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參數(shù)資料
| 型號(hào)： | ICS1708ST |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | IC REG LDO 1A 10V TO220FP |
| 中文描述： | QuickSaver充電控制IC的鎳鎘和鎳氫電池 |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 936K |
| 代理商： | ICS1708ST |
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2
ICS1708
Pin Configuration
8-Pin DIP or SOIC
Pin Definitions
Pin
1
2
Name
CHG
CMN
Type
OUT
OUT
Definition
Active high (PFET), active low (NFET) 25mA max. TTL compatible signal used to turn on and off an external current source to
provide pulsed current to charge the battery.
Charge mode indicator. NFET drain rated at 40mA max. turns on an external indicator to show the controller is applying either a
SoftStart
charge or fast charge.
Maintenance mode indicator. NFET drain rated at 40mA max. turns on an external indicator showing the battery is ready to use as the
topping charge or maintenance charge is applied.
Ground.
3
4
5
6
7
8
MMN
VSS
RC
OPREF
VIN
VDD
OUT
IN
IN
IN
An external resistor and capacitor sets the frequency of the internal clock.
Open circuit (no battery) voltage reference. A pull down or external resistor divider from 5V sets a voltage reference on this pin used
to detect the presence of a battery.
Battery voltage normalized to one cell with an external resistor divider.
Device supply =+5.0 VDC +/- 5% regulated. The ICS1708 requires 11mA max. average that includes brief 50mA peak currents.
When used, LEDs, pull-up resistors, and drivers require additional current from the +5VDC supply. An electrolytic and ceramic
capacitor between (or very close to) both VDD and VSS is recommended for bypassing.
Note:
Pin 6 has an internal pull-up.
Input and output pins have internal ESD protection diodes to VDD and VSS for 2KV protection per MIL STD 883 method 3015.7.
Controller Operation
Charging Stages
The charging sequence consists of four stages. The application of current is shown graphically in Figure 1. The
SoftStart
stage gradually
increases current levels up to the user selected fast charge rate during the first two minutes. The
SoftStart
stage is followed by the fast
charge stage, which continues until termination. After fast charge termination, a reduced duty cycle topping charge is applied, followed by
a further reduced cycle maintenance charge. After fast charge termination, the battery is charged and ready to use.
Figure 1: Graphical representation of average current levels during the four charging stages
(
S a g e 3
S a g e 4
S a g e 2
S a g e 1
0
2 m i n
t e r m i n a o n
t e m i n a o n +
C u r r e n
n o t o s c a e )
A v e r a g e
T m e ( n o t o s c a e
Fast Charge
Topping Charge
2.5 to 20%
Maintenance Charge
0.6 to 5%
97%
18%
ICS1708
CHG
VDD
1
2
3
4
5
6
7
8
MMN
CMN
VIN
OPREF
RC
VSS
相關(guān)PDF資料 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS1712 | 制造商:GALAXY 制造商全稱:GALAXY 功能描述:Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries |
| ICS1712M | 制造商:GALAXY 制造商全稱:GALAXY 功能描述:Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries |
| ICS1712MT | 制造商:GALAXY 制造商全稱:GALAXY 功能描述:Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries |
| ICS1712N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| ICS1712S | 制造商:GALAXY 制造商全稱:GALAXY 功能描述:Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries |
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