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7A Constant On Time Synchronous Buck Regulator with I2C Production

Features
  • Pseudo frequency COT control
  • Extremely fast line/load transient response
  • I2C for output adjustment (3.4 Mbps)
  • 1.2 MHz switching frequency
  • Extremely low-RDSON MOSFETS
  • Input voltage rail 2.7V to 6V
  • Up to 7A output current
  • Power save mode for light-load efficiency
  • UVLO, OVP, and OCP
  • -40°C to 85°C ambient temperature
  • Available in QFN 2mm x 3mm 14 package
  • RoHS compliant

General Description
The APW7438A is a digitally controlled step-down regulator IC with an integrated 20mΩ high-side P-channel MOSFET and an 8mΩ low-side N-channel MOSFET. It features ANPEC's proprietary COT-mode control scheme for near-instantaneous correction to line/load transients for a voltage range of 2.7V to 6V, and 7A with constant frequency. The APW7438A is equipped with an automatic PFM/PWM mode operation. At light load, the IC operates in the PFM mode to reduce the switching losses and provides high efficiency over light to heavy loads with loading-modulated frequency. The APW7438A has an I2C serial interface port for output voltage margining and monitoring, if required (it can also operate in default mode). In addition it includes robust fault monitoring functions. The APW7438A is available in 0.8V default output voltage (no voltage divider is necessary) which can be changed from 0x01 Register.
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1A, Synchronous Buck Converter

Features
  • Input Voltage Range: 2.7V to 5.5V
  • Typical 0.6V Internal Reference Voltage
  • 1A Output Current
  • Constant on Time Mode Operation
  • 2.4MHz Force PWM Mode Operation Frequency
  • Stable with Low ESR Ceramic Capacitors
  • Power-On-Reset Detection on VIN
  • Integrated 0.5ms Soft Start Time and Output Discharge
  • Over-Temperature Protection
  • Over Voltage Protection
  • Under Voltage Protection
  • Small TDFN1.0x1.5-6 Package

General Description
The APW9169C is a 1A synchronous buck converter that uses constant on time mode control scheme to convert wide input voltage of 2.7V to 5.5V to outputs as low as 0.6V while providing excellent output voltage regulation. The APW9169C is also equipped with Power-on-reset, internal soft start and complete protections (under-voltage, over temperature and current-limit) into a single low cost TDFN1.0x1.5-6 package. The IC also provides output capacitor discharge when it is disabled via the discharge MOSFET.
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3-CH Buck Converter, 3-18V Input Voltage, Tiny Package

Features
  • Wide input voltage range:
- Channel 1 and 3 from 1.65V to 18V
- Channel 2 from 3V to 18V
  • 3A/2.5A/1.5A Output Current on Channel1/2/3
  • Typical 0.6V ±1% Internal Reference Voltage
  • Sync Pin Allows Synchronization to an External Clock from 1.8MHz to 2.4MHz
  • Optimized Upper and Lower MOSFETs RDS_on for max Efficiency:
- N-CH MOSFET (60 mΩ) for CH1 High Side
- N-CH MOSFET (90 mΩ) for CH2/3 High Side
- N-CH MOSFET (45 mΩ) for CH1 Low Side
- N-CH MOSFET (50 mΩ) for CH2/3 Low Side
  • Built in OVP, UVP, Current Limit, VIN OVP and OTP
  • Low Cost TQFN 4x4-20D Wettable Flanks Package
  • High Performance or Low Cost Configuration, Auto Mode or FPWM can be set by MODE PIN
  • Spread Spectrum Option and Power On Sequence can be configured by SEQ/SSP PIN

General Description
The APW9304H is a three-channel synchronous mode PWM converter with 3A continuous current capability for one channel and 2.5A continuous current capability for the other channel and 1.5A continuous current capability for the other one channel. Although the switching frequency of the APW9304H is fixed at 2.1MHz, it can also change the switching frequency via the EN/SYNC pin. The APW9304H also provides a 120-degree phase shifting technique and Spread Spectrum option to minimize the noise for reducing EMI. The output voltage of each channel can be adjusted using an external resistor divider. Other features include VIN OVP, VOUT OVP, UVP, current limit, and OTP. The internal switching frequency is set at 2.1MHz. Other features of the part include VIN OVP, OVP, UVP, Current Limit and OTP. The APW9304H is available in a TQFN 4x4-20D wettable flanks package with small size and excellent thermal capacity.
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Ultra-Low On-Resistance, 6A Dual Load Switch With Soft Start

