ADP1829 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADP1829
Manufacturer

ADI
ChipWorker Part#

CW389415834
Description

Dual, Interleaved, Step-Down DC-to-DC Controller with Tracking
Documentation

Datasheet

ADP1829 Global Supplier

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ADP1829 Specifications

Attribute	Attribute Value

Part Number	ADP1829
Manufacturer	ADI
ChipWorker Part#	CW389415834
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The ADP1829 is a versatile, dual, interleaved, synchronous PWM buck controller that generates two independent output rails from an input of 3.0 V to 20 V, with power input voltage ranging from 1.0 V to 24 V. Each controller can be configured to provide output voltages from 0.6 V to 85% of the input voltage and is sized to handle large MOSFETs for point-of-load regulators. The two channels operate 180° out of phase, reducing stress on the input capacitor and allowing smaller, low cost components. The ADP1829 is ideal for a wide range of high power applications, such as DSP and processor core I/O power, and general-purpose power in telecommunications, medical imaging, PC, gaming, and industrial applications.
The ADP1829 operates at a pin-selectable, fixed switching frequency of either 300 kHz or 600 kHz, minimizing external component size and cost. For noise-sensitive applications, it can also be synchronized to an external clock to achieve switching frequencies between 300 kHz and 1 MHz. The ADP1829 includes soft start protection to prevent inrush current from the input supply during startup, reverse current protection during soft start for precharged outputs, as well as a unique adjustable lossless current-limit scheme utilizing external MOSFET sensing.
For applications requiring power supply sequencing, the ADP1829 also provides tracking inputs that allow the output voltages to track during startup, shutdown, and faults. This feature can also be used to implement DDR memory bus termination.
The ADP1829 is specified over the −40°C to +125°C junction temperature range and is available in a 32-lead LFCSP package.
Applications
Telecommunications and networking systems
Medical imaging systems
Base station power
Set-top boxes
Printers
DDR termination
### Features and Benefits
Fixed frequency operation: 300 kHz, 600 kHz, or synchronized operation up to 1 MHz
Supply input range: 3.0 V to 20V
Wide power stage input range: 1 V to 24 V
Interleaved operation results in smaller, low cost input capacitor
All-N-channel MOSFET design for low cost
±0.85% accuracy at 0°C to 70°C
Soft start, thermal overload, current-limit protection
10 µA shutdown supply current
Internal linear regulator
Lossless RDSON current-limit sensing
Reverse current protection during soft start for handling precharged outputs
Independent Power OK outputs
Voltage tracking for sequencing or DDR termination
Available in 5 mm × 5 mm, 32-lead LFCSP

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