Rainbow Electronics MAX15001 - Manual (Page 6)

MAX15000/MAX15001
Current-Mode PWM Controllers with
Programmable Switching Frequency
6 _______________________________________________________________________________________
SWITCHING FREQUENCY
vs. TIMING RESISTOR
MAX15000 toc13
TIMING RESISTOR (k Ω)
SWITCHING FREQUENCY (kHz)
100 10
100
1000 1
1000
10
MAX15000A
PROPAGATION DELAY FROM
CURRENT-LIMIT COMPARATOR
INPUT TO NDRV vs. TEMPERATURE
MAX15000 toc14
TEMPERATURE ( °C)
t PDCS
(ns)
60 35 10 -15
45
50
55
60
40
-40 85
UVLO/EN TO NDRV PROPAGATION DELAY
vs. TEMPERATURE
MAX15000 toc15
TEMPERATURE ( °C)
UVLO DELAY (ms)
60 35 10 -15
1
2
3
4
5
6
0
-40 85
UVLO/EN RISING
UVLO/EN FALLING 206 µs
UVLO/EN TO UFLG PROPAGATION DELAY
vs. TEMPERATURE
MAX15000 toc16
TEMPERATURE ( °C)
UVLO DELAY (
µ
s)
60 35 10 -15
1
2
3
4
5
6
0
-40 85
UVLO/EN RISING
UVLO/EN FALLING
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX15000 toc17
TEMPERATURE ( °C)
REFERENCE VOLTAGE (V)
60 35 10 -15
1.229
1.230
1.231
1.232
1.228
-40 85
V IN = 12V
INPUT CURRENT
vs. IN VOLTAGE
MAX15000 toc18
IN VOLTAGE (V)
INPUT CURRENT (mA)
18 17 16 15 14 13 12 11
1.64
1.68
1.72
1.76
1.80
1.60
10 19
UVLO/EN = 1.4V
NDRV SWITCHING AT 350kHz
INPUT CLAMP VOLTAGE
vs. TEMPERATURE
MAX15000 toc19
TEMPERATURE ( °C)
INPUT CLAMP VOLTAGE (V)
60 40 20 0 -20
25.2
25.4
25.6
25.8
26.0
26.2
26.4
26.6
26.8
27.0
25.0
-40 80
I IN = 2mA
NDRV LOW OUTPUT IMPEDANCE
vs. TEMPERATURE
MAX15000 toc20
TEMPERATURE ( °C)
R
ON
(Ω
)
60 35 10 -15
1.4
1.6
1.8
2.0
2.2
2.4
1.2
-40 85
V IN = 24V
SINKING 100mA
Typical Operating Characteristics (continued)
(V UVLO/EN = +1.4V, V
FB
= +1V, COMP = open, V
CS
= 0V, T
A
= +25°C, unless otherwise noted.)