34063A [ESTEK]
monolithic control circuit containing the primary functions required for DC-to-DC converters; 含有所需的DC- DC转换器的主要功能的单片控制电路
| 型号： | 34063A |
| 厂家： | 
Estek Electronics Co. Ltd |
| 描述： | monolithic control circuit containing the primary functions required for DC-to-DC converters |
| 文件： | 总7页 (文件大小：455K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
34063
Description
The MC34063
These devices consis
wi h an active rrent li
incorpo in Ste own and Ste
componen
A
Se
r
ies is
of an interna
ci ui dr
a
monolithic con
mperatur
er and hig
and Volta
t
r
ol ci
r
c
ui
compensa
rrent output switc
Invertin appl at
t
con
t
aining th
e
primary functi
comparator
This series was s
ns wi mini
o
ns re
cont
ecific
num
q
ui
r
e
r
d fo
olled du
lly designed to be
of ex nal
r
DC-t
o
-
DC con
v
er
t
e
r
r
s.
t
l
t
e
e
te
d
referenc
e
,
,
t
y
cycl osc
e
i
llato
t
cu
m
i
t
r
c
t,
i
v
h
c
u
h
i
.
p
m
a
b
r
at
e
ts.
d
p
-
D
p
-
U
p
g
e
-
g
i
c
o
th
a
m
u
e
r
ter
Features
•
•
•
•
•
•
•
Operation from 3.0 V to 40 V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.5 A
Output Voltage Adjustable
Frequency Operation to 100 kHz
Precision 2% Reference
Plastic Package
Pin Connections
Internal Block Digram
Driver
llector
1
8
Switch
llector
Co
C
o
Q
S
Q2
R
Q1
I
7
pk
Se
nse
100
I
pk
Swit
Em tt
Tim
c
er
h
2
3
C
Oscilla
tor
i
i
ng
Capacitor
C
om arator
p
6
5
V
1.25
Ref
V
CC
e
rence
Com
p
v
ara
tor
In
e
rt
i
ng
Inp
ut
4
Gnd
BEIJING ESTEK ELECTRONICS CO.,LTD
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34063
Absolute Maximum Ratings
Symbol
Parameter
Maximum
Units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mA
A
VCC
VIR
Power Supply Voltage
40
-0.3 to +40
40
Comparator Input Voltage Range
Switch Collector Voltage
VC(switch)
VE(switch)
VCE(switch)
VC(driver)
IC(driver)
ISW
Switch Emitter Voltage (VPIN1 = 40 V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
40
40
40
Driver Collector Current (Note 1)
Switch Current
100
1.5
TJ
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
+150
0 to +70
-65 to +150
°C
TA
°C
Tstg
°C
Electrical Characteristics
(Vcc=5.0V, Ta=Tlow to Thigh , unless otherwise
Characteristics
OSCILLATOR
Symbol
Min
Typ
Max Units
Frequency (Vpin5 = 0V, CT = 1.0 nF, TA = 25°C)
Charge Current(VCC = 5.0V to 40V, TA = 25°C)
Discharge Current (VCC = 5.0V to 40V, TA = 25°C)
Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C)
f
OSC
chg
dischg
24
24
33
35
42
42
kHz
µA
µA
–
I
I
140
5.2
220
6.5
260
7.5
I
dischg
/
Ichg
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
OUTPUT SWITCH (NOTE 2)
V
ipk(sence)
250
300
350
mV
Saturation Voltage, Darlington Connection (ISW = 1.0 A, Pins 1, 8 connected)
Saturation Voltage, Darlington Connection (ISW = 1.0 A, Rpin 8 = 82Ω to VCC , Forced
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C)
Collector Off-State Current (VCE = 40 V)
VCE(sat)
–
–
1.0
0.45
75
1.3
0.7
–
V
V
β
≅
20)
V
CE(sat)
h
FE
50
–
–
IC(off)
Vth
40
100
µA
COMPARATOR
Threshold Voltage
(TA=25°C)
V
1.225 1.25 1.275
1.21
–
–
1.29
5.0
(TA =Tlow to Thigh
)
Threshold Voltage Line Regulation
(Vcc=3.0 V to 40 V)
Input Bias Current
(Vin=0 V)
Regline
IIB
1.4
mV
nA
–
–
-20
–
-400
4.0
TOTAL DEVICE
Supply Current (Vcc = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC, Vpin 5 > Vth, Pin 2 =
Gnd, remaining pins open)
ICC
mA
NOTES : 1.Maximum package power dissipation limits must be observed.
