LTC3025-1/LTC3025-2/LTC3025-3/LTC3025-4 500mA Micropower VLDO Linear Regulators
2021-12-15
The LTC®3025-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 volt-ages 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.
●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: 80μV-RMS (10Hz to 100kHz)
■BIAS Voltage Range: 2.5V to 5.5V
■Fast Transient Recovery
■Shutdown Disconnects Load from V-IN and V-BIAS
■Low Operating Current: I-IN = 4μA, I-BIAS = 50μA Typ
■Low Shutdown Current: I-IN = 1μA, I-BIAS = 0.01μA Typ
■Output Current Limit
■Thermal Overload Protection
■Available in 6-Lead (2mm × 2mm) DFN Package
■AEC-Q100 Qualification in Progress
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.
●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: 80μV-RMS (10Hz to 100kHz)
■BIAS Voltage Range: 2.5V to 5.5V
■Fast Transient Recovery
■Shutdown Disconnects Load from V-IN and V-BIAS
■Low Operating Current: I-IN = 4μA, I-BIAS = 50μA Typ
■Low Shutdown Current: I-IN = 1μA, I-BIAS = 0.01μA Typ
■Output Current Limit
■Thermal Overload Protection
■Available in 6-Lead (2mm × 2mm) DFN Package
■AEC-Q100 Qualification in Progress
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