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UR533, UR533 T/R, UR5515

Table of contents:
Info of UR533
Info of UR533 T/R
Info of UR5515

UR533, UR533 T/R, UR5515 Selling Leads, Datasheet

MFG:UTC Package Cooled:TO-252-5 D/C:08.09+

UR533, UR533 T/R, UR5515 Datasheet download

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Part Number: UR533

MFG: UTC

Package Cooled: TO-252-5

D/C: 08.09+

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UR533 General Description

The UTC UR533 is ultra-low dropout regulators with 5A output current capability. This device has been optimized for low voltage applications including VTT bus termination, where transient response and minimum input voltage is critical. The UTC UR533 is ideal for low voltage microprocessor applications requiring a regulated output from 1.3V ~ 5.7V with a power input supply of 1.75V ~ 6.5V.

Current limit ensures controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperatures.

UR533 Maximum Ratings

PARAMETER	SYMBOL	RATINGS	UNIT
Input Voltage	V_IN	7	V
Control Voltage	V_CNTL	13.2	V
Operating Junction Temperature	T_OPR	0 ~ +125
Storage Temperature	T_STG	-65 ~ +150

Note 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.

UR533 Features

· Ultra Low dropout voltage
· Remote sense operation
· Fast transient response
· Load regulation: 0.05% typical
· 0.5% initial accuracy
· On-chip thermal limiting

UR5515 General Description

The UTC UR5515 is a linear bus termination regulator and designed to convert voltage supplies ranging from 1.6V~6.0V into a desired output voltage, which adjusted by two external voltage divider resistors. The device can both source and sink up to 1.5A/3A of current while regulating an output voltage to within 2% (DDR-I) and 3% (DDR-II) or less.

The UTC UR5515 is capable of use in conjunction with series termination resistors to provide an excellent voltage source for active termination schemes of high speed transmission lines as those seen in high speed memory buses and distributed backplane designs.

The voltage output of the regulator can be used as a termination voltage for DDR SDRAM.

UR5515 Maximum Ratings

PARAMETER	SYMBOL	RATINGS	UNIT
Input Voltage	V_IN	7	V
Power Dissipation	P_D	Internally Limited	W
Junction Temperature	T_J	125
Storage Temperature Range	T_STG	-40 ~ 150

Note:1.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. 2.The device is guaranteed to meet performance specification within 0~70 operating temperature range
and assured by design from 20~85.

UR5515 Features

·Support Both DDR-I (1.25 V_TT) and DDR-II (0.9 V_TT) Requirements
·Capable of Sourcing and Sinking Current 1.5A/3A
·Current-limiting Protection and Thermal Shutdown Protection
·Integrated Power MOSFETs
·Generates Termination Voltages for SSTL-2
·High Accuracy Output Voltage at Full-Load
·Adjustable output voltage by External Resistors
·Minimum External Components
·Shutdown for Standby or Suspend Mode Operation with High-impedance Output.

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