Rainbow Electronics MAX17031 - Manual (Page 5)

MAX17031
_______________________________________________________________________________________ 5
Dual Quick-PWM Step-Down Controller with Low-
Power LDO and RTC Regulator for MAIN Supplies
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 = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INPUTS AND OUTPUTS
Upper SKIP/PWM threshold falling edge,
33mV hysteresis
1.94 2.0 2.06
SKIP Input Thresholds
Lower PWM/ultrasonic threshold 0.4 1.6
V
SKIP Leakage Current V SKIP = 0 or 5V, T A = +25°C -1 +1 µA
High (SMPS on) 2.4
ON_ Input-Logic Levels ONLDO, ON1, ON2
Low (SMPS off) 0.8
V
ON_ Leakage Current
V ON1 = V ON2 = V ONLDO = 0 or 5V,
T A = +25°C
-2 +2 µA
V OUT1 = 5.3V 15 65
OUT_ Leakage Current V ON1 = V ON2 = V CC
V OUT2 = 3.5V 5 30
µA
ELECTRICAL CHARACTERISTICS
(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
INPUT SUPPLIES
IN Input Voltage Range LDO5 in regulation 6 24 V
IN Standby Supply Current
V
IN
= 6V to 24V, ON1 = ON2 = GND,
ONLDO = RTC
200 µA
IN Shutdown Supply Current
V IN = 4.5V to 24V,
ON1 = ON2 = ONLDO = GND
70 µA
IN Supply Current I IN
ON1 = ON2 = V
CC
, V
SKIP
= V
CC
,
V OUT1 = 5.3V, V OUT2 = 3.5V
0.2 mA
V CC Bias Supply Current I VCC
ON1 = ON2 = V CC , V SKIP = V CC ,
V OUT1 = 5.3V, V OUT2 = 3.5V
1.5 mA
PWM CONTROLLERS
OUT1 Output-Voltage Accuracy V OUT1 V SKIP = 1.8V 4.90 5.10 V
OUT2 Output-Voltage Accuracy V
OUT2
V
SKIP
= 1.8V 3.234 3.366 V
DH1 On-Time t ON1 V OUT1 = 5.0V (Note 1) 895 1209 ns
DH2 On-Time t ON2 V OUT2 = 3.3V (Note 1) 833 1017 ns
Minimum Off-Time t OFF(MIN) (Note 1) 400 ns
Ultrasonic Operating Frequency f SW(USONIC) V SKIP = GND 18 kHz