ADP3152 Datasheet PDF | Analog Devices

Analog Devices ADP3152

The ADP3152 is a highly efficient synchronous switching regulator controller optimized for Pentium II Processor applications where 5 V is stepped down to a digitally controlled output voltage between 1.8 V and 3.5 V. The ADP3152 drives two N-channel MOSFETS in a synchronous rectified buck converter, at a maximum switching frequency of 250 kHz. Using a 5-bit DAC to read a voltage identification (VID) code directly from the processor, the ADP3152 uses a current mode constant off-time architecture to generate its precise output voltage.

Part No.	ADP3152
Datasheet	ADP3152 Download
Manufacturer	Analog Devices
Description	5-Bit Programmable Synchronous Switching Regulator Controller
Buy	Stock & Price

FEATURES

5-Bit Digitally Programmable 1.8 V to 3.5 V Output Voltage Dual N-Channel Synchronous Driver Total Output Accuracy ؎ 1% (0؇C to 70 ؇C) High Efficiency Current-Mode Operation Short Circuit Protection Power Good Output Integrated Overvoltage Protection Crowbar 16-Lead SOIC Package VRM 8.2 Compatible

APPLICATIONS

Desktop PC Power Supply for: Pentium II Processor Pentium Pro Processor Pentium Processor AMD–K6 Processor VRM Modules VCC +12V 22●F 1●F VCC R1 SD CMP R2 CCOMP 150pF AGND SENSE+ CT DRIVE1 5-Bit Programmable Synchronous Switching Regulator Controller for Pentium® II Processor ADP3152

GENERAL DESCRIPTION

Using the recommended loop compensation and guidelines, the ADP3152 provides a dc/dc converter that meets Intel’s stringent transient specifications with a minimum number of output capacitors and smallest footprint. Additionally, the current mode architecture also provides guaranteed short circuit protection and adjustable current limiting. VIN +5V + CIN ADP3152 IRL3103 L 2.5●H RSENSE 6.7m⍀ + CO VO 1.8V–3.5V 14A 1nF SENSE– DRIVE2 IRL3103 PGND VID0–VID4 10BQ015 5-BIT CODE Figure 1.