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RT9719 Datasheet(PDF) 1 Page - Richtek Technology Corporation

Part No. RT9719
Description  Charging System Safety Device
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT9719 Datasheet(HTML) 1 Page - Richtek Technology Corporation

 
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RT9719
1
DS9719-01 April 2011
www.richtek.com
Ordering Information
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Pin Configurations
(TOP VIEW)
WDFN-8L 2x2
SOT-23-6
Charging System Safety Device
General Description
The RT9719 is an integrated circuit (IC) designed to replace
passive device in charging system with extra protection
function. It is optimized to protect low voltage system
from up to 28V high voltage input. The IC monitors the
input voltage to make sure all parameters are operating in
normal range. It also monitors its own temperature and
turn off the MOSFET when the chip temperature exceeds
140
°C. When the input voltage exceeds the threshold,
the IC turns off the power MOSFET within 1us to remove
the power before any damage occurs. User can monitor
the adapter input voltage from CHRIN pin which has 50mA
current capability. The gate of the P-MOSFET will be
controlled by the external charging controller from
GATEDRV pin if all parameters are operating in normal
range.
The RT9719 is available in SOT-23-6 and WDFN-8L 2x2
tiny packages to achieve best solution for PCB space and
total BOM cost saving considerations.
ACIN
ACIN
ISENSE
ISENSE
CHRIN
ACIN
GND
7
6
5
1
2
3
4
8
9
GATEDRV
4
23
5
6
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
No External Blocking Diode Requiring
Overvoltage Turn Off Time of Less Than 1
μμμμμs
High Accuracy Protection Thresholds
Over Temperature Protection
High Immunity of False Triggering Under Transients
Thermal Enhanced SOT-23-6 and 8-Lead WDFN
Packages
RoHS Compliant and Halogen Free
Application
Cellular Phones
Digital Cameras
PDAs and Smart Phones
Portable Instruments
RT9719
Package Type
E : SOT-23-6
QW : WDFN-8L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
OVP
Default : 6.25V
A : 7.20V


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