SS6783A Datasheet, PDF (1/12 Pages) Silicon Standard Corp. – Battery Charge Controller for Low Power Charging

SS6783A(G)
Battery Charge Controller for Low Power Charging
FEATURES
DESCRIPTION
Fast charge control of NiMH/NiCd batteries.
Fast charge termination by: ^{−∆V}, ^{0 ∆V} safety
timer, or maximum voltage.
Protection against battery voltage faults.
Pulsed trickle-charge mode.
Quick and easy testing for production.
8-pin DIP or SO packages.
APPLICATIONS
Battery Fast Chargers for:
Mobile Phones.
Notebook and Laptop Personal Computers.
Portable Power Tools and Toys.
Portable Communication Equipment.
Portable Video & Stereo Equipment.
The SS6783A fast charge controller IC is designed
for intelligent charging of NiMH or NiCd batteries
without the risk of overcharge.
-D V detection (-0.25%) and 0D V detection (peak)
voltage timer) are the primary methods employed
by the SS6783A to terminate fast charging.
Fast charging can also be cut off using the
maximum battery voltage along with the safety
timer to prevent charging under fault conditions of
the charging system or the battery itself.
The safety timer period is adjustable for flexible
usage allowing the SS6783A to be used with a wide
range of battery capacities. A test mode is provided
for charger manufacturers to dramatically reduce
production test time.
This device is available with Pb-free lead finish (second-level interconnect) as SS6783AGS.
TYPICAL APPLICATION CIRCUIT
V_IN=5V
R3 10K D3 LL4148
2SC4672 ^{R2 0.5}
Q1 _D1 D2
R1 680
+
C1
LL4148
LL4148
47µF
2-Cell
NiMH/NiCd
R6
R4 _100K
68K
C2
R5
220K ^4.7µF
R7
100K
U1
1 _REF
VCC ⁸
C3
R8
0.1µF ^120K
2 _{TIMER VBT} 7
R9 _{3 MODE ICON 6}
200K
4 _{GND LED} 5
SS6783A
LED1
R10
680
*Note: I_CHARGE=380mA @V_BAT=2.8V
Linear Charger for 2-Cell NiMH/NiCd Batteries
1/11/2005 Rev.2.10
www.SiliconStandard.com
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