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| 型号： | MAX17067EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.3A 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： | 1.25 V ~ 18 V |
| 输入电压： | 2.6 V ~ 4 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 640kHz，1.2MHz |
| 电流 - 输出： | 300mA |
| 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 Converter
ELECTRICAL CHARACTERISTICS (continued)
(V IN = SHDN = 3V, FREQ = 3V, T A = -40°C to +85°C , unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
n-CHANNEL SWITCH
Current Limit
On-Resistance
Current-Sense Transresistance
I LIM
R ON
R CS
V FB = 1V, duty cycle = 68% (Note 4)
V IN = 3V
1.8
0.19
3.4
275
0.40
A
V/A
SOFT-START
Reset Switch Resistance
100
Charge Current
V SS = 1.2V
2.5
6.5
μA
CONTROL INPUTS
Input Low Voltage
Input High Voltage
V IL
V IH
SHDN , FREQ, V IN = 2.6V to 4.0 V
SHDN , FREQ, V IN = 2.6V to 4.0V
0.7 x
V IN
0.3 x
V IN
V
V
Note 1: Limit on IN absolute maximum ratings is for operation without the use of an external resistor for the internal clamp circuit.
See the IN Supply Clamp Circuit section for IN voltage limits during clamping circuit operation.
Note 2: Limits are 100% production tested at T A = +25°C. Maximum and minimum limits over temperature are guaranteed by design
and characterization.
Note 3: See the IN Supply Clamp Circuit section to properly size the external resistor.
Note 4: Current limit varies with duty-cycle slope compensation. See the Output-Current Capability section.
Typical Operating Characteristics
(Circuit of Figure 1, V IN = 3.3V, f OSC = 640kHz, T A = +25°C, unless otherwise noted.)
100
EFFICIENCY vs. L0AD CURRENT
(V IN = 3.3V, V OUT = 9V)
1.0
STEP-UP CONVERTER
LOAD REGULATION
1400
1300
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
90
80
70
60
f OSC = 640kHz
L = 4.7 μ H
f OSC = 1.2MHz
L = 3.3 μ H
0.5
0
L = 3.3 μ H
1200
1100
1000
900
800
700
FREQ = IN
FREQ = GND
600
50
-0.5
500
1
10
100
1000
1
10
100
1000
2.5
3.0
3.5
4.0
4.5
5.0
5.5
LOAD CURRENT (mA)
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
4
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