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MC33349 Datasheet

Lithium Battery Protection Circuit for One Cell Battery Packs

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MC33349
Lithium Battery Protection
Circuit for One Cell
Battery Packs
The MC33349 is a monolithic lithium battery protection circuit that
is designed to enhance the useful operating life of a one cell
rechargeable battery pack. Cell protection features consist of
internally trimmed charge and discharge voltage limits, discharge
current limit detection, and a low current standby mode when the cell
is discharged. This protection circuit requires a minimum number of
external components and is targeted for inclusion within the battery
pack.
Internally Trimmed Charge and Discharge Voltage Limits
Discharge Current Limit Detection
Low Current Standby Mode when Cells are Discharged
Dedicated for One Cell Applications
Minimum Components for Inclusion within the Battery Pack
Available in a Low Profile Surface Mount Package
Typical One Cell Smart Battery Pack
5
MC33349
6
4
1 32
http://onsemi.com
6
1
PLASTIC PACKAGE
N SUFFIX
CASE 1262
(SOT–23)
MARKING DIAGRAMS
1
v = Version code number
xx = Date code
PIN CONNECTIONS
DO 1
6 Gnd
P– 2
CO 3
5 Vcell
4 Ct
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
© Semiconductor Components Industries, LLC, 2000
May, 2000 – Rev. 1
1
Publication Order Number:
MC33349/D


  ON Semiconductor Electronic Components Datasheet  

MC33349 Datasheet

Lithium Battery Protection Circuit for One Cell Battery Packs

No Preview Available !

MC33349
MAXIMUM RATINGS
Characteristics
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSupply Voltage (Pin 5 to Pin 6)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁInput Voltage
P– Pin Voltage (Pin 5 to Pin 2)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCt Pin (Pin 4 to Pin 6)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOutput Voltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCO Pin Voltage (Pin 3 to Pin 2)
DO Pin Voltage (Pin 1 to Pin 6)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPower Dissipation
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOperating Junction Temperature
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁStorage Temperature
Symbol
VDD
VP–
VCt
VCO
VDO
PD
TJ
Tstg
Value
–0.3 to 12
VDD – 28 to VDD + 0.3
Gnd – 0.3 to VDD + 0.3
VDD – 28 to VDD + 0.3
Gnd – 0.3 to VDD + 0.3
150
–40 to 85
–55 to 125
Unit
V
V
V
V
V
mW
°C
°C
ELECTRICAL CHARACTERISTICS (Ct = 0.01 µF, TA = 25°C, for min/max values TA is the operating junction temperature range
that applies, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max Unit Note1
VOLTAGE SENSING
Cell Charging Cutoff (Pin 5 to Pin 6)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOvervoltage Threshold, VDD Increasing
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ–3, –4 Suffix
VDET1
B
4.2 4.25 4.3 V
–7 Suffix
Overvoltage Hysteresis VDD Decreasing
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCell Discharging Cutoff (Pin 5 to Pin 6)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁUndervoltage Threshold, VDD Decreasing
4.3 4.35 4.4 V
VHYS1
150
200
250 mV B
C
VDET2
2.437
2.5
2.563
V
Overvoltage Delay Time (Ct = 0.01 µF, VDD = 3.6V to 4.5V)
t(DET1)
55
80 105 ms B
Undervoltage Delay Time (VDD = 3.6V to 2.4V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCURRENT SENSING
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁExcess Current Threshold (Detect rising edge of P– pin voltage)
–3, –7 Suffix
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ–4 Suffix
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁShort Protection Voltage (VDD = 3.0V)
t(DET2)
7.0
VDET3
VSHORT
170
45
VDD – 1.1
10
200
75
VDD – 0.8
13
230
105
VDD – 0.5
ms
mV
mV
V
C
D
D
Current Limit Delay Time (VDD = 3.0V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁReset Resistance for Short Protection
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOUTPUTS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCO Nch On Voltage (IO = 50 µA, VDD = 4.4V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁCO Pch On Voltage (IO = –50 µA, VDD = 3.9V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁDO Nch On Voltage (IO = 50 µA, VDD = 2.4V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁDO Pch On Voltage (IO = –50 µA, VDD = 3.9V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁTOTAL DEVICE
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOperating Input Voltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSupply Current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOperating(VDD = 3.9 V, VP– = 0V)
t(DET3)
9.0
13
17 ms D
t(SHORT)
5.0 50 µs D
RSHORT
50
100 150 kW D
Vol1 –
0.2 0.5 V E
Voh1
3.4
3.8
– VF
Vol2 –
0.2 0.5 V G
Voh2
3.4
3.7
– VH
VDD
1.5
10 V A
Icell
3.0 6.0 µA I
Standby (VDD = 2.0 V)
Minimum Operating Cell Voltage for Zero Volt Charging (Pin 5 to
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin 2)
VST
0.3 0.6 µA I
– 1.2 V A
1. Indicates test circuits shown on next page.
http://onsemi.com
2


Part Number MC33349
Description Lithium Battery Protection Circuit for One Cell Battery Packs
Maker ON Semiconductor
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MC33349 Datasheet PDF






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