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| 型号： | MAX1673ESA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHD CAP INV ADJ 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -1.5 V ~ -5.5 V |
| 输入电压： | 2 V ~ 5.5 V |
| 频率 - 开关： | 350kHz |
| 电流 - 输出： | 125mA |
| 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： | 管件 |
| 供应商设备封装： | 8-SOIC |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
Regulated, 125mA-Output,
Charge-Pump DC-DC Inverter
______________________________________________________________Pin Description
PIN
1
2
3
4
5
6
7
8
NAME
LIN/ SKIP
CAP+
CAP-
SHDN
OUT
FB
GND
IN
FUNCTION
Regulation-Mode Select Input. Driving LIN/ SKIP high or connecting it to IN selects LIN mode, with regula-
tion accomplished by modulating switch resistance. Driving LIN/ SKIP low or connecting it to GND selects
Skip mode, where the device regulates by skipping charge-pump pulses.
Positive Terminal of Flying Capacitor
Negative Terminal of Flying Capacitor
Shutdown Control Input. Drive SHDN low to shut down the MAX1673. Connect SHDN to IN for normal
operation. OUT connects to GND through a 1 ? (typical) resistor in shutdown mode.
Inverting Charge-Pump Output
Feedback Input. Connect FB to a resistor-divider from IN (or other reference source) to OUT for regulated
output voltages (Figures 1 and 4).
Ground
Power-Supply Positive Voltage Input
Detailed Description
The MAX1673 new-generation, high-output-current,
regulated charge-pump DC-DC inverter provides up to
125mA. Designed specifically for compact applica-
tions, a complete regulating circuit requires only three
small capacitors and two resistors. The MAX1673
employs On-Demand? regulation circuitry, providing
output regulation modes optimized for either lowest out-
put noise or lowest supply current. In addition, the
In Linear (LIN) mode or when heavily loaded in Skip
mode, the charge pump runs continuously at 350kHz.
During one-half of the oscillator period, switches S1 and
S2 close (Figure 2), charging the transfer capacitor
(C FLY ) to the input voltage (CAP- = GND, and CAP+ =
IN). During the other half cycle, switches S3 and S4
close (Figure 3), transferring the charge on C FLY to the
output capacitor (CAP+ = GND, CAP- = OUT).
MAX1673 includes shutdown control.
S1
CAP+
S3
IN
S2
C FLY
S4
C OUT
OUT
CAP-
350kHz
INPUT
5.0V
C IN
10 μ F
8
R1
100k
Figure 2. Charging C FLY
ON
OFF
4
SHDN
IN
FB
6
LIN
C FLY
2.2 μ F
SKIP
2
3
1
CAP+ MAX1673
CAP-
LIN/SKIP
OUT
GND
5
C OUT
22 μ F
R1
60.4k
OUTPUT
-3V
IN
S1
S2
C FLY
CAP+
CAP-
S3
S4
C OUT
OUT
7
350kHz
Figure 1. Standard Application Circuit
Figure 3. Transferring Charge on C FLY to C OUT
6
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1673ESA+ | 功能描述:电荷泵 Regulated 125mA Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX1673ESA+T | 功能描述:电荷泵 Regulated 125mA Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX1673ESA-T | 功能描述:电荷泵 Regulated 125mA Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX1674EUA | 功能描述:直流/直流开关转换器 Compact 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 |
| MAX1674EUA+ | 功能描述:直流/直流开关转换器 Compact 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 |
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