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参数资料
| 型号： | MAX1709EVKIT |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | MAX1709 Evaluation Kit |
| 中文描述： | MAX1709评估板 |
| 文件页数： | 7/12页 |
| 文件大小： | 502K |
| 代理商： | MAX1709EVKIT |
M
4A, Low-Noise, High-Frequenc y,
S tep-Up DC-DC Converter
_______________________________________________________________________________________
7
SHUTDOWN WITH SOFT-START
(C
SS
= 0.01
μ
F)
MAX1709-17
5V
0
1ms/div
V
2V/div
V
5V/div
4A
0
4V
I
2A/div
6A
2V
C
SS
= 0.01
μ
F
R
OUT
= 5
V
ONB
= V
OUT
2A
SHUTDOWN WITHOUT SOFT-START
5V
0
1ms/div
V
2V/div
V
5V/div
4A
0
4V
I
2A/div
6A
2V
C
SS
= 0
R
OUT
= 5
V
ONB
= V
OUT
2A
Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
Pin Desc ription
PIN
1
NAME
ONA
FUNCTION
On-Control Input. When ONA = high
or
ONB
= low, the device turns on (Table 1).
2, 3, 4
LX
Drain of N-Channel Power Switch. Connect pins 2, 3, and 4 together. Connect external
Schottky diode from LX to OUT.
5, 8
GND
Ground
6
SS/LIM
Soft-Start and/or Current-Limit Input. Connect a capacitor from SS/LIM to GND to control the
rate at which the device reaches current limit (soft-start). To reduce the current limit from the
preset values, connect a resistor from SS/LIM to GND (see
Design Procedure
). During
shutdown, this pin is internally pulled to GND to discharge the soft-start capacitor.
7
REF
1.26V Voltage Reference Output. Bypass with a 0.22
μ
F capacitor to GND. Maximum REF load
is 50
μ
A.
9
OUT
Output Voltage Sense Input. The device is powered from OUT. Bypass with a 0.1
μ
F to PGND
with less than 5mm trace length. Connect a 2
series resistor from the output filter capacitor to
OUT (Figure 1).
10
FB
DC-DC Converter Feedback Input. Connect FB to GND for internally set output voltage (see
3.3
/
5 pin description). Connect a resistor-divider from the output to set the output voltage in
the +2.5V to +5.5V range. FB regulates to +1.25V (Figure 4).
11, 12, 13
PGND
Power Ground, Source of N-Channel Power MOSFET Switch
14
3.3/5
Output Voltage Selection Pin. When FB is connected to GND, the regulator uses internal
feedback to set the output voltage. 3.3
/
5 = low sets output to 3.3V; 3.3
/
5 = high sets output to
5V. If an external divider is used at FB, connect 3.3
/
5 to ground.
15
CLK
Clock Input for the DC-DC Converter. Connect to OUT for internal oscillator. Optionally, drive
with an external clock for external synchronization.
16
ONB
Shutdown Input. When
ONB
= high
and
ONA = low, the device turns off (Table 1).
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相关代理商/技术参数 |
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| MAX170ACPA | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX170ACPA+ | 功能描述:模数转换器 - ADC 12-Bit 115ksps 5.25V- Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX170ACWE | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX170ACWE+ | 功能描述:模数转换器 - ADC Serial Output 5.6 Micro Seconds 12-Bit ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX170ACWE+T | 功能描述:模数转换器 - ADC Serial Output 5.6 Micro Seconds 12-Bit ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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