MC34063ACN [AIC]
DC/DC CONVERTER CONTROL CIRCUIT; DC / DC转换器控制电路
| 型号： | MC34063ACN |
| 厂家： | 
ANALOG INTERGRATIONS CORPORATION |
| 描述： | DC/DC CONVERTER CONTROL CIRCUIT |
| 文件： | 总9页 (文件大小：129K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-00
! FEATURES
! DESCRIPTION
The MC34063A by
" 3V to 30V Input Voltage Operation.
" Internal 1.6A Peak Current Switch.
" Internal ±1.8% Reference.
Analog
Integrations
Corporation, an improved second source over the
industrial standard MC34063A, is a monolithic
control circuit containing the primary functions
required for DC/DC converters. The device
consists of an internal temperature compensated
reference, comparator, controlled duty cycle
oscillator with an active current limit circuit, driver
and high current output switch. This device is
specifically designed to be incorporated in step-
down, step-up and voltage-inverting applications
with a minimum number of external components.
The ±1.8% internal reference and low quiescent
current of 1.6mA are among the improvements of
the device over the competition.
" Low Quiescent Current at 1.6mA.
" Frequency Operation from 100Hz to 100KHz.
" Current Limiting.
! APPLICATIONS
" Saver for Cellular phones
" DC-DC Converter Module
! TYPICAL APPLICATION CIRCUIT
VOUT
200µH
L
+
D1
1N5819
CO
1
2
8
7
DRI
IPK
VCC
FB
SC
SE
*RS
8.6V SAVER
*:Io=0.3/RS
VIN
C1
3
4
6
5
TC
RB
+
GND
33K
CT
100µF
RA
5.6K
MC34063A
Saver Circuit for Cellular Phone
! ORDERING INFORMATION
MC34063A XX
ORDER NUMBER
PIN CONFIGURATION
TOP VIEW
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
MC34063ACN
(PLASTIC DIP)
1
2
3
4
8 DRI
SC
SE
7
6
5
IPK
TEMPERATURE
C: 0°C~+70°C
VCC
TC
MC34063ACS
(PLASTIC SO)
FB
GND
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
1
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-00
! ABSOLUTE MAXIMUM RATINGS
Supply Voltage
......................................................…………..................................... 30V
Comparator Input Voltage Range ..................................………….................... -0.3V~30V
Switch Collector Voltage .......................................……………......................................30V
Switch Emitter Voltage
Switch Collector to Emitter Voltage
Driver Collector Voltage
.................................……………............................................30V
Switch Current
............................................……………..............................................1.6A
..................................…………….............................................30V
.....................…………..........................................30V
Power Dissipation and Thermal Characteristics
DIP Package
Ta= 25°C ...............................………….............................1.0W
Thermal Resistance .................……….......................100°C /W
SO Package
Ta= 25°C.................................…………….......................625mW
Thermal Resistance .................……….......................160°C /W
Operating Junction Temperature ................................…………..….............................125°C
Operating Ambient Temperature Range .................……...…...............................0°C~70°C
Storage Temperature Range .....................……………....…........................... - 65°C~150°C
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
TEL: (8863)577-2500 FAX:(8863)577-2510
2
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-00
! ELECTRICAL CHARACTERISTICS (VCC= 5V, Ta=25°C, unless otherwise specified.)
