RT9173ACS 데이터 시트보기 (PDF) - Richtek Technology
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RT9173ACS Datasheet PDF : 10 Pages
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RT9173/A
Pin Description
Pin Name
VIN
GND
VCNTL
REFEN
VOUT
Pin Function
Power Input
Ground
Gate Drive Voltage
Reference Voltage Input and Chip Enable
Output Voltage
Absolute Maximum Ratings
z Input Voltage
7V
z Power Dissipation
Internally Limited
z ESD Rating
2KV
z Storage Temperature Range
-65°C to 150°C
z Lead Temperature (Soldering, 5 sec.)
260°C
z Package Thermal Resistance
TO-263,θJC
7.7°C/W
TO-263,θJA
19.4°C/W
SOP-8, θJC
SOP-8, θJA Note
15.7°C/W
45°C/W
Note: θJA is measured with the component mounted on an evaluation PC board in free air that the required area of
copper is 300mm2 or larger.
Electrical Characteristics
(Limits in standard typeface are for TA = 25°C, unless otherwise specified:
VIN = 2.5V, VCNTL = 3.3V, VREFEN = 1.25V, COUT = 10µF (Ceramic))
Parameter
Symbol
Test Conditions
Output Offset Voltage
Load Regulation
Input Voltage Range
(DDR 1)
Current In Shutdown Mode
Short Circuit Protection
VOS
∆VLOAD
VIN
VCNTL
ISHDN
Fig.1
IL : 0 → 1.5A, Fig.1
IL : 0A → -1.5A
Keep VCNTL ≥ VIN on operation
power on and power off sequences
VREFEN < 0.2V, RL = 180Ω, Fig.2
Current limit
RT9173
RT9173A ILIMIT
Fig.3,4
Fig.3,4
Over Temperature Protection
Thermal Shutdown Temperature TSD
Thermal Shutdown Hysteresis
3.3V ≤ VCNTL ≤ 5V
Guaranteed by design
Shutdown Function
Shutdown Threshold Trigger
Output = High, Fig.5
Output = Low, Fig.5
Min Typ Max Units
-20
0
20 mV
--
0.8
2
%
--
0.8
2
1.8 2.5 --
V
--
3.3
6
--
50 90 µA
2.1
--
--
A
3.0
--
--
125 150 -- °C
--
50
-- °C
0.8
--
--
V
--
-- 0.2
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2
DS9173/A-06 March 2002
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