ADP151ACBZ-3.3-R7

Product Overview

The Analog Devices Inc. ADP151ACBZ-3.3-R7 is a surface-mount linear voltage regulator that provides a fixed 3.3 V positive output from one regulator channel. It delivers output currents up to 200 mA and accepts input voltages up to 5.5 V. The 4-WFBGA, WLCSP package, designated 4-WLCSP (0.76x0.76), supports compact board layouts. This device includes an enable control and protection features including over current, over temperature, and under voltage lockout. It operates over a -40°C to 125°C temperature range, with 20 µA quiescent current and 350 µA maximum supply current. The dropout voltage is 0.2 V at 200 mA, and power-supply rejection is 70 dB to 55 dB from 10 kHz to 100 kHz.

Key Features

• Fixed positive 3.3 V output with one regulator channel and 200 mA output current.
• Input voltage capability up to 5.5 V and 0.2 V dropout at 200 mA.
• Enable control with over current, over temperature, and under voltage lockout protection.
• 20 µA quiescent current and 350 µA maximum supply current.
• Power-supply rejection of 70 dB to 55 dB from 10 kHz to 100 kHz.
• Operating temperature range of -40°C to 125°C in a 4-WFBGA, WLCSP surface-mount package.

Applications

• A fixed 3.3 V rail for low-current sensor or interface circuitry in compact embedded assemblies.
• Battery-operated equipment where the enable control can gate the 3.3 V output independently of the input supply.
• Space-constrained board layouts that use the 4-WLCSP footprint and require a single positive fixed-output regulator.

Design & Procurement Notes

Design considerations include maintaining input voltage at or below 5.5 V while accounting for the 0.2 V dropout at 200 mA. The 3.3 V fixed output, enable control, and protection features can be used to define power-up sequencing and fault handling for a single regulator channel. Because the device is limited to 200 mA output current, load current and thermal margin should be evaluated within the -40°C to 125°C operating range. The 4-WLCSP (0.76x0.76) surface-mount package requires appropriate pad layout and inspection methods for small footprint placement. The 20 µA quiescent current and 350 µA maximum supply current should be considered in power budgeting; the 70 dB to 55 dB PSRR from 10 kHz to 100 kHz should be considered when input-side noise affects the regulated output.