LTC3025-1/LTC3025-2/LTC3025-3/LTC3025-4 - 500mA Micropower VLDO Linear Regulator

Features

  • Wide Input Voltage Range: 0.9V to 5.5V
  • Stable with Ceramic Capacitors
  • Very Low Dropout: 85mV at 500mA
  • Adjustable Output Range: 0.4V to 3.6V (LTC3025-1)
  • Fixed Output: 1.2V(LTC3025-2), 1.5V(LTC3025-3),
    1.8V(LTC3025-4)
  • ±2% Voltage Accuracy over Temperature,  Supply and Load
  • Low Noise: 80μVRMS (10Hz to 100kHz)
  • BIAS Voltage Range: 2.5V to 5.5V
  • Fast Transient Recovery
  • Shutdown Disconnects Load from VIN and VBIAS
  • Low Operating Current: IIN = 4μA, IBIAS = 50μA Typ
  • Low Shutdown Current: IIN = 1μA, IBIAS = 0.01μA Typ
  • Output Current Limit
  • Thermal Overload Protection
  • Available in 6-Lead (2mm × 2mm) DFN Package

Typical Application

LTC3025-X
LTC3025-X
Back to Top

Description

The LTC3025-X is a micropower, VLDO (very low drop-out) linear regulator which operates from input voltages as low as 0.9V. The device is capable of supplying 500mA of output current with a typical dropout voltage of only 85mV. A BIAS supply is required to run the internal reference and LDO circuitry while output current comes directly from the IN supply for high efficiency regulation. The LTC3025-1 features an adjustable output with a low 0.4V reference while the LTC3025-2, LTC3025-3, and LTC3025-4 have fixed 1.2V, 1.5V and 1.8V output voltages respectively.

The LTC3025-X’s low quiescent current makes it an ideal choice for use in battery-powered systems. For 3-cell NiMH and single cell Li-Ion applications, the BIAS voltage can be supplied directly from the battery while the input can come from a high efficiency buck regulator, providing a high efficiency, low noise output.

Other features include high output voltage accuracy, excellent transient response, stability with ultralow ESR ceramic capacitors as small as 1μF short-circuit and , thermal overload protection and output current limiting. The LTC3025-X is available in a tiny, low profile (0.75mm) 6-lead DFN (2mm × 2mm) package.
Back to Top

Packaging

DFN-6

LTC3025-X
Back to Top

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3025EDC DFN 6 E $1.77 $1.18 View
LTC3025EDC#PBF DFN 6 E $1.77   View
LTC3025EDC#TR DFN 6 E $1.77 $1.24 View
LTC3025EDC#TRM DFN 6 E $1.77 $1.28 View
LTC3025EDC#TRMPBF DFN 6 E $1.77 $1.28 View
LTC3025EDC#TRPBF DFN 6 E $1.77 $1.24 View
LTC3025EDC-1 DFN 6 E $1.97   View
LTC3025EDC-1#PBF DFN 6 E $1.97   View
LTC3025EDC-1#TR DFN 6 E $1.97 $1.38 View
LTC3025EDC-1#TRM DFN 6 E $1.97 $1.43 View
LTC3025EDC-1#TRMPBF DFN 6 E $1.97 $1.43 View
LTC3025EDC-1#TRPBF DFN 6 E $1.97 $1.38 View
LTC3025EDC-2 DFN 6 E $1.97   View
LTC3025EDC-2#PBF DFN 6 E $1.97   View
LTC3025EDC-2#TR DFN 6 E $1.97 $1.38 View
LTC3025EDC-2#TRM DFN 6 E $1.97 $1.43 View
LTC3025EDC-2#TRMPBF DFN 6 E $1.97 $1.43 View
LTC3025EDC-2#TRPBF DFN 6 E $1.97 $1.38 View
LTC3025EDC-3#PBF DFN 6 E $1.97   View
LTC3025EDC-3#TRMPBF DFN 6 E $1.97 $1.43 View
LTC3025EDC-3#TRPBF DFN 6 E $1.97 $1.38 View
LTC3025EDC-4#PBF DFN 6 E $1.97   View
LTC3025EDC-4#TRMPBF DFN 6 E $1.97 $1.43 View
LTC3025EDC-4#TRPBF DFN 6 E $1.97 $1.38 View
LTC3025IDC#PBF DFN 6 I $1.94   View
LTC3025IDC#TRMPBF DFN 6 I $1.94 $1.41 View
LTC3025IDC#TRPBF DFN 6 I $1.94 $1.36 View
LTC3025IDC-1#PBF DFN 6 I $2.17   View
LTC3025IDC-1#TRMPBF DFN 6 I $2.17 $1.57 View
LTC3025IDC-1#TRPBF DFN 6 I $2.17 $1.52 View
LTC3025IDC-2#PBF DFN 6 I $2.17   View
LTC3025IDC-2#TRMPBF DFN 6 I $2.17 $1.57 View
LTC3025IDC-2#TRPBF DFN 6 I $2.17 $1.52 View
LTC3025IDC-3#PBF DFN 6 I $2.17   View
LTC3025IDC-3#TRMPBF DFN 6 I $2.17 $1.57 View
LTC3025IDC-3#TRPBF DFN 6 I $2.17 $1.52 View
LTC3025IDC-4#PBF DFN 6 I $2.17   View
LTC3025IDC-4#TRMPBF DFN 6 I $2.17 $1.57 View
LTC3025IDC-4#TRPBF DFN 6 I $2.17 $1.52 View
Buy Now
Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Back to Top

Applications

  • Low Power Handheld Devices
  • Low Voltage Logic Supplies
  • DSP Power Supplies
  • Cellular Phones
  • Portable Electronic Equipment
  • Handheld Medical Instruments
  • Post Regulator for Switching Supply Noise Rejection
Back to Top

Simulate

To simulate selected Linear Technology products, please download LTSpice / SwitcherCAD III. This powerful schematic capture and simulation tool includes macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

For other simulation tools, visit our Design Simulation and Device Models page.

Back to Top
LP2989 LP3878 MAX603 MAX604 MIC5209 MIC5219 TPS7963X