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参数资料
型号： MAX1970-MAX1972
厂商： Maxim Integrated Products, Inc.
英文描述： Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO
中文描述： 双路，180Σ外的阶段，1.4MHz的，750毫安降压型POR和RSI的稳压器/警队条例
文件页数： 2/20页
文件大小： 371K
代理商： MAX1970-MAX1972
M
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN, EN, FBSEL1, FBSEL2, PFO,
POR
,
RSI, V
CC
to GND ...................................................-0.3V to +6V
COMP1, COMP2, FB1, FB2,
REF to GND.............................................-0.3V to (V
CC
+ 0.3V)
LX1, LX2 to PGND .......................................-0.3V to (V
IN
+ 0.3V)
PGND to GND .......................................................-0.3V to +0.3V
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)
16-pin QSOP (derate 8.3mW/
°
C above +70
°
C)...........667mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
ELECTRICAL CHARACTERISTICS
(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
IN AND V
CC
IN Voltage Range
CONDITIONS
MIN
TYP
MAX
UNITS
2.6
5.5
10
20
100
60
2.55
V
MAX1971
MAX1970/MAX1972
MAX1970/MAX1972
MAX1971
5
10
1
1
2.40
2.35
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
1.188
1.200
10
25
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
1.188
1.200
1.212
V
OUT_ Voltage Range
1.2
1.782
3.2670
1.485
2.475
750
30
30
22.5
22.5
V
IN
1.818
3.330
1.150
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
1.800
3.3
1.5
2.5
OUT1 Regulation Voltage
V
OUT2 Regulation Voltage
V
IN
= 2.6V to 5.5V
V
Maximum Output Current
Guaranteed by design (Note 1)
mA
FBSEL1 = GND
FBSEL1 = V
CC
FBSEL2 = GND
FBSEL2 = V
CC
60
60
45
45
0.01
120
120
90
90
0.1
FB1 Input Resistance
Measured from FB1 to
GND
k
FB2 Input Resistance
Measured from FB2 to
GND
k
FB_ Input Bias Current
FB1 or FB2, FBSEL_ = unconnected, V
FB1
= V
FB2
= 1.15V
μA
相关PDF资料
PDF描述
MAX1970 Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO
MAX1970EEE Fixed-Point Digital Signal Processor 532-FCBGA
MAX1971 Fixed-Point Digital Signal Processor 532-FCBGA
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
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