Features
  • 20mΩ (Typical) On-resistance per Channel
  • 6A Continuous Current
  • Soft Start Time Programmable by External Capacitor
  • Wide Input Voltage Range (VIN): 0.8V to 5.5V
  • Supply Voltage Range (VBIAS): 3V to 5.5V
  • Output Discharge when Switch Disabled
  • Reverse Current Blocking when Switch Disabled
  • Over-Temperature Protection
  • Enable Input
  • Lead Free and Green Devices Available (RoHS Compliant)

General Description
The APL3528 is an ultra-low on-resistance, dual powerdistribution switch with external soft start control. It integrates two N-channel MOSFETs that can deliver 6A continuous load current each. The device integrates over-temperature protection. The over temperature protection function shuts down the Nchannel MOSFET power switch when the junction temperature rises beyond 160oC and will automatically turns on the power switch when the temperature drops by 40oC. The device is available in lead free TDFN2x3-14A packages.
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5.5V, 7A Low RDSON Power Load Switch with Current Monitoring

Features
  • N-CH MOSFET RDS(ON): 12mΩ(typ.)
  • Smaller than 1uA Shutdown Current
  • Ultra-Low Quiescent Current: Less than 50uA
  • Input Voltage Range (VIN): 0.7V ~ 5.5V
  • Bias Voltage Range (VCC): 3V ~ 5.5V
  • Built in Internal Charge Pump Function for Internal Gate Driver
  • Built in ADJ Current Limit Function
  • Built in Output Discharge Function
  • Built in Adjustable Soft Start Function by SS Pin
  • Built in Over-Temperature Protection
  • <200ns Short-Circuitry Response Protection
  • Built in Enable / Shutdown Control by EN Pin
  • Built in Power Good Indication Output
  • Built in IMON Function with 6% Accuracy
  • Tiny Small QFN2x2-12A Package
 
General Description
The APL3535 is a power-distribution switch with some protection functions that can deliver current up to 7A. The device incorporates a 12mΩ N-channel MOSFET power switch that is controlled by an enable logic pin and has a SS pin dedicated to soft start ramp-up rate control that can be used in application where the inrush current is concerned. The APL3535 integrates some protection features, including current limit protection, over temperature protection. The current limit protection can protect down-stream devices from catastrophic failure by limiting the output current at current-limit threshold during over-load or short-circuit events. The over temperature protection function shuts down the N-channel MOSFET power switch when the junction temperature rises beyond 155°C. Other features include an accurate current monitor function. The device is available in lead free QFN2x-12A package.
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Ultra-Low On-Resistance, Power Load Switch with Soft Start

Features
  • Ultra-Low On-Resistance :
- RDS(ON)=10.5mΩ at VIN=5V
- RDS(ON)=12mΩ at VIN=3.6V
- RDS(ON)=12.3mΩ at VIN=2.5V
- RDS(ON)=12.5mΩ at VIN=1.8V
- RDS(ON)=17.5mΩ at VIN=1V
  • Ultra-Low Quiescent Current: VIN=1V Condition, 10µA (Max.)
  • 3A Maximum Continuous Output Current
  • Supply Voltage Range from 0.95V to 5.5V
  • Built in Internal Charge Pump Function for Internal Gate Driver
  • Built in Internal Soft-Start Function : VIN=3.6V Condition, 800µs (Typ.)
  • Built in Enable/Shutdown Control
  • Built in Turn On Time : VIN=3.6V Condition, 860µs (Typ.)
  • Built in Reverse Current Block Function
  • Tiny small WLCSP 0.9x1.4-6 Package
  • Lead Free and Green Devices Available (RoHS Compliant)

