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MC34063A の電気的特性と機能

MC34063AのメーカーはON Semiconductorです、この部品の機能は「(MC33063A / MC34063A) Step-Up/Down/ Inverting Switching Regulators」です。


製品の詳細 ( Datasheet PDF )

部品番号 MC34063A
部品説明 (MC33063A / MC34063A) Step-Up/Down/ Inverting Switching Regulators
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MC34063A Datasheet, MC34063A PDF,ピン配置, 機能
MC34063A, MC33063A,
NCV33063A
1.5 A, Step−Up/Down/
Inverting Switching
Regulators
The MC34063A Series is a monolithic control circuit containing the
primary functions required for DC−to−DC converters. These devices
consist of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit,
driver and high current output switch. This series was specifically
designed to be incorporated in Step−Down and Step−Up and
Voltage−Inverting applications with a minimum number of external
components. Refer to Application Notes AN920A/D and AN954/D
for additional design information.
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
Pb−Free Packages are Available
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Drive 8
Collector
Ipk 7
Sense
6
VCC
Comparator 5
Inverting
Input
S Q Q2
R
100
Q1
Ipk
Oscillator
CT
Comparator
+ 1.25 V
Reference
Regulator
1
Switch
Collector
2 Switch
Emitter
3 Timing
Capacitor
4
GND
(Bottom View)
This device contains 51 active transistors.
Figure 1. Representative Schematic Diagram
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8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
3x063
ALYWA
G
1
8
1
PDIP−8
P, P1 SUFFIX
CASE 626
8
3x063AP1
AWL
YYWWG
1
8
33063AVP
AWL
YYWWG
1
x
A
L, WL
Y, YY
W, WW
G or G
= 3 or 4
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
Switch
Collector
Switch
Emitter
1
2
Timing 3
Capacitor
GND 4
8
Driver
Collector
7 Ipk Sense
(Top View)
6 VCC
Comparator
5 Inverting
Input
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
February, 2007 − Rev. 19
1
Publication Order Number:
MC34063A/D

1 Page





MC34063A pdf, ピン配列
MC34063A, MC33063A, NCV33063A
ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, TA = Tlow to Thigh [Note 4], unless otherwise specified.)
Characteristics
Symbol
Min Typ Max Unit
OSCILLATOR
Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C)
Charge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C)
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
OUTPUT SWITCH (Note 5)
Saturation Voltage, Darlington Connection
( ISW = 1.0 A, Pins 1, 8 connected)
Saturation Voltage (Note 6)
(ISW = 1.0 A, RPin 8 = 82 W to VCC, Forced b ] 20)
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C)
Collector Off−State Current (VCE = 40 V)
COMPARATOR
Threshold Voltage
TA = 25°C
TA = Tlow to Thigh
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V)
MC33063A, MC34063A
MC33063AV, NCV33063A
fosc
Ichg
Idischg
Idischg/Ichg
Vipk(sense)
24 33 42
24 35 42
140 220 260
5.2 6.5 7.5
250 300 350
kHz
mA
mA
mV
VCE(sat)
VCE(sat)
hFE
IC(off)
− 1.0 1.3
− 0.45 0.7
50 75
− 0.01 100
V
V
mA
Vth
Regline
1.225 1.25 1.275
1.21 − 1.29
− 1.4 5.0
− 1.4 6.0
V
mV
Input Bias Current (Vin = 0 V)
IIB − −20 −400 nA
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 − − 4.0 mA
4. Tlow = 0°C for MC34063A, − 40°C for MC33063A, AV, NCV33063A
Thigh = +70°C for MC34063A, + 85°C for MC33063A, +125°C for MC33063AV, NCV33063A
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
6. If the output switch is driven into hard saturation (non−Darlington configuration) at low switch currents (300 mA) and high driver currents
(30 mA), it may take up to 2.0 ms for it to come out of saturation. This condition will shorten the off time at frequencies 30 kHz, and is
magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non−Darlington configuration is used, the following output drive condition is recommended:
Forced b of output switch :
IC
IC output
driver – 7.0
mA
*
w
10
* The 100 W resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
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3


3Pages


MC34063A 電子部品, 半導体
8
7
Rsc
Vin 6
MC34063A, MC33063A, NCV33063A
1 Vout 8
7
2
Rsc
Vin 6
R
1
Vout
2
R ³ 0 for
constant Vin
Figure 9. External Current Boost Connections for IC Peak Greater than 1.5 A
9a. External NPN Switch
9b. External NPN Saturated Switch
(See Note 8)
8. If the output switch is driven into hard saturation (non−Darlington configuration) at low switch currents (300 mA) and high driver currents
(30 mA), it may take up to 2.0 ms to come out of saturation. This condition will shorten the off time at frequencies 30 kHz, and is magnified
at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non−Darlington configuration is used, the following output drive condition is recommended.
http://onsemi.com
6

6 Page



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