MAX17644
4.5V to 36V, 2.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter
広入力電圧、2.7A FET内蔵同期整流バックコンバータ、産業アプリケーションに最適
MyMaxim のご登録製品の詳細
主な特長
アプリケーション/用途
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 36 |
| VOUT1 (V) (min) | 0.9 |
| VOUT1 (V) (max) | 32.4 |
| IOUT1 (A) (max) | 2.7 |
| Switch Type | Internal |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| ICC (mA) (typ) | 0.05 |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 400-2200 |
| Design Tools | EE-Sim |
| Package/Pins | TQFN-CU/16 |
| Budgetary Price (See Notes) | 1.18 |
簡易ブロック図
Technical Docs
| データシート | 4.5V to 36V, 2.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter | Jun 07, 2021 |
パラメーター
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 36 |
| VOUT1 (V) (min) | 0.9 |
| VOUT1 (V) (max) | 32.4 |
| IOUT1 (A) (max) | 2.7 |
| Switch Type | Internal |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| ICC (mA) (typ) | 0.05 |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 400-2200 |
| Design Tools | generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=26769', '') |
| Package/Pins | TQFN-CU/16 |
| Budgetary Price (See Notes) | 1.18 |
主な特長
- Reduces External Components and Total Cost
- No Schottky - Synchronous Operation
- Internal Compensation Components
- All-Ceramic Capacitors, Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 36V Input
- Adjustable Output Voltage Range from 0.9V up to 90% of VIN
- Delivers up to 2.7A Over the Temperature Range
- 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
- Available in a 16-Pin, 3mm x 3mm TQFN Package
- Reduces Power Dissipation
- Peak Efficiency of 95.41%
- PFM and DCM Modes Enable Enhanced Light- Load Efficiency
- Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
- 2.8μA Shutdown Current
- Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Overload Protection
- Adjustable and Monotonic Startup with Prebiased Output Voltage
- Built-in Output-Voltage Monitoring with Active-Low RESET
- Programmable EN/UVLO Threshold
- Overtemperature Protection
- CISPR32 Class B Compliant
- Wide -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
アプリケーション/用途
- 産業制御用電源
- 汎用PoL (Point-of-Load)
- 分散電源レギュレーション
- 基地局電源
- ACアダプタトランスレギュレーション
- 高電圧シングルボードシステム
説明
The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAX17644 is a high-efficiency, high-voltage, Himalaya synchronous step-down DC-DC converter with integrated MOSFETs operating over an input-voltage range of 4.5V to 36V. The device can deliver up to 2.7A of current. The MAX17644 is available in three variants: MAX17644A, MAX17644B, and MAX17644C. The MAX17644A and MAX17644B are fixed 3.3V and fixed 5V output parts, respectively. The MAX17644C is an adjustable output voltage (from 0.9V up to 90% of VIN) part. Built-in compensation across the output-voltage range eliminates the need for external compensation components.
The MAX17644 features peak-current mode control architecture. The device can be operated in the forced pulse- width modulation (PWM), or pulse-frequency modulation (PFM), or discontinuous-conduction mode (DCM) to enable high efficiency under full-load and light-load conditions. The MAX17644 offers a low minimum on-time that allows high switching frequencies and a smaller solution size.
The feedback-voltage regulation accuracy over -40°C to +125°C for the MAX17644A/MAX17644B/MAX17644C is ±1.2%.The device is available in a 16-pin (3mm x 3mm) TQFN package. Simulation models are available.
簡易ブロック図
Technical Docs
| データシート | 4.5V to 36V, 2.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter | Jun 07, 2021 |
見積もり請求