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參數資料
型號: MC34129P
廠商: MOTOROLA INC
元件分類: 穩壓器
英文描述: HIGH PERFORMANCE CURRENT MODE CONTROLLERS
中文描述: 1 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDIP14
封裝: PLASTIC, DIP-14
文件頁數: 3/16頁
文件大小: 347K
代理商: MC34129P
MC34129 MC33129
3
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(VCC = 10 V, TA = 25
°
C [Note 1], unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
PWM COMPARATOR
Input Offset Voltage (Vin = 1.25 V)
Input Bias Current
VIO
IIB
150
275
400
mV
–120
–250
μ
A
Propagation Delay, Ramp Input to Drive Output
tPLH(IN/DRV)
250
ns
SOFT–START
Capacitor Charge Current (Pin 12 = 0 V)
Ichg
VIO
VOL
0.75
1.2
1.50
μ
A
Buffer Input Offset Voltage (Vin = 1.25 V)
Buffer Output Voltage (ISink = 100
μ
A)
15
40
mV
0.15
0.225
V
FAULT TIMER
Restart Delay Time
tDLY
200
400
600
μ
s
START/RUN COMPARATOR
Threshold Voltage (Pin 12)
Vth
VH
VOL
2.0
V
Threshold Hysteresis Voltage (Pin 12)
350
mV
Output Voltage (ISink = 500
μ
A)
Output Off–State Leakage Current (VOH = 15 V)
Output Zener Voltage (IZ = 10 mA)
9.0
10
10.3
V
IS/R(leak)
VZ
0.4
2.0
μ
A
(VCC + 7.6)
V
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
80
100
120
kHz
240
350
460
μ
A
IIH
IIL
40
15
125
35
μ
A
Sync Input Resistance
Rin
12.5
32
50
k
DRIVE OUTPUT
Output Voltage
High State (ISource = 200 mA)
Low State (ISource = 200 mA)
VOH
VOL
8.3
8.9
1.4
1.8
V
Low State Holding Current
IH
tr
tf
225
μ
A
Output Voltage Rise Time (CL = 500 pF)
Output Voltage Fall Time (CL = 500 pF)
Output Pull–Down Resistance
390
ns
30
ns
RPD
100
225
350
k
UNDERVOLTAGE LOCKOUT
Startup Threshold
Vth
VH
3.0
3.6
4.2
V
Hysteresis
5.0
10
15
%
TOTAL DEVICE
Power Supply Current
RT = 25.5 k
, CT = 390 pF, CL = 500 pF
ICC
1.0
2.5
4.0
mA
Power Supply Zener Voltage (IZ = 10 mA)
VZ
12
14.3
V
NOTE:
1.Tlow= 0
°
C for MC34129
–40
°
C for MC33129
Thigh= +70
°
C for MC34129
+85
°
C for MC33129
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