參數(shù)資料
型號(hào): MC33340D
廠商: MOTOROLA INC
元件分類: 穩(wěn)壓器
英文描述: BATTERY FAST CHARGE CONTROLLER
中文描述: BATTERY CHARGE CONTROLLER, 760 kHz SWITCHING FREQ-MAX, PDSO8
封裝: PLASTIC, SO-8
文件頁數(shù): 9/12頁
文件大?。?/td> 309K
代理商: MC33340D
MC33340
9
MOTOROLA ANALOG IC DEVICE DATA
Figure 12. Timer Functional Block Diagram
Oscillator
760 kHz
÷
23
÷
28
÷
24
÷
21
÷
24
÷
27
÷
23
÷
2
÷
2
÷
2
÷
2
Switch 1
219
Switch 2
211
Switch 3A
25
95 kHz
SCK
to
Voltage to
Frequency
Converter
Timer Output
t1/Tref High
t2/Tsen
t3/Tref Low
Time and Test
Decoder
Decoder
Trickle
Handoff
Switch 3B
211
11 ms
Preset
22 ms
Convert
86 ms
177 s
1.38 s
Vsen Gate
23.5
47.1
Time Period Minutes
94.2
188.4 376.8
Each test mode bypass switch is shown
in the proper position for normal charger operation.
Figure 13. Line Isolated Linear Regulator Charger
This application combines the MC33340 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 heatsinks 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
V Detect
Counter
Timer
Vsen
Gate
Battery
Pack
Internal Bias
VCC
2.9 V
VCC
Gnd
Q
R
S
t1/Tref High
7
t2/Tsen
6
t3/Tref Low
5
8
4
3
2
1
High
Low
F/T
Over
Under
t1
t2
t3
t/T
Ck
F/V
R
DC
Input
D1
Charge
Status
R2
R1
IC1 MC33340
2.0 V
1.0 V
RNTC
10 k
R3
R4
SW2
SW1
SW3
30
μ
A
30
μ
A
30
μ
A
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
Vref
– 1
Ichg(fast)
(IAdjR8)
R7
Ichg(trickle)
Vin– Vf(D3)– VBatt
R5
LM317
IC2
D4
AAVID #
θ
SA
°
C/W
24.0
592502B03400
593002B03400
14.0
590302B03600
9.2
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