MC34067 MC33067

3

MOTOROLA ANALOG IC DEVICE DATA

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

fOSC(low)

500

490

525

–

540

550

kHz

Frequency (Error Amp Output High)

TA = 25°C

Total Variation (VCC = 10 to 18 V, TA = TLow to THigh

fOSC(high)

1900

1850

2050

–

2150

2200

kHz

Oscillator Control Input Voltage, Pin 3 @ 25

°C

Vin

–

2.5

–

V

ONE–SHOT

Drive Output Off–Time

TA = 25°C

Total Variation (VCC = 10 to 18 V, TA = TLow to THigh

tBlank

235

225

250

–

270

280

ns

DRIVE OUTPUTS

Output Voltage

Low State (ISink = 20 mA)

High State (ISource = 20 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

µA

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

µA

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

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 2)

ICC

–

–

0.5

27

0.8

35

mA

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.

=– 40

°C for the MC33067