General Description
The APL3537C is an ultra-low on-resistance, power-distribution switch with internal soft start control. The device is a N-channel MOSFET which needs only one input voltage from 0.95V to 5.5V. Built in internal charge pump function biases the N-MOS switch to achieve a minimum switch on-resistance. The APL3537C can be enabled by other power system. Pulling and holding the EN pin below 0.4V shuts off the output. The device is available in lead free WLCSP 0.9x1.4-6 package.
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USB Power-Distribution Switches

Features
  • VIN Input Voltage Range: 4.5 to 25V
  • 30V Absolute Ratings at VIN Pin
  • 15A Output Current Capability
  • Adjustable Soft-start Time by SS pin
  • Fast Over Current Protection Response Time
  • Wrong VIN Input Voltage Protection
  • Fault Report on ACOK Pin
  • Built-in Surge Protection when Surge Voltage over 27V
  • Built-in Thermal Shutdown Protection
  • Built-in Enable / Shutdown Control by DPREN Pin
  • Integrated Internal Charge Pump
  • Built-in Programmable Short Circuit or Over Current Protection Threshold Setting by ALSET pin
  • ESD Protection:
- EC61000-4-2 contact discharge over with 8kV
- HBM with over 2kV
- CDM with over 500V at VIN pin
  • Over-Temperature Protection
  • TQFN4x4-24 Package

General Description
The APL3576A is designed for desktop adapter applications. The low on resistance N-channel MOSFET power switch can satisfy the voltage drop requirements of USB specification. Protection features include current-limit protection, short-circuit protection, over-temperature protection, wrong VIN input voltage protection, surge protection, and reverse current blocking. Other features include a deglitched ACOK output to indicate the fault condition and an enable input to enable or disable the device.
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Stereo, Differential Input Cap-Free Line Driver

Features
  • Operating Voltage : 3V~3.6V
  • Differential Input
  • Ground Reference Output
- No Output Capacitor Required (for DC Blocking)
- Save the PCB Space
- Reduce the BOM Costs
- Improve the Low Frequency Response
  • Low Noise and THD+N
- SNR > 108dB
- Noise < 8µVrms
- THD+N < 0.02% at 20Hz~20kHz
  • Output Voltage Swing Can Reach 2.1Vrms/Ch into 2.5kΩ at VDD=3.3V
  • High PSRR : 80dB at 217Hz
  • Fast Start-up Time : 500µs
  • Integrate the De-Pop Circuitry
  • Thermal and Short-Circuit Protection
  • Surface-Mount Packaging
- SOP-14
- TSSOP-14
  • Lead Free and Green Devices Available (RoHS Compliant)

General Description
The APA2171 is a stereo, differential input, single supply, and cap-free line driver, which is available in SOP-14 and TSSOP-14 packages. The APA2171 is ground-reference output, and doesn’t need the output capacitors for DC blocking. The advantages of eliminating the output capacitor are saving the cost, eliminating component height, and improving the low frequency response. The external gain setting is recommended using from ±1V/ V to ±10V/V. High PSRR provides increased immunity to noise and RF rectification. APA2171 has shutdown and under-voltage detector function for Depop solution. The APA2171 is capable of driving 2.1Vrms at 3.3V into 2.5kΩ load, and provides short-circuit and thermal protection.
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Three-Phase Full-wave Sine-wave Brushless Motor Driver

Features
  • Three-Phase Full-Wave Sine-Wave Driver
  • Sensor-Less Driver Control
  • PWM Speed Control
  • Minimum Speed Setting
  • Power Saving Function
  • Built-in 5V LDO Regulator
  • Built-in Current Limit Circuit
  • Built-in Over Current Protection
  • Built-in Lock Protection and Auto Restart Function
  • Soft Start Function
  • FG, 1/2FG, RD or 1/3FG Output
  • Built-in Thermal Shutdown Protection

General Description
The APX9323B is a three-phase full-wave sine-wave brushless motor drive by sensor-less. This IC built-in direct PWM input speed control, current limit and soft start features suitable for the three-phase brushless DC motors. The APX9323B is available in VTDFN3x3-10 package (see Pin Configuration).
Application
Fan

Fan

驅動IC 系列應用於 : 桌機、筆記本、伺服器、工業產品、汽車、家電、工具機、機器人……能提供完整的馬達驅動方案

近期推出數位型調控自動偵測IC,克服許多因極性與機構產生的共振問題...

