
MAX5098A
Dual, 2.2MHz, Automotive Buck or Boost
Converter with 80V Load-Dump Protection
_______________________________________________________________________________________
9
BYPASS VOLTAGE
vs. TEMPERATURE
MAX5098A toc22
TEMPERATURE (°C)
BYPASS VOLTAGE (V)
10065-5 30
1.994
1.996
1.998
2.000
2.002
2.006
2.004
2.008
2.010
1.990
1.992
-40 135
V
L
= V+ = V
IN_HIGH
= 5.5V
BYPASS VOLTAGE
vs. BYPASS CURRENT
MAX5098A toc23
BYPASS CURRENT (μA)
BYPASS VOLTAGE (V)
806020 40
1.992
1.994
1.998
1.996
2.000
1.990
0 100705010 30 90
T
A
= +25°C
T
A
= +135°C
T
A
= +125°C
T
A
= +85°C
T
A
= -40°C
SOURCE1, SOURCE1 INDICATOR CURRENT,
SOURCE2, SOURCE2 INDICATOR CURRENT
MAX5098A toc24
1μs/div
I
SOURCE1
500mA/div
NO LOAD
SOURCE1
20V/div
NO LOAD
SOURCE2
20V/div
I
SOURCE2
1A/div
0V
0A
0A
0V
Typical Operating Characteristics (continued)
(See the
Typical Application Circuit
, unless otherwise noted. V+ = V
IN_HIGH
= 14V, unless otherwise noted. V+ = V
IN_HIGH
means
that N1 is shorted externally.)
V+ SWITCHING SUPPLY CURRENT
vs. SWITCHING FREQUENCY
MAX5098A toc25
SWITCHING FREQUENCY (kHz)
V+ SWITCHING SUPPLY CURRENT (mA)
182014401060680
10
20
30
40
50
0
300 2200
T
A
= +25°C
T
A
= +135°C
T
A
= +125°C
T
A
= +85°C
T
A
= -40°C
V+ = IN_HIGH = ON/OFF
V+ STANDBY SUPPLY CURRENT
vs. TEMPERATURE
MAX5098A toc26
TEMPERATURE (°C)
V+ STANDBY SUPPLY CURRENT (mA)
100500
1
2
3
4
0
-50 150
f
SW
= 1.85MHz
f
SW
= 300kHz
V+ = IN_HIGH = ON/OFF
EN1 = EN2 = SGND
IN_HIGH SHUTDOWN CURRENT
vs. TEMPERATURE
MAX5098A toc27
TEMPERATURE (°C)
IN_HIGH SHUTDOWN CURRENT (μA)
100500
4
8
12
16
20
0
-50 150
IN_HIGH = 8V
IN_HIGH = 14V
IN_HIGH = 16V
ON/OFF = SGND
IN_HIGH STANDBY CURRENT
vs. TEMPERATURE
MAX5098A toc28
TEMPERATURE (°C)
IN_HIGH STANDBY CURRENT (μA)
100500
85
95
105
115
125
135
145
75
-50 150
IN_HIGH = 8V
IN_HIGH = 14V
IN_HIGH = 16V
ON/OFF = IN_HIGH
EN1 = EN2 = SGND
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