MCP1602T-ADJI/MS More Semiconductors - ICs by Microchip Technology
2MHz 500mA Synchronous PFM/PWM Buck Regulator w/Power Good
| Status: | Active |
|---|---|
| Series: | MCP1602 |
| RoHS: | Compliant |
The MCP1602 is a high efficient, fully integrated 500 mA synchronous buck regulator with a power-good monitor. The 2.7V to 5.5V input voltage range and low quiescent current (45 µA, typical) makes the MCP1602 ideally suited for applications powered from 1-cell Li-Ion or 2-cell/3-cell NiMH/NiCd batteries.
At heavy loads, the MCP1602 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-size solution. When the load is reduced to light levels, the MCP1602 automatically changes operation to a PFM mode to minimize quiescent current draw form the battery. No intervention is necessary for a smooth transition from one mode to another. These two modes of operation allow the MCP1602 to achieve the highest efficiency over the entire operating current range.
The open-drain power-good feature of the MCP1602 monitors the output voltage and provides indication when the output voltage is within 94% (typical) of the regulation value. The typical 2% hysteresis in the power-good transition threshold as well as a 262 ms (typical) delay time ensures accurate power good signaling.
The MCP1602 is available in either the 8-pin DFN or MSOP package. It is also available with either an adjustable or fixed output voltage. The available fixed output voltage options are 1.2V, 1.5V, 1.8V, 2.5V and 3.3V.
Additional protection features include: UVLO, overtemperature, and overcurrent protection.
Features
| Over 90% Typical Efficiency |
| Output Current: Up To 500 mA |
| Power-Good Output with 262 ms Delay |
| Low Quiescent Current: 45 μA (typical) |
| Low Shutdown Current: 0.05 μA (typical) |
| Automatic PWM to PFM Mode Transition |
| 0.8V to 4.5V |
| 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V |
| 2.0 MHz Fixed-Frequency PWM (Heavy Load) |
| Internally Compensated |
| Undervoltage Lockout (UVLO) |
| Overtemperture Protection |
| Overcurrent Protection |
| 8-Lead MSOP |
| 8-Lead 3x3 DFN |
Specifications
| Regulator Type | Step Down (Buck) |
|---|---|
| Switching Frequency (kHz) | 2000 |
| Input Voltage Range Min | 2.7 |
| Input Voltage Range Max | 5.5 |
| Output Current | 500 |
| Temp Range Min | -40 |
| Temp Range Max | 85 |
| Vout Min (V) | 0.8 |
| Vout Max (V) | 4.5 |
| Quiescent Current (mA) typ | 0.045 |
| Light Load Efficiency Mode | Yes |
| Automotive Rated | No |
| SHUTDOWN Current (µA) (Typ) | 0.05 |
| # of Outputs | 1 |
| Vfb (V) | 0.8 |
| Synchronous Rectifier | Yes |
| Pins | Packaging | 8 | MSOP |
| Temp Range | -40C to +85C |
| Packing Media | Tape and reel (2500) |
Environmental Information
| JEDEC Indicator | e3 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.0256 |
| Shipping Weight (kg) | 0.2156 |
| Lead Count | 8 |
| Package Type | MSOP |
| Package Width or Size | 3x3mm |
| Soldering Composition | Matte Tin |
Alternative Descriptions
| Ic,smps Controller,voltage-Mode,tssop,8Pin,plastic Rohs Compliant: Yes |Microchip MCP1602T-ADJI/MS | Newark Electronics |
| Conv DC-DC Single Step Down 2.7V to 5.5V 8-Pin MSOP T/R | Avnet America |
| 500 MA BUCK REGULATOR W/POWER GOOD | Microchip Technology |
| 2.0MHz, 0.5A, Synch-Buck PFM/PWM Reg | Microchip Technology Inc. MCP1602T-ADJI/MS | RS Americas |
Frequently Asked Questions
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