MC34066 MC33066

3

MOTOROLA ANALOG IC DEVICE DATA

RT = 14.3 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.)

Characteristics

Symbol

Min

Typ

Max

Unit

OSCILLATOR

Frequency (Error Amp Output Low)

TA = 25°C

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

fOSC(low)

90

85

100

–

110

115

kHz

Frequency (Error Amp Output High)

TA = 25°C

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

fOSC(high)

900

850

1000

–

1100

1150

kHz

Oscillator Control Input Voltage, Pin 3 (ISink = 0.5 mA, TA = 25°C)

Vin

1.3

1.4

1.5

V

Output Deadtime (Error Amp Output High)

RDT = 0 Ω

RDT = 1.0 k

DT

–

600

70

700

100

800

ns

ONE–SHOT

Drive Output On–Time (RDT = 1.0 k)

TA = 25°C

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

tOS

1.43

1.4

1.5

–

1.57

1.6

µs

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

9.8

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

–

20

50

ns

FAULT COMPARATOR

Input Threshold

Vth

0.95

1.0

1.05

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

8.1

14

µA

Capacitor Discharge Current (VPin 11 = 2.5 V)

IIdchg

1.0

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 = 0V)

Iin(Enable)

–

–0.2

–1.0

mA

TOTAL DEVICE

Power Supply Current (Enable/UVLO Adjust Pin Open)

Startup (VCC = 13.5 V)

Operating (fOSC = 100 kHz) (Note 2)

ICC

–

–

0.45

21

0.6

30

mA

NOTES: 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.

Tlow =0°C for MC34066

Thigh = +70°C for MC34066

–40

°C for MC33066