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参数资料
| 型号： | MAX756ESA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters |
| 中文描述： | 1 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | PLASTIC, SOP-8 |
| 文件页数： | 2/8页 |
| 文件大小： | 111K |
| 代理商： | MAX756ESA |
MAX756/MAX757
3.3V/5V/Adjustable-Output,
Step-Up DC-DC Converters
2
_______________________________________________________________________________________
Supply Voltage (OUT to GND) ....................................-0.3V, +7V
Switch Voltage (LX to GND) ........................................-0.3V, +7V
Auxiliary Pin Voltages (SHDN, LBI, LBO, REF,
3/5, FB to GND) ........................................-0.3V, (VOUT + 0.3V)
Reference Current (IREF) ....................................................2.5mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C) ..........................471mW
Operating Temperature Ranges:
MAX75_C_ _ ........................................................0°C to +70°C
MAX75_E_ _......................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range............................... -65°to +160°C
Lead Temperature (soldering, 10sec) ........................... +300°C
ELECTRICAL CHARACTERISTICS
(Circuits of Figure 1 and Typical Operating Circuit, VIN = 2.5V, ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise noted.)
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.
ABSOLUTE MAXIMUM RATINGS
Note 1: Supply current from the 3.3V output is measured with an ammeter between the 3.3V output and OUT pin. This current
correlates directly with actual battery supply current, but is reduced in value according to the step-up ratio and efficiency.
Note 2: Minimum value is production tested. Maximum value is guaranteed by design and is not production tested.
LBO Output Leakage Current
SHDN, 3/5, FB, LBI Input Current
V
2.7
5.5
MAX757, ILOAD = 0mA (Note 2)
Output Voltage Range
V
1.22
1.25
1.28
MAX757
FB Voltage
nA
±100
LBI = 1.25V, FB = 1.25V, SHDN = 0V or 3V,
3/5 = 0V or 3V
V
1.6
SHDN, 3/5 Input Voltage High
V
0.4
SHDN, 3/5 Input Voltage Low
Shutdown Quiescent Current
(Note 1)
Battery Quiescent Current
Measured at VIN in Figure 1
V
1.22
1.25
1.28
With falling edge
LBI Input Threshold
mV
25
LBI Input Hysteresis
V
0.4
ISINK = 2mA
LBO Output Voltage Low
A
1
LBO = 5V
A
20
40
SHDN = 0V, LBI = 1.25V, 3/5 = 3V, VOUT = 3.47V,
FB = 1.3V (MAX757 only)
A
Quiescent Supply Current in
3.3V Mode (Note 1)
MAX757, VOUT = 5V, 0mA < ILOAD < 200mA
MAX756, 3/5 = 0V, 0mA < ILOAD < 200mA
MAX756, 3/5 = 3V, 0mA < ILOAD < 300mA
%
0.8
2.0
3/5 = 3V, -20A < REF load < 250A, CREF = 0.22F
Reference-Voltage Regulation
V
1.23
1.25
1.27
No REF load, CREF = 0.1F
60
ILOAD = 0mA, 3/5 = 3V, LBI = 1.25V, VOUT = 3.47V,
FB = 1.3V (MAX757 only)
A
V
60
Output set for 3.3V
1.1
1.8
ILOAD = 10mA
Minimum Start-Up Supply Voltage
4.8
5.0
5.2
2V < VIN < 3V
Reference Voltage
3.17
3.30
3.43
V
4.8
5.0
5.2
Output Voltage
UNITS
MIN
TYP
MAX
CONDITIONS
PARAMETER
V
0.7
ILOAD = 20mA
Minimum Operating Supply
Voltage (once started)
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| MAX756EVKIT-SO | 功能描述:直流/直流开关转换器 MAX756 Eval Kit RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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