Datasheet

4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OSCILLATOR (RTCT)
Oscillator Frequency Range f
OSC
f
OSC
= 2 x f
OUT
for MAX15004A/B,
f
OSC
= f
OUT
for MAX15005A/B
15 1000 kHz
RTCT Peak Trip Level V
TH,RTCT
0.55 x V
REG5
V
RTCT Valley Trip Level V
TL,RTCT
0.1 x V
REG5
V
RTCT Discharge Current I
DIS,RTCT
V
RTCT
= 2V 1.30 1.33 1.36 mA
RT = 13.7kΩ, CT = 4.7nF,
f
OSC
(typ) = 18kHz
-4 +4
RT = 13.7kΩ, CT = 560pF,
f
OSC
(typ) = 150kHz
-4 +4
RT = 21kΩ, CT = 100pF,
f
OSC
(typ) = 500kHz
-5 +5
Oscillator Frequency Accuracy
(Note 2)
RT = 7kΩ, CT = 100pF,
f
OSC
(typ) = 1MHz
-7 +7
%
MAX15004A/B 50
Maximum PWM Duty Cycle
(Note 3)
D
MAX
MAX15005A/B,
RT = 13.7kΩ, CT = 560pF,
f
OSC
(typ) = 150kHz
78.5 80 81.5
%
Minimum On-Time t
ON-MIN
V
IN
= 14V 110 170 ns
SYNC Lock-In Frequency Range
(Note 4)
RT = 13.7kΩ, CT = 560pF,
f
OSC
(typ) = 150kHz
102 200 %f
OSC
SYNC High-Level Voltage V
IH-SYNC
2V
SYNC Low-Level Voltage V
IL-SYNC
0.8 V
SYNC Input Current I
SYNC
V
SYNC
= 0 to 5V -0.5 +0.5 μA
SYNC Minimum Input Pulse Width 50 ns
ERROR AMPLIFIER/SOFT-START
Soft-Start Charging Current I
SS
V
SS
= 0V 8 15 21 μA
SS Reference Voltage V
SS
1.215 1.228 1.240 V
SS Threshold for HICCUP Enable V
SS
rising 1.1 V
FB Regulation Voltage V
REF-FB
COMP = FB,
I
COMP
= -500μA to +500μA
1.215 1.228 1.240 V
FB Input Offset Voltage V
OS-FB
COMP = 0.25V to 4.5V,
I
COMP
= -500μA to +500μA,
V
SS
= 0 to 1.5V
-5 +5 mV
FB Input Current V
FB
= 0 to 1.5V -300 +300 nA
COMP Sink Current I
COMP-SINK
V
FB
= 1.5V, V
COMP
= 0.25V 3 5.5 mA
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 14V, C
IN
= 0.1μF, C
VCC
= 0.1μF // 1μF, C
REG5
= 1μF, V
ON/OFF
= 5V, C
SS
= 0.01μF, C
SLOPE
= 100pF, RT = 13.7kΩ, CT =
560pF, V
SYNC
= V
OVI
= V
FB
= V
CS
= 0V, COMP = unconnected, OUT = unconnected. T
A
= T
J
= -40°C to +125°C, unless otherwise
noted. Typical values are at T
A
= +25°C. All voltages are referenced to PGND, unless otherwise noted.) (Note 1) (Figure 5)
MAX15004A/B/MAX15005A/B
3
Maxim Integrated