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): 2/18頁
文件大小: 594K
代理商: MAX1856EUB
M
Wide Input Range, Synchronizable,
PWM SLIC Power Supply
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
CC
, SYNC/
SHDN
to GND .....................................-0.3V to +30V
PGND to GND .......................................................-0.3V to +0.3V
LDO, FREQ, FB, CS to GND.....................................-0.3V to +6V
EXT, REF to GND......................................-0.3V to (V
LDO
+ 0.3V)
LDO Output Current............................................-1mA to +20mA
LDO Short Circuit to GND...............................................<100ms
REF Short Circuit to GND...........................................Continuous
ELECTRICAL CHARACTERISTICS
(V
CC
= SYNC/
SHDN,
V
CC
= 5V, V
LDO
= 5V, R
OSC
= 200k
,
T
A
= 0
°
C to +85
°
C
. Typical values are at T
A
= +25
°
C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Continuous Power Dissipation (T
A
= +70
°
C)
10-Pin μMAX (derate 5.6mW/
°
C above +70
°
C)...........444mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
3
28
5.5
50
V
V
nA
Operating Input Voltage Range
V
CC
V
CC
= V
LDO
V
FB
= -0.05V
V
CS
= 0 to 100mV for 0 to I
LOAD(MAX)
Typically 0.0074% per % duty factor on EXT
2.7
FB Input Current
Load Regulation
Line Regulation
Current-Limit Threshold
CS Input Current
I
FB
1
0.013
0.0074
100
%/mV
%/%
mV
μA
V
CS
I
CS
85
115
1
CS = GND
Idle Mode Current-Sense
Threshold
5
15
25
mV
V
CC
Supply Current (Note 1)
Shutdown Supply Current
REFERENCE AND LDO REGULATOR
I
CC
V
FB
= -0.05V, V
CC
= 3V to 28V
SYNC/
SHDN
= GND, V
CC
= 28V
250
3.5
400
6
μA
μA
5V
V
CC
28V
3V
V
CC
28V
4.50
2.65
5.00
5.50
5.50
LDO Output Voltage
V
LDO
R
LDO
= 400
V
Undervoltage Lockout
Threshold
V
UVLO
V
LDO
falling edge, 1% hysteresis (typ)
2.40
2.50
2.60
V
REF to FB Voltage (Note 2)
REF Load Regulation
V
REF
R
REF
= 10k
, C
REF
= 0.22μF
I
REF
= 0 to 400μA
1.225
1.250
-2
1.275
-10
V
mV
REF Undervoltage Lockout
Threshold
Rising edge, 1% hysteresis (typ)
1.0
1.1
1.2
V
OSCILLATOR
R
OSC
= 100k
±
1%
R
OSC
= 200k
±
1%
R
OSC
= 500k
±
1%
R
OSC
= 100k
±
1%
R
OSC
= 200k
±
1%
R
OSC
= 500k
±
1%
425
225
85
86
87
86
500
250
100
90
90
90
575
275
115
94
93
94
Oscillator Frequency
f
OSC
kHz
Maximum Duty Cycle
D
%
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