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MC34023のメーカーはON Semiconductorです、この部品の機能は「(MC33023 / MC34023) High Speed Single-Ended PWM Controller」です。 |
部品番号 | MC34023 |
| |
部品説明 | (MC33023 / MC34023) High Speed Single-Ended PWM Controller | ||
メーカ | ON Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとMC34023ダウンロード(pdfファイル)リンクがあります。 Total 18 pages
MC34023, MC33023
High Speed Single−Ended
PWM Controller
The MC34023 series are high speed, fixed frequency, single−ended
pulse width modulator controllers optimized for high frequency
operation. They are specifically designed for Off−Line and
DC−to−DC converter applications offering the designer a
cost−effective solution with minimal external components. These
integrated circuits feature an oscillator, a temperature compensated
reference, a wide bandwidth error amplifier, a high speed current
sensing comparator, and a high current totem pole output ideally
suited for driving a power MOSFET.
Also included are protective features consisting of input and
reference undervoltage lockouts each with hysteresis, cycle−by−cycle
current limiting, and a latch for single pulse metering.
The flexibility of this series allows it to be easily configured for
either current mode or voltage mode control.
Features
• 50 ns Propagation Delay to Output
• High Current Totem Pole Output
• Wide Bandwidth Error Amplifier
• Fully−Latched Logic with Double Pulse Suppression
• Latching PWM for Cycle−By−Cycle Current Limiting
• Soft−Start Control with Latched Overcurrent Reset
• Input Undervoltage Lockout with Hysteresis
www.DataSheet4U.com
• Low Startup Current (500 mA Typ)
• Internally Trimmed Reference with Undervoltage Lockout
• 90% Maximum Duty Cycle (Externally Adjustable)
• Precision Trimmed Oscillator
• Voltage or Current Mode Operation to 1.0 MHz
• Functionally Similar to the UC3823
• Pb−Free Packages are Available*
http://onsemi.com
16
1
16
1
PDIP−16
P SUFFIX
CASE 648
SOIC−16W
DW SUFFIX
CASE 751G
MARKING DIAGRAMS
16
16
MC34023P
AWLYYWWG
1
MC33023DW
AWLYYWWG
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
16
Vref
4
Clock
5
RT
6
CT
7
Ramp
Error Amp 3
Output
Noninverting
Input
2
Inverting
Input
1
8
Soft−Start
Oscillator
5.1V
Reference
UVLO
Latching
Error PWM
Amp
Soft−Start
10 Ground
This device contains 176 active transistors.
Figure 1. Simplified Application
15
VCC
13
VC
14
Output
12
Power
Ground
11
Current
9
Limit Ref
Current
Limit/
Shutdown
Error Amp
Inverting Input
Error Amp
Noninverting Input
Error Amp Output
1
2
3
16 Vref
15 VCC
14 Output
Clock 4
RT 5
CT 6
Ramp 7
Soft−Start 8
13 VC
12 Power Ground
11 Current Limit
Reference
10 Ground
9 Current Limit/
Shutdown
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
October, 2005 − Rev. 6
1
Publication Order Number:
MC34023/D
1 Page MC34023, MC33023
ELECTRICAL CHARACTERISTICS (VCC = 15 V, RT = 3.65 kW, CT = 1.0 nF, for typical values TA = + 25°C, for min/max values TA
is the operating ambient temperature range that applies [Note 2], unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max Unit
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = + 25°C)
Line Regulation (VCC = 10 V to 30 V)
Load Regulation (IO = 1.0 mA to 10 mA)
Temperature Stability
Total Output Variation over Line, Load, and Temperature
Output Noise Voltage (f = 10 Hz to 10 kHz, TJ = + 25°C)
