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NCP802/D Datasheet

  • NCP802/D

  • Highly Integrated Lithium Battery Protection Circuit for One...

  • 20頁(yè)

  • ETC

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NCP802
Highly Integrated Lithium
Battery Protection Circuit
for One Cell Battery Packs
The NCP802 resides in a lithium battery pack where the battery cell
continuously powers it. This circuit senses cell voltage, charge
current, and discharge current, and correspondingly controls the state
of two, N鈭抍hannel MOSFET switches. These switches reside in series
with the negative terminal of the cell and the negative terminal of the
battery pack. During a fault condition, the NCP802 open circuits the
pack by turning off one of these MOSFET switches, which
disconnects the current path. Internal delay circuitry minimizes
external component count.
Features
http://onsemi.com
MARKING
DIAGRAMS
6
1
SOT23鈭?
SUFFIX
CASE 1262
KNxx
鈥?/div>
Highly Accurate Overvoltage Detector
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
"25
mV at Room Temperature
"30
mV from 鈭? to 55擄C
Fault Detection Thresholds
Overvoltage Threshold: SN1/SAN1=4.35 V, SAN5=4.275 V
Undervoltage Threshold: SN1/SAN1=2.4 V, SAN5=2.3 V
Discharge Current Threshold: SN1/SAN1=0.2 V, SAN5=0.1 V
Charge Current Threshold: 0.1 V
Internal Output Delays
Overvoltage Output Delay: SN1/SAN1=250 ms, SAN5=1 ms
Undervoltage Output Delay: 20 ms
Discharge Current Output Delay: SN1/SAN1=12 ms, SAN5=6 ms
Charge Current Output Delay: SN1/SAN1=16 ms, SAN5=8 ms
Absolute Maximum Rating of 28 V for the Charger Input
Low Quiescent Current
Normal Operating Current: 3.0
mA
Standby Current when Cells are Discharged: 0.1
mA
Zero Volt Charging
Available in a Low Profile Surface Mount Package
Pb鈭扚ree Package May be Available.* The G鈭扴uffix Denotes a
Pb鈭扚ree Lead Finish
6
1
SON鈭?
SAN SUFFIX
CASE 494
KN
xx
KN = Specific Device Code
xx = Date Code
PIN CONNECTIONS
DO 1
P鈭?2
CO 3
SOT23鈭?
(Top View)
DO
V
cell
Gnd
1
2
3
SON鈭?
(Top View)
6
5
4
P鈭?/div>
CO
DS
6
5
4
Gnd
V
cell
DS
V
cell
Gnd
ORDERING INFORMATION
Device
Package
SOT23鈭?
SON鈭?
SON鈭?
(Pb鈭扚ree)
SON鈭?
Shipping
鈥?/div>
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
NCP802
DO
CO
P鈭?/div>
NCP802SN1T1
NCP802SAN1T1
NCP802SAN1T1G
NCP802SAN5T1
Figure 1. Typical One Cell Lithium Ion Battery Pack
*For additional information on our Pb鈭扚ree strategy and soldering details,
please download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
漏
Semiconductor Components Industries, LLC, 2004
鈥燜or information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Publication Order Number:
NCP802/D
1
January, 2004 鈭?Rev. 8

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