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参数资料
| 型号： | MAX17014ETM+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 23/33页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY MULT-OUTPUT 48TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 43 |
| 应用： | LCD 电视机/监控器 |
| 电流 - 电源： | 8mA |
| 电源电压： | 8 V ~ 16.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-TQFN-EP（7x7） |
| 包装： | 托盘 |
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Low-Cost Multiple-Output
Power Supply for LCD TVs
Select the first mode by connecting MODE to VL. When
CTL is logic-high, Q1 turns on and Q2 turns off, con-
necting GON to SRC. When CTL is logic-low, Q1 turns
off and Q2 turns on, connecting GON to DRN. GON
can then be discharged through a resistor connected
between DRN and GND or AV DD . Q2 turns off and
stops discharging GON when V GON reaches 10 times
the voltage on THR.
When V MODE is less than 0.8 x V VL , the switch control
block works in the second mode. The rising edge of
V CTL turns on Q1 and turns off Q2, connecting GON to
SRC. An internal n-channel MOSFET, Q3, between
MODE and GND is also turned on to discharge an
external capacitor between MODE and GND. The
falling edge of V CTL turns off Q3, and an internal 50μA
current source starts charging the MODE capacitor.
Once V MODE exceeds V VL/4 , the switch control block
turns off Q1 and turns on Q2, connecting GON to DRN.
GON can then be discharged through a resisor con-
nected between DRN and GND or AV DD . Q2 turns off
and stops discharging GON when V GON reaches 10
times the voltage on THR.
Operational Amplifiers
The MAX17014 has two operational amplifiers. The
operational amplifiers are typically used to drive the
LCD backplane (VCOM) or the gamma-correction
divider string. They feature ±150mA output short-circuit
current, 100V/μs slew rate, and 20MHz, -3dB band-
width. While the op amp is a rail-to-rail input and output
design, its accuracy is significantly degraded for input
voltages within 2V of its supply rails (OVIN, OGND).
Short-Circuit Current Limit and Input Clamp
The operational amplifiers limit short-circuit current to
approximately ±150mA (-250mA) if the output is direct-
ly shorted to OVIN (OGND). If the short-circuit condition
persists, the junction temperature of the IC rises until it
reaches the thermal-shutdown threshold (+160°C typ).
Once the junction temperature reaches the thermal-
shutdown threshold, an internal thermal sensor immedi-
ately sets the thermal-fault latch, shutting off all the IC’s
outputs. The device remains inactive until the input volt-
age is cycled. The operational amplifiers have 4V input
clamp structures in series with a 500 Ω resistance
(Figure 6).
The switch control block is disabled and DLP is held
low when EN1 or EN2 is low or the IC is in a fault state.
MAX17014
OVIN
POS1
NEG1
OUT1
± 4V
500 Ω
± 4V
500 Ω
POS2
NEG2
OUT2
OGND
OP AMP INPUT CLAMP STRUCTURE
Figure 6. Op Amp Input Clamp Structure
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17014ETM+ | 功能描述:其他电源管理 Power Supply for LCD TVs RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX17014ETM+T | 功能描述:显示驱动器和控制器 Power Supply for LCD TVs RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX17014EVKIT+ | 功能描述:电源管理IC开发工具 MAX17014 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 |
| MAX17015AETP+ | 功能描述:电池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17015AETP+T | 功能描述:电池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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