Active Member
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[China]
Address: Room 36B1-B2, Building C, Electronics Science & Technology Building Shennan Mid-Road, Shenzhen China
Contact name:Sharon Yang
Anterwell Technology Ltd. |
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APW7080
4A, 26V, 380kHz, Asynchronous Step-Down Converter
Features
· Wide Input Voltage from 4.5V to 26V
· Output Current up to 4A
· Adjustable Output Voltage from 0.8V to 90%VIN
- 0.8V Reference Voltage
- ±2.5% System Accuracy
· 80mW Integrated P-Channel Power MOSFET
· High Efficiency up to 91%
-Pulse-Skipping Mode (PSM)/PWM ModeOperation
· Current-Mode Operation
- Stable with Ceramic Output Capacitors
- Fast Transient Response
· Power-On-Reset Monitoring
· Fixed 380kHz Switching Frequency in PWM Mode
· Built-in Digital Soft-Start
· Output Current-Limit Protection with Frequency Foldback
· 70% Undervoltage Protection
· Over-Temperature Protection
· <5mA Quiescent Current during Shutdown
· Thermal-Enhanced SOP-8P Package
· Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7080 is a 4A, asynchronous, step-down converter with
integrated 80mW P-channel MOSFET. The device, with current-mode
control scheme, can convert 4.5~26V input voltage to the output
voltage adjustable from 0.8 to 90% VIN to provide excellent output voltage regulation.
The APW7080 regulates the output voltage in automatic PSM/PWM mode
operation, depending on the output current, for high efficiency
operation over light to full load current.The APW7080 is also
equipped with power-onreset, soft-start, and whole protections
(undervoltage, over temperature, and current-limit) into a single
package. In shutdown mode, the supply current drops below 5mA.
This device, available in an 8-pin SOP-8P package, provides a very
compact system solution with minimal external components and good
thermal conductance.
Simplified Application Circuit
Applications
· LCD Monitor / TV
· Set-Top Box
· Portable DVD
· Wireless LAN
· ADSL, Switch HUB
· Notebook Computer
· Step-down Converters Requiring High Efficiency and 4A Output
Current
Absolute Maximum Ratings (Note 1)
| Symbol | Parameter | Rating | Unit | |
| VIN | VIN Supply Voltage (VIN to GND) | -0.3 ~ 30 | V | |
| VLX | LX to GND Voltage | > 100ns | -2 ~ VIN+0.3 | V |
| < 100ns | -5 ~ VIN+6 | V | ||
| VCC | VCC Supply Voltage (VCC to GND) | VIN > 6.2V | -0.3 ~ 6.5 | V |
| VIN £ 6.2V | < VIN+0.3 | V | ||
| VUGND_GND | UGND to GND Voltage | -0.3 ~ VIN+0.3 | V | |
| VVIN_UGND | VIN to UGND Voltage | -0.3 ~ 6.5V | V | |
| EN to GND Voltage | -0.3 ~ 20 | V | ||
| FB, COMP to GND Voltage | -0.3 ~ VCC +0.3 | V | ||
| Maximum Junction Temperature | 150 | °C | ||
| TSTG | Storage Temperature | -65 ~ 150 | °C | |
| TSDR | Maximum Lead Soldering Temperature, 10 Seconds | 260 | °C | |
Note 1: Stresses above those listed in “Absolute Maximum Ratings”
may cause permanent damage to the device.
Block Diagram
Stock Offer (Hot Sell)
| Part NO. | Q'ty | MFG | D/C | Package |
| AR8021-BL1E | 4500 | ATHEROS | 14+ | QFN48 |
| ADS8344NB | 4500 | TI | 15+ | SSOP20 |
| A1106LUA | 4500 | ALLEGRO | 14+ | SIP-3 |
| ADG412BN | 4480 | AD | 14+ | DIP-16 |
| LTC4088EDE#PBF | 4478 | LINEAR | 14+ | DFN |
| ADS8344E/2K5 | 4475 | TI | 14+ | SSOP20 |
| M41T62Q6F | 4469 | ST | 12+ | QFN |
| MAX3232EUE | 4461 | MAXIM | 15+ | TSSOP |
| AK4384ET-E2 | 4461 | AKM | 15+ | TSSOP-16 |
| ACS714ELCTR-30A-T | 4460 | ALLEGRO | 14+ | SOP-8 |
| LT1934ES6-1 | 4459 | LINEAR | 15+ | SOT-23-6 |
| MAX996ESD | 4458 | MAXIM | 12+ | SOP |
| ADS1255IDBR | 4450 | TI | 15+ | SSOP20 |
| ADP3208JCPZ | 4450 | AD | 15+ | LFCSP48 |
| MX25L512MC-12G | 4440 | MXIC | 13+ | SOP |
| XC3S50AN-4TQG144C | 4433 | XILINX | 15+ | QFP144 |
| MAX890LESA+ | 4430 | MAXIM | 07+ | SOP |
| PIC12F509-I/SN | 4426 | MICROCHIP | 10+ | SOP |
| LT1725CGN | 4425 | LINEAR | 14+ | SSOP-16 |
| MC68HC908QY4CPE | 4420 | FREESCALE | 14+ | DIP |
| LTC2294IUP | 4418 | LINEAR | 13+ | QFN |
