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MC33129 の電気的特性と機能

MC33129のメーカーはMotorola Semiconductorsです、この部品の機能は「(MC33129 / MC34129) High Performance Current Mode Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 MC33129
部品説明 (MC33129 / MC34129) High Performance Current Mode Controller
メーカ Motorola Semiconductors
ロゴ Motorola Semiconductors ロゴ 




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MC33129 Datasheet, MC33129 PDF,ピン配置, 機能
Order this document by MC34129/D
High Performance
Current Mode Controllers
The MC34129/MC33129 are high performance current mode switching
regulators specifically designed for use in low power digital telephone
applications. These integrated circuits feature a unique internal fault timer
that provides automatic restart for overload recovery. For enhanced system
efficiency, a start/run comparator is included to implement bootstrapped
operation of VCC. Other functions contained are a temperature compensated
reference, reference amplifier, fully accessible error amplifier, sawtooth
oscillator with sync input, pulse width modulator comparator, and a high
current totem pole driver ideally suited for driving a power MOSFET.
Also included are protective features consisting of soft–start,
undervoltage lockout, cycle–by–cycle current limiting, adjustable deadtime,
and a latch for single pulse metering.
Although these devices are primarily intended for use in digital telephone
systems, they can be used cost effectively in many other applications.
Current Mode Operation to 300 kHz
Automatic Feed Forward Compensation
Latching PWM for Cycle–by–Cycle Current Limiting
Continuous Retry after Fault Timeout
Soft–Start with Maximum Peak Switch Current Clamp
Internally Trimmed 2% Bandgap Reference
High Current Totem Pole Driver
Input Undervoltage Lockout
Low Startup and Operating Current
Direct Interface with Motorola SENSEFET Products
MC34129www.DataSheet4U.com
MC33129
HIGH PERFORMANCE
CURRENT MODE
CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
14
1
P SUFFIX
PLASTIC PACKAGE
CASE 646
14
1
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
CSoft–Start 12
7
Gnd
6
Vref 2.5V
5
RT/CT
Sync/Inhibit 4
Input
Simplified Block Diagram
Soft–Start
and
Fault Timer
Start/Run
13 Start/Run
Output
Undervoltage 14
Lockout
VCC
1.25V
Reference
8
Vref 1.25V
X2
Oscillator
Latching
PWM
Error Amp
9
+
10
Noninverting
Input
Inverting
11
Input
Feedback/
1 PWM Input
Drive Out
2
Drive Gnd
3
Ramp Input
Drive Output 1
Drive Ground 2
Ramp Input 3
Sync/Inhibit
Input
4
RT/CT 5
Vref 2.5 V 6
Gnd 7
14 VCC
13 Start/Run Output
12 CSoft–Start
Feedback/
11 PWM Input
10
Error Amp
Inverting Input
9 Error Amp
Noninverting Input
8 Vref 1.25 V
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC34129D
MC34129P
TA = 0° to +70°C
SO–14
Plastic DIP
MC33129D
TA = – 40° to +85°C
MC33129P
SO–14
Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 1
1

