MAX1856EUB+ Maxim Integrated Products, MAX1856EUB+ Datasheet - Page 5

• Manufacturer Part Number: MAX1856EUB+
• Description: IC PS PWM SLIC SYNCH 10-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX1856EUB+

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 575kHz
• Duty Cycle: 94%
• Voltage - Supply: 3 V ~ 28 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: Yes
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 575kHz
• Output Voltage: 0 V to - 185 V
• Output Current: 0.3 A
• Input Voltage: 3 V to 28 V
• Switching Frequency: 500 KHz
• Mounting Style: SMD/SMT
• Duty Cycle (max): 94 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(Circuit of Figure 1, V
-23.0
-23.2
-23.4
-23.6
-23.8
-24.0
-46.5
-46.9
-47.3
-47.7
-48.1
-48.5
-70
-71
-72
-73
-74
0
0
0
V
V
IN
IN
= 5V
V
I
V
I
= 5V
OUT1
OUT2
50
OUT1
OUT2
5
-24V OUTPUT VOLTAGE
-72V OUTPUT VOLTAGE
-48V OUTPUT VOLTAGE
100
vs. INPUT VOLTAGE
vs. LOAD CURRENT
vs. LOAD CURRENT
= 50mA
= 50mA
= -24V
= -72V
100
10
I
_______________________________________________________________________________________
I
CC
OUT2
OUT2
V
IN
200
V
V
(V)
= V
IN
(mA)
(mA)
IN
V
V
= 12V
150
= 12V
15
IN
IN
V
I
V
I
OUT1
OUT2
SYNC/SHDN
OUT1
OUT2
= 24V
= 24V
V
V
= 100mA
= 100mA
I
V
FIGURE 4
300
OUT1
OUT2
= -24V
= -72V
OUT1
OUT
200
20
= -24V
= -72V
= -48V
= 5mA
Wide Input Range, Synchronizable,
= 12V, V
250
400
25
-23.0
-23.2
-23.4
-23.6
-23.8
-24.0
-71.0
-71.4
-71.8
-72.2
-72.6
-73.0
OUT1
Typical Operating Characteristics (continued)
100
90
80
70
60
50
0
0
0
= -24V, V
-24V CROSS-REGULATION VOLTAGE
V
V
IN
EFFICIENCY vs. LOAD CURRENT
IN
V
I
V
I
= 5V
OUT1
OUT2
OUT1
OUT2
= 5V
50
5
-72V OUTPUT VOLTAGE
100
vs. INPUT VOLTAGE
vs. LOAD CURRENT
= 50mA
= 50mA
= -24V
= -72V
V
OUT2
IN
(-48V OUTPUT)
100
= 24V
10
PWM SLIC Power Supply
I
OUT2
I
OUT2
V
IN
200
= -72V, R
V
(mA)
(V)
(mA)
IN
V
IN
150
= 12V
15
V
I
V
I
OUT1
OUT2
= 12V
OUT1
OUT2
V
V
V
I
= 100mA
= 100mA
OUT1
OUT2
IN
OUT1
= -24V
= -72V
V
FIGURE 4
300
OUT
= 24V
200
20
OSC
= -24V
= -72V
= 5mA
= -48V
= 200kΩ, unless otherwise noted.)
250
400
25
100
100
250
200
150
100
90
80
70
60
50
90
80
70
60
50
50
0
0
0
0
V
EFFICIENCY vs. LOAD CURRENT
IN
= 5V
DUAL-OUTPUT EFFICIENCY
5
50
5
vs. INPUT VOLTAGE
vs. INPUT VOLTAGE
V
I
V
I
OUT1
OUT2
SUPPLY CURRENT
OUT1
OUT2
INPUT VOLTAGE (V)
(-72V OUTPUT)
10
100
10
= 50mA
= 50mA
= -24V
= -72V
I
OUT2
V
IN
15
CURRENT INTO V
V
(V)
(mA)
IN
150
15
= 12V
V
IN
20
V
I
V
I
OUT1
OUT2
R
OUT1
OUT2
= 24V
V
V
OSC
I
OUT1
OUT2
OUT1
200
20
= 100mA
= 100mA
= -24V
= -72V
= 500kΩ
25
= -24V
= -72V
CC
= 5mA
PIN
250
25
30
5