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| 型号： | MAX8792ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/28页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTRLR STEP-DWN 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | PWM 控制器 |
| 输入电压： | 2 V ~ 26 V |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 700µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX8792ETD+TDKR |
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Single Quick-PWM Step-Down
Controller with Dynamic REFIN
Table 1. Component Selection for Standard Applications
V OUT = 1.5V/1.05V AT 10A
V OUT = 3.3V AT 5A
V OUT = 1.5V AT 10A/1.05V AT
COMPONENT
Input Capacitor
Output Capacitor
Inductor
High-Side MOSFET
Low-Side MOSFET
(Figure 1)
V IN = 7V to 20V
R TON = 200k Ω (300kHz)
(2x) 10μF, 25V
Taiyo Yuden TMK432BJ106KM
(2x) 330μF, 6m Ω
Panasonic EEFSX0D331XR
1.0μH, 3.25m Ω
Würth 744 3552 100
Fairchild (1x) FDS8690
8.6m Ω /11.4m Ω (typ/max)
Fairchild (1x) FDS8670
4.2m Ω /5.0m Ω (typ/max)
(Figure 4)
V IN = 7V to 20V
R TON = 332k Ω (300kHz)
(2x) 10μF, 25V
Taiyo Yuden TMK432BJ106KM
(1x) 330μF, 18m Ω
SANYO 4TPE330MI
3.3μH, 14m Ω
NEC-TOKIN MPLC1040L3R3
Siliconix (1x) Si4916DY
N H = 18m Ω /22m Ω (typ/max)
N L = 15m Ω /18m Ω (typ/max)
7A (Figure 7)
V IN = 4V to 12V
R TON = 100k Ω (600kHz)
(2x) 10μF, 25V
Taiyo Yuden TMK432BJ106KM
(2x) 330μF, 7m Ω
NEC-TOKIN PSGD0E337M7
0.68μH, 4.6m Ω
Coiltronics FP3-R68
Fairchild (1x) FDS8690
8.6m Ω /11.4m Ω (typ/max)
Fairchild (1x) FDS8670
4.2m Ω /5.0m Ω (typ/max)
Table 2. Component Suppliers
MANUFACTURER
AVX Corp.
BI Technologies
Central
Semiconductor Corp.
Coiltronics
Fairchild
Semiconductor
International Rectifier
KEMET Corp.
NEC TOKIN America,
Inc.
Panasonic Corp.
WEBSITE
www.avxcorp.com
www.bitechnologies.com
www.centralsemi.com
www.cooperet.com
www.fairchildsemi.com
www.irf.com
www.kemet.com
www.nec-tokin.com
www.panasonic.com
MANUFACTURER
Pulse Engineering
Renesas Technology
Corp.
SANYO Electric Co.,
Ltd.
Siliconix (Vishay)
Sumida Corp.
Taiyo Yuden
TDK Corp.
TOKO America, Inc.
Würth Electronik
GmbH & Co. KG
WEBSITE
www.pulseeng.com
www.renesas.com
www.sanyo.com
www.vishay.com
www.sumida.com
www.t-yuden.com
www.component.tdk.com
www.tokoam.com
www.we-online.com
Detailed Description
The MAX8792 step-down controller is ideal for the low-
duty-cycle (high-input voltage to low-output voltage)
applications required by notebook computers. Maxim’s
proprietary Quick-PWM pulse-width modulator in the
MAX8792 is specifically designed for handling fast load
steps while maintaining a relatively constant operating
frequency and inductor operating point over a wide
range of input voltages. The Quick-PWM architecture
circumvents the poor load-transient timing problems of
fixed-frequency, current-mode PWMs while also avoid-
ing the problems caused by widely varying switching
frequencies in conventional constant-on-time (regard-
less of input voltage) PFM control schemes.
+5V Bias Supply (V CC /V DD )
The MAX8792 requires an external 5V bias supply in
addition to the battery. Typically, this 5V bias supply is
the notebook’s main 95% efficient 5V system supply.
Keeping the bias supply external to the IC improves
efficiency and eliminates the cost associated with the
5V linear regulator that would otherwise be needed to
supply the PWM circuit and gate drivers. If stand-alone
capability is needed, the 5V supply can be generated
with an external linear regulator such as the MAX1615.
The 5V bias supply powers both the PWM controller
and internal gate-drive power, so the maximum current
drawn is determined by:
I BIAS = I Q + f SW Q G = 2mA to 20mA (typ)
12
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相关代理商/技术参数 |
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|---|---|
| MAX8792EVKIT+ | 功能描述:电源管理IC开发工具 MAX8792 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 |
| MAX8794ETB/V+T | 功能描述:低压差稳压器 - LDO Low-Voltage DDR Linear Regulator 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 |
| MAX8794ETB+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE DDR LINEAR REGULATOR - Rail/Tube |
| MAX8794ETB+T | 功能描述:低压差稳压器 - LDO Low-Voltage DDR Linear Regulator 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 |
| MAX8795AETJ+ | 功能描述:直流/直流开关转换器 TFT-LCD DC/DC Converter 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 |
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