1 Page





MC33129 pdf, ピン配列
MC34129 MC33129
ELECTRICAL CHARACTERISTICS (VCC = 10 V, TA = 25°C [Note 1], unless otherwise noted.)
Characteristics
Symbol
Min
PWM COMPARATOR
Input Offset Voltage (Vin = 1.25 V)
Input Bias Current
Propagation Delay, Ramp Input to Drive Output
VIO
IIB
tPLH(IN/DRV)
150
SOFT–START
Capacitor Charge Current (Pin 12 = 0 V)
Buffer Input Offset Voltage (Vin = 1.25 V)
Buffer Output Voltage (ISink = 100 µA)
Ichg
VIO
VOL
0.75
FAULT TIMER
Restart Delay Time
tDLY
200
START/RUN COMPARATOR
Threshold Voltage (Pin 12)
Vth –
Threshold Hysteresis Voltage (Pin 12)
Output Voltage (ISink = 500 µA)
Output Off–State Leakage Current (VOH = 15 V)
Output Zener Voltage (IZ = 10 mA)
VH
VOL
IS/R(leak)
VZ
9.0
OSCILLATOR
Frequency (RT = 25.5 k, CT = 390 pF)
Capacitor CT Discharge Current (Pin 5 = 1.2 V)
Sync Input Current
High State (Vin = 2.0 V)
Low State (Vin = 0.8 V)
fOSC
Idischg
IIH
IIL
80
240
Sync Input Resistance
Rin 12.5
DRIVE OUTPUT
Output Voltage
High State (ISource = 200 mA)
Low State (ISource = 200 mA)
VOH
VOL
8.3
Low State Holding Current
IH –
Output Voltage Rise Time (CL = 500 pF)
Output Voltage Fall Time (CL = 500 pF)
Output Pull–Down Resistance
tr
tf
RPD
100
UNDERVOLTAGE LOCKOUT
Startup Threshold
Vth 3.0
Hysteresis
VH 5.0
TOTAL DEVICE
Power Supply Current
RT = 25.5 k, CT = 390 pF, CL = 500 pF
ICC 1.0
Power Supply Zener Voltage (IZ = 10 mA)
VZ 12
NOTE: 1. Tlow = 0°C for MC34129
–40°C for MC33129
Thigh = +70°C for MC34129
+85°C for MC33129
Tywp ww.DataMSahxeet4U.Ucnoimt
275
–120
250
400
–250
mV
µA
ns
1.2 1.50 µA
15 40 mV
0.15
0.225
V
400 600 µs
2.0
350
10
0.4
(VCC + 7.6)
10.3
2.0
V
mV
V
µA
V
100 120 kHz
350 460 µA
µA
40 125
15 35
32 50 k
V
8.9 –
1.4 1.8
225 – µA
390 – ns
30 – ns
225 350 k
3.6 4.2 V
10 15 %
2.5 4.0 mA
14.3 – V
MOTOROLA ANALOG IC DEVICE DATA
3


3Pages


MC33129 電子部品, 半導体
MC34129 MC33129
Figure 13. 1.25 V Reference Output Voltage
versus Temperature
0 *Vref = 1.225 V
*Vref = 1.250 V
*Vref = 1.275 V
–2.0
–4.0
–6.0
–8.0
–10
–55
VCC = 10 V
RL =
*Vref at TA = 25°C
–25 0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
100
125
Figure 14. 2.5 V ReferenwcwewO.DuatptauSthVeoeltt4aUg.ceom
versus Temperature
0 *Vref = 2.375 V
*Vref = 2.500 V
*Vref = 2.625 V
4.0
8.0
–12
–16
–20
–55
VCC = 10 V
RL = 2.5 k
*Vref at TA = 25°C
–25 0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
100
125
Figure 15. Drive Output Saturation
versus Load Current
0
VCC
–1.0
VCC = 10 V
TA = 25°C
–2.0 Source Saturation
(Load to Ground)
–3.0
Figure 16. Drive Output Waveform
10 RL = R
CL = 500 pF
TA = 25°C
3.0 Sink Saturation
(Load to VCC)
2.0
1.0 0
Gnd
0
0 200 400 600 800
IO, OUTPUT LOAD CURRENT (mA)
1.0 µs/DIV
Figure 17. Supply Current versus Supply Voltage
10
RT = 25.5 k
8.0
CT = 390 pF
TA = 25°C
6.0
4.0
CL = 500 pF
2.0
CL = 15 pF
0
0 4.0 8.0 12 16
VCC, SUPPLY VOLTAGE (V)
6 MOTOROLA ANALOG IC DEVICE DATA

6 Page



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共有リンク

Link :


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HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Motorola Semiconductors
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MC33129

(MC33129 / MC34129) High Performance Current Mode Controller

Motorola Semiconductors
Motorola Semiconductors


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