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PDF UB240 Data sheet ( Hoja de datos )
| Número de pieza | UB240 | |
| Descripción | LION BATTERY PROTECTION IC | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UB240 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
UB240
Preliminary
LION BATTERY PROTECTION
IC FOR 1-SERIAL TO
4-SERIAL-CELL PACK
(SECONDARY PROTECTION)
DESCRIPTION
The UTC UB240 Series is secondary protection IC for 1-, 2-,
3-, or 4-Cell lithium-ion rechargeable battery packs, and
incorporates a high-accuracy voltage detection circuit.
The UTC UB240 Series also includes a high accuracy delay
circuit for over voltage detection time can be set by an external
capacitor.
FEATURES
* High-accuracy voltage detection circuit for each cell
* Overcharge detection voltage n (n=1 to 4): 4.05V to 4.50V
(in 50mV steps)
* Overcharge hysteresis voltage n (n=1 to 4): 0.25V±0.07V,
0.30V±0.10V
* Delay times for overcharge detection can be set by an external
capacitor
* CMOS output active “H”
* Wide operating voltage range 3.6V to 24V
* Wide operating temperature range −40°C to +85°C
* Low current consumption: 1.5μA typ. (+25°C) at 3.5V for each
cell
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UB240L-xx-S08-R
UB240G-xx-S08-R
UB240L-xx-S08-T
UB240G-xx-S08-T
UB240L-xx-P08-R
UB240G-xx-P08-R
Package
SOP-8
SOP-8
TSSOP-8
CMOS IC
Packing
Reel Tape
Tube
Reel Tape
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 11
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Free Datasheet http://www.Datasheet4U.com
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UB240
Preliminary
CMOS IC
OPERATING
1. Overcharge Detection
OUT is turned to “H” (for CMOS output active “H”) when the voltage of one of the batteries exceeds the
overcharge detection voltage (VCU) during charging under normal conditions beyond the overcharge detection delay
time (tCU). This state is called “overcharge.” Attaching FET to the OUT pin provides charge control and a second
protection. At that time, the overcharge state is maintained until the voltage of all batteries decreases from the
overcharge detection voltage (VCU) by the equivalent to the overcharge hysteresis voltage (VCD).
2. Delay Circuit
The overcharge detection delay time (tCU) change with an external capacitor (CCD). The delay times are calculated
by the following equations：
Overcharge detection delay time tCU[s] = (15±5 )CCD [μF]
TIMING CHARTS
V1 Battery
V2 Battery
VCU
Battery voltage
VCD
VSS
VCC
OUT pin voltage
VSS
VCC
VDET
CD pin voltage
VSS
CMOS output active “H” and
Nch open drain models
tCU
V3 Battery
V4 Battery
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 11
QW-R502-Q07.a
Free Datasheet http://www.Datasheet4U.com
5 Page 
UB240
Preliminary
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
11 of 11
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11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet UB240.PDF ] | |
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