UR5515 Datasheet, PDF (3/8 Pages) Unisonic Technologies – 1.5A/3A BUS TERMINATION REGULATOR

UR5515
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
V_IN
7
V
Power Dissipation
Junction Temperature
Storage Temperature Range
P_D
Internally Limited
W
T_J
125
Â¥
T_STG
-40 ~ 150
Â¥
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 0Ċ~70Ċ
operating temperature range
and assured by design from –20Ċ~85Ċ.
ELECTRICAL CHARACTERISTICS
(Ta = 25¥, unless otherwise specified: V_IN = 2.5V, V_CNTL= 3.3V, V_REF = 1.25V, C_OUT=10µF(Ceramic).)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX
Input Voltage Range(Note 1)
V_IN
V_CNTL
No Load,(Note 2)
DDR-I _{1.6 2.5}
DDR-II
1.8
DDR-I
3.3 6
DDR-II
3.3 6
Output Offset Voltage
Operating Current of V_CNTL
V_OS I_OUT=0A, Fig. 1 (Note 3)
I_CNTL No Load
-20 0 20
6.5 10
Load Regulation
I_L: 0~1.5A, Fig. 1
|¶V_LOAD|
I_L: 0~-1.5A, Fig. 1
DDR-I
DDR-II
DDR-I
DDR-II
0.8 2
1.2 3
0.8 2
1.2 3
Current In Shutdown Mode
Short Circuit Protection
I_SHDN V_REF<0.2V, R_L=180Ω, Fig. 2
50 90
UR5515
Fig 3, 4
2.1
Current Limit
UR5515A
I_{LIMIT Fig 3, 4}
3.0
Over Temperature Protection
Thermal Shutdown Temperature
T_SD 3.3V≤V_CNTL≤5V
125 150
Thermal Shutdown Hysteresis
50
Shutdown Function
Shutdown Threshold Voltage
V_THD Fig 5
0.2
0.8
Note 1. For safely operate your system, the 3.3V rail have to be tied to V_CNTL rather than 5V rail
2. Keep V_CNTL≥V_IN on operation power on and power off sequences.
3. V_OS offset is the voltage measurement defined as V_OUT subtracted from V_REF.
UNIT
V
mV
mA
%
µA
A
Â¥
Â¥
V
THERMAL DATA
PARAMETER
Thermal Resistance Junction-Case

SOP-8
TO-252-5
TO-263-5
SYMBOL
ǀ_JC
RATINGS
35
8
4
UNIT
Ċ/W


UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-056,A