FN4855 Rev 3.00

Page 1 of 14

July 13, 2005

FN4855

Rev 3.00

July 13, 2005

HIP6004D

Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor

DATASHEET

The HIP6004D provides complete control and protection for

a DC-DC converter optimized for high-performance

microprocessor applications. It is designed to drive two

N-Channel MOSFETs in a synchronous-rectified buck

topology. The HIP6004D integrates all of the control, output

adjustment, monitoring and protection functions into a single

package.

The output voltage of the converter is easily adjusted and

precisely regulated. The HIP6004D includes a fully TTL-

compatible 5-input digital-to-analog converter (DAC) that

increments steps. The precision reference and voltage-

mode regulator hold the selected output voltage to within

1% over temperature and line voltage variations.

The HIP6004D provides simple, single feedback loop,

voltage-mode control with fast transient response. It includes

a 200kHz free-running triangle-wave oscillator that is

adjustable from below 50kHz to over 1MHz. The error

amplifier features a 15MHz gain-bandwidth product and

6V/

s slew rate which enables high converter bandwidth for

fast transient performance. The resulting PWM duty ratio

ranges from 0% to 100%.

The HIP6004D monitors the output voltage with a window

comparator that tracks the DAC output and issues a Power

Good signal when the output is within

10%. The HIP6004D

protects against over-current and overvoltage conditions by

inhibiting PWM operation. Additional built-in overvoltage

protection triggers an external SCR to crowbar the input

supply. The HIP6004D monitors the current by using the

a current sensing resistor.

Features

• Drives Two N-Channel MOSFETs

• Operates from +5V or +12V Input

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Ratio

• Excellent Output Voltage Regulation

-

1% Over Line Voltage and Temperature

• TTL-Compatible 5-Bit Digital-to-Analog Output

Voltage Selection

• Power-Good Output Voltage Monitor

• Over-Voltage and Over-Current Fault Monitors

- Does Not Require Extra Current Sensing Element,

• Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator Programmable from

50kHz to over 1MHz

• QFN Package:

- Compliant to JEDEC PUB95 MO-220

QFN - Quad Flat No Leads - Package Outline

- Near Chip Scale Package footprint, which improves

PCB efficiency and has a thinner profile

• Pb-Free plus anneal available (RoHS compliant)

Applications

• Power Supply for K7™, and Other Microprocessors

• High-Power DC-DC Regulators

• Low-Voltage Distributed Power Supplies

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

DWG. #

HIP6004DCB

0 to 70

20 Ld SOIC

M20.3

HIP6004DCBZ

(See Note)

0 to 70

20 Ld SOIC

(Pb-free)

M20.3

HIP6004DCR

0 to 70

20 Ld 5x5 QFN

L20.5x5

HIP6004DCRZ

(See Note)

0 to 70

20 Ld 5x5 QFN

(Pb-free)

L20.5x5

Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material

sets; molding compounds/die attach materials and 100% matte tin plate

termination finish, which are RoHS compliant and compatible with both SnPb

and Pb-free soldering operations. Intersil Pb-free products are MSL classified

at Pb-free peak reflow temperatures that meet or exceed the Pb-free

requirements of IPC/JEDEC J STD-020.

NOT RECOMMENDED FOR NEW DESIGNS

NO RECOMMENDED REPLACEMENT

contact our Technical Support Center at

1-888-INTERSIL or www.intersil.com/tsc