- 您现在的位置：买卖IC网 > PDF目录1844 > MAX629ESA-T (Maxim Integrated Products)IC REG MULTI CONFIG +/-28V 8SOIC PDF资料下载
参数资料
| 型号： | MAX629ESA-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG +/-28V 8SOIC |
| 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），反相，回扫，Sepic |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | ±28V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 300kHz |
| 电流 - 输出： | 500mA |
| 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-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
28V, Low-Power, High-Voltage,
Boost or Inverting DC-DC Converter
POL
REF
1.25V
REF
MIN OFF-TIME
GENERATOR
POLARITY TRIG
Q
START-UP
MAX629
ERROR
AMP
S
F/F
Q
LX
FB
START-UP
COMPARATOR
MAX ON-TIME
TRIG
R
ISET
SHDN
CONTROL
V CC
GND
Figure 1. Functional Diagram
1V
GENERATOR
(10 μ s)
Q
without a significant loss of accuracy. Begin by select-
ing R2 to be in the 10k ? to 200k ? range, and calculate
R1 using the applicable equation from the following
the FB threshold voltage to GND so that negative volt-
ages can be regulated. Choose R2 and calculate R1 as
follows:
subsections.
Positive Output Voltages
For positive output voltages, use the typical boost con-
R1 = R2 x
| V OUT |
V REF
R1 = R2 x ? OUT ? 1 ?
figuration shown in Figure 2, connecting POL to GND.
This sets the threshold voltage at FB to equal V REF .
Choose the value of R2 and calculate R1 as follows:
? V ?
? V REF ?
where V REF = 1.25V.
Negative Output Voltages
For negative output voltages, configure R1 and R2 as
shown in Figure 3, connecting POL to V CC . This sets
where V REF = 1.25V.
Figure 3 demonstrates generation of a negative output
voltage by following the MAX629 with an inverting
charge pump. This configuration limits ? V OUT ? to values
between - ? V IN ? and -28V. If smaller negative output volt-
ages are required, D2’s cathode can be connected to
V IN . This alternative configuration permits output volt-
ages smaller than - ? V IN ?, but cannot be used for output
voltages more negative than - ? 28V - V IN ?. It produces
roughly one-half the output current as the standard con-
figuration and is typically 5% less efficient.
6
_______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6304ESA | IC CIRCUIT SUPERVISORY LP 8-SOIC |
| MAX6306UK31D3-T | IC PROGRAM 3.080V RESET SOT23-5 |
| MAX6314US41D3+T | IC RESET CIRCUIT 4.10V SOT143-4 |
| MAX6315US29D2-T | IC RESET CIRCUIT 2.93V SOT143-4 |
| MAX631ACSA | IC REG BOOST 5V/ADJ 50MA 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX629ESA-TG068 | 制造商:Maxim Integrated Products 功能描述:28V, LOW-POWER, HIGH-VOLTAGE BOOST OR INVERTI - Tape and Reel |
| MAX629EVKIT | 功能描述:直流/直流开关转换器 Evaluation Kit for the MAX629 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 |
| MAX63___R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual/Triple-Voltage ??P Supervisory Circuits |
| MAX63___S | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual/Triple-Voltage ??P Supervisory Circuits |
| MAX63___T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual/Triple-Voltage ??P Supervisory Circuits |
发布紧急采购，3分钟左右您将得到回复。