Manual

MAX17101
Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
_______________________________________________________________________________________ 7
ELECTRICAL CHARACTERISTICS
(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
= -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INPUT SUPPLIES
IN Standby Supply Current I
IN(STBY)
V
IN
= 6V to 24V, ON1 = ON2 = GND,
ONLDO = V
CC
200 μA
IN Shutdown Supply Current I
IN(SHDN)
V
IN
= 4.5V to 24V, ON1 = ON2 = ONLDO = GND 70 μA
IN Supply Current I
IN
ON1 = ON2 = REFIN2 = V
CC
,
SKI P = FB1 = GND, V
OUT2
= 3.5V, V
OUT1
= 5.3V
0.2 mA
V
CC
Supply Current I
CC
ON1 = ON2 = REFIN2 = V
CC
,
SKI P = FB1 = GND, V
OUT2
= 3.5V, V
OUT1
= 5.3V
1.5 mA
PWM CONTROLLERS
5V preset output: FB1 = GND,
V
IN
= 12V, SKIP = V
CC
4.90 5.10
V
OUT1
1.5V preset output: FB1 = V
CC
(5V),
V
IN
= 12V, SKIP = V
CC
1.47 1.53
OUT1 Output-Voltage Accuracy
(Note 1)
V
FB1
Adjustable feedback output,
V
IN
= 12V, SKIP = V
CC
0.685 0.715
V
OUT1 Voltage-Adjust Range 0.7 5.5 V
Low 0.040 0.125
FB1 Dual Mode Threshold
Voltage
High
V
CC
-
1.6V
V
CC
-
0.7V
V
3.3V preset output: REFIN2 = V
CC
(5V), V
IN
=
12V, SKIP = V
CC
3.234 3.366
1.05V preset output: REFIN2 = RTC (3.3V),
V
IN
= 1.2V, SKIP = V
CC
1.029 1.071
OUT2 Output-Voltage Accuracy
(Note 1)
V
OUT2
Tracking output: V
REFIN2
= 1.1V,
V
IN
= 12V, SKIP = V
CC
1.085 1.115
V
OUT2 Voltage-Adjust Range 0 2 V
REFIN2 Voltage-Adjust Range 0 2 V
Low (REFIN2 = RTC) 2.2 3.0
REFIN2 Dual Mode Threshold
Voltage
High (REFIN2 = V
CC
)
V
CC
-
1.2V
V
CC
-
0.4V
V
TON = GND or REF
(400kHz)
895 1209
DH1 On-Time t
ON1
V
IN
= 12V,
V
OUT1
= 5.0V (Note 2)
TON = REF or V
CC
(300kHz)
833 1017
ns
Minimum Off-Time t
OFF(MIN)
(Note 2) 450 ns
SECFB Threshold Voltage V
SECFB
1.92 2.08 V