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PDF MC33340 Data sheet ( Hoja de datos )
| Número de pieza | MC33340 | |
| Descripción | BATTERY FAST CHARGE CONTROLLER | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Advance Information
Battery Fast Charge
Controller
The MC33340 is a monolithic control IC that is specifically designed as a
fast charge controller for Nickel Cadmium (NiCd) and Nickel Metal Hydride
(NiMH) batteries. This device features negative slope voltage detection as
the primary means for fast charge termination. Accurate detection is ensured
by an output that momentarily interrupts the charge current for precise
voltage sampling. An additional secondary backup termination method can
be selected that consists of either a programmable time or temperature limit.
Protective features include battery over and undervoltage detection, latched
over temperature detection, and power supply input undervoltage lockout
with hysteresis. Provisions for entering a rapid test mode are available to
enhance end product testing. This device is available in an economical
8–lead surface mount package.
• Negative Slope Voltage Detection with 4.0 mV Sensitivity
• Accurate Zero Current Battery Voltage Sensing
• High Noise Immunity with Synchronous VFC/Logic
• Programmable 1 to 4 Hour Fast Charge Time Limit
• Programmable Over/Under Temperature Detection
• Battery Over and Undervoltage Fast Charge Protection
• Rapid System Test Mode
• Power Supply Input Undervoltage Lockout with Hysteresis
• Operating Voltage Range of 3.0 V to 18 V
Simplified Block Diagram
MC33340
BATTERY FAST CHARGE
CONTROLLER
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
DC
Input VCC 8
Vsen
1
Vsen
Gate
2
3
Fast/
Trickle
Internal Bias
Undervoltage
Lockout
Voltage to
Frequency
Converter
Ck
High
Battery
Detect
Low
F/V R
Over
Under
Over
Temp
R Latch
Q
S
Temp
Detect
t1
–∆V Detect
Counter
Timer t2
Vsen
Gate
t3
F/T
Gnd
t/T
Time/
Temp
Select
4
VCC
Battery
Pack
t1/Tref High
7
t2/Tsen
6
t3/Tref Low
5
VCC
This device contains 2,512 active transistors.
This document contains information on a new product. Specifications and information herein
arMe OsuTbjOecRt tOo cLhAangAeNwAithLoOut GnotIiCce.DEVICE DATA
PIN CONNECTIONS
Vsen Input 1
Vsen Gate Output 2
Fast/Trickle Output 3
Gnd 4
8 VCC
7 t1/Tref High
6 t2/Tsen
5 t3/Tref Low
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33340D
MC33340P
SO–8
TA = –25° to +85°C
Plastic DIP
© Motorola, Inc. 1996
Rev 0
1
1 page  
MC33340
Figure 7. Typical Battery Charging Application
Regulator
DC
Input
Charge
Status
Reg Control
R2
Vsen
1
R1
Vsen
Gate
2
3
Fast/
Trickle
MC33340
VCC 8
Internal Bias
Undervoltage
Lockout
Voltage to
Frequency
Converter
Over
Temp
Ck
High
F/V R
Over
Latch
R
Q
2.0 V
Battery
S
Temp
Detect
Detect
1.0 V Low Under
t1
–∆V Detect
Counter
Timer
t2
Vsen
Gate
t3
F/T t/T
Time/
Temp
Select
Gnd 4
ǒ Ǔ+R2
R1
VBatt
Vsen
–
1
VCC
2.9 V
T RNTC
Battery
Pack
30 µA
30 µA
30 µA
VCC
t1/Tref High
7
SW1 R3
t2/Tsen
6
SW2
t3/Tref Low
5 SW3
R4
0.7 V
Figure 8. Typical Charge Characteristics for NiCd and NiMh Batteries
1.6
Vmax
70
–∆V
dV
1.5 dt 60
Tmax
1.4 50
1.3
Voltage
1.2
Temperature
1.1
Relative Pressure
1.0
0 40 80 120
CHARGE INPUT PERCENT OF CAPACITY
40
30
20
10
160
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
MC33340
Figure 16. Switch Mode Fast Charger
MC34166 or MC34167
ILimit
Osc
PWM
S
Q
R
VCC
4+
Switch
Output
2
R4
Thermal
UVLO
Gnd 3
Ref
EA
Compensation 5
C1
R2
Voltage
Feedback
Input
1
R3 R1
Battery
Pack
Vsen
Gate
2
3
Fast/
Trickle
MC33340
Vsen
Gate
F/T
Gnd 4
AC
Line
Input
The MC33340 can be used to control the MC34166 or MC34167 power switching regulators to produce an economical and efficient fast charger. These devices are
capable of operating continuously in current limit with an input voltage range of 7.5 to 40 V. The typical charging current for the MC34166 and MC34167 is 4.3 A and
6.5 A respectively. Resistors R2 and R1 are used to set the battery pack fast charge float voltage. If precise float voltage control is not required, components R1, R2,
R3 and C1 can be deleted, and Pin 1 must be grounded. The trickle current level is set by resistor R4. It is recommended that a redundant charge termination method
be employed for end user protection. This is especially true for fast charger systems. For additional converter design information, refer to the MC34166 and MC34167
data sheets.
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MC33340.PDF ] | |
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