Notebook
為採用 Intel、AMD CPU 的筆記型電腦提供完整電源解決方案

產品包括 DC/DC 轉換器/控制器、線性穩壓器、負載開關和 USB 端口解決方案等...

Motherboard
為採用 Intel、AMD CPU 和 DDR 存儲器的主機板提供完整電源解決方案

產品包括 DC/DC 轉換器/控制器、線性穩壓器、負載開關和 USB-C 接口解決方案等...

LCD

LCD

針對電視及顯示器應用,提供電源管理IC,LED 驅動IC、音頻放大器、光學感測IC等......

所有IC都內建過度高溫及過載電流保護裝置能預防其他零組件於異常狀況受到破壞

Surveillance
為消費性、可攜式/IOT和車用電子產品,提供單獨高壓DC/DC電源解決方案和高整合/客製化 PMICs

提供低元件數量設計和低靜態電流的特性,是空間受限的 PCBs 和電池供電應用的理想選擇

Memory
為 DDR 記憶體提供各種分離或整合化的電源解決方案

推出的全新整合式電源方案是滿足其高性能、高可靠性需求的最佳選擇...

SPS

SPS

能夠滿足高能源效益、能源密度及可靠度等標準的解決方案

提供多元的品質半導體解決方案組合,能為客戶提供適用於交換式電源供應器的最佳產品

Comm.
為小型蜂窩基地台、無源光網絡、路由器和電視機上盒提供廣泛的解決方案

產品提供高效率、高密度,和靈活性,可幫助設計人員在狹小的機體尺寸中,實現具有成本效益的高性能應用

VGA Card
顯示卡是以圖形處理器為核心,為顯示設備提供顯示訊息的硬體裝置

提供了各式電源解決方案以及負載開關,以滿足其高性能計算和顯示的需要...

Optical
在TV、Notebook的應用中,為符合EnergyStar 及 TUV Evey comfortable新規範,開發ALS、RGB Sensor、Spectrum Sensor。
Storage
為固態硬碟 (SSD) 和伺服器提供具有低能耗、精確感應和高效能的電源管理產品

提供完整的解決方案,來支援專門為數據中心開發的平台...

Automotive
茂達電子為汽車電子提供了完整的電源解決方案,規劃支援輸入電壓範圍從 3V 到 42V,並提供輸出電流範圍從 1A 到 6A。

此外,茂達電子致力於降低 EMI (Out-of-Phase operation & Spread spectrum),並提供...

About Us
品質保證 是茂達對社會的承諾

茂達電子成立於1997年10月,為台灣第一家掛牌之Power IC (功率積體電路) 設計公司。為滿足高端市場需求,茂達電子於2000年啟動轉型,大幅建置數位/混合 IC 設計能量與相關產品線,成為Power-based mix-signal IC 供應商,提供客戶完整的Mix-signal IC 解決方案。

持續改善

持續改善

客戶滿意

客戶滿意

品質承諾

品質承諾

全員參與

全員參與

精準到位

精準到位

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APW7720 PMIC with 7 Bucks Converters, 6 LDOs, 2 LSs and Flexible System Settings via I2C and MTP
DATE 2024/06/17
產品訊息

APW7720 PMIC with 7  Bucks Converters, 6 LDOs, 2 LSs and Flexible System Settings via I2C and MTP

The APW7720 Power Management IC (PMIC) only requires one supply input, LI-ION Battery (3.0~4.3V) or 5.0V, generates seven PWM step-down converters, five low-noise LDOs, one RTC-dedicated LDO, and two enable logic control.

