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MC34067 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. MC34067
Description  High Performance Resonant Mode Controllers
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC34067 Datasheet(HTML) 4 Page - ON Semiconductor

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MC34067, MC33067
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (continued) (VCC = 12 V [Note 6], ROSC= 18.2 k, RVFO = 2940 W, COSC = 300 pF,
RT = 2370 W, CT = 300 pF, CL = 1.0 nF. For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range
that applies (Note 7), unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (Error Amp Output Low)
Total Variation (VCC = 10 V to 18 V, TA = TLow to THigh)
fOSC(low)
490
525
550
kHz
Frequency (Error Amp Output High)
Total Variation (VCC = 10 V to 18 V, TA = TLow to THigh)
fOSC(high)
1850
2050
2200
kHz
Oscillator Control Input Voltage, Pin 3
Vin
2.5
V
ONE−SHOT
Drive Output Off−Time
TA = 25°C
Total Variation (VCC = 10 V to 18 V, TA = TLow to THigh)
tBlank
235
225
250
270
280
ns
DRIVE OUTPUTS
Output Voltage
Low State (ISink = 20 mA)
Low State (ISink = 200 mA)
High State (ISource = 20 mA)
High State (ISource = 200 mA)
VOL
VOH
9.5
9.0
0.8
1.5
10.3
9.7
1.2
2.0
V
Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 1.0 mA)
VOL(UVLO)
0.8
1.2
V
Output Voltage Rise Time (CL = 1.0 nF)
tr
20
50
ns
Output Voltage Fall Time (CL = 1.0 nF)
tf
15
50
ns
FAULT COMPARATOR
Input Threshold
Vth
0.93
1.0
1.07
V
Input Bias Current (VPin 10 = 0 V)
IIB
− 2.0
−10
mA
Propagation Delay to Drive Outputs (100 mV Overdrive)
tPLH(In/Out)
60
100
ns
SOFT−START
Capacitor Charge Current (VPin 11 = 2.5 V)
Ichg
4.5
9.0
14
mA
Capacitor Discharge Current (VPin 11 = 2.5 V)
Idischg
3.0
8.0
mA
UNDERVOLTAGE LOCKOUT
Startup Threshold, VCC Increasing
Enable/UVLO Adjust Pin Open
Enable/UVLO Adjust Pin Connected to VCC
Vth(UVLO)
14.8
8.0
16
9.0
17.2
10
V
Minimum Operating Voltage After Turn−On, VCC Decreasing
Enable/UVLO Adjust Pin Open
Enable/UVLO Adjust Pin Connected to VCC
VCC(min)
8.0
7.6
9.0
8.6
10
9.6
V
Enable/UVLO Adjust Shutdown Threshold Voltage
Vth(Enable)
6.0
7.0
V
Enable/UVLO Adjust Input Current (Pin 9 = 0 V)
Iin(Enable)
− 0.2
− 1.0
mA
TOTAL DEVICE
Power Supply Current (Enable/UVLO Adjust Pin Open)
Startup (VCC = 13.5 V)
Operating (fOSC = 500 kHz) (Note 6)
ICC
0.5
27
0.8
35
mA
5. Maximum package power dissipation limits must be observed.
6. Adjust VCC above the Startup Threshold voltage before setting to 12 V.
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
8. Tlow
=0
°C for MC34067
=− 40
°C for MC33067
Thigh =+ 70°C for MC34067
=+ 85
°C for MC33067


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