Analog Devices Inc. LT3072 LDO Linear Regulators

Analog Devices Inc. LT3072 Low Dropout (LDO) Linear Regulators are dual channel regulators with 2.5A per channel that offers low voltage and UltraFast™ transient response. The LT3072 regulators incorporate a unique tracking feature (V_IOC) to control the upstream buck regulators that power the inputs. Features include internal protection features such as Undervoltage Lockout (UVLO), Overvoltage Lockout (OVLO), reverse-current protection, current limiting, and thermal shutdown. These LDO linear regulators are available in a low profile (0.75mm) 36-lead 4mm x 7mm QFN package. The LT3072 linear regulators provide independent digitally selectable output voltages with 50mV increments from 0.6V to 1.2V and in 100mV increments from 1.2V to 2.5V. These linear regulators are ideal for high performance FPGAs, microprocessors, and sensitive RF communication supply applications.

Features

Dual and independent 2.5A outputs
80mV dropout voltage
12µV_RMS (10Hz to 100kHz) low output noise
0.6V to 2.5V digitally programmable V_OUT
Output tolerance:
- ±1.25%/±1.5% overload, line, and temperature
±10% range analog output margining
Parallel multiple devices for higher current
±7% programmable precision current limit
I_MON = I_OUT/3000 output current monitor

30dB @ 1MHz high frequency PSRR
Stable with ceramic output capacitors (10µF minimum)
V_IOC pin controls buck converter to maintain low power dissipation and optimize efficiency
PowerGood (PWRGD) / Undervoltage Lockout (UVLO) flags
Current limit and thermal shutdown protection
Temperature monitor
36-Lead 4mm x 7mm QFN package

Applications

FPGA, Digital Signal Processor (DSP), and microprocessor power supplies
Low noise RF power supplies

High-speed servers and storage devices
Post buck regulation and supply isolation

Analog Devices Inc. LT3072 LDO Linear Regulators

Features

Applications

Application Block Diagram

Dropout Voltage vs Load Current Characteristics

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