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MIC2954

Improved LP2954 Low Drop-out Regulator

Status: In Production

Features:

  • High-accuracy: 5V, guaranteed 250mA output
  • Low quiescent current
  • Low dropout voltage
  • Extremely tight load and line regulation
  • Very low temperature coefficient
  • Current and thermal limiting
  • Input can withstand -20V reverse battery and +60V positive transients
  • Error flag warns of low output voltage
  • Logic-controlled electronic shutdown
  • Output programmable from 1.24V to 29V (MIC2954-07/08)
  • Available in TO-220, TO-92, and surface-mount SOT-223 and SOP-8 packages
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2954 is a "bulletproof", efficient voltage regulator with very low dropout voltage (typically 40mV at light loads and 375mV at 250mA) and low quiescent current (120µA typical). The quiescent current of the MIC2954 increases only slightly in dropout, thus prolonging battery life. Key MIC2954 features include protection against reversed battery, fold-back current limiting, and automotive load-dump protection (60V positive transient).

The MIC2954-07/08BM is an adjustable version that includes an error flag output that warns of a low output voltage, which is often due to failing batteries on the input. This may also be used as a power-on reset. A logic-compatible shutdown input is provided which enables the regulator to be switched on and off. This part may be pin-strapped for 5V output or programmed from 1.24V to 29V with the use of two external resistors.

The MIC2954 is available in two voltage tolerances, ±0.5% maximum and ±1% maximum. Both are guaranteed for junction temperatures from -40°C to +125°C.

The MIC2954 has a very low output voltage temperature coefficient and extremely good load and line regulation (0.04% typical).

Additional Features
    • High-accuracy: 5V, guaranteed 250mA output
    • Low quiescent current
    • Low dropout voltage
    • Extremely tight load and line regulation
    • Very low temperature coefficient
    • Current and thermal limiting
    • Input can withstand -20V reverse battery and +60V positive transients
    • Error flag warns of low output voltage
    • Logic-controlled electronic shutdown
    • Output programmable from 1.24V to 29V (MIC2954-07/08)
    • Available in TO-220, TO-92, and surface-mount SOT-223 and SOP-8 packages
Parametrics
Name
Value
Product Type
Single LDOs
# of Out
1
IOUT #1
250
IOUT #2
n/a
IOUT #3
n/a
IOUT #4
n/a
IOUT (mA)
250
VIN Min (V)
2
VIN Max (V)
30
VOUT (V)
5.0, Adj
Voltage Drop Typ (mV)
375
IGND Typ (µA)
140
Tol Typ %
±1
Noise (µV) rms
260
Soft Start Pin
Load Dump
Yes
Rev Bat
Yes
Reverse Current Protect

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
MIC2954-07YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2954-08YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2954-07YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2954-08YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2954-02WS
0.123000
0.243590
3
SOT-223
-
Matte Tin
e3
MIC2954-02WS-TR
0.123000
0.440000
3
SOT-223
-
Matte Tin
e3
MIC2954-03WS
0.123000
0.243590
3
SOT-223
-
Matte Tin
e3
MIC2954-03WS-TR
0.123000
0.440000
3
SOT-223
-
Matte Tin
e3
MIC2954-02WT
1.890200
2.660000
3
TO-220
-
Matte Tin
e3
MIC2954-03WT
1.890200
2.660000
3
TO-220
-
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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