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參數(shù)資料
| 型號： | MAX15020 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 2A, 40V Step-Down DC-DC Converter with Dynamic Output-Voltage Programming |
| 中文描述： | 2A、40V降壓型DC-DC轉(zhuǎn)換器，可動態(tài)設(shè)置輸出電壓 |
| 文件頁數(shù)： | 2/19頁 |
| 文件大?。?/td> | 363K |
| 代理商： | MAX15020 |
M
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN, ON/
OFF
to GND........…....................................-0.3V to +45V
LX to GND................................................-0.715V to (V
IN
+ 0.3V)
BST to GND ..................................................-0.3V to (V
IN
+ 12V)
BST to LX................................................................-0.3V to +12V
PGND, EP to GND.................................................-0.3V to +0.3V
REG, DVREG, SYNC to GND .................................-0.3V to +12V
FB, COMP, FSEL, REFIN, REFOUT,
SS to GND .............................................-0.3V to (V
REG
+ 0.3V)
Continuous Current through Internal Power MOSFET
T
J
= +125°C..........................................................................4A
T
J
= +150°C.......................................................................2.7A
ELECTRICAL CHARACTERISTICS
(V
IN
= 36V, V
REG
= V
DVREG
, V
PGND
= V
GND
= V
EP
= 0V, V
SYNC
= 0V, C
REFOUT
= 0.1μF, T
A
= T
J
= -40°C to +125°C, FSEL = REG,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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)
20-Pin Thin QFN, single-layer board (5mm x 5mm)
(derate 21.3mW/°C above +70°C)...........................1702.1mW
20-Pin Thin QFN, multilayer board (5mm x 5mm)
(derate 34.5mW/°C above +70°C)...........................2758.6mW
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................-60°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER
SYMBOL
V
IN
UVLO
RISING
UVLO
FALLING
UVLO
HYST
CONDITIONS
MIN
7.5
6.80
6.0
TYP
MAX
40.0
7.45
7.0
UNITS
V
V
V
V
mA
mA
μA
Input Voltage Range
UVLO Rising Threshold
UVLO Falling Threshold
UVLO Hysteresis
Quiescent Supply Current
Switching Supply Current
Shutdown Current
ON/
OFF
CONTROL
Input-Voltage Threshold
7.20
6.5
0.7
1.6
14.5
6
V
IN
= 40V, V
FB
= 1.3V
V
IN
= 40V, V
FB
= 0V
V
ON/
OFF
= 0.2V, V
IN
= 40V
2.8
I
SHDN
15
V
ON/
OFF
V
ON/
OFF
rising
1.200
1.225
1.270
V
Input-Voltage Threshold
Hysteresis
120
mV
Input Bias Current
Shutdown Threshold Voltage
INTERNAL VOLTAGE REGULATOR (REG)
Output Voltage
OSCILLATOR
V
ON/
OFF
= 0V to V
IN
-250
+250
0.2
nA
V
V
SD
I
REG
= 0 to 20mA
7.1
8.3
V
V
FSEL
= 0V
V
FSEL
= V
REG
V
FSEL
= 0V
V
FSEL
= V
REG
450
270
85
90
2
550
330
Frequency
f
SW
kHz
Maximum Duty Cycle
D
MAX
%
SYNC/FSEL High-Level Voltage
SYNC/FSEL Low-Level Voltage
SYNC Frequency Range
V
V
0.8
550
f
SYNC
V
FSEL
= V
REG
100
kHz
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