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参数资料
| 型号： | MAX686EEE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST INV +/-27.5V 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 升压（升压），反相 |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | ±27.5V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 300kHz |
| 电流 - 输出： | 100mA |
| 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： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-QSOP |
| 其它名称： | Q1752000 |
DAC-Controlled Boost/Inverter
LCD Bias Supply with Internal Switch
_____________________________Typical Operating Characteristics (continued)
(Circuits of Figures 1 and 2, V CC = V DD = V IN = +5V, L1 = 22μH, SHDN = V CC , C REF = 0.1μF, TA = +25°C, unless otherwise noted.)
SHDN
5V/div
V OUT
5V/div
POWER-UP RESPONSE
(NEGATIVE CONFIGURATION)
MAX686 TOC14A
I SET = V CC
R L = 4.7k ?
500 μ s
0V
-16.8V
SHDN
5V/div
V OUT
5V/div
POWER-DOWN RESPONSE
(NEGATIVE CONFIGURATION)
MAX686 TOC14B
I SET = V CC
R L = 4.7k ?
0V
-16.8V
20ms/div
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
PGND
UP
DN
POL
V DD
ISET
SHDN
DACOUT
REF
FB
POK
V CC
GND
LCDON
N.C.
LX
FUNCTION
Power Ground. Connect to GND.
Increment Output Voltage Input. Increments the DAC on each rising edge such that | V OUT | increases.
Decrement Output Voltage Input. Decrements the DAC on each rising edge such that | V OUT | decreases.
Polarity Input. Changes polarity and threshold of FB to allow regulation of either positive or negative output
voltages. POL also changes the polarity of the DAC output such that increasing codes always increases the
magnitude of the output voltage. Set POL = GND for positive output voltage, or set POL = V CC for negative
output voltage.
Gate-Drive Supply for Internal MOSFET. Connect to V CC .
Set LX Current Limit. Sets the peak current limit for the internal switch. Connect to V CC for 500mA current
limit. Connect to GND for 250mA current limit.
Shutdown Input. A logic low on SHDN places the MAX686 in shutdown mode. Connect to V CC for normal
operation.
DAC Output Voltage
Reference Output. Bypass with a 0.1μF ceramic capacitor to GND.
Feedback Input. Connect to an external voltage divider to set the MAX686 output voltage. See the section
Setting the Output Voltage with the DAC.
Power-OK Sense Input/Power-OK Comparator Input. When the voltage applied to POK is greater than
1.125V, LCDON is low. Connect to a resistive voltage divider monitoring V IN or V OUT .
IC Power-Supply Input
Ground
Power-OK Comparator Open-Drain Output. Connect to external switch to turn LCD power on or off. See the
section Controlling the LCD Using POK and LCDON .
No Connection. Not internally connected.
Drain of Internal 28V, 500mA N-Channel Switch
_______________________________________________________________________________________
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX686EEE+ | 功能描述:直流/直流开关转换器 Boost Inverter LCD Bias Supply 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 |
| MAX686EEE+T | 功能描述:直流/直流开关转换器 Boost Inverter LCD Bias Supply 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 |
| MAX686EEE-T | 功能描述:直流/直流开关转换器 Boost Inverter LCD Bias Supply 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 |
| MAX686EVKIT | 功能描述:直流/直流开关转换器 Evaluation Kit for the MAX686 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 |
| MAX6870ETJ | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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