BD9786KN
Regulators
System Regulator for HDD
BD9786KN
BD9786KN is an IC included a 2 channel switching regulator and P channel series regulator controller and reset circuit.
The switching regulator enables high efficiency because of a PFM control method. It is also built in a switching
component, Nch FET.
Applications
HDD, PDA
External dimensions
(Unit : mm)
Features
1) 2-ch switching regulator, P-channel series regulator controller
and reset circuit are built-in and recommendable for HDD.
2) High efficiency for PFM and synchronous rectification.
3) Built-in dual N-channel MOSFET switches.
4) Under voltage lockout, output short protection.
5) Built-in soft start circuit.
QFN28V
Absolute maximum rating
(Ta=25°C)
Parameter
Supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Symbol
V
CC
Pd
Topr
Tstg
Limits
7
580
∗
Unit
V
mW
˚C
˚C
−25
to + 85
−55
to
+
125
∗
Derating in done 5.8mW/°C for operating above Ta
>
25˚C.
=
Recommended operating conditions
(Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Supply voltage
V
CC
3.0
5.0
6.0
V
1/2
Appendix
Notes
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The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
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whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
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ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
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About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
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