參數(shù)資料
型號: MAX1856EUB
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Replaced by TMS320C6202B : Fixed-Point Digital Signal Processor 352-FCBGA 0 to 0
中文描述: SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, PDSO10
封裝: MICRO MAX PACKAGE-10
文件頁數(shù): 4/18頁
文件大?。?/td> 594K
代理商: MAX1856EUB
M
Wide Input Range, Synchronizable,
PWM SLIC Power Supply
4
_______________________________________________________________________________________
PARAMETER
SYMBOL
CONDITIONS
MIN
86
87
86
TYP
MAX
94
93
94
UNITS
R
OSC
= 100k
±
1%
R
OSC
= 200k
±
1%
R
OSC
= 500k
±
1%
Maximum Duty Cycle
D
%
Minimum SYNC Input Signal
Duty Cycle
45
%
Minimum SYNC Input
Low Pulse Width
200
ns
SYNC Input Frequency Range
SYNC/
SHDN
Input High Voltage
SYNC/
SHDN
Input Low Voltage
f
SYNC
V
IH
V
IL
100
2.0
500
kHz
V
V
0.45
3.0
10
5
V
SYNC/
SHDN
= 5V
V
SYNC/
SHDN
= 28V
EXT high or low
SYNC/
SHDN
Input Current
μA
EXT On-Resistance
R
ON(EXT)
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= SYNC/
SHDN,
V
CC
= 5V, V
LDO
= 5V, R
OSC
= 200k
,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted.) (Note 3)
Note 1:
This is the V
CC
current consumed when active, but not switching, so the gate-drive current is not included.
Note 2:
The reference output voltage (VREF) is measured with respect to FB. The difference between REF and FB is guaranteed to
be within these limits to ensure output voltage accuracy.
Note 3:
Specifications to -40
°
C are guaranteed by design, not production tested.
Typical Operating Characteristics
(Circuit of Figure 1, V
CC
= V
SYNC/
SHDN
= 12V, V
OUT1
= -24V, V
OUT2
= -72V, R
OSC
= 200k
, unless otherwise noted.)
-24.5
-24.0
-23.0
-23.5
-22.5
-22.0
0
200
100
300
I
OUT1
(mA)
400
500
600
700
-24V OUTPUT VOLTAGE
vs. LOAD CURRENT
M
V
O
V
IN
= 5V
V
IN
= 12V
V
IN
= 24V
V
OUT1
= -24V
V
OUT2
= -72V
I
OUT2
= 5mA
-74.5
-74.0
-73.0
-73.5
-72.5
-72.0
0
200
100
300
I
OUT1
(mA)
400
500
600
700
-72V CROSS-REGULATION VOLTAGE
vs. LOAD CURRENT
M
V
O
V
IN
= 5V
V
IN
= 24V
V
OUT1
= -24V
V
OUT2
= -72V
I
OUT2
= 5mA
V
IN
= 12V
50
60
70
90
80
100
0
100
200
300
I
OUT1
(mA)
400
500
600
700
EFFICIENCY vs. LOAD CURRENT
(-24V OUTPUT)
M
E
V
OUT1
= -24V
V
OUT2
= -72V
I
OUT2
= 5mA
V
IN
= 5V
V
IN
= 24V
V
IN
= 12V
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