PARAMETER
TEST CONDITIONS
SYMBOL MIN. TYP. MAX. UNIT
Oscillator
Charging Current
Discharge Current
Voltage Swing
5.0V≤VCC≤30V
5.0V≤VCC≤30V
PIN 3
ICHG
IDISCHG
10
25
150
0.6
6.0
40
µA
µA
V
100
200
VOSC
Discharge to Charge Current
Ratio
VIPK(SENSE) =VCC
IDISCHG/ ICHG
Current Limit Sense Voltage
ICHG=IDISCHG
VIPK(SENSE)
250
300
350
mV
Output Switch
Saturation Voltage, Darlington
Connection
ISW=1.0A;
VCE(SAT)
1.0
0.4
1.3
0.7
V
V
VC(DRIVER)=VC(SWITCH)
Saturation Voltage
ISW=1.0A; IC(DRIVER)=50mA
VCE (SAT)
(Forced β 20)
DC Current Gain
ISW=1.0A; VCE=5.0V
VCE=30V
hFE
35
120
10
Collector Off-State Current
Comparator
IC(OFF)
nA
Threshold Voltage
Threshold Voltage
0°C≤Ta≤70°C
VFB
1.227
1.21
1.25
0.1
1.273
1.29
V
V
Threshold Voltage Line
Regulation
3.0V≤VCC≤30V
REGLINE
0.3
mV/V
Input Bias Current
Supply current
VIN=0V
IIB
0.4
1.6
1
3
µA
VIPK(SENSE)=VCC
ICC
mA
VPIN 5>VFB
5.0V≤VCC≤30V
CT=0.001µF, PIN 2=GND
Remaining pins open
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
TEL: (8863)577-2500 FAX:(8863)577-2510
3
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-00
! TYPICAL PERFORMANCE CHARACTERISTICS
Output Switch ON-OFF Time vs. Oscillator
Timing Capacitor
Standby Supply Current vs. Supply Voltage
2
1.6
1.2
0.8
0.4
0
VCC=5V
VIPK=VCC
PINꢀ5=GND
CT=1nF
ON TIME
VIPK=VCC
PIN 2=GND
OFF TIME
1
10
100
0.1
0
5
25
30
10
15
20
VCC, Supply Voltage (V)
CT, Oscillator Timing Capacitor (nF)
IPK Threshold Voltage vs Temperature
VFB, Threshold Voltage vs Temperature
350
340
330
320
310
300
290
280
270
260
250
1.3
VCC = 5V,
VCC = 5V
CT = 1nF
CT = 1nF
PIN 5 = GND
1.28
PIN 2 = GND
1.26
1.24
1.22
1.2
0
10
20
30
40
50
60
70
80
10
20
30
40
50
60
70
80
0
Temperature ( C)
°
Temperature (°C)
Common-Emitter Configuration Output Switch
Saturation Voltage vs Collector Current
Emmiter-Follower Configuration Output Switch
Saturation Voltage vs Emmiter Current
1.8
1.7
1.4
1.2
1.0
VCC = 5.0V
PIN 7 =VCC
VCC = 5V
PIN 1, 7, 8 = VCC
PIN 3, 5 = GND
PINS 2, 3, 5 = GND
1.6
1.5
1.4
Darlington Connection
0.8
0.6
0.4
Forced Beta = 20
1.3
1.2
0.2
0
0
0.5
1
1.5
0
0.5
1
1.5
IC, Collector Current (A)
IE, Emitter Current (A)
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-00
! BLOCK DIAGRAM
1
2
8
SC
SE
DRI
Q2
Q S
R
Q1
80
7
IPK
IS
Oscillator
CT
6
3
TC
VCC
Comparator
+
1.25V
Reference
Voltage
-
5
4
GND
FB
! PIN DESCRIPTIONS
PIN 1: SC - 1.6A switch collector
PIN 5: FB
- Feedback comparator inverting input
PIN 2: SE
PIN 3: TC
- Darlington switch emitter
- Oscillator timing capacitor
PIN 6: VCC - Power supply input
PIN 7: IPK - Highside current sense input,
VCC - VIPK=300mV
PIN 4: GND - Power GND
PIN 8: DRI - Drive collector
! APPLICATION INFORMATION
• DESIGN FORMULA TABLE
CALCULATION
STEP-DOWN
STEP-UP
VOLTAGE-INVERTING
t
ON
V
OUT + V
F
V
OUT + V
IN(MIN) - VSAT - VOUT
1
F
V
OUT + VF - VIN(MIN)
t
OFF
IN(MIN)
- V
SAT
VIN - VSAT
V
V
1
1
(tON + tOFF
)
MAX
FMIN
FMIN
FMIN
CT
IC (SWITCH)
RS
4x10-5tON
4 x 10-5tON
4 x 10-5tON
t
ON + tOFF
t
ON + tOFF
2IOUT(MAX)
2IOUT(MAX)
0.33/ IC (SWITCH)
IN(MIN) - VSAT
(
)
2IOUT(MAX)
0.33/ IC (SWITCH)
IN(MIN) - VSAT
(
)
t
OFF
t
OFF
0.33/IC(SWITCH)
OUT ꢁtON(MAX)
ꢀ
ꢁtON(MAX)
ꢀ
ꢁtON(MAX)
V
IN(MIN) - VSAT - V
V
V
L(MIN)
Co
ꢀ
I
C(SWITCH)
I
C(SWITCH)
OUT
RIPPLE(P - P)
I
C(SWITCH)
OUT
RIPPLE(P - P)
I
C( SWITCH) (tON + tOFF)
I
t
ON
I
t
ON
8VRIPPLE(P - P)
V
V
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
5
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-P2
VSAT
VF
=Saturation voltage of the output switch.
=Forward voltage drop of the ringback rectifier
FMIN
- Minimum desired output switching frequency
at the selected values for VIN and IOUT.
