MAX796 Maxim, MAX796 Datasheet - Page 8

• Manufacturer Part Number: MAX796
• Description: Step-Down Controllers with Synchronous Rectifier for CPU Power
• Manufacturer: Maxim

Step-Down Controllers with
Synchronous Rectifier for CPU Power
8
(T
____________________________Typical Operating Characteristics (continued)
A
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
PULSE-WIDTH-MODULATION MODE WAVEFORMS
I
CIRCUIT OF FIGURE 1
1050
LOAD
900
750
600
450
300
150
0
= 1A, V
0
MAXIMUM SECONDARY CURRENT vs.
SUPPLY VOLTAGE, 3.3V/5V CIRCUIT
IN
3
= 16V,
6
SUPPLY VOLTAGE (V)
500ns/div
9
MAX796
CIRCUIT OF FIGURE 12
TRANSFORMER = TDK 1.5:1
V
SEC
I
OUT
12
I
(MAIN) = 2A
OUT
4.8V
15
(MAIN) = 0A
18
21
V
IN
= 15V, CIRCUIT OF FIGURE 1
24
+5V LOAD-TRANSIENT RESPONSE
+5V OUTPUT
VOLTAGE
50mV/div
LX VOLTAGE
10V/div
200 s/div
I
CIRCUIT OF FIGURE 1
LOAD
800
600
500
400
300
200
100
700
0
3A
0A
+5V OUTPUT
50mV/div
= 100mA, V
LOAD CURRENT
0
vs. SUPPLY VOLTAGE, ±5V CIRCUIT
MAXIMUM SECONDARY CURRENT
IDLE-MODE WAVEFORMS
4
IN
= 10V,
8
SUPPLY VOLTAGE (V)
200 s/div
12
MAX799
CIRCUIT OF FIGURE 13
TRANSFORMER = TTI5926
V
SEC
16
I
OUT
I
OUT
-5.1V
(MAIN) = 1A
20
(MAIN) = 0A
24
28
32
+5V OUTPUT
50mV/div
2V/div