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DS9746 データシート(PDF) 4 Page - Richtek Technology Corporation

部品番号 DS9746
部品情報  VBUS OVP with a PTVS Diode
PDF  10 Pages
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メーカー  RICHTEK [Richtek Technology Corporation]
ホームページ  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

DS9746 データシート(HTML) 4 Page - Richtek Technology Corporation

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RT9746
4
DS9746-00 March 2016
www.richtek.com
©
Copyright 2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Note 1.
Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect
device reliability.
Note 2.
θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7.
Note 3.
Devices are ESD sensitive. Handling precaution is recommended.
Note 4.
The device is not guaranteed to function outside its operating conditions.
Note 5.
Guaranteed by design.
Parameter
Symbol
Test Conditions
Min
TYP
Max
Unit
OVP Hysteresis
VOVP_HYS
Falling
--
150
--
mV
OVP Propagation Delay to
Turn Off VBUSOUT
tOVP_PD
VBUS = 5V to 10V, (6V/s)
--
0.18
0.25
s
OVP Recover Delay
tOVP_RD
VBUS = 10V to 5V
--
8
--
ms
OCP Threshold Current
IOCP
--
4.5
5
A
OCP Blanking Time
tOCP_B
--
180
--
s
OCP Recover delay
tOCP_RD
--
64
--
ms
OTP Threshold to turn off
only for VBUS_OUT
TOTP_FET
Rising
(Note5)
--
160
--
°C
OTP Threshold Hysteresis
only for VBUS_OUT
TOTP_FET_HYS Falling
(Note5)
--
20
--
°C
OTP Recover Delay
tOTD_RD
--
8
--
ms
OCP Soft-Start Time
tss
--
8
--
ms
FET On Resistance
RON_FET
IBUS_OUT = 1000mA, VBUS = 5V
TA = 25°C
--
35
42
m
External OVP Set
Threshold
VREF_EXT
--
1.2
--
V
External OVP Adjustment
Range
VOVP_EXT
4
--
20
V
External OVP Select
Threshold (Rising)
VOVP_SEL
--
0.3
--
V
External OVP Select
Threshold Hysteresis
--
100
--
mV
WRNB Open-Drain
Impedance
VBUS = 5V
--
--
15



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