Owner manual

MAX5099
Dual, 2.2MHz, Automotive Synchronous Buck
Converter with 80V Load-Dump Protection
_______________________________________________________________________________________ 9
BYPASS VOLTAGE
vs. BYPASS CURRENT
MAX5099 toc22
BYPASS CURRENT (
μ
A)
BYPASS VOLTAGE (V)
806020 40
1.992
1.994
1.998
1.996
2.000
1.990
0100705010 30 90
T
A
= +25
°
C
T
A
= +135
°
C
T
A
= +125
°
C
T
A
= +85
°
C
T
A
= -40
°
C
SOURCE1, I
SOURCE1
, DL1, I
IDL1
MAX5099 toc23
200ns/div
I
SOURCE1
1A/div
SOURCE1
10V/div
DL1
10V/div
OV
0V
0A
V+ SWITCHING SUPPLY CURRENT
vs. SWITCHING FREQUENCY
MAX5099 toc24
SWITCHING FREQUENCY (kHz)
V+ SWITCHING SUPPLY CURRENT (mA)
182014401060680
20
40
60
80
100
0
300 2200
T
A
= +25
°
C
T
A
= +135
°
C
T
A
= -40
°
C
V+ = IN_HIGH = ON/OFF
V+ STANDBY SUPPLY CURRENT
vs. TEMPERATURE
MAX5099 toc25
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
MAX5099 toc26
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
MAX5099 toc27
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
Typical Operating Characteristics (continued)
(V+ = V
IN_HIGH
= 14V, unless otherwise noted. V+ = V
IN_HIGH
means that N1 is shorted externally.)