ELM604PA
1.4MHz, 800mA dual PWM step-down converter
ELM604PA consists of dual high efficiency PWM step-down DC/DC converters operated with current mode and constant frequency. For each converter the integration of a main switch and a synchronous rect-ifier eliminates the use of an external Schottky diode. ELM604PA is ideal for the application of portable electronic devices with a single cell Lithium-ion (Li+) battery. Each converter can supply 800mA of load current from a 2.5V to 6V input voltage. The output voltage can be regulated as low as 0.6V. It can also run at 100% duty cycle for low dropout applications.
| Current mode operation | |
|---|---|
| Thermal shutdown protection | |
| Short circuit protection | |
| Constant frequency operation | Typ.1.4MHz |
| Output current | 800mA (on each channel) |
| Low output voltage | 0.6V |
| High efficiency | Max.95% |
| Shutdown current | Typ.0.1µA |
| Supply voltage | 2.5V to 6.0V |
| Full duty ratio | 0 to 100% (in dropout) |
| Package | TDFN10-3x3 |
| Datasheet | ELM604PA |
- Application
- PDAs
- MP3 players
- Portable instruments
- Cellular and smart phones
- Digital still and video cameras
- Microprocessors and DSP core supplies
Absolute Maximum Ratings
| Parameter | Symbol | Limit | Unit |
|---|---|---|---|
| VIN1/VIN2 power supply voltage | Vin | -0.3 to +6.5 | V |
| Apply voltage to SW1/SW2 | Vsw | -0.3 to Vin+0.3 | V |
| Apply voltage to FB1/FB2 | Vfb | -0.3 to Vin1/Vin2 | V |
| Apply voltage to EN1/EN2 | Ven | -0.3 to Vin1/Vin2 | V |
| Operating temperature range | Top | -40 to +85 | °C |
| Storage temperature range | Tstg | -65 to +150 | °C |
Block diagram
