LTC3025-1LTC3025-2LTC3025-3LTC3025-4 Series

500mA Micropower VLDO Linear Regulators

Catalog

500mA Micropower VLDO Linear Regulators

Part	Output Configuration	Number of Regulators	Voltage Dropout (Max) [Max]	Voltage - Output (Min/Fixed)	Supplier Device Package	Package / Case	Current - Output	Control Features	Voltage - Input (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Protection Features	Output Type	Current - Quiescent (Iq)	Output Type	Voltage - Output (Max) [Max]
Analog Devices LTC3025IDC-2#TRM	Positive	1	0.17 V	1.2 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit	1.81 mOhm	10 µA
Analog Devices LTC3025EDC-3#TRMPBF	Positive	1	0.185 V	1.5 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit	1.81 mOhm	80 µA
Analog Devices LTC3025EDC-4#TRM	Positive	1	0.185 V	1.8 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit	1.81 mOhm	10 µA
Analog Devices LTC3025IDC-3#TRMPBF	Positive	1	0.185 V	1.5 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit	1.81 mOhm	80 µA
Analog Devices LTC3025EDC-1#TRPBF	Positive	1	0.17 V	0.4 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit		80 µA	Adjustable	3.6 V
Analog Devices LTC3025EDC#TRM		1			6-DFN (2x2)	6-WFDFN Exposed Pad	300 mA			125 °C	-40 °C	Surface Mount
Analog Devices LTC3025EDC-4#TRPBF	Positive	1	0.185 V	1.8 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit	1.81 mOhm	80 µA
Analog Devices LTC3025EDC#TRPBF	Positive	1	0.1 V	0.4 V	6-DFN (2x2)	6-WFDFN Exposed Pad	300 mA	Enable Power Sequencing	5.5 V	125 °C	-40 °C	Surface Mount	Over Temperature Short Circuit Soft Start			Adjustable	3.6 V
Analog Devices LTC3025IDC-2#TRMPBF	Positive	1	0.17 V	1.2 V	6-DFN (2x2)	6-WFDFN Exposed Pad	500 mA	Enable	5.5 V	125 °C	-40 °C	Surface Mount	Over Current Over Temperature Short Circuit	1.81 mOhm	80 µA
Analog Devices LTC3025IDC#TRPBF	Positive	1	0.1 V	0.4 V	6-DFN (2x2)	6-WFDFN Exposed Pad	300 mA	Enable Power Sequencing	5.5 V	125 °C	-40 °C	Surface Mount	Over Temperature Short Circuit Soft Start			Adjustable	3.6 V

Catalog

500mA Micropower VLDO Linear Regulators

Key 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 VINand 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

• AEC-Q100 Qualified for Automotive Applications

Description

The LTC3025 is a micropower, VLDO™(very low dropout) linear regulator which operates from input voltages as low as 0.9V. The device is capable of supplying 300mA of output current with a typical dropout voltage of only 45mV. 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 low 0.4V internal reference voltage allows the LTC3025 output to be programmed to much lower voltages than available in common LDOs (range of 0.4V to 3.6V). The output voltage is programmed via two ultrasmall SMD resistors.The LTC3025’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 is available in a tiny, low profile (0.75mm) 6-lead DFN (2mm × 2mm) package.Output CurrentOutput VoltageLTC3025300mAAdj (0.4V to 3.6V)LTC3025-1500mAAdj (0.4V to 3.6V)LTC3025-2500mA1.2V FixedLTC3025-3500mA1.5V FixedLTC3025-4500mA1.8V FixedAPPLICATIONSLow Power Handheld DevicesLow Voltage Logic SuppliesDSP Power SuppliesCellular PhonesPortable Electronic EquipmentHandheld Medical InstrumentsPost Regulator for Switching Supply Noise Rejection