MC34067 Datasheet, PDF (3/16 Pages) ON Semiconductor – HIGH PERFORMANCE ZERO VOLTAGE SWITCH RESONANT MODE CONTROLLERS

MC34067 MC33067
ELECTRICAL CHARACTERISTICS (VCC = 12 V [Note 2], ROSC= 18.2 k, RVFO = 2940, COSC = 300 pF, RT = 2370 k, 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 3], unless
otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (Error Amp Output Low)
TA = 25°C
Total Variation (VCC = 10 to 18 V, TA = TLow to THigh
Frequency (Error Amp Output High)
TA = 25°C
Total Variation (VCC = 10 to 18 V, TA = TLow to THigh
Oscillator Control Input Voltage, Pin 3 @ 25°C
ONE–SHOT
Drive Output Off–Time
TA = 25°C
Total Variation (VCC = 10 to 18 V, TA = TLow to THigh
kHz
fOSC(low)
500
525
540
490
–
550
kHz
fOSC(high)
1900
1850
2050
–
2150
2200
Vin
–
2.5
–
V
tBlank
ns
235
250
270
225
–
280
DRIVE OUTPUTS
Output Voltage
Low State (ISink = 20 mA)
Low State (ISink = 200 mA)
High State (ISource = 20 mA)
High State (ISource = 200 mA)
Output Voltage with UVLO Activated (VCC = 6.0 V, ISink = 1.0 mA)
Output Voltage Rise Time (CL = 1.0 nF)
Output Voltage Fall Time (CL = 1.0 nF)
FAULT COMPARATOR
Input Threshold
Input Bias Current (VPin ₁₀ = 0 V)
Propagation Delay to Drive Outputs (100 mV Overdrive)
SOFT–START
Capacitor Charge Current (VPin ₁₁ = 2.5 V)
Capacitor Discharge Current (VPin ₁₁ = 2.5 V)
UNDERVOLTAGE LOCKOUT
Startup Threshold, VCC Increasing
Enable/UVLO Adjust Pin Open
Enable/UVLO Adjust Pin Connected to VCC
Minimum Operating Voltage After Turn–On
Enable/UVLO Adjust Pin Open
Enable/UVLO Adjust Pin Connected to VCC
Enable/UVLO Adjust Shutdown Threshold Voltage
Enable/UVLO Adjust Input Current (Pin 9 = 0 V)
TOTAL DEVICE
Power Supply Current (Enable/UVLO Adjust Pin Open)
Startup (VCC = 13.5 V)
Operating (fOSC = 500 kHz) (Note 2)
VOL
VOH
V
–
0.8
1.2
–
1.5
2.0
9.5
10.3
–
9.0
9.7
–
VOL(UVLO)
–
tr
–
tf
–
0.8
1.2
V
20
50
ns
15
50
ns
Vth
0.93
1.0
1.07
V
IIB
–
– 2.0 – 10
µA
tPLH(In/Out)
–
60
100
ns
Ichg
Idischg
4.5
9.0
3.0
8.0
14
µA
–
mA
V
Vth(UVLO) 14.8
16
17.2
8.0
9.0
10
V
VCC(min)
8.0
9.0
10
7.6
8.6
9.6
Vth(Enable)
6.0
7.0
–
V
Iin(Enable)
–
– 0.2 – 1.0
mA
mA
ICC
–
0.5
0.8
–
27
35
NOTES: 1. Maximum package power dissipation limits must be observed.
2. Adjust VCC above the Startup threshold before setting to 12 V.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
T_low = 0°C for the MC34067
= – 40°C for the MC33067
T_high = + 70°C for MC34067
T_high = + 85°C for MC33067
MOTOROLA ANALOG IC DEVICE DATA
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