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参数资料
| 型号： | MAX1797EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC FIX/ADJ 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，5V，可调 |
| 输入电压： | 1 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 550mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-uMAX |
Low Supply Current, Step-Up DC-DC Converters
with True-Shutdown
ABSOLUTE MAXIMUM RATINGS
OUT, LX, SHDN, LBI, LBO, BATT to GND................-0.3V to +6V
FB .............................................................-0.3V to (V OUT + 0.3V)
I LX , I OUT ..............................................................................±1.5A
Output Short-Circuit Duration ...................................................5s
Operating Temperature Range ...........................-40 ° C to +85 ° C
Junction Temperature ......................................................+150 ° C
Storage Temperature Range .............................-65 ° C to +150 ° C
Lead Temperature (soldering, 10s) .................................+300 ° C
Continuous Power Dissipation
8-Pin μMAX (derate 4.1mW/ ° C above +70 ° C) .............330mW
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 BATT = +2V, OUT = FB (V OUT = +3.3V), SHDN = LBI = GND, T A = 0°C to +85°C , unless otherwise noted. Typical values are at
T A = +25 ° C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Input Voltage
After startup
0.7
V
Operating Voltage
Startup Voltage
V BATT
(Note 1)
T A = +25 ° C, R L = 3k ?
1.0
0.85
5.5
1.0
V
V
Startup Voltage Tempco
-2.2
mV/ ° C
Output Voltage
V OUT
FB = OUT
FB = GND
3.17
4.80
3.3
5.0
3.43
5.20
V
Adjustable Output Voltage
Range
2.0
5.5
V
BATT = +2V,
FB = OUT
MAX1795
MAX1796
100
200
180
300
Steady-State Output Current
I OUT
(V OUT = +3.3V)
BATT = +2V,
MAX1797
MAX1795
400
50
550
120
mA
FB = GND
(V OUT = +5.0V)
MAX1796
MAX1797
100
250
200
370
Feedback Set-Point Voltage
(Adjustable Mode)
Feedback Input Current
Internal NFET, PFET On-
Resistance
V FB
I FB
R DS(ON)
V OUT = +2V to +5.5V
V FB = +1.24V
V OUT = +3.3V,
I LX = 100mA
NFET
PFET
1.20
1.24
4
0.17
0.27
1.28
100
0.3
0.45
V
nA
?
MAX1795
0.2
0.25
0.35
LX Switch Current Limit (NFET
only)
I LIM
MAX1796
0.4
0.5
0.625
A
MAX1797
0.8
1.0
1.25
LX Leakage Current
Synchronous Rectifier Turn-Off
Current Limit
I LEAK
V LX = 0 and +5.5V, V OUT = +5.5V
0.2
25
μ A
mA
Damping Switch On-Resistance
Operating Current into OUT
(Note 2)
R DAMP
V FB = +1.4V
100
200
25
400
45
?
μ A
2
_______________________________________________________________________________________
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