Long Term Stability (TA = +125°C for 1000 Hours)
Output Short Circuit Current
OSCILLATOR SECTION
Vref
Regline
Regload
TS
Vref
Vn
S
ISC
5.05
−
−
−
4.95
−
−
− 30
5.1
2.0
2.0
0.2
−
50
5.0
− 65
5.15
15
15
−
5.25
−
−
−100
V
mV
mV
mV/°C
V
mV
mV
mA
Frequency
TJ = + 25°C
Line (VCC = 10 V to 30 V) and Temperature (TA = Tlow to Thigh)
Frequency Change with Voltage (VCC = 10 V to 30 V)
Frequency Change with Temperature (TA = Tlow to Thigh)
Sawtooth Peak Voltage
Sawtooth Valley Voltage
Clock Output Voltage
High State
Low State
ERROR AMPLIFIER SECTION
Input Offset Voltage
Input Bias Current
Input Offset Current
Open−Loop Voltage Gain (VO = 1.0 V to 4.0 V)
Gain Bandwidth Product (TJ = + 25°C)
Common Mode Rejection Ratio (VCM = 1.5 V to 5.5 V)
Power Supply Rejection Ratio (VCC = 10 V to 30 V)
Output Current, Source (VO = 4.0 V)
Output Current, Sink (VO = 1.0 V)
Output Voltage Swing, High State (IO = − 0.5 mA)
Output Voltage Swing, Low State (IO = 1 mA)
Slew Rate
fosc
Dfosc/DV
Dfosc/DT
VOSC(P)
VOSC(V)
VOH
VOL
380
370
−
−
2.6
0.7
3.9
−
VIO
IIB
IIO
AVOL
GBW
CMRR
PSRR
ISource
ISink
VOH
VOL
SR
−
−
−
60
4.0
75
85
0.5
1.0
4.5
0
6.0
400
400
0.2
2.0
2.8
1.0
4.5
2.3
−
0.6
0.1
95
8.3
95
110
3.0
3.6
4.75
0.4
12
kHz
420
430
1.0 %
−%
3.0 V
1.25 V
V
−
2.9
15 mV
3.0 mA
1.0 mA
− dB
− MHz
− dB
− dB
− mA
−
5.0 V
1.0
− V/ms
PWM COMPARATOR SECTION
Ramp Input Bias Current
IIB − −0.5 −5.0
Duty Cycle, Maximum
Duty Cycle, Minimum
DC(max)
DC(min)
80
−
90
−
−
0
Zero Duty Cycle Threshold Voltage Pin 3(4) (Pin 7(9) = 0 V)
Vth 1.1 1.25 1.4
Propagation Delay (Ramp Input to Output, TJ = + 25°C)
tPLH(in/out)
−
60 100
SOFT−START SECTION
Charge Current (VSoft−Start = 0.5 V)
Ichg 3.0 9.0 20
Discharge Current (VSoft−Start = 1.5 V)
Idischg 1.0 4.0
−
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 as possible.
Tlow = 0°C for MC34023
= −40°C for MC33023
Thigh = +70°C for MC34023
= +105°C for MC33023
mA
%
V
ns
mA
mA
http://onsemi.com
3
3Pages MC34023, MC33023
0
− 5.0
VCC = 15 V
− 10
− 15
TA = − 55°C
TA = +125°C
TA = + 25°C
− 20
− 25
− 30
0
10 20 30 40
ISource, SOURCE CURRENT (mA)
Figure 8. Reference Voltage Change
versus Source Current
50
66
65.6 VCC = 15 V
65.2
64.8
64.4
64
− 55 − 25 0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
Figure 9. Reference Short Circuit Current
versus Temperature
Vref LINE REGULATION 10 V to 24 V
(2.0 ms/DIV)
Figure 10. Reference Line Regulation
Vref LOAD REGULATION 1.0 mA to 10 mA
(2.0 ms/DIV)
Figure 11. Reference Load Regulation
100
60 VCC = 15 V
Pin 11(14) = 1.1 V
20
− 20
− 60
− 100
− 55 − 25
0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
Figure 12. Current Limit Comparator Input
Offset Voltage versus Temperature
1.50
1.46 VCC = 15 V
1.42
1.38
1.34
1.30
− 55
− 25 0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
Figure 13. Shutdown Comparator Threshold
Voltage versus Temperature
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6
6 Page | |||
ページ | 合計 : 18 ページ | ||
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PDF ダウンロード | [ MC34023 データシート.PDF ] |
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部品番号 | 部品説明 | メーカ |
MC34023 | (MC33023 / MC34023) High Speed Single-Ended PWM Controller | ON Semiconductor |
MC34025 | (MC33025 / MC34025) High Speed Single-Ended PWM Controller | ON Semiconductor |