UR5515-S08-R datasheet(3/8 Pages) ETL

3 / 8 page

UR5515

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 8

www.unisonic.com.tw

QW-R502-056,A



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

VIN

Power Dissipation

Internally Limited

Junction Temperature

125

℃

Storage Temperature Range

TSTG

-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℃.



ELECTRICAL CHARACTERISTICS

(Ta = 25℃, unless otherwise specified: VIN = 2.5V, VCNTL= 3.3V, VREF = 1.25V, COUT=10μF(Ceramic).)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

Input Voltage Range(Note 1)

VIN

No Load,(Note 2)

DDR-I

1.6

2.5

DDR-II

1.8

VCNTL

DDR-I

3.3

DDR-II

3.3

Output Offset Voltage

VOS

IOUT=0A, Fig. 1 (Note 3)

-20

Operating Current of VCNTL

ICNTL

No Load

6.5

Load Regulation

|△VLOAD|

IL: 0~1.5A, Fig. 1

DDR-I

0.8

DDR-II

1.2

IL: 0~-1.5A, Fig. 1

DDR-I

0.8

DDR-II

1.2

Current In Shutdown Mode

ISHDN

VREF<0.2V, RL=180Ω, Fig. 2

μA

Short Circuit Protection

Current Limit

UR5515

ILIMIT

Fig 3, 4

2.1

UR5515A

Fig 3, 4

3.0

Over Temperature Protection

Thermal Shutdown Temperature

TSD

3.3V≤VCNTL≤5V

125

150

℃

Thermal Shutdown Hysteresis

℃

Shutdown Function

Shutdown Threshold Voltage

VTHD

Fig 5

0.2

0.8

Note 1. For safely operate your system, the 3.3V rail have to be tied to VCNTL rather than 5V rail

2. Keep VCNTL≥VIN on operation power on and power off sequences.

3. VOS offset is the voltage measurement defined as VOUT subtracted from VREF.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Thermal Resistance Junction-Case

SOP-8

θJC

℃

TO-252-5

TO-263-5

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