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参数资料
| 型号： | MAX849ESE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC DC-DC CONV LN HP 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 转换器，RF 数据链路 |
| 输入电压： | 0.7 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 3.3V，2.7 V ~ 5.5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
1-Cell to 3-Cell, High-Power,
Low-Noise, Step-Up DC-DC Converters
ELECTRICAL CHARACTERISTICS
(V OUT = 3.6V, GND = PGND = CLK/SEL = ON1 = ON2 = AINSEL = AIN1 = AIN2 = FB = POKIN, POUT = OUT, T A = -40°C to +85°C ,
unless otherwise noted.) (Note 9)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE
Reference Output Voltage
I REF = 0mA
1.225
1.275
V
DC-DC CONVERTER
Output Voltage (Note 3)
FB Regulation Voltage
Output Voltage Lockout Range
OUT Supply Current in Shutdown
OUT Supply Current in Low-Power
Mode (Note 6)
OUT Supply Current in Low-Noise
Mode (Note 6)
V FB < 0.1V, CLK/SEL = OUT,
includes load-regulation error
Adjustable output, CLK/SEL = OUT
(Note 3)
V ON2 = 3.6V
CLK/SEL = GND
CLK/SEL = OUT, does not include
switching losses
3.13
1.21
2.05
3.47
1.27
2.45
20
90
300
V
V
V
μA
μA
μA
DC-DC SWITCHES
Switch On-Resistance
N-channel
P-channel
CLK/SEL = GND
CLK/SEL = OUT
CLK/SEL = OUT
0.6
0.25
0.5
?
N-Channel Current Limit
CLK/SEL = OUT
CLK/SEL = GND (Note 7)
MAX848
MAX849
MAX848
MAX849
600
1100
120
250
1100
1800
300
550
mA
ADC
Accuracy
f CLK = 400kHz, 5ms conversion
±4
% FSR
POWER-GOOD
Internal Trip Level
External Trip Level
Rising V OUT , V POKIN < 0.1V
Rising V POKIN
2.95
1.225
3.10
1.275
V
V
LOGIC CONTROL INPUTS
Internal Oscillator Frequency
Oscillator Maximum Duty Cycle
CLK/SEL = OUT
260
80
340
90
kHz
%
Note 1: Minimum operating voltage. Because the MAX848/MAX849 are bootstrapped to the output, it will operate down to a 0.7V input.
Note 2: In low-power mode (CLK/SEL = GND), the output voltage regulates 1% higher than in low-noise mode (CLK/SEL = OUT or
synchronized).
Note 3: The part is in start-up mode until it reaches this voltage level. Do not apply full-load current.
Note 4: Load regulation is measured from no load to full load, where full load is determined by the N-channel switch current limit.
Note 5: Start-up is tested with Figure 2’s circuit. Output current is measured when the input and output voltages are applied.
Note 6: Supply current from the 3.34V output is measured between the 3.34V output and the OUT pin. This current correlates directly
with actual battery supply current, but is reduced in value according to the step-up ratio and efficiency. V OUT = 3.6V to keep
the internal switch open when measuring the current into the device.
Note 7: When V CLK/SEL = 0V, the inductor is forced into constant-peak-current, discontinuous operation. This is guaranteed by
testing in Figure 2’s circuit.
Note 8: ON1 and ON2 inputs have approximately 0.15V OUT hysteresis.
Note 9: Specifications to -40°C are guaranteed by design, not production tested.
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX849ESE+ | 功能描述:直流/直流开关转换器 1-3 Cell Step-Up DC/DC Converter 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 |
| MAX849ESE+T | 功能描述:直流/直流开关转换器 1-3 Cell Step-Up DC/DC Converter 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 |
| MAX849ESE-T | 功能描述:直流/直流开关转换器 1-3 Cell Step-Up DC/DC Converter 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 |
| MAX849EVKIT | 功能描述:直流/直流开关转换器 1-Cell to 3-Cell High-Power Low-Noise Step-Up DC-DC Converter 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 |
| MAX849EVKIT-SO | 功能描述:直流/直流开关转换器 Evaluation Kit for the MAX848 MAX849 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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