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参数资料
| 型号： | MAX17100ETM+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/35页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST INT-SWITCH 48-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | LCD 电视机/监控器 |
| 电源电压： | 2.5 V ~ 6 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（6x6） |
| 包装： | 带卷 (TR) |
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Internal-Switch Boost Regulator with Integrated Scan
Driver, VCOM Calibrator, and Op Amp for TFT LCDs
V MAIN
FROM CHARGE-PUMP
OUTPUT
GATE
DRVP
MAX17100
FBP
npn CASCODE
TRANSISTOR
pnp PASS
TRANSISTOR
V GHON
Figure 5. Using Cascaded npn for Charge-Pump Output
Voltages > 36V
Gate-On Linear-Regulator
Controller (REG_P)
The gate-on linear-regulator controller is an analog gain
block with an open-drain n-channel output. It drives an
external pnp pass transistor with a 6.8k ? base-to-emit-
ter resistor (Figure 2). Its guaranteed base drive sink
current is at least 1mA. The regulator including Q1 in
Figure 2 uses a 0.47μF ceramic output capacitor and is
designed to deliver 20mA at 25V. Other output voltages
and currents are possible with the proper pass transis-
tor and output capacitor. See the Pass-Transistor
Selection and Stability Requirements sections. REG P is
typically used to provide the TFT-LCD gate drivers’
gate-on voltage. Use a charge pump with as many
stages as necessary to obtain a voltage exceeding the
required gate-on voltage (see the Selecting the Number
of Charge-Pump Stages section). Note the voltage rat-
ing of DRVP is 36V. If the charge-pump output voltage
can exceed 36V, an external cascode npn transistor
should be added as shown in Figure 5. Alternately, the
linear regulator can control an intermediate charge-
pump stage while regulating the final charge-pump out-
put (Figure 6). REG P is enabled after the GATE voltage
reaches the gate-on threshold voltage (1.5V typ). Each
time it is enabled, the controller goes through a soft-
start routine that ramps up its internal reference DAC in
128 steps.
Figure 6. Linear Regulator Controls the Intermediate Charge-
Pump Stage
Gate-Off Linear-Regulator
Controller (REG N)
The gate-off linear-regulator controller (REG N) is an
analog gain block with an open-drain p-channel output.
It drives an external npn pass transistor with a 6.8k ?
base-to-emitter resistor (Figure 2). Its guaranteed base-
drive source current is at least 1mA. The regulator
including Q2 in Figure 2 uses a 0.47μF ceramic output
capacitor and is designed to deliver 20mA at -10V.
Other output voltages and currents are possible with the
proper pass transistor and output capacitor (see the
Pass-Transistor Selection and Stability Requirements
sections). REG N is typically used to provide the
TFT-LCD gate drivers’ gate-off voltage. A negative volt-
age can be produced using a charge-pump circuit as
shown in Figure 2. REG N is enabled after the GATE
voltage reaches the gate-on threshold voltage (1.5V
typ). Each time it is enabled, the control goes through a
soft-start routine that ramps down its internal reference
DAC from V REF to 250mV in 128 steps.
Operational Amplifiers
The MAX17100 has three operational amplifiers. The
operational amplifiers are typically used as the gamma-
correction divider string. They feature 45V/μs slew rate,
and 20MHz 3dB bandwidth. The rail-to-rail input and
output capability maximizes application flexibility.
20
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相关代理商/技术参数 |
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| MAX17100EVKIT+ | 功能描述:电源管理IC开发工具 MAX17100 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 |
| MAX17101+SMP | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX17101ETJ+ | 功能描述:DC/DC 开关控制器 Dual PWM Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX17101ETJ+T | 功能描述:DC/DC 开关控制器 Dual PWM Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX17101ETJ+TS | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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