RT9173 RICHTEK [Richtek Technology Corporation], RT9173 Datasheet - Page 3

• Manufacturer Part Number: RT9173
• Description: 1.5A/3A Bus Termination Regulator
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Typical Application Circuit
Test Circuit
DS9173/A-06 March 2002
R
C
R
C
1
OUT
DUMMY
SS
= R
= 1µF, C
,
min
1.25V
2
= 100KΩ, R
0.2V
V
EN
V
= 1kΩ as for VOUT discharge when VIN is not present but VCNTL is present
2N7002
= 10µF (Ceramic) + 1000µF under the worst case testing condition
IN
CNTL
= 2.5V
1.25V
IN
2.5V
= 3.3V
= 470µF (Low ESR), C
Fig.2 Current in Shutdown Mode, I
TT
Fig.1 Output Voltage Tolerance, ∆V
REFEN RT9173/A VOUT
REFEN RT9173/A
A
= 50Ω / 33Ω / 25Ω
R
R
2
1
VIN
VIN
2.5V
C
GND
REFEN
SS
GND
VIN
RT9173/A
VCNTL
CNTL
VCNTL
GND
3.3V
3.3V
VOUT
VCNTL
= 47µF
VOUT
R
L
I
L
SHCLN
V
OUT
OUT
V
C
C
C
OUT
C
OUT
CNTL
OUT
C
OUT
IN
V
V
1.25V
0V
R
Time delay
R
L
DUMMY
and C
R
OUT
TT
RT9173/A
www.richtek-ic.com.tw
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