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  ON Semiconductor Electronic Components Datasheet  

MC33342 Datasheet

(MC33340 / MC33342) Battery Fast Charge Controllers

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MC33340, MC33342
Battery Fast Charge
Controllers
The MC33340 and MC33342 are monolithic control IC’s that are
specifically designed as fast charge controllers for Nickel Cadmium
(NiCd) and Nickel Metal Hydride (NiMH) batteries. These devices
feature 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. Fast charge holdoff time is the
only difference between the MC33340 and the MC33342. The
MC33340 has a typical holdoff time of 177 seconds and the
MC33342 has a typical holdoff time of 708 seconds.
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/Undertemperature Detection
Battery Over and Undervoltage Fast Charge Protection
Power Supply Input Undervoltage Lockout with Hysteresis
Operating Voltage Range of 3.25 V to 18 V
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177 seconds Fast Change Holdoff Time (MC33340)
708 seconds Fast Change Holdoff Time (MC33342)
Pb−Free Packages are Available
DC
Input
VCC 8
Undervoltage
Internal Bias
Lockout
VCC
Vsen
Voltage to
Frequency
1 Converter
Over
Temp
Ck
High
Battery
Detect
F/V R
Over
R Latch
Q
S
Temp
Detect
Battery
Pack
Low Under
t1
DV Detect
t1/Tref High
7
Vsen
Gate
Counter
Timer t2
2
Vsen
Gate
t3
3
t2/Tsen
6
t3/Tref Low
5
Fast/
Trickle
F/T
GND
t/T
Time/
Temp Select
4
VCC
This device contains 2,512 active transistors.
Figure 1. Simplified Block Diagram
http://onsemi.com
8
1
8
1
x
A
L
Y
W
G
PDIP−8
P SUFFIX
CASE 626
MARKING
DIAGRAMS
8
MC3334xP
AWL
YYWW
1
SOIC−8
NB SUFFIX
CASE 751
8
3334x
ALYWX
G
1
= 0 or 2
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
Vsen Input 1
8 VCC
Vsen Gate Output 2
7 t1/Tref High
Fast/Trickle Output 3
6 t2/Tsen
Gnd 4
5 t3/Tref Low
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
© Semiconductor Components Industries, LLC, 2005
July, 2005 − Rev. 7
1
Publication Order Number:
MC33340/D


  ON Semiconductor Electronic Components Datasheet  

MC33342 Datasheet

(MC33340 / MC33342) Battery Fast Charge Controllers

No Preview Available !

MC33340, MC33342
MAXIMUM RATINGS (Note 1)
Rating
Symbol
Value
Unit
Power Supply Voltage (Pin 8)
Input Voltage Range
VCC 18 V
V
Time/Temperature Select (Pins 5, 6, 7)
Battery Sense, (Note 2) (Pin 1)
Vsen Gate Output (Pin 2)
Voltage
Current
Fast/Trickle Output (Pin 3)
Voltage
Current
Thermal Resistance, Junction−to−Air
P Suffix, DIP Plastic Package, Case 626
VIR(t/T)
VIR(sen)
VO(gate)
IO(gate)
VO(F/T)
IO(F/T)
RqJA
−1.0 to VCC
−1.0 to VCC + 0.6 or −1.0 to 10
20
50
20
50
100
V
mA
V
mA
°C/W
D Suffix, SO−8 Plastic Package, Case 751
178
Operating Junction Temperature
TJ
+150
°C
Operating Ambient Temperature (Note 3)
TA
−25 to +85
°C
Storage Temperature
Tstg
−55 to +150
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL−STD−883, Method 3015
Machine Model Method 400 V
http://onsemi.com
2


Part Number MC33342
Description (MC33340 / MC33342) Battery Fast Charge Controllers
Maker ON Semiconductor
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MC33342 Datasheet PDF






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