Datasheet

MAX17595/MAX17596/MAX17597
Peak-Current-Mode Controllers for
Flyback and Boost Regulators
7Maxim Integrated
Typical Operating Characteristics (continued)
(V
IN
= 15V, V
EN/UVLO
= +2V, COMP = open, C
VIN
= 1FF, C
VDRV
= 1FF, T
A
= T
J
= -40NC to +125NC, unless otherwise noted.)
OVI FALLING THRESHOLD
vs. TEMPERATURE
MAX17595/6/7 toc08
TEMPERATURE (°C)
OVI FALLING THRESHOLD (V)
20 40 60 80 100 1200-20
1.1480
1.1485
1.1490
1.1495
1.1500
1.1505
1.1475
-40
NDRV SWITCHING FREQUENCY
vs. RESISTOR
MAX17595/6/7 toc11
FREQUENCY SELECTION RESISTOR (kI)
NDRV SWITCHING FREQUENCY (kHz)
1000
0
5152535455565758595
100
200
300
400
600
700
800
900
500
FREQUENCY DITHERING vs. R
DITHER
R
DITHER
(kI)
FREQUENCY DITHERING (%)
900800700600500400300
4
6
8
10
12
14
2
200 1000
MAX17595/6/7 toc13
NDRV SWITCHING FREQUENCY
vs. TEMPERATURE
MAX17595/6/7 toc12
TEMPERATURE (°C)
NDRV SWITCHING FREQUENCY (kHz)
20 40 60 80 100 1200-20
950
850
750
650
550
450
350
250
150
50
-40
R
RT
= 10kI
R
RT
= 100kI
SWITCHING WAVEFORMS (MAX17595)
MAX17595/6/7 toc14
I
PRI
1A/div
4µs/div
V
DRAIN
100V/div
V
IN
SUPPLY CURRENT UNDER UVLO
vs. TEMPERATURE
MAX17595/6/7 toc09
TEMPERATURE (°C)
V
IN
SUPPLY CURRENT UNDER UVLO (µA)
20 40 60 80 100 1200-20
20.5
21.5
22.5
23.5
24.5
25.5
19.5
-40
SWITCHING CURRENT
vs. TEMPERATURE
MAX17595/6/7 toc10
TEMPERATURE (°C)
SWITCHING CURRENT (mA)
20 40 60 80 100 1200-20
2.5
1.5
-40
1.6
1.7
1.8
1.9
2.1
2.2
2.3
2.4
2.0