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参数资料
| 型号： | MAX1889ETE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/32页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUP TRPL LCD 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，TFT LCD |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 3 |
| 输出电压： | 2.7 V ~ 13 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
Triple-Output TFT LCD Power Supply
with Fault Protection
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
SHDN
PGND
GND
REF
FB
FBN
DRVN
DRVP
FBP
FREQ
LX
TGND
OCN
OCP
GATE
IN
FUNCTION
Active-Low Shutdown Control Input. Pull SHDN below the 0.4V logic-low level to turn off all sections
of the device and pull the GATE pin high. Pull SHDN above the 1.6V logic-high level to enable the
device. Do not leave SHDN floating.
Power Ground. PGND is the source of the N-channel power MOSFET. Connect PGND to the analog
ground (GND) at the device ’ s pins.
Analog Ground. Connect GND to the power ground (PGND) at the device ’ s pins.
Internal Reference Bypass Terminal. Connect a 0.22μF ceramic capacitor from REF to the analog
ground (GND). External load capability is at least 50μA.
Main Step-Up Regulator Feedback Input. FB regulates to 1.25V nominal. Connect FB to the center of
a resistive voltage-divider between the main output (V MAIN ) and the analog ground (GND) to set the
main step-up regulator output voltage. Place the resistive voltage-divider close to the pin.
Negative Linear-Regulator Feedback Input. FBN regulates to 125mV nominal. Connect FBN to the
center of a resistive voltage-divider between the negative output (V NEG ) and the REF to set the
negative linear-regulator output voltage. Place the resistive voltage-divider close to the pin.
Negative Linear-Regulator Base Drive. Open drain of an internal P-channel MOSFET. Connect DRVN
to the base of the external linear-regulator NPN pass transistor (see Pass Transistor Selection
section).
Positive Linear-Regulator Base Drive. Open drain of an internal N-channel MOSFET. Connect DRVP
to the base of the external linear-regulator PNP pass transistor (see Pass Transistor Selection
section).
Positive Linear-Regulator Feedback Input. FBP regulates to 1.25V nominal. Connect FBP to the
center of a resistive voltage-divider between the positive output (V POS ) and the analog ground (GND)
to set the positive linear-regulator output voltage. Place the resistive voltage-divider close to the pin.
Frequency Select Input. Pull FREQ above logic-high level (0.7 × V IN ) to set the frequency to 1MHz
and pull FREQ below logic-low level (0.3 × V IN ) to set the frequency to 500kHz. Do not leave FREQ
floating.
Switching Node. Drain of the internal N-channel power MOSFET for the main step-up regulator.
Internal connection. Connect this pin to ground.
Overcurrent Comparator Inverting Input. OCN connects to the center tap of a resistive voltage-
divider connected to the drain of the input protection P-channel MOSFET (see the Input Overcurrent
Protection section). If unused, connect OCN to REF.
Overcurrent Comparator Noninverting Input. OCP is connected to the center tap of a resistive
voltage-divider that sets the input overcurrent threshold (see the Input Overcurrent Protection
section). If unused, connect OCP to GND.
Gate Driver Output to the External P-Channel MOSFET (see the Input Overcurrent Protection section).
If unused, leave GATE open.
Supply Input. The supply voltage powers all the control circuitry. The input voltage range is from 2.7V
to 5.5V. Bypass with a 0.1μF ceramic capacitor between IN and GND, as close to the pins as
possible.
10
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| MAX1889EVKIT | 功能描述:电源管理IC开发工具 MAX1889 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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| MAX188ACAP+T | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 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 |
| MAX188ACAP-T | 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 |
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