12.0 -5.0 %
LDO5 Bootstrap Switch
Resistance
LDO5 to OUT1, V OUT1 = 5V (Note 3) 4.5
V CC Undervoltage Lockout
Threshold
Falling edge of V CC , PWM disabled below
this threshold
3.8 4.3 V
3.3V ALWAYS-ON LINEAR REGULATOR (RTC)
ON1 = ON2 = GND, V
IN
= 6V to 24V,
0 < I RTC < 5mA
3.18 3.45
RTC Output-Voltage Accuracy V RTC
ON1 = ON2 = ONLDO = GND, V IN = 6V to
24V, 0 < I RTC < 5mA
3.16 3.50
V
RTC Short-Circuit Current RTC = GND 5 22 mA
REFERENCE (REF)
Reference Voltage V REF V CC = 4.5V to 5.5V, I REF = 0 1.975 2.025 V
Reference Load Regulation Error V REF I REF = -20µA to +50µA -10 +10 mV
OUT1 FAULT DETECTION
OUT1 Overvoltage and
PGOOD Trip Threshold
With respect to error comparator threshold 10 16 %
OUT1 Undervoltage
Protection Trip Threshold
With respect to error comparator threshold 63 77 %
OUT2 FAULT DETECTION
OUT2 Overvoltage and
PGOOD Trip Threshold
With respect to error comparator threshold 10 16 %
OUT2 Undervoltage
Protection Trip Threshold
With respect to error comparator threshold 63 77 %
POWER-GOOD
PGOOD Lower Trip Threshold
With respect to either error comparator
threshold, falling edge, hysteresis = 1%
-16 -10 %
PGOOD Output Low Voltage
ON1 or ON2 = GND (PGOOD low
impedance), I
SINK = 4mA
0.3 V