データシートサーチシステム
Selected language   Japanese  ▼

Delete All
ON OFF
ALLDATASHEET.JP

X  

Preview PDF Download HTML

HM5563A データシート(PDF) 6 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

部品番号. HM5563A
部品情報  One Cell Lithium-ion/Polymer Battery Protection IC
ダウンロード  11 Pages
Scroll/Zoom Zoom In 100% Zoom Out
メーカー  HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]
ホームページ  http://www.hmsemi.com/
Logo 

HM5563A Datasheet(HTML) 6 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Zoom Inzoom in Zoom Outzoom out
 6 / 11 page
background image
______________________________________ ____________________________________________________ _________________________
_
than the overcurrent detection voltage)
during discharging under normal condition
and the state continues for the overcurrent
detection delay time or longer, the
HM5563A turns off the discharging control
FET to stop discharging. This condition is
called overcurrent condition. (The
overcurrent
includes overcurrent, or load short-
circuiting.)
The VM and GND pins are shorted
internally by the RVMS resistor under the
overcurrent condition. When a load is
connected, the VM pin voltage equals the
VDD voltage due to the load.
The overcurrent condition returns to the
normal condition when the load is released
and the impedance between the B+ and B-
pins becomes higher than the automatic
recoverable impedance. When the load is
removed, the VM pin goes back to the
GND potential since the VM pin is shorted
the GND pin with the RVMS resistor.
Detecting that the VM pin potential is lower
than the overcurrent detection voltage
(VIOV1), the IC returns to the normal
condition.
Abnormal Charge Current Detection
If the VM pin voltage drops below the
charger detection voltage (VCHA) during
charging under the normal condition and it
continues for the overcharge detection
delay time (tCU) or longer, the HM5563A
turns the charging control FET off and
stops charging. This action is called
abnormal charge current detection.
Abnormal charge current detection works
when the discharging control FET is on
and the VM pin voltage drops below the
charger detection voltage (VCHA). When an
abnormal charge current flows into a
battery in the overdischarge condition, the
HM5563A consequently turns the charging
control FET off and stops charging after
the battery voltage becomes the
overdischarge detection voltage and the
overcharge detection delay time (tCU)
elapses.
Abnormal charge current detection is
released when the voltage difference
between VM pin and GND pin becomes
lower than the charger detection voltage
(VCHA) by separating the charger. Since the
0 V battery charging function has higher
priority than the abnormal charge current
detection function, abnormal charge
current may not be detected by the product
with the 0 V battery charging function while
the battery voltage is low.
Load Short-circuiting condition
If voltage of VM pin is equal or below
short circuiting protection voltage (VSHORT),
the HM5563A will stop discharging and
battery is disconnected from load. The
maximum delay time to switch current off is
tSHORT. This status is released when voltage
of VM pin is higher than short protection
voltage (VSHORT), such as when
disconnecting the load.
Delay Circuits
The detection delay time for overdischarge
current 2 and load short-circuiting starts
when overdischarge current 1 is detected.
As soon as overdischarge current 2 or load
short-circuiting is detected over detection
delay time for overdischarge current 2 or
load short- circuiting, the HM5563A stops
discharging. When battery voltage falls
below overdischarge detection voltage due
to overdischarge current, the HM5563A stop
discharging by overdischarge current
detection. In this case the recovery of battery
voltage is so slow that if battery voltage
after overdischarge voltage detection delay
time is still lower than overdischarge
detection voltage, the HM5563A shifts to
power-down.


Html ページ

1  2  3  4  5  6  7  8  9  10  11 


Datasheet Download




リンク URL



Privacy Policy
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   ブックマーク
   |   リンク交換   |   メーカーリスト
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn