MC34060ADR2 datasheet(4/16 Pages) ONSEMI

Part #	MC34060ADR2

Description	Fixed Frequency, PWM, Voltage Mode Single Ended Controllers

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Manufacturer	ONSEMI [ON Semiconductor]

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MC34060A, MC33060A

http://onsemi.com

4

ELECTRICAL CHARACTERISTICS (continued) (VCC = 15 V, CT = 0.01 mF, RT = 12 kW, unless otherwise noted.

For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.)

Characteristics

Symbol

Min

Typ

Max

Unit

PWM COMPARATOR SECTION (Test circuit Figure 11)

Input Threshold Voltage

(Zero Duty Cycle)

VTH

−

3.5

4.5

V

Input Sink Current

(V[Pin 3] = 0.7 V)

II

0.3

0.7

−

mA

DEAD−TIME CONTROL SECTION (Test circuit Figure 11)

Input Bias Current (Pin 4)

(Vin = 0 V to 5.25 V)

IIB(DT)

−

−1.0

−10

mA

Maximum Output Duty Cycle

(Vin = 0 V, CT = 0.01 mF, RT = 12 kW)

(Vin = 0 V, CT = 0.001 mF, RT = 47 kW)

DCmax

90

−

96

92

100

−

%

Input Threshold Voltage (Pin 4)

(Zero Duty Cycle)

(Maximum Duty Cycle)

VTH

−

0

2.8

−

3.3

−

V

OSCILLATOR SECTION

Frequency

(CT = 0.01 mF, RT = 12 kW, TA = 25°C)

TA = Tlow to Thigh − MC34060A

TA = Tlow to Thigh − MC33060A

(CT = 0.001 mF, RT = 47 kW)

fosc

9.7

9.5

9.0

−

10.5

−

25

11.3

11.5

−

kHz

Standard Deviation of Frequency*

(CT = 0.001 mF, RT = 47 kW)

σfosc

−

1.5

−

%

Frequency Change with Voltage

(VCC = 7.0 V to 40 V)

Dfosc(DV)

−

0.5

2.0

%

Frequency Change with Temperature

(DTA =Tlow to Thigh)

(CT = 0.01 mF, RT = 12 kW)

Dfosc(DT)

−

4.0

−

%

UNDERVOLTAGE LOCKOUT SECTION

Turn−On Threshold (VCC increasing, Iref = 1.0 mA)

Vth

4.0

4.7

5.5

V

Hysteresis

VH

50

150

300

mV

TOTAL DEVICE

Standby Supply Current

(Pin 6 at Vref, all other inputs and outputs open)

(VCC = 15 V)

(VCC = 40 V)

ICC

−

5.5

7.0

10

15

mA

Average Supply Current

(V[Pin 4] = 2.0 V, CT = 0.001 mF, RT = 47 kW). See Figure 11.

IS

−

7.0

−

mA

*Standard deviation is a measure of the statistical distribution about the mean as derived from the formula; σ =

N

Σ (xn −x)2

n − 1

N−1

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