ADP2443 - ADI

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

Part No

ADP2443
Manufacturer

ADI
ChipWorker Part#

CW983384085
Description

3A, 36V, Synchronous Step-Down DC-to-DC Regulator
Documentation

Datasheet

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ADP2443 Specifications

Attribute	Attribute Value

Part Number	ADP2443
Manufacturer	ADI
ChipWorker Part#	CW983384085
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The ADP2443 is synchronous step-down, dc-to-dc regulator with an integrated 98 mΩ, high-side power metal oxide semicon-ductor field effect transistor (MOSFET) and a 35 mΩ, synchronous rectifier MOSFET to provide a high efficiency solution in a compact 4 mm × 4 mm LFCSP package. The regulators operate from an input voltage range of 4.5 V to 36 V. The output voltage can be adjusted down to 0.6 V and deliver up to 3 A of continuous current. The fast 50 ns minimum on time allows the regulators convert high input voltage to low output voltage at high frequency.
The ADP2443 uses an emulated current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The switching frequency of the ADP2443 can be programmed from 200 kHz to 1.8 MHz. The synchronization function allows the switching frequency be syn-chronized with an external clock to minimize the system noise.
The ADP2443 targets high performance applications that require high efficiency and design flexibility. External compensation and an adjustable soft start function provide design flexibility. The power-good output and precision enable input provide simple and reliable power sequencing.
Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP), and thermal shutdown (TSD).
The ADP2443 operates over the −40°C to +125°C operating junction temperature range and is available in a 24-lead, 4 mm × 4 mm LFCSP package.
Applications
Intermediate power rail conversion
Multicell battery powered systems
Process control and industrial automation
Healthcare and medical
Networking and servers
### Features and Benefits
Continuous output current: 3 A
Input voltage: 4.5 V to 36 V
Integrated MOSFETs: 98 mΩ/35 mΩ
Reference voltage: 0.6 V ± 1%
Fast minimum on time: 50 ns
Programmable switching frequency: 200 kHz to 1.8 MHz
Synchronizes to external clock: 200 kHz to 1.8 MHz
Precision enable and power good
Cycle-by-cycle current limit with hiccup protection
External compensation
Programmable soft start time
Startup into a precharged output
Supported by ADIsimPower design tool

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