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| 型号： | MAX15020ATP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.5 V ~ 36 V |
| 输入电压： | 7.5 V ~ 40 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 300kHz ~ 500kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
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
Continuous Power Dissipation (T A = +70°C)
Thin QFN, single-layer board (5mm x 5mm)
(derate 21.3mW/°C above +70°C) ...........................1702.1mW
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
Soldering Temperature (reflow) .......................................+260°C
T J = +125°C..........................................................................4A
T J = +150°C.......................................................................2.7A
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.
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)
PARAMETER
Input Voltage Range
UVLO Rising Threshold
UVLO Falling Threshold
SYMBOL
V IN
UVLO RISING
UVLO FALLING
CONDITIONS
MIN
7.5
6.80
6.0
TYP
7.20
6.5
MAX
40.0
7.45
7.0
UNITS
V
V
V
UVLO Hysteresis
UVLO HYST
0.7
V
Quiescent Supply Current
Switching Supply Current
V IN = 40V, V FB = 1.3V
V IN = 40V, V FB = 0V
1.6
14.5
2.8
mA
mA
Shutdown Current
I SHDN
V ON/ OFF = 0.2V, V IN = 40V
6
15
μA
ON/ OFF CONTROL
Input-Voltage Threshold
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
V SD
V ON/ OFF = 0V to V IN
-250
+250
0.2
nA
V
INTERNAL VOLTAGE REGULATOR (REG)
Output Voltage
I REG = 0 to 20mA
7.1
8.3
V
OSCILLATOR
Frequency
Maximum Duty Cycle
f SW
D MAX
V FSEL = 0V
V FSEL = V REG
V FSEL = 0V
V FSEL = V REG
450
270
85
90
550
330
kHz
%
SYNC/FSEL High-Level Voltage
SYNC/FSEL Low-Level Voltage
2
0.8
V
V
SYNC Frequency Range
f SYNC
V FSEL = V REG
100
550
kHz
2
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