LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 41

• Manufacturer Part Number: LinearVoltageRegulators
• Description: Analog And Interface Integratedcircuits Selector Guide & Cross Reference
• Manufacturer: Motorola Semiconductor Products

Battery Pack ICs
Lithium Battery Protection Circuit for One Cell Battery Packs
MC33348D
T A = –25 to +85 C, Case 751
cuit that is designed to enhance the useful operating life of a
one cell rechargeable battery pack. Cell protection features a
consist of internally trimmed charge and discharge voltage
limits, discharge current limit detection with a delayed shut-
down, and a virtually zero current sleepmode state when the
cell is discharged. An additional feature includes an on–chip
charge pump for reduced MOSFET losses while charging or
discharging a low cell voltage battery pack. This protection
circuit requires a minimum number of external components
and is targeted for inclusion within the battery pack. This
MC33348 is available in a standard 8 lead surface mount
package.
NOTE: Additional threshold limit options can be made available. Consult factory for information.
MOTOROLA
70
MC33348D–1
MC33348D–2
MC33348D–3
MC33348D–4
MC33348D–5
MC33348D–6
The MC33348 is a monolithic lithium battery protection cir-
Device
Threshold (V)
Overvoltage
Charge
4.20
4.25
4.35
(continued)
Hysteresis (mV)
Overvoltage
Charge
Charge Pump
300
300
300
300
Voltage
Ground
Typical One Cell Smart Battery Pack
Test
Cell
Output
1
3
2
ORDERING INFORMATION
8
Gate Drive
Discharge
Undervoltage
Threshold (V)
Discharge
Output
2.25
2.28
2.30
MC33348
4
Gate Drive
Charge
Output
Dedicated for One Cell Applications
Minimum Components for Inclusion within the Battery
Available in Standard 8 Lead Surface Mount Package
Internally Trimmed Charge and Discharge Voltage Limits
Discharge Current Limit Detection with Delayed
Virtually Zero Current Sleepmode State when Cells are
Charge Pump for Reduced Losses with a Low Cell
Shutdown
Discharged
Voltage Battery Pack
Pack
ANALOG AND INTERFACE INTEGRATED CIRCUITS
Threshold (mV)
7
Current Limit
6
Discharge
V CC
5 Charge
400
200
400
200
400
200
Gate Drive
Common/
Discharge
Current Limit
SELECTOR GUIDE & CROSS REFERENCE
Temperature Range
T
T
T A = –25 to +85 C
T A = –25 to +85 C
Operating
25
25
85 C
85 C
Package
SO 8
SO 8
SO–8
SO–8