12μV_RMS Low Noise 500mA LDO Linear Regulator

 

Part Number	Replacement	Explanation

Description

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The MAX38902A/B/C/D are low-noise, linear regulators that deliver up to 500mA of output current with only 12μV_RMS of output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-tooutput headroom at full load. The 365μA no-load supply current is independent of drop-out voltage.

The MAX38902A have nine, pin-selectable output voltages 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX38902B/C have a resistor adjustable output voltage in the range of 0.6V to 5.3V. The MAX38902B also includes an active-low POK output.

The MAX38902D have factory-preset output voltages ranging from 0.7V to 5V. All versions include a programmable output soft-start rate, output over-current and thermal overload protection.

The MAX38902A/B are offered in an 8-pin TDFN package, while the MAX38902C/D are offered in a 2 x 3, 0.4mm wafer-level package (WLP).

Design Solution: Modern Portable Devices Require a New Breed of LDOs ›

MAX38902A, MAX38902B, MAX38902C, MAX38902D: Typical Operating Circuits Enlarge+

Key Features

• 1.7V to 5.5V Input Voltage Range
• 0.6V to 5.3V Output Voltage Range
• 12μV_RMS Output Noise, 10Hz to 100kHz
• 365µA Operating Supply Current
• 70dB PSRR at 10kHz
• 500mA Maximum Output Current
• ±1% DC Accuracy Over Load, Line, and Temperature
• 100mV (Max) Dropout at 500mA Load (3.6V_IN)
• < 0.1µA Shutdown Supply Current
• Stable with 2µF (Min) Output Capacitance
• Programmable Soft-Start Rate
• Overcurrent and Overtemperature Protection
• Output-to-Input Reversed Current Protection
• Active-Low POK Output
• Pin-to-Pin Compatible with MAX8902 (TDFN)
• 1.22mm x 0.82mm, 2 x 3 Bump, 0.4mm Pitch WLP, or 2mm x 2mm 8-pin TDFN Package

Applications/Uses

• Audio Systems
• Communication Circuitry
• High-Resolution Data Acquisition Systems