Rainbow Electronics MAX5099 - Manual (Page 9)

MAX5099
Dual, 2.2MHz, Automotive Synchronous Buck
Converter with 80V Load-Dump Protection
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BYPASS VOLTAGE
vs. BYPASS CURRENT
MAX5099 toc22
BYPASS CURRENT ( μA)
BYPASS VOLTAGE (V)
80 60 20 40
1.992
1.994
1.998
1.996
2.000
1.990
0 100 70 50 10 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)
1820 1440 1060 680
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)
100 50 0
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 (
μ
A)
100 50 0
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 (
μ
A)
100 50 0
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.)