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MCP1602

2MHz 500mA Synchronous PFM/PWM Buck Regulator w/Power Good

Status: In Production

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
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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.


Additional 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
    • Adjustable Output Voltage:
      • 0.8V to 4.5V
    •  Fixed Output Voltage:
      • 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
    • Space Saving Packages:
      • 8-Lead MSOP
      • 8-Lead 3x3 DFN
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.7
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
4.5
Output Current (mA) max
500
Quiescent Current (mA) typ
0.045
Switching Frequency (kHz)
2000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 85
Vfb (V)
0.8
SHUTDOWN Current (µA) (Typ)
0.05
Light Load Efficiency Mode
Yes

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP1602-120I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-150I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-180I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-250I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-330I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-ADJI/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-FIXI/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-120I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-150I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-180I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-250I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-330I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-ADJI/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602T-FIXI/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
MCP1602-120I/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602-150I/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602-180I/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602-250I/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602-330I/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602-ADJI/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602-FIXI/MF
0.023800
0.041667
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-120I/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-150I/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-180I/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-250I/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-330I/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-ADJI/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
MCP1602T-FIXI/MF
0.023800
0.172727
8
DFN
3x3x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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