Datasheet

4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
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)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
COMP Source Current
I
COMP-
SOURCE
V
FB
= 1V, V
COMP
= 4.5V 1.3 2.8 mA
COMP High Voltage V
OH-COMP
V
FB
= 1V, I
COMP
= 1mA (sourcing)
V
REG5
- 0.5
V
REG5
- 0.2
V
COMP Low Voltage V
OL-COMP
V
FB
= 1.5V, I
COMP
= 1mA (sinking) 0.1 0.25 V
Open-Loop Gain A
EAMP
100 dB
Unity-Gain Bandwidth UGF
EAMP
1.6 MHz
Phase Margin PM
EAMP
75 degrees
COMP Positive Slew Rate SR+ 0.5 V/μs
COMP Negative Slew Rate SR- -0.5 V/μs
PWM COMPARATOR
Current-Sense Gain A
CS-PWM
ΔV
COMP
/ΔV
CS
(Note 5) 2.85 3 3.15 V/V
PWM Propagation Delay to OUT t
PD-PWM
CS = 0.15V, from V
COMP
falling edge:
3V to 0.5V to OUT falling (excluding
leading-edge blanking time)
60 ns
PWM Comparator Current-Sense
Leading-Edge Blanking Time
t
CS-BLANK
50 ns
CURRENT-LIMIT COMPARATOR
Current-Limit Threshold Voltage V
ILIM
290 305 317 mV
Current-Limit Input Bias Current I
B-CS
OUT= high, 0 ≤ V
CS
≤ 0.3V -2 +2 μA
ILIMIT Propagation Delay to OUT t
PD-ILIM
From CS rising above V
ILIM
(50mV
overdrive) to OUT falling (excluding
leading-edge blanking time)
60 ns
ILIM Comparator Current-Sense
Leading-Edge Blanking Time
t
CS-BLANK
50 ns
Number of Consecutive ILIMIT
Events to HICCUP
7
HICCUP Timeout 512
Clock
periods
SLOPE COMPENSATION (Note 6)
Slope Capacitor Charging
Current
I
SLOPE
V
SLOPE
= 100mV 9.8 10.5 11.2 μA
Slope Compensation C
SLOPE
= 100pF 25 mV/μs
Slope Compensation Tolerance
(Note 2)
C
SLOPE
= 100pF -4 +4 %
C
SLOPE
= 22pF 110
Slope Compensation Range
C
SLOPE
= 1000pF 2.5
mV/μs
MAX15004A/B/MAX15005A/B
4
Maxim Integrated