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| 型号： | MAX1790EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.8A 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： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.6 V ~ 12 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 640kHz, 1.22MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 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-Noise Step-Up DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
LX to GND ..............................................................-0.3V to +14V
IN, SHDN , FREQ, FB to GND ................................-0.3V to +6.2V
SS, COMP to GND .......................................-0.3V to (V IN + 0.3V)
RMS LX Pin Current ..............................................................1.2A
Continuous Power Dissipation (T A = +70°C)
Operating Temperature Range
MAX1790EUA/MAX8715EUA ........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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 IN = SHDN = 3V, FREQ = GND, T A = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
Input Supply Range
V IN Undervoltage Lockout
SYMBOL
V IN
UVLO
CONDITIONS
V IN rising, typical hysteresis is 40mV,
LX remains off below this level
MIN
2.6
2.25
TYP
2.38
MAX
5.5
2.52
UNITS
V
V
Quiescent Current
Shutdown Supply Current
I IN
I IN
MAX1790
MAX8715
SHDN = GND
V FB = 1.3V, not switching
V FB = 1.0V, switching
V FB = 1.3V, not switching
V FB = 1.0V, switching
0.18
2
0.21
2.5
0.1
0.35
5
0.35
5.0
10
mA
μA
ERROR AMPLIFIER
Feedback Voltage
V FB
Level to produce V COMP = 1.24V
1.222
1.24
1.258
V
FB Input Bias Current
I FB
V FB = 1.24V
MAX1790
MAX8715
0
125
40
190
nA
Feedback-Voltage Line
Regulation
Level to produce V COMP = 1.24V,
2.6V < V IN < 5.5V
0.05
0.15
%/V
Transconductance
g m
Δ I = 5μA
MAX1790
MAX8715
70
70
140
160
240
240
μS
Voltage Gain
A V
700
V/V
OSCILLATOR
Frequency
Maximum Duty Cycle
f OSC
DC
FREQ = GND
FREQ = IN
FREQ = GND
FREQ = IN
540
1000
79
640
1220
85
84
740
1500
92
kHz
%
N-CHANNEL SWITCH
Current Limit
I LIM
V FB = 1V,
duty cycle =
65% (Note 1)
MAX1790
MAX8715
1.2
1.8
1.6
2.4
2.3
3.4
A
On-Resistance
R ON
MAX1790
MAX8715
0.21
0.15
0.5
0.35
Ω
Leakage Current
I LXOFF
V LX = 12V
MAX1790
MAX8715
0.01
5
20
30
μA
2
_______________________________________________________________________________________
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