Diodes Incorporated PAM2401 Step-Up DC to DC Converters
Diodes Inc. PAM2401 DC to DC Converters are low voltage 1MHz step-up DC-DC converters designed to meet the heightened efficiency requirements of portable devices including battery backups, cordless phones, and GPS receivers. With an operational efficiency as high as 95%, this synchronous converter provides true output disconnect to prevent leakage and ensures safe start-up at an input as low as 1V. The PAM2401 offers a programmable current limit of 1.0A to 3.0A for its lower operating voltage input range of 0.9V to 4.75V.
To help maximize battery life, PAM2401 automatically enters a high-efficiency pulse-skipping mode when driving light loads. In shutdown, quiescent current is less than 1µA. By operating at a high fixed-switching frequency and integrating an N-channel MOSFET switch, a P-channel synchronous rectifier and a power-good indicator into MSOP-8 and U-DFN3030-12 packages, the PAM2401 reduces the number and size of external components and overall board space requirement. The converter also provides over-voltage and over-temperature protection functions, with the device's soft-start circuit ensuring safe automatic restart. Other features include anti-ringing control and hiccup-mode short-circuit protection.
Features
- Up to 95% Efficiency
- True Output Disconnect
- Inrush Current Limiting When Power On
- Output Current up to 1000mA at VIN= 3V and VOUT= 5.0V
- Fixed Frequency Operation Up to 1MHz
- 0.9V to 4.75V Input Range
- 2.5V to 5.0V Adjustable Output Voltage
- Guaranteed 1.0V Start-Up
- Programmable Current Limit
- Internal Soft-Start
- Internal Compensation
- Pulse Sipping Mode at Light Load Operation
- Hiccup Mode Short Protection
- Over Voltage Protection
- Over Temperature Protection
- <1μA Shutdown Current
- Power Good Indicator
- MSOP-8 and U-DFN3030-12 packages
Applications
- Handheld Computers
- Cordless Phones
- GPS Receivers
- Battery Backup Supplies
Application Circuit
發佈日期: 2014-07-24
| 更新日期: 2020-05-20