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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 32LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：3V ~ 20V
- Frequency - Switching：300kHz, 600kHz
- Duty Cycle (Max)：93%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad, CSP
- Supplier Device Package：32-LFCSP-WQ (5x5)
- Grade：-
- Qualification：-
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Overview
The ADP1829ACPZ-R7 is a dual-output, interleaved, synchronous PWM buck controller from Analog Devices. It generates two independent output rails from an input voltage range of 3V to 20V. Each channel provides an output voltage configurable from 0.6V to 85% of the input voltage. The device operates with switching frequencies of 300kHz or 600kHz and supports a maximum duty cycle of 93%. The two channels run 180 degrees out of phase to reduce input capacitor current stress. It is housed in a 32-pin LFCSP EP package.
Feature Summary
- Dual interleaved synchronous PWM buck control architecture
- Wide input voltage operation from 3V to 20V
- Configurable output voltage down to 0.6V per channel
- 180-degree phase shift for reduced input ripple
Applications
- Multi-rail server power distribution systems
- Telecommunications infrastructure power supplies
- Industrial equipment requiring dual step-down conversion
- Networking hardware with separate logic and memory rails
Procurement Notes
Verify the specific suffix 'ACPZ-R7' matches the required 32-pin LFCSP EP tape-and-reel packaging configuration. Confirm that the 3V-20V input range aligns with the system's supply capabilities. Ensure the 600kHz switching frequency option is selected if lower external component values are required for the design.
Selection Notes
Select this controller when dual isolated outputs are needed from a single high-voltage rail. The interleaved topology is ideal for minimizing input capacitance requirements compared to single-phase designs. Consider the 32-pin LFCSP package size constraints and thermal dissipation needs for the application environment before finalizing the component choice.
Part Context
This part belongs to the ADP1829 family of dual-output DC-to-DC controllers. It is designed for applications requiring efficient power conversion with reduced component count. The interleaved operation distinguishes it from standard single-channel buck controllers by providing inherent ripple cancellation at the input node.
Replacement Considerations
Direct pin-compatible replacements within the same manufacturer family should be verified against the official cross-reference list. Ensure any substitute maintains the 32-pin LFCSP EP footprint and supports the 3V-20V input range. Check for identical interleaved functionality if input ripple reduction is critical.
