參數(shù)資料
型號： MAX1791
廠商： Maxim Integrated Products, Inc.
英文描述： High-Efficiency, 10-Pin レMAX, Step-Down Controllers for Notebooks
中文描述： 高效率、10引腳µMAX、降壓型控制器，用于筆記本電腦
文件頁數(shù)： 2/20頁
文件大?。?/td> 391K
代理商： MAX1791
M
High-Efficiency, 10-Pin μMAX, Step-Down
Controllers for Notebooks
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
VP,
SHDN
to GND..................................................-0.3V to +22V
VP to VL..................................................................-0.3V to +22V
OUT, VL to GND.......................................................-0.3V to +6V
DL, FB, REF to GND ....................................-0.3V to (VL + 0.3V)
DH to GND....................................................-0.3V to (VP + 0.3V)
CS to GND....................................................-2.0V to (VP + 0.3V)
REF Short Circuit to GND...........................................Continuous
Continuous Power Dissipation (T
A
= +70
°
C)
10-Pin μMAX (derate 5.6mW/
°
C above +70
°
C)...........444mW
Operating Temperature.......................................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature.........................................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
ELECTRICAL CHARACTERISTICS
(V
VP
= 15V, VL enabled, C
VL
= 1μF, C
REF
= 0.1μF,
T
A
= 0 to +85
°
C,
unless otherwise noted. Typical values are at T
A
= +25
°
C.)
(Note 1)
PARAMETER
SYMBOL
V
VP
V
VL
CONDITIONS
MIN
5
4.75
TYP
MAX
20
5.25
UNITS
V
V
VP Input Voltage Range
VL Input Voltage Range
VL (overdriven)
OUT Output Voltage
(MAX1762, 1.8V Fixed)
V
OUT
V
VP
= 5V to 20V, V
VL
= 4.75V to 5.25V,
FB = GND, continuous conduction mode
1.773
1.8
1.827
V
OUT Output Voltage
(MAX1762, 2.5V Fixed)
V
OUT
V
VP
= 5V to 20V, V
VL
= 4.75V to 5.25V,
FB = VL, continuous conduction mode
2.463
2.5
2.538
V
OUT Output Voltage
(MAX1791, 3.3V Fixed)
V
OUT
V
VP
= 5V to 20V, V
VL
= 4.75V to 5.25V,
FB = GND, continuous conduction mode
3.250
3.3
3.350
V
OUT Output Voltage
(MAX1791, 5V Fixed)
V
OUT
V
VP
= 7V to 20V, V
VL
= 4.75V to 5.25V,
FB = VL, continuous conduction mode
4.925
5
5.075
V
OUT Output Voltage (Adj Mode)
V
VP
= 5V to 20V, V
VL
= 4.75V to 5.25V,
FB = OUT, continuous conduction mode
1.231
1.250
1.269
V
Output Voltage Adjust Range
OUT Input Resistance
FB Input Bias Current
Soft-Start Ramp Time
0.5
300
-0.1
5.5
1700
0.1
V
Adjustable-output mode
V
FB
= 1.3V
Zero to full I
LIM
V
OUT
= 1.25V, V
VP
= 6V
V
OUT
= 5V, V
VP
= 6V
800
k
μ
A
μ
s
1700
740
2830
400
666
2550
300
814
3110
500
On-Time (Note 2)
t
ON
ns
Minimum Off-Time (Note 2)
t
OFF
ns
VL Quiescent Supply Current
FB = GND, V
VL
= 5V, OUT forced above the
regulation point
153
260
μ
A
V
VL
= float
227
410
VP Quiescent Supply Current
FB = GND, OUT forced
above the regulation point,
V
VP
= 20V
V
VL
= 5V,
SHDN
= GND
S HD N
= GN D m easur ed at V P V
V L
= 0 or 5V
I
LOAD
= 0 to 25mA, V
VP
= 5V to 20V
V
VL
= 5V
93
200
μ
A
VL Shutdown Supply Current
VP Shutdown Supply Current
VL Output Voltage
2
4
15
12
4.75
μ
A
μ
A
V
4.5
4.65
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.
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