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參數(shù)資料
| 型號(hào)： | SC1766CS14 |
| 廠商： | Semtech Corporation |
| 英文描述： | BATTERY CHARGE CONTROLLER |
| 中文描述： | 電池充電控制器 |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大小： | 259K |
| 代理商： | SC1766CS14 |
1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
BATTERY
CHARGE CONTROLLER
SC1766
Janaury 30, 1998
Note:
(1) Add suffix ‘TR’ for tape and reel.
FEATURES
Reliable fast charge control of NiMH/NiCd
batteries
Fast charge termination by:
1
Accurate -
V detection level -0.25% with
respect to peak value
2
Peak voltage timer (0
V)
Adjustable fast charge safety timer
Protection against temperature fault
Protection against short-circuited and open
batteries
Wide operation voltage range of 9V to 18V, no
extra regulator needed
Large battery voltage detection range of 0.65V to
3.7V
LED drivers to indicate charge status or fault
conditions
Voltage reference output
Quick and easy testing for production
Space saving 8-pin and 14-pin SO packages
DESCRIPTION
The SC1766 fast charge controller IC is designed for
intelligent charging of NiMH or NiCd batteries without
overcharging. It detects a voltage drop (-
V) occurring
in the final stage of a fast charging cycle and
correspondingly controls the charging current. Fast
charge can also be cut off by a peak voltage timer
(0
V).
The detection of -
V is a very reliable method to
terminate fast charging for NiMH and NiCd batteries.
The SC1766 uses -
V detection as one of the primary
decisions for fast charge cut-off. The -
V value of the
SC1766 is as small as 4mV per cell, particularly
suitable for NiMH as well as NiCd batteries. The peak
voltage timer is particularly useful when the voltage
drop at the end of charge for some batteries, e.g.
NiMH cells, is not pronounced enough for reliable
detection. An adjustable safety timer (3 settings) is
used as a backup termination method. Provisions are
made with the SC1766 to prevent fast charge under
temperature fault conditions. Two LED outputs are
used to indicate the charging status. Another flash LED
output can be used alone to indicate charge status.
AC mode allows the battery to drive its loads while
being charged. Test mode is provided to dramatically
reduce production test time.
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
APPLICATIONS
Battery chargers for:
Mobile phones
Notebook and laptop personal computers
Portable power tools and toys
Portable communications equipment
Portable video and stereo equipment
ORDERING INFORMATION
DEVICE
(1)
PACKAGE
SC1766CS08
SO-8
SC1766CS14
SO-14
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Maximum
Units
Supply Voltage
V
CC
18
V
DC Voltage Applied
to any Pin
18
V
Sink Current of V
OUT
pin, LED pin, and
FLASH pin
20
mA
Operating
Temperature Range
T
A
0 to 70
°C
Storage
Temperature Range
T
STG
-65 to 150
°C
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