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MIC68220

Dual 2A with Ramp Control and Tracking

Status: In Production

Features:

  • Stable with 4.7µF ceramic output capacitor
  • Input voltage range: 1.65V to 5.5V
  • 0.5V reference
  • ±1.0% initial output tolerance
  • 2A maximum output current - peak start up
  • 1A Continuous operating current
  • Tracking on turn-on and turn-off with pin strapping
  • Timing controlled sequencing on/off
  • Programmable Ramp Control™ for in-rush current limiting and slew rate control of the output voltage on Turn-On and Turn-Off
  • Power-on Reset (POR) supervisor with programmable delay time
  • Single Master can control multiple Slave regulators with tracking output voltages
  • Maximum dropout (VIN - VOUT) of 500mV over temperature at 1A output current
  • Fixed and adjustable output voltages
  • Excellent line and load regulation specifications
  • Logic controlled shutdown
  • Thermal shutdown and current limit protection
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC68220 is a dual high peak current LDO regulator designed specifically for powering applications such as FPGA core voltages that require high start-up current with lower nominal operating current. Capable of sourcing 2A of current per channel for start-up. The MIC68220 can also implement a variety of power-up and power-down protocols such as sequencing, tracking, and ratiometric tracking.

The MIC68220 operates from a wide input range of 1.65V to 5.5V, which includes all of the main supply voltages commonly available today. It is designed to drive digital circuits requiring low voltage at high currents (i.e. PLDs, DSP, microcontroller, etc.). The MIC68220 incorporates a delay pin (Delay) for control of power on reset output (POR) at turn-on and power-down delay at turn-off. In addition there is a Ramp Control (RC) pin for either tracking applications or output voltage slew rate adjustment at turn-on and turn-off. This is important in applications where the load is highly capacitive and in-rush currents can cause supply voltages to fail and microprocessors or other complex logic chips to hang up.

The MIC68220 can be configured in two modes. In tracking mode, the output voltage of Vout1 drives the RC2 pin so that the Vout2 tracks Vout1 during turn-on and turn-off. In sequencing mode, POR1 of Vout1 drives the enable pin (EN2) of Vout2 so that it turns on after the Vout1 and turns off before (or after) Vout1. This behavior is critical for power-up and power-down control in multi-output power supplies. The MIC68220 is fully protected offering both thermal and current limit protection, and reverse current protection.

Additional Features
    • Stable with 4.7µF ceramic output capacitor
    • Input voltage range: 1.65V to 5.5V
    • 0.5V reference
    • ±1.0% initial output tolerance
    • 2A maximum output current - peak start up
    • 1A Continuous operating current
    • Tracking on turn-on and turn-off with pin strapping
    • Timing controlled sequencing on/off
    • Programmable Ramp Control™ for in-rush current limiting and slew rate control of the output voltage on Turn-On and Turn-Off
    • Power-on Reset (POR) supervisor with programmable delay time
    • Single Master can control multiple Slave regulators with tracking output voltages
    • Maximum dropout (VIN - VOUT) of 500mV over temperature at 1A output current
    • Fixed and adjustable output voltages
    • Excellent line and load regulation specifications
    • Logic controlled shutdown
    • Thermal shutdown and current limit protection
Parametrics
Name
Value
Product Type
Dual LDOs
# of Out
2
IOUT #1
2000
IOUT #2
2000
IOUT #3
n/a
IOUT #4
n/a
IOUT (mA)
2000
VIN Min (V)
1.65
VIN Max (V)
5.5
VOUT (V)
Adj/Adj
Voltage Drop Typ (mV)
300
IGND Typ (µA)
1500
Tol Typ %
±2
PSRR 1 kHz (dB)
40
Soft Start Pin
Yes
Load Dump
Rev Bat
Reverse Current Protect

Documents

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Data Sheets

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC68220YML Evaluation Board
MIC68220YML Evaluation Board ( MIC68220YML-EV )

The MIC68220 Evaluation Board contains a MIC68220 chip with built-in resistor dividers, delay and ramp capacitors, and programmable jumpers to allow a variety of Master/Slave configurations including sequencing, tracking, and ratiometric tracking.

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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
MIC68220YML-TR
0.055400
0.834700
20
VDFN
4x5x0.9mm
NiPdAu
e4
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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