VRIPPLE (P-P)- Desired peak-to-peak output ripple voltage.
In practice, the calculated value will need to
be increased due to the capacitor equivalent
series resistance and board layout. The
ripple voltage should be kept to a low value
since it will directly effect the line and load
regulation.
The following power supply characteristics must be
chosen:
VIN
- Nominal input voltage.
VOUT
-Desired output voltage,
OUT
V
=1.25 (1 + RB/RA)
IOUT
- Desired output current.
! APPLICATION EXAMPLES
200 H
VOUT
µ
L
5V/500mA
+
CO
470 F
D1
1N5821
µ
8
1
2
3
CS
SE
DRI
RS
0.25
7
IPK
VCC
FB
VIN
6
5
TC
RB
3.6K
4
470pF
CT
+
GND
C1
100 F
µ
RA
1.2K
MC34063A
Line Regulation
VIN = 10V ~20V @ IO=500mA
40mV
5mV
1.3A
Load Regulation
VIN = 15V, @ IO=10mA ~ 500mA
VIN =15V, @ RL = 0.1Ω
Short Circuit Current
Fig. 1 Step-Down Converter
R1
R2
1
8
7
6
5
CS
DRI
Q1
2
3
4
RS
IPK
SE
TC
VIN
L
VCC
VOUT
+
D1
Co
+
GND
FB
CT
C1
MC34063A
RB
RS
Fig. 2 Step-Down Converter with External PNP Saturation Switch
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
6
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-P2
! APPLICATION EXAMPLES (CONTINUED)
D1
200 H
µ
VOUT
L
2V/200mA
1N5819
R1
150
+
CO
8
7
6
5
1
2
220 F
µ
CS
SE
DRI
IPK
RS
0.22
VIN
3
4
VCC
FB
TC
+
100 F
µ
GND
C1
680pF
CT
MC34063A
RB
RA
2.2K
47K
ꢀ
Line Regulation
Load Regulation
VIN = 8V ~16V @ IO=200mA
100mV
5mV
VIN = 12V, @ IO=80mA ~ 200mA
Fig. 3 Step-Up Converter
D1
L
VOUT
R1
+
8
1
CO
CS
SE
DRI
7
6
5
2
3
4
RS
C1
IPK
Qꢁ
VIN
TC
VCC
R2
+
FB
GND
CT
MC34063A
RB
RA
Fig. 4 Step-Up Converter with External NPN Switch
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
7
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-P2
! APPLICATION EXAMPLES (CONTINUED)
1
8
CS
SE
DRI
RS
0.25
7
2
S
IPK
L
100 H
3
6
5
VIN
TC
VCC
FB
µ
4.5V~6V
+
4
C1
100 F
GND
CT
680pF
µ
D1
MC34063A
1N5819
VOUT
RA
953
RB
8.2K
CO
470 F
-12V/100mA
+
µ
Line Regulation
VIN = 4.5V ~6V @ IO=100mA
VIN = 5V, @ IO=10mA ~ 100mA
20mV
Load Regulation
100mV
Fig.5 Inverting Converter
R2
R1
1
8
7
6
5
CS
SE
DRI
IPK
Q1
2
3
4
RS
TC
VCC
FB
VIN
+
L
D1
GND
C1
CT
MC34063A
RA
VOUT
CO
RB
+
Fig 6. Voltage Inverting Converter With PNP Saturated Switch
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
8
MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-P2
! PHYSICAL DIMENSIONS
" 8 LEAD PLASTIC SO (unit: mm)
D
SYMBOL
MIN
1.35
0.10
0.33
0.19
4.80
3.80
MAX
1.75
0.25
0.51
0.25
5.00
4.00
A
A1
B
H
E
C
D
E
e
A
e
1.27(TYP)
C
H
L
5.80
0.40
6.20
1.27
B
L
" 8 LEAD PLASTIC DIP (unit: mm)
SYMBOL
MIN
0.381
2.92
0.35
0.20
9.01
7.62
6.09
MAX
—
D
A1
A2
b
4.96
0.56
0.36
10.16
8.26
7.12
E1
C
E
D
A2
E
A1
E1
e
C
L
2.54 (TYP)
eB
eB
L
—
10.92
3.81
e
b
2.92
ANALOG INTEGRATIONS CORPORATION
4F,9IndustryE.9thRoad,Science-basedIndustrialPark,Hsinchu,Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
9
相关型号：
MC34063AD-TR
Switching Regulator/Controller, Voltage-mode, 0.1A, 100kHz Switching Freq-Max, BIPolar, PDSO8
MOTOROLA
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