- 您现在的位置：买卖IC网 > PDF目录383332 > MAX1700EEE (MAXIM INTEGRATED PRODUCTS INC) 1-Cell to 3-Cell, High-Power 1A, Low-Noise, Step-Up DC-DC Converters PDF资料下载
参数资料
| 型号： | MAX1700EEE |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1-Cell to 3-Cell, High-Power 1A, Low-Noise, Step-Up DC-DC Converters |
| 中文描述： | 1.8 A SWITCHING REGULATOR, 340 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | 0.150 INCH, 0.025 INCH PITCH, QSOP-16 |
| 文件页数： | 12/16页 |
| 文件大小： | 248K |
| 代理商： | MAX1700EEE |
M
between the positive battery terminal and GND (Figure
5). The resistor values are then calculated as follows:
R3 = R4(V
TH
/V
LBN
-1)
where V
TH
is the desired input voltage trip threshold
and V
LBN
= V
REF
= 1.25V. Since the input bias current
into LBP is less than 20nA, R4 can be a large value
(such as 270k
or less) without sacrificing accuracy.
The inputs have a common-mode input range from
0.5V to 1.5V and an input-referred hysteresis of 15mV.
The low-battery comparator can also be used to moni-
tor the output voltage, as shown in Figure 6.
To set the low-battery threshold to a voltage below the
1.25V reference, insert a resistor divider between REF
and LBN and connect the battery to the LBP input
through a 10k
current-limiting resistor (Figure 7). The
equation for setting the resistors for the low-battery
threshold is then as follows:
R5 = R6(V
REF
/V
LBP
-1)
where V
LBP
is the desired voltage threshold. In Figures
5, 6, and 7, LBO goes low for a low-voltage input. The
low-battery comparator can be used to check the out-
put voltage or to control the load directly on P
OUT
dur-
ing start-up (Figure 8). Use the following equation to set
the resistor values:
R3 = R4(V
OUTTH
/V
LBP
- 1)
where V
OUTTH
is the desired output-voltage trip point
and V
LBP
is connected to the reference or 1.25V.
1-Cell to 3-Cell, High-Power (1A),
Low-Noise, S tep-Up DC-DC Converters
12
______________________________________________________________________________________
FB
PGND
GND
AO
AIN
ARBITRARY VOLTAGE MONITOR
ARBITRARY
VOLTAGE
LOW-BATTERY MONITOR
VOLTAGE MONITOR
LBO
POK
OUT
POUT
LX
D1
L1
LBP
LBN
REF
CLK/SEL
ONA
ONB
R4
R6
R5
R3
10
0.22
μ
F
0.7V TO5.5V
MAX1701
Figure 5. Detecting Battery Voltage Above 1.25V
MAX1701
LBN
LBO
LBP
POUT
REF
GND
R5
R6
BATTERY
VOLTAGE
10k
0.22
μ
F
MAX1701
LBO
REF
LBN
POUT
GND
R3
R4
0.22
μ
F
OUT
LBP
Figure 6. Using the Low-Battery Comparator to Sense the
Output Voltage (MAX1701)
Figure 7. Detecting Battery Voltages Below 1.25V (MAX1701)
270k
MAX1701
LBP
LBO
LBN
0.22
μ
F
OUT
POUT
10
REF
GND
R3
R4
P
C3
0.22
μ
F
C4
C5
OUTPUT
Figure 8. Using the Low-Battery Comparator for Load Control
During Start-Up
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1701EEE | 18-Bit Universal Bus Transceivers With 3-State Outputs 56-SSOP -40 to 85 |
| MAX1702B | Triple-Output Power-Management IC for Microprocessor-Based Systems |
| MAX1702BEGX | Triple-Output Power-Management IC for Microprocessor-Based Systems |
| MAX1703 | 1-Cell to 3-Cell, High-Power 1.5A, Low-Noise, Step-Up DC-DC Converter |
| MAX1703ESE | 1-Cell to 3-Cell, High-Power 1.5A, Low-Noise, Step-Up DC-DC Converter |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1700EEE+ | 功能描述:直流/直流开关转换器 1-3 Cell 1A Step-Up DC/DC Converters 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 |
| MAX1700EEE+T | 功能描述:直流/直流开关转换器 1-3 Cell 1A Step-Up DC/DC Converters 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 |
| MAX1700EEE-T | 功能描述:直流/直流开关转换器 1-3 Cell 1A Step-Up DC/DC Converters 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 |
| MAX17010AETL+ | 功能描述:LCD 驱动器 Internal-Switch Boost Regulator RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX17010AETL+T | 功能描述:LCD 驱动器 Internal-Switch Boost Regulator RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。