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参数资料
| 型号： | MAX1524EUT-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST FLYBK SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 90% |
| 电源电压： | 1.5 V ~ 5.5 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | SOT-6 |
| 包装： | 带卷 (TR) |
Simple SOT23 Boost Controllers
ABSOLUTE MAXIMUM RATINGS
V CC , FB, SHDN , SET to GND ...................................-0.3V to +6V
EXT to GND ................................................-0.3V to (V CC + 0.3V)
Continuous Power Dissipation (T A = +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..........696mW
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
Operating Temperature Range ..........................-40°C to +85°C
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 CC = SHDN = 3.3V, SET = GND , T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V CC Operating Voltage Range
V CC Minimum Startup Voltage
MAX1522/MAX1523
f EXT > 100kHz, MAX1524 (Note 1), bootstrap required
2.5
5.5
2.5
1.5
V
V
Undervoltage Lockout
Threshold
V CC Supply Current
V CC Shutdown Current
V CC rising
V CC falling
No load, nonbootstrapped
SHDN = GND
2.20
2.37
2.30
25
0.001
2.47
50
1
V
μA
μA
Fixed t ON Time
V FB =1.2V
SET = GND
SET = V CC
0.4
2.4
0.5
3.0
0.6
3.6
μs
Minimum t OFF Time
V FB > 0.675V
V FB < 0.525V
0.5
1.0
μs
Maximum Duty Factor
FB Regulation Threshold
(Note 2)
FB Undervoltage Fault
Threshold (Note 2)
FB Input Bias Current
EXT Resistance
Soft-Start Ramp Time
SET = GND
SET = V CC
V CC = +2.5V to +5.5V
FB falling
V FB = 1.3V
I EXT = 20mA
EXT high
EXT low
45
80
1.23
525
2.2
50
85
1.25
575
6
2
1.5
3.2
55
90
1.27
625
50
4
3
4.2
%
V
mV
nA
?
ms
Logic Input High
Logic Input Low
V CC = +2.5V to +5.5V, SET, SHDN
V CC = +2.5V to +5.5V, SET, SHDN
1.6
0.4
V
V
Logic Input Leakage Current
SET, SHDN = V CC or GND
-1
+1
μA
Note 1: Actual startup voltage is dependent on the external MOSFET’s V GS(TH) .
Note 2: Specification applies after soft-start mode is completed.
2
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