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参数资料
| 型号： | MAX17075ETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/23页 |
| 文件大小： | 0K |
| 描述： | IC DC-DC CONV W/CHRG PUMP 24TQFN |
| 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 |
| 电流 - 电源： | 4mA |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
Table 1. Component List
DESIGNATION
C1, C2
C3, C4, C7
C10, C14
DESCRIPTION
10μF ± 20%, 6.3V X5R ceramic capacitors
(0603)
Murata GRM188R60J106M
TDK C1608X5R0J106M
10μF ± 20%, 25V X5R ceramic capacitors
(1206)
Murata GRM31CR61E106M
TDK C3216X5R1E106M
1μF ±10%, 50V X7R ceramic capacitors
(1206)
Murata GRM31MR71H105KA
DESIGNATION
C11, C15, C16,
C17
D1
D2, D3, D4
L1
DESCRIPTION
0.1μF ± 10%, 50V X7R ceramic capacitors
(0603)
Murata GRM188R71H104K
TDK C1608X7R1H104K
3A, 30V Schottky diode (M-Flat)
Toshiba CMS02 (TE12L,Q) (Top mark S2)
220mA, 100V dual diodes (SOT23)
Fairchild MMBD4148SE (Top mark D4)
3.0μH, 3A DC inductor
Sumida CDRH6D28-3R0
TDK C3216X7R1H105K
Table 2. Component Suppliers
SUPPLIER
Fairchild Semiconductor
Sumida
TDK
Toshiba
PHONE
408-822-2000
847-545-6700
847-803-6100
949-455-2000
FAX
408-822-2102
847-545-6720
847-390-4405
949-859-3963
WEBSITE
www.fairchildsemi.com
www.sumida.com
www.component.tdk.com
www.toshiba.com/taec
Main Step-Up Regulator
The main step-up regulator employs a current-mode,
fixed-frequency PWM architecture to maximize loop
bandwidth and provide fast-transient response to
pulsed loads that are typical for TFT LCD panel source
drivers. The 1.2MHz switching frequency allows the use
of low-profile inductors and ceramic capacitors to mini-
mize the thickness of LCD panel design. The integrated
CLOCK
CURRENT-LIMIT
COMPARATOR
LOGIC
AND
DRIVER
LX
PGND
high-efficiency MOSFET and the built-in digital soft-start
function reduce the number of external components
required while controlling inrush currents. The output
voltage can be set from V IN to 18V with an external
resistive voltage-divider. The regulator controls the out-
SLOPE COMP
PWM
SOFT-
START
I LIMIT
put voltage and the power delivered to the output by
modulating the duty cycle (D) of the internal power
OSCILLATOR
COMPARATOR
∑
CURRENT
SENSE
MOSFET in each switching cycle. The duty cycle of the
MOSFET is approximated by:
D ≈ AVDD IN
V ? V
V AVDD
where V AVDD is the output voltage of the step-up regulator.
TO FAULT LOGIC
MAX17075
FAULT
COMPARATOR
1.0V
ERROR AMP
1.25V
FB
Figure 3 shows the functional diagram of the step-up
regulator. An error amplifier compares the signal at FB
to 1.25V and changes the COMP output. The voltage at
COMP sets the peak inductor current. As the load
varies, the error amplifier sources or sinks current to the
COMP output accordingly to produce the inductor peak
Maxim Integrated
COMP
Figure 3. Step-Up Regulator Functional Diagram
current necessary to service the load. To maintain sta-
bility at high duty cycles, a slope-compensation signal
is summed with the current-sense signal.
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17075EVKIT+ | 功能描述:电源管理IC开发工具 MAX17075 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 |
| MAX17077AETM+ | 功能描述:低压差稳压器 - LDO Hybrid 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX17077AETM+T | 功能描述:低压差稳压器 - LDO Hybrid 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX17077AETM+W | 制造商:Maxim Integrated Products 功能描述:INTERNAL-SWITCH BOOST REGULATOR - Rail/Tube |
| MAX17077ETM+ | 功能描述:低压差稳压器 - LDO Hybrid 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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