113年第一季法人說明會
DATE 2024/05/17
公司訊息

113年第一季法人說明會

本公司受邀參加櫃買中心業績發表會

茂達電子公佈113年第一季合併財務報表,稅後每股盈餘為新台幣2.34元
DATE 2024/05/10
財務訊息

茂達電子公佈113年第一季合併財務報表,稅後每股盈餘為新台幣2.34元

茂達電子今(5月10日)召開董事會,通過113年第一季財務報表。

Discover the APW8895: a Synchronous NVDC Buck-Boost Switching Charger Controller
DATE 2024/04/24
產品訊息

Discover the APW8895: a Synchronous NVDC Buck-Boost Switching Charger Controller

This versatile device seamlessly transitions between buck, buck-boost, and boost modes, catering to 2- to 4-cell Li-ion batteries.

ANPEC Collaborates with Valens Semiconductor to Deliver Optimized Automotive Power Solutions
DATE 2024/04/08
產品訊息

ANPEC Collaborates with Valens Semiconductor to Deliver Optimized Automotive Power Solutions

We are thrilled to announce a collaboration between ANPEC and Valens to develop cutting-edge solutions for the automotive industry. The companies collaborated on integrating ANPEC's APW9304H, an AEC-Q100 qualified Power Management IC, known for its ultra-low EMI feature and flexible power sequencing, to Valens' VA7000 and VA6000 series product reference designs for ADAS, autonomous driving and in-car entertainment systems.

113年股東常會
DATE 2024/02/27
公司訊息

113年股東常會

股東常會
時間 : 113/06/21 9:00 A.M.

茂達電子公佈112年全年合併財務報表,稅後每股盈餘為新台幣7元
DATE 2024/02/26
財務訊息

茂達電子公佈112年全年合併財務報表,稅後每股盈餘為新台幣7元

茂達電子今(2月26日)召開董事會,通過112年度財務報表。

APW9304H is an ultra-low EMI triple buck converter and designed for automotive applications (AEC-Q100)
DATE 2024/01/12
產品訊息

APW9304H is an ultra-low EMI triple buck converter and designed for automotive applications (AEC-Q100)

Meet the APW9304H, an advanced triple buck converter designed for automotive excellence (AEC-Q100).

112年第三季線上法人說明會
DATE 2023/11/22
公司訊息

112年第三季線上法人說明會

本公司受邀參加康和綜合證券線上法人說明會

茂達電子公佈112年第三季合併財務報表,稅後每股盈餘為新台幣4.88元
DATE 2023/11/10
財務訊息

茂達電子公佈112年第三季合併財務報表,稅後每股盈餘為新台幣4.88元

茂達電子今(11月10日)召開董事會,通過112年第三季財務報表。

茂達電子公佈112年第二季合併財務報表,稅後每股盈餘為新台幣2.68元
DATE 2023/08/09
財務訊息

茂達電子公佈112年第二季合併財務報表,稅後每股盈餘為新台幣2.68元

茂達電子今(8月9日)召開董事會,通過112年第二季財務報表。

【社會關懷】熱血茂達,缺你不型
DATE 2023/07/05
社會參與

【社會關懷】熱血茂達,缺你不型

今年不時傳出血庫缺血的警訊,茂達同仁秉持 "捐血一袋,救人一命" 的理念捐出自己滿腔熱血。本次活動總共捐出106袋血。

【社會關懷】春日獻愛
DATE 2023/04/12
社會參與

【社會關懷】春日獻愛

本著關懷弱勢回饋社會的精神,向喜憨兒烘焙坊採購289份點心餐盒,費用合計77980元。

【環境保護】竹北水月公園淨灘
DATE 2023/03/26
社會參與

【環境保護】竹北水月公園淨灘

茂達電子的同仁其中有部分成員攜帶家中小朋友一同共襄盛舉,淨灘時面對需要攀爬堤防的地形毫無懼色,更是爭先恐後地往遠處及靠近河口的泥濘處移動,只為了撿取更多垃圾!垃圾主要分布為寶特瓶、玻璃瓶、鐵鋁罐及塑膠袋等各種民生用品及保麗龍漁具、漁業用浮球等。大人及小孩合計46人參與本次活動,共清除283公斤海洋廢棄物。

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