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RT9173BPS Datasheet(PDF) 5 Page - Richtek Technology Corporation

Part # RT9173BPS
Description  2A Bus Termination Regulator
Download  13 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9173BPS Datasheet(HTML) 5 Page - Richtek Technology Corporation

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RT9173B
5
DS9173B-09 March 2007
www.richtek.com
Electrical Characteristics
(VIN = 2.5V, VCNTL = 3.3V, VREFEN = 1.25V, COUT = 10
μF (Ceramic), TA = 25°C unless otherwise specified)
Absolute Maximum Ratings (Note 1)
Input Voltage ------------------------------------------------------------------------------------------------------------ 7V
Power Dissipation, PD @ TA = 25
°C
SOP-8 -------------------------------------------------------------------------------------------------------------------- 0.625W
TO-252 ------------------------------------------------------------------------------------------------------------------- 1.471W
Package Thermal Resistance (Note 5)
SOP-8,
θJA -------------------------------------------------------------------------------------------------------------- 160°C/W
SOP-8,
θJC -------------------------------------------------------------------------------------------------------------- 23°C/W
TO-252,
θJA ------------------------------------------------------------------------------------------------------------- 68°C/W
TO-252,
θJC ------------------------------------------------------------------------------------------------------------- 8°C/W
Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260
°C
Junction Temperature ------------------------------------------------------------------------------------------------ 150
°C
Storage Temperature Range ---------------------------------------------------------------------------------------- –65
°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions
(Note 3)
Junction Temperature Range ---------------------------------------------------------------------------------------- –40°C to 125°C
Parameter
Symbol
Test Conditions
Min
Typ
Max Units
Output Offset Voltage
VOS
IOUT = 0A, Figure 1 (Note 4)
−20
0
20
mV
IL : 0A → 2A, Figure 1
Load Regulation
ΔVLOAD
IL : 0A → -2A
−20
0
20
mV
VIN
1.7
2.5/1.8
--
Input Voltage Range (DDR I/II)
VCNTL
Keep VCNTL ≥ VIN on operation power
on and power off sequences
3
3.3/5
6
V
Operating Current of VCNTL
ICNTL
No Load
--
1
2.5
mA
Current In Shutdown Mode
ISHDN
VREFEN < 0.2V, RL = 180Ω, Figure 2
--
50
90
μA
Short Circuit Protection
Current limit
ILIM
Figure 3,4
2.2
2.6
--
A
Over Temperature Protection
Thermal Shutdown Temperature TSD
3.3V
≤ VCNTL ≤ 5V
125
170
--
°C
Thermal Shutdown Hysteresis
ΔTSD
3.3V
≤ VCNTL ≤ 5V
--
35
--
°C
Shutdown Function
Output = High, Figure 5
0.6
--
--
Shutdown Threshold Trigger
Output = Low, Figure 5
--
--
0.2
V


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