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MC33340 bảng dữ liệu(PDF) 10 Page - ON Semiconductor

tên linh kiện MC33340
Giải thích chi tiết về linh kiện  Battery Fast Charge Controllers
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nhà sản xuất  ONSEMI [ON Semiconductor]
Trang chủ  http://www.onsemi.com
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MC33340 bảng dữ liệu(HTML) 10 Page - ON Semiconductor

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MC33340, MC33342
http://onsemi.com
10
Figure 11. Timer Functional Block Diagram
Oscillator
760 kHz
÷23
÷26
÷23
÷21
÷25
÷28
÷22
÷2
÷2
÷2
÷2
Normal
Test
Switch 2
211
Switch 3A
25
95 kHz
SCK to
Voltage to
Frequency
Converter
Fast/Trickle Output
Time and Test Decoder
Each test mode bypass switch is shown
in the proper position for normal charger operation.
÷22
t1/TrefHigh
t3/TrefLow
t2/Tsen
Switch 3B
211
Switch 1
219
Q
Q
22 ms Convert
11 ms Preset
Holdoff Time Signal
D
MC33340
MC33342
Figure 12. Line Isolated Linear Regulator Charger
This application combines the MC33340/342 with an adjustable three terminal regulator to form an isolated secondary side battery charger. Regulator IC2
operates as a constant current source with R7 setting the fast charge level. The trickle charge level is set by R5. The R2/R1 divider should be adjusted so
that the Vsen input is less than 2.0 V when the batteries are fully charged. The printed circuit board shown below will accept the several TO−220 style heat-
sinks for IC2 and are all manufactured by AAVID Engineering Inc.
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
DC
Input
D1
Charge
Status
R2
R1
IC1 MC33340 or MC33342
2.0 V
1.0 V
RNTC
10 k
R3
R4
SW2
SW1
SW3
2.9 V
30
mA
30
mA
30
mA
0.6 V
C2
0.1
D3
R5
1.0 k
1N4002
D2
C1
0.01
R7
2.4
R8
220
IAdj
R6
1.8 k
AC
Line
Input
R2
+ R1
VBatt
Vsen
– 1
Ichg(fast) +
Vref ) (IAdj R8)
R7
Ichg(trickle) +
Vin – Vf(D3) –VBatt
R5
LM317
IC2
D4


Số phần tương tự - MC33340

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
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