Typical operating characteristics (continued) – Rainbow Electronics MAX1813 User Manual
Page 9
MAX1813
Dynamically-Adjustable, Synchronous Step-Down
Controller with Integrated Voltage Positioning
_______________________________________________________________________________________
9
220
260
240
300
280
320
340
-40
10
-15
35
60
85
SWITCHING FREQUENCY
vs. TEMPERATURE
MAX1813 toc09
TEMPERATURE (
°C)
SWITCHING FREQUENCY (kHz)
I
OUT
= 20A
I
OUT
= 10A
I
OUT
= 5A
I
OUT
= 1A
260
280
300
320
340
360
380
400
420
-40
-15
10
35
60
85
ON TIME
vs. TEMPERATURE
MAX1813 toc10
TEMPERATURE (
°C)
ON TIME (ns)
I
OUT
= 1A
I
OUT
= 5A
I
OUT
= 20A
I
OUT
= 10A
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-40
-15
10
35
60
85
CURRENT-LIMIT DEVIATION
vs. TEMPERATURE
MAX1813 toc11
TEMPERATURE (
°C)
V
VPCS
DEVIATION (mV)
V
ILIM
= 0.5V
V
ILIM
= 2V
0
0.4
0.2
0.8
0.6
1.0
1.2
0
8
12
4
16
20
24
NO-LOAD SUPPLY CURRENT
vs. BATTERY INPUT VOLTAGE (SKIP MODE)
MAX1813 toc12
BATTERY INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
I
CC
+ I
DD
V
OUT
= 1.4V
SKP/SDN = V
CC
CODE = ZMODE = GND
I
BATT
0
5
10
15
20
25
30
35
40
0
8
4
12
16
20
24
NO-LOAD SUPPLY CURRENT
vs. BATTERY INPUT VOLTAGE (PWM MODE)
MAX1813 toc13
BATTERY INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
I
CC
+ I
DD
I
BATT
V
OUT
= 1.4V
SKP/SDN = FLOAT
CODE = ZMODE = GND
1000
10
10
100
1000
TRANSITION FREQUENCY vs. R
TIME
MAX1813 toc14
R
TIME
(k
Ω)
f
SLEW
(kHz) 100
T
A
= -40
°C, 25°C, 85°C
Typical Operating Characteristics (continued)
(Circuit from Figure 1, components from Table 2, T
A
= +25
°C, unless otherwise noted.)