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MC33342D Datasheet(PDF) 1 Page - ON Semiconductor

tên linh kiện MC33342D
Nội dung chi tiết  Battery Fast Charge Controllers
tải về  16 Pages
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nhà sản xuất  ONSEMI [ON Semiconductor]
Trang chủ  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2005
July, 2005 − Rev. 7
1
Publication Order Number:
MC33340/D
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
177 seconds Fast Change Holdoff Time (MC33340)
708 seconds Fast Change Holdoff Time (MC33342)
Pb−Free Packages are Available
Figure 1. Simplified Block Diagram
This device contains 2,512 active transistors.
DC
Input
VCC
Undervoltage
Lockout
Over
Temp
Latch
Battery
Detect
Temp
Detect
Time/
Temp Select
Vsen
Vsen
Gate
Fast/
Trickle
Voltage to
Frequency
Converter
DV Detect
Counter
Timer
Battery
Pack
Internal Bias
VCC
VCC
GND
Q
R
S
t1/Tref High
t2/Tsen
t3/Tref Low
7
6
5
8
4
3
2
1
High
Low
Vsen
Gate
F/T
Over
Under
t1
t2
t3
t/T
Ck
F/V
R
PDIP−8
P SUFFIX
CASE 626
1
8
SOIC−8
NB SUFFIX
CASE 751
1
8
MARKING
DIAGRAMS
x
= 0 or 2
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
1
8
MC3334xP
AWL
YYWW
(Top View)
PIN CONNECTIONS
VCC
8
Vsen Input
Vsen Gate Output
Fast/Trickle Output
Gnd
t1/Tref High
t2/Tsen
t3/Tref Low
7
6
5
1
2
3
4
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
3334x
ALYWX
G
1
8



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