Electrical characteristics (continued) – Rainbow Electronics MAX17101 User Manual
Page 3
MAX17101
Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, no load on LDO, RTC, OUT1, OUT2, and REF, V
IN
= 12V, V
DD
= V
CC
= V
SECFB
= 5V, V
REFIN2
= 1.0V, BYP =
LDOSEL = GND, ONLDO = IN, 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
3.3V preset output: REFIN2 = V
CC
(5V),
V
IN
= 12V,
SKIP = V
CC
3.255 3.30 3.345
1.05V preset output: REFIN2 = RTC (3.3V),
V
IN
= 12V,
SKIP = V
CC
1.038 1.050 1.062
OUT2 Output-Voltage Accuracy
(Note 1)
V
OUT2
Tracking output: V
REFIN2
= 1.1V,
V
IN
= 12V,
SKIP = V
CC
1.09 1.10 1.11
V
OUT2 Voltage-Adjust Range
0.8
2.0
V
REFIN2
Voltage-Adjust
Range
0 2 V
V
REFIN2
= 2.2V, T
A
= +25°C
-0.1
+0.1
REFIN2 Input Bias Current
I
REFIN2
V
REFIN2
= 0V, T
A
= +25°C
-0.5
+0.1
μA
Low (REFIN2 = RTC)
2.2
3.0
REFIN2 Dual Mode Threshold
Voltage Levels
High (REFIN2 = V
CC
)
V
CC
-
1.0V
V
CC
-
0.4V
V
Either SMPS,
SKIP = V
CC
, I
LOAD
= 0 to 5A
-0.1
Either SMPS,
SKIP = REF, I
LOAD
= 0 to 5A
-1.7
Load Regulation Error
Either SMPS,
SKIP = GND, I
LOAD
= 0 to 5A
-1.5
%
Line Regulation Error
Either SMPS, V
IN
= 6V to 24V
0.005
%/V
TON = GND or REF
(400kHz)
895 1052 1209
DH1 On-Time
t
ON1
V
IN
= 12V,
V
OUT1
= 5.0V
(Note 2)
TON = V
CC
(200kHz) 2105
ns
TON = GND (500kHz)
555
DH2 On-Time
t
ON2
V
IN
= 12V,
V
OUT2
= 3.3V
(Note 2)
TON = REF or V
CC
(300kHz)
833 925 1017
ns
Minimum Off-Time
t
OFF(MIN)
(Note 2)
300
400
ns
Soft-Start/Stop Slew Rate
t
SS
Rising/falling edge on ON1 or ON2 (preset)
1
ms
Soft-Start/Stop Slew Rate
t
SS
Rising/falling edge on ON2 (REFIN2 ADJ)
1
mV/μs
Dynamic REFIN2 Slew Rate
t
DYN
Rising edge on REFIN2
8
mV/μs
Ultrasonic Operating Frequency f
SW(USONIC)
SKIP = open (REF)
20
27
kHz
SECFB Threshold Voltage
V
SECFB
1.94 2.0 2.06 V
SECFB Input Bias Current
I
SECFB
V
SECFB
= 2.2V, T
A
= +25°C
-0.2
+0.2
μA
LINEAR REGULATOR (LDO)
V
IN
= 24V, LDOSEL = BYP = GND,
0 < I
LDO
< 100mA
4.90 5.0 5.10
LDO Output-Voltage Accuracy
V
LDO
V
IN
= 24V, LDOSEL = V
CC
, BYP = GND,
0 < I
LDO
< 100mA
3.23 3.3 3.37
V
LDOSEL
low
0.1 0.15 0.2
LDOSEL Dual Mode Threshold
Voltage Levels
LDOSEL high
V
CC
-
0.9V
V