Datasheet

MAX17598/MAX17599
Low I
Q
, Wide-Input Range, Active Clamp
Current-Mode PWM Controllers
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.)
NDRV SWITCHING FREQUENCY
vs. TEMPERATURE
MAX17598/9 toc07
TEMPERATURE (°C)
NDRV SWITCHING FREQUENCY (kHz)
1008040 600
20
-20
150
250
450
350
550
650
750
850
950
50
-40 120
R
T
= 10kI
R
T
= 100kI
FREQUENCY DITHERING vs. R
DITHER
MAX17598/9 toc08
R
DITHER
(kI)
FREQUENCY DITHERING (%)
900800700600500400300
4
6
8
10
12
14
2
200 1000
DEAD TIME vs. R
DT
MAX17598/9 toc09
R
DT
(kI)
DEAD TIME - DT (ns)
9080706050403020
60
100
140
180
220
20
10 100
MAX17598/9 toc10
TEMPERATURE (°C)
DEAD TIME (ns)
DEAD TIME vs. TEMPERATURE
244
246
248
250
252
242
120100806040200-20-40
R
DT
= 100kI
PEAK-CURRENT-LIMIT THRESHOLD
vs. TEMPERATURE
MAX17598/9 toc11
TEMPERATURE (°C)
PEAK-CURRENT-LIMIT THRESHOLD (mV)
100 120806040200-20
301
302
303
304
305
306
307
300
-40
REVERSE CURRENT LIMIT THRESHOLD
vs. TEMPERATURE
MAX17598/9 toc12
TEMPERATURE (°C)
REVERSE CURRENT LIMIT THRESHOLD (mV)
12010060 800 20 40-20
-103
-102
-101
-100
-99
-98
-97
-96
-95
-104
-40
V
IN
FALLING THRESHOLD vs.
TEMPERATURE (MAX17599)
MAX17598/9 toc04
TEMPERATURE (°C)
V
IN
FALLING THRESHOLD (V)
100806040200-20
3.88
3.89
3.90
3.91
3.92
3.87
-40 120
IN SUPPLY CURRENT UNDER UVLO
vs. TEMPERATURE
MAX17598/9 toc05
TEMPERATURE (°C)
IN SUPPLY CURRENT UNDER UVLO (µA)
100806040200-20
20.5
21.5
22.5
23.5
24.5
25.5
19.5
-40 120
NDRV SWITCHING FREQUENCY
vs. RESISTOR
MAX17598/9 toc06
FREQUENCY SELECTION RESISTOR (kI)
NDRV SWITCHING FREQUENCY (kHz)
958565 7525 35 45 5515
100
200
300
400
500
600
700
800
900
1000
0
5