參數(shù)資料
型號(hào)： MAX1971
廠商： Maxim Integrated Products, Inc.
元件分類： 數(shù)字信號(hào)處理
英文描述： Fixed-Point Digital Signal Processor 532-FCBGA
中文描述： 雙路、180°異相、1.4MHz、750mA、降壓型調(diào)節(jié)器，帶有POR和RSI/PFO
文件頁數(shù)： 4/20頁
文件大?。?/td> 371K
代理商： MAX1971
M
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
CC
= V
EN
= 5V, R
POR
= 100k
to IN, R
PFO
= 100k
to IN, V
RSI
= 0, C
REF
= 0.1μF, FBSEL1 = unconnected, FBSEL2 =
unconnected,
T
A
= 0
°
C to +85
°
C
, unless otherwise noted. Typical values are at T
A
= +25
°
C.)
PARAMETER
PFO
(MAX1970 and MAX1972 Only)
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
rising
V
CC
falling
4.04
3.94
4.12
PFO Trip Threshold
IN = V
CC
3.86
-1
V
PFO Output Current, High
PFO Output Voltage, Low
EN AND RSI
(MAX1971 Only)
PFO = IN
I
PFO
= 1mA, V
IN
= 4.3V
1
μA
V
0.01
0.05
V
IL
V
IH
0.4
0.95
1.0
10
Logic Input Thresholds
IN = 2.6V to 5.5V
1.6
20
1
1
V
RSI Input Resistance
Internal pullup resistor to IN
5
-1
-1
k
V
IL
V
IH
EN Logic Input Current
Logic input at 0 or
5.5V, V
IN
= 5.5V
μA
ELECTRICAL CHARACTERISTICS
(V
IN
= V
CC
= V
EN
= 5V, V
FB1
= V
FB2
= 1.15V, R
POR
= 100k
to IN, R
PFO
= 100k
to IN, RSI = 0, C
VCC
= 0.1μF, C
REF
= 0.1μF,
FBSEL1 = unconnected, FBSEL2 = unconnected,
T
A
= -40
°
C to +85
°
C.
) (Note 2)
PARAMETER
IN AND V
CC
IN Voltage Range
CONDITIONS
MIN
TYP
MAX
UNITS
2.6
5.5
10
20
20
100
2.55
V
MAX1971
MAX1970/MAX1972
MAX1970/MAX1972
MAX1971
IN Supply Current
Switching with no load
V
IN
= 3.3V
mA
IN Shutdown Current
V
IN
= 5.5V, V
EN
= 0
μA
V
CC
rising
V
CC
falling
V
CC
Undervoltage
Lockout Threshold
2.20
V
REF
REF Voltage
REF Shutdown Resistance
REF Soft-Start Current
FB1 AND FB2
I
REF
= 0, V
IN
= 2.6V to 5.5V
REF to GND, V
EN
=0
V
REF
= 1V
1.185
1.212
25
30
V
μA
20
FB_ Regulation Voltage
FBSEL_ = unconnected, OUT1 = FB1, OUT2 = FB2,
V
COMP_
= 1.20V to 1.80V, V
IN
= 2.6V to 5.5V
FBSEL_ = unconnected
V
IN
= 2.6V to 5.5V
V
IN
= 4.5V to 5.5V
1.185
1.212
V
OUT_ Voltage Range
1.2
1.778
3.259
1.481
2.469
750
V
IN
1.818
3.333
1.515
2.525
V
V
COMP1
= 1.2V, FBSEL1= GND
V
COMP1
= 1.2V, FBSEL1 = V
CC
V
COMP2
= 1.2V, FBSEL2 = GND
V
COMP2
= 1.2V, FBSEL2 = V
CC
OUT1 Regulation Voltage
V
OUT2 Regulation Voltage
V
IN
= 2.6V to 5.5V
V
Maximum Output Current
Guaranteed by design (Note 1)
mA
相關(guān)PDF資料
PDF描述
MAX1972 Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO
MAX1972EEE Fixed-Point Digital Signal Processor 532-FCBGA
MAX1973 Smallest 1A, 1.4MHz Step-Down Regulators
MAX1973EUB Smallest 1A, 1.4MHz Step-Down Regulators
MAX1974EUB Smallest 1A, 1.4MHz Step-Down Regulators
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