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MIC94345

500mA Fixed Output LDO with Ripple Blocker Technology

Status: In Production

Features:

  • 1.8V to 3.6V input voltage range
  • Active noise rejection over a wide frequency band: >50dB from 10Hz to 5MHz at 500mA load
  • Rated to 500mA output current
  • Fixed and adjustable output voltages
  • Optional output auto-discharge when disabled
  • Current-limit and thermal-limit protected
  • 1.6mm x 1.6mm, 6-pin Thin DFN
  • Logic-controlled enable pin
  • -40°C to +125°C junction temperature range
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC943x5 Ripple Blocker™ is a monolithic integrated circuit that provides low-frequency ripple attenuation (switching noise rejection) to a regulated output voltage. This is important for applications where a DC/DC switching converter is required to lower or raise a battery voltage but where switching noise cannot be tolerated by sensitive downstream circuits such as in RF applications. The MIC943x5 maintains high power supply ripple rejection (PSRR) with input voltages operating near the output voltage level to improve overall system efficiency. A low-voltage logic enable pin facilitates ON/OFF control at typical GPIO voltage levels.

The MIC943x5 operates from an input voltage of 1.8V to 3.6V. The MIC943x5 options include fixed (MIC94345/55) or adjustable (MIC94325) output voltages. The MIC94355 version offers an auto-discharge to discharge the output capacitor when the part is disabled.

Packaged in a 6-pin 1.6mm x 1.6mm Thin DFN, the MIC943x5 has a junction operating temperature range of -40°C to +125°C.

Additional Features
    • 1.8V to 3.6V input voltage range
    • Active noise rejection over a wide frequency band: >50dB from 10Hz to 5MHz at 500mA load
    • Rated to 500mA output current
    • Fixed and adjustable output voltages
    • Optional output auto-discharge when disabled
    • Current-limit and thermal-limit protected
    • 1.6mm x 1.6mm, 6-pin Thin DFN
    • Logic-controlled enable pin
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Product Type
Single LDOs/Ripple blocker
# of Out
1
IOUT #1
500
IOUT #2
n/a
IOUT #3
n/a
IOUT #4
n/a
IOUT (mA)
500
VIN Min (V)
1.8
VIN Max (V)
3.6
VOUT (V)
1.2, 1.5, 1.8, 2.8, 3.3
Voltage Drop Typ (mV)
100
IGND Typ (µA)
170
Tol Typ %
±1
Noise (µV) rms
83
PSRR 1 kHz (dB)
85
Soft Start Pin
Load Dump
Rev Bat
Reverse Current Protect

Documents

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Data Sheet

11/09/2015
500KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC94345-FYMT-TR
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-PYCS-TR
0.000000
6
WLCSP
-
SAC
e8
MIC94345-4YMT-T5
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-4YMT-TR
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-GYMT-TR
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-MYMT-T5
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-MYMT-TR
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-SYMT-T5
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-SYMT-TR
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-GYMT-T5
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
NiPdAu
e4
MIC94345-FYMT-T5
0.004400
0.548600
6
UDFN
1.6x1.6x0.6mm
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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