UR6516BG-SH2-R [UTC]

2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR; 2A SINK及SOURCE可调线性总线端接


型号：	UR6516BG-SH2-R
厂家：	Unisonic Technologies
描述：	2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR 2A SINK及SOURCE可调线性总线端接
文件：	总6页 (文件大小：154K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

UR6516B

Preliminary

CMOS IC

2A SINK & SOURCE

ADJUSTABLE LINEAR BUS

TERMINATOR

DESCRIPTION

The UTC UR6516B is a low cost linear regulator providing a desired

output voltage or termination voltage for various applications by

converting voltage supplies ranging from 1V ~ 6.0V. The desired

output voltage could be programmable by two external voltage divider

resistors.

The UTC UR6516B can source or sink up to 2A of current while

regulating an output voltage to within 2% (DDR-I), 3% (DDR-II) or less.

The UTC UR6516B can be used in applications, such as PCI/AGP

graphics, game/play station, set top box, mother board.

FEATURES

* Ideal for DDR-I ,DDR-II

* Output Voltage could Drop Down to 0.6V

* Source and Sink up to 2A, Without an External Heat Sink

* Integrated Power MOSFETs

* Output Voltage Varies though Adjusting External Resistors

* I_CCQis Lower than 500uA at V_CCA

* Thermal Shutdown Protection, Current Limit Protection, and Short

Circuit Protection Circuits Included

* Shutdown for Standby or Suspend Mode Operation

* Requiring Minimum External Components

ORDERING INFORMATION

Ordering Number

UR6516BG-SH2-R

Package

HSOP-8

Packing

Tape Reel

www.unisonic.com.tw

1 of 6

QW-R502-449.a

UR6516B

Preliminary

CMOS IC

PIN CONFIGURATION

PIN DESCRIPTION

PIN NO

PIN NAME

V_IN

DESCRIPTION

Input Power

Ground

2,7,8

GND

No Connection

Output Voltage

V_OUT

REFEN

V_CCA

Reference Voltage Input and Chip Enable

Voltage Supply for Internal Circuits

UNISONIC TECHNOLOGIES CO., LTD

2 of 6

QW-R502-449.a

www.unisonic.com.tw

UR6516B

Preliminary

CMOS IC

BLOCK DIAGRAM

V_CCA

V_IN

Current Limit

Protection

Thermal

REFEN

V_OUT

GND

UNISONIC TECHNOLOGIES CO., LTD

3 of 6

QW-R502-449.a

www.unisonic.com.tw

UR6516B

Preliminary

CMOS IC

ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

V_IN, V_CCA

RATINGS

UNIT

V_IN, V_CCA

Output RMS Current, Source or Sink

Storage Temperature

T_STG

-65~125

°C

Notes: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

OPERRATING RATING

PARAMETER

SYMBOL

V_IN

TEST CONDITIONS

MIN

TYP

MAX UNIT

Input Power

2.5/1.8/1.5

Output Voltage

V_OUT

V_CCA-1.9

Reference Voltage Input and Chip Enable

Voltage Supply for Internal Circuits

REFEN

V_CCA

THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

°C/W

Junction to Case

θ_JC

ELECTRICAL CHARACTERISTICS

(T_A=25°C; V_IN=+2.5V and V_CCA=+3.3V, V_REFEN=1.25V, unless otherwise specified) (Note 1)

PARAMETER

SYMBOL

V_OS

TEST CONDITIONS

I_OUT=0A

MIN

-20

TYP MAX UNIT

Output Offset Voltage (Note 2)

Operating Current at V_IN

I_OP

No load, Cout=200uF

I_L: 0A -> 2A

0.8/1.2 2/3

｜ΔV_LOAD

｜

Load Regulation (DDR I/II)

Dropout Voltage

I_L: 0A -> -2A

V_CCA>V_OUT+1.9V, I_OUT=2A

V_CCA>V_OUT+1.9V, I_OUT=1.5A

At Room Temp.

0.3

0.2

0.4

0.25

230

110

V_DROPOUT

Quiescent Current at V_CCA

Current in Shutdown Mode

Input Voltage Range (Note 3)

Short Circuit Protection

Current Limit

I_CCQ

I_SHDN

V_IN

190

µA

V_REFEN<0.2V, R_L= 10 Ohm

No Load

2.5/1.8

3.3

V_CCA

R_L= 10 Ohm

3.15

I_LIMIT

Short Current

I_SC,V_IN

I_SC,G_ND

Sinking

Short Current

Sourcing

Over Thermal Protection

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

REFEN Function

THSD

3.15V<=VCCA<=6V

125

150

155

°C

_REFEN< V_IN

REFEN Threshold

0.4

0.5

0.6

V_REFEN< VCCA – 1.9V

Notes: 1. Maximum ratings are stress ratings only and functional device operation is not implied.

Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions

2. V_OS= V_REFEN– V_OUT

3. Keep V_CCA>= V_INand V_CCA>= V_REFEN+ 1.9V on operation power on and power off sequences

4. Guaranteed by design, not 100% test

UNISONIC TECHNOLOGIES CO., LTD

4 of 6

QW-R502-449.a

www.unisonic.com.tw

UR6516B

Preliminary

CMOS IC

FUNCTIONAL DESCRIPTION

The UTC UR6516B is a low cost linear regulator, which can sink and source 2A of current without an external heat

sink.

The UTC UR6516B incorporates power MOSFETs that are capable of sourcing and sinking 2A of current while

keeping perfect voltage regulation. By using the external feedback, the output voltage can be regulated within 3% or

less. Separate voltage supply inputs have been added to fit applications with various power supplies for the databus

and power buses.

OUTPUTS

The VOUT pins (output voltage pins) are connected to the databus, address, or clock lines via an external inductor.

The output voltage varies depending on the input voltage.

INPUTS

The output voltage is determined by the input voltage. The desired output voltage could be programmable by two

external voltage divider resistors.

The VIN pin is suggested to connect to VDDQ of memory module for better tracking with memory VDDQ.

OTHER SUPPLY VOLTAGES

VCCA provide the voltage supply to the logic section and internal error amplifiers of UTC UR6516B.

UNISONIC TECHNOLOGIES CO., LTD

5 of 6

QW-R502-449.a

www.unisonic.com.tw

UR6516B

Preliminary

CMOS IC

TYPICAL APPLICATION CIRCUIT

V_IN

GND

4.7µF

CEin

200µF

100K

GND

V_CCA

V_OUT

104

V_OUT

REFEN

4.7µF

CEout

200µF

100K

104

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

UNISONIC TECHNOLOGIES CO., LTD

6 of 6

QW-R502-449.a

www.unisonic.com.tw

相关型号：