MAX1856EUB+T Maxim Integrated Products, MAX1856EUB+T Datasheet - Page 4

• Manufacturer Part Number: MAX1856EUB+T
• Description: IC PWR SPLY PWM SLIC 10-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX1856EUB+T

• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Wide Input Range, Synchronizable,
PWM SLIC Power Supply
ELECTRICAL CHARACTERISTICS (continued)
(V
4
Note 1: This is the V
Note 2: The reference output voltage (V REF ) is measured with respect to FB. The difference between REF and FB is guaranteed to
Note 3: Specifications to -40°C are guaranteed by design, not production tested.
(Circuit of Figure 1, V
Maximum Duty Cycle
Minimum SYNC Input Signal
Duty Cycle
Minimum SYNC Input
Low Pulse Width
SYNC Input Frequency Range
SYNC/SHDN Input High Voltage
SYNC/SHDN Input Low Voltage
SYNC/SHDN Input Current
EXT On-Resistance
CC
-22.0
-22.5
-23.0
-23.5
-24.0
-24.5
_______________________________________________________________________________________
= SYNC/SHDN, V
0
be within these limits to ensure output voltage accuracy.
PARAMETER
100
V
IN
= 5V
-24V OUTPUT VOLTAGE
200
vs. LOAD CURRENT
V
CC
IN
300
I
CC
OUT1
CC
= 12V
current consumed when active, but not switching, so the gate-drive current is not included.
= V
(mA)
= 5V, V
400
SYNC/SHDN
V
IN
500
V
V
I
= 24V
OUT1
OUT2
OUT2
LDO
600
= -24V
= -72V
= 5mA
= 5V, R
SYMBOL
R
ON(EXT)
f
SYNC
V
V
= 12V, V
700
D
IH
IL
OSC
-72.0
-72.5
-73.0
-73.5
-74.0
-74.5
= 200kΩ, T
OUT1
R
R
R
V
V
EXT high or low
SYNC/SHDN
SYNC/SHDN
OSC
OSC
OSC
0
V
V
I
= -24V, V
-72V CROSS-REGULATION VOLTAGE
OUT2
V
OUT1
OUT2
IN
= 100kΩ ±1%
= 200kΩ ±1%
= 500kΩ ±1%
100
= 5V
= 5mA
= -24V
= -72V
A
200
vs. LOAD CURRENT
= -40°C to +85°C, unless otherwise noted.) (Note 3)
= 5V
= 28V
OUT2
CONDITIONS
300
I
OUT1
= -72V, R
(mA)
400
V
Typical Operating Characteristics
IN
= 12V
500
OSC
V
IN
600
= 24V
= 200kΩ, unless otherwise noted.)
700
100
90
80
70
60
50
0
MIN
100
2.0
V
86
87
86
IN
EFFICIENCY vs. LOAD CURRENT
100
= 5V
200
TYP
(-24V OUTPUT)
300
I
OUT1
V
IN
(mA)
400
V
= 12V
IN
MAX
0.45
200
500
= 24V
3.0
94
93
94
45
10
5
500
V
V
I
OUT1
OUT2
OUT2
600
= -24V
= -72V
= 5mA
UNITS
kHz
µA
ns
%
%
Ω
V
V
700