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EMP2112
1.2A High Efficiency Synchronous Buck Converter in SOT Package
产品详情
| Vin (min) (V) | 2.5 |
| Vin (max) (V) | 5.5 |
| Vout (min) (V) | 0.6 |
| Vout (max) (V) | 5.5 |
| Iout (max) (A) | 1.2 |
| Iq (typ) (mA) | 0.035 |
| Switching frequency (min) (kHz) | 1500 |
| Switching frequency (max) (kHz) | 1500 |
| Features | Enable, Light Load Efficiency, Light load efficiency, Power good, Synchronous Rectification |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Catalog |
| Regulated outputs (#) | 1 |
| Control mode | COT |
| Duty cycle (max) (%) | 100 |
| Type | Converter |
| EMP2112GV | SOT23-5 | SOT23 package, 5 pins 2.92mm x 2.8mm; 1.25 mm (Max) height |
| EMP2112PGV | SOT23-6 | SOT23 package, 6pins 2.92mm x 2.8mm; 1.25 mm (Max) height |
- 2.5V to 5.5V Input Voltage Range
- 35μA Operating Quiescent Current
- Internal Soft Startup
- Adjustable Output Voltage from 0.6 V to VIN
- 100% Duty Cycle for Lowest Dropout
- 1.5MHz Switching Frequency
- Integrated Low RDS(ON) Switches 200mΩ / 100mΩ
- Optimized PFM mode for battery applications to improve light load efficieny
- Power Good Output for EMP2112P
- Short circuit protection with Hiccup mode
- Thermal Shutdown Protection
- Available in SOT23-5 package and EMP2112P available in SOT23-6 pakcage
The EMP2112 device is a synchronous step-down buck DC-DC converter optimized for high efficiency and compact solution size. The device integrates switches capable of delivering an output current up to 1.2A. At medium to heavy loads, the device operates in pulse width modulation (PWM) mode with 1.5- MHz switching frequency. At light load, the device automatically enters PFM mode to maintain high efficiency over the entire load current range. In shutdown, the current consumption is reduced to less than 2 μA. The EMP2112 provides an adjustable output voltage via an external resistor divider. An internal soft start circuit limits the inrush current during startup. Other features like over current protection, thermal shutdown protection and power good are built-in. The device is available in a SOT23 package.