2.Low duty cycle pulse techniques are used during test to maintain junction temperature
as close to ambient temperature as possible
BEIJING ESTEK ELECTRONICS CO.,LTD
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34063
Typical Performance Characteristics
Fi
gu
r
e
1. Outpu
Os ll
t
Sw
i
t
c
h
On
-
O
ff Ti
ci
m
e
r
ver
sus
c
i
at
or
Timi
n
g
Capa
t
o
Figure 2. Timing Capacitor Waveform
A
Fi
gu
r
e
3.
E
mi
tter
Follo
we
r
C
o
nf
i
g
urat
i
o
n Outpu
t
Fi
gu
r
e
4. Commo
n
Em
i
tter
C
o
n
fi
g
uration
Saturation Volta
versus
g
e
versus Emitte
r
Curren
t
Output Sw
i
t
ch
Saturation Voltage
Fi
gu
r
e
5. Current Limi
ve sus Te
t
Sense Volta
ure
g
e
Fi
gu
r
e
6. Stand
by Supply Current versus
r
m
p
e
r
a
t
Sup ly Voltage
p
BEIJING ESTEK ELECTRONICS CO.,LTD
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34063
Typical Applications Circuit
Figure 1. Step-Up Converte r.
Note: R to 0 for constant Vin
Figure 2b. External NPN Saturated Switch.
eak Greater than
Figure 2a. External NPN Switch.
Figure 2. External Current Boost Connections for I
BEIJING ESTEK ELECTRONICS CO.,LTD
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34063
Figure 3. Step-Down Converte r.
Figure 4a. External NPN Switch.
Figure 4. External Current Boost Connections for I
Figure 4b. External PNP Suturated Switch.
eak Greater than
BEIJING ESTEK ELECTRONICS CO.,LTD
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34063
Figure 5. Voltage Inverting Converte r.
Figure 6a. External NPN Switch.
Figure 6b. External PNP Saturated Switch.
eak Greater than
Figure 6. External Current Boost Connections for I
BEIJING ESTEK ELECTRONICS CO.,LTD
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34063
Design Formula Table
Calculatio
n
Step-Up
Step-Down
Voltage-Inverting
ton/tof
f
−
iVn
out
+
iVn
+
VF
out
in
+VF
−
Vsat
−
(min)
(min)
in
+
Vsat
−
saVt
ouVt
1
1
(ton+tof )m
ax
1
f
min
f
-5
-5
10
ton
CT
lpk(
4.
0
x
10 ton
4.
0
x
4.
0
x
10-5
otn
s
wi
t
ch)
t
2Iout(max)
+
1
2
I
2
I
+
1
(max)
on
RSC
0.3/lpk(
0.3/lpk(
0.3/lpk(
s
wi
t
ch)
s
wi
t
ch)
s
wi
t
ch)
L(m
V
in
)
in(min)
−
V
Vsat
Vsat
sat
iVn
in(min)
Vout
ton
(max)
×
ton(max)
on(max)
I pk
Ipk (switch)
I pk (switch )
(
switch
)
CO
+
Iout ton
Ipk (switch )
tI
Vripple( pp)
)
9
9
Vripple( pp)
8Vripple( pp )
TERMS AND DEFINITIONS
Vsat
VF -
-
Saturation voltage of the output switch.
Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
R
Vout
=
.1
+
R
1
Vin
Vout
Iout
-
Nominal input voltage.
Desired output voltage,
Desired output current.
-
-
fmin
-
Minimum desired output switching frequency at the selected values of Vin and IO.
Vripple(p-p) –Desired peack-to-peack output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the
line and load regulation.
Ordering Information
ORDERING NUMBER
PACKAGE
MARKING
MC34063A
34063A
SOP-8 /DIP-8
Address :
6A06--6A07
Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing
Postalcode:100039
Tel: 86-010-58895780 / 81 / 82 / 83 / 84
Http://www.estek.com.cn
Fax : 010-58895793
Email:sales@estek.com.cn
REV No:01-060810
BEIJING ESTEK ELECTRONICS CO.,LTD
7
相关型号：
3406B
200 V - 1,000 V Three Phase Bridge 18.0 A - 20.0 A Forward Current 70 ns - 3000 ns Recovery Time
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