MC33167 Ver la hoja de datos (PDF) - Motorola => Freescale

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componentes Descripción

Fabricante

MC33167

Power Switching Regulator

Motorola => Freescale 

MC34167 MC33167

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Power Supply Input Voltage

VCC

40

V

Switch Output Voltage Range

VO(switch)

–2.0 to + Vin

V

Voltage Feedback and Compensation Input

VFB, VComp –1.0 to + 7.0

V

Voltage Range

Power Dissipation

Case 314A, 314B and 314D (TA = +25°C)

PD

Internally Limited W

Thermal Resistance, Junction–to–Ambient

θJA

65

°C/W

Thermal Resistance, Junction–to–Case

Case 936A (D2PAK) (TA = +25°C)

θJC

5.0

°C/W

PD

Internally Limited W

Thermal Resistance, Junction–to–Ambient

θJA

70

°C/W

Thermal Resistance, Junction–to–Case

θJC

5.0

°C/W

Operating Junction Temperature

TJ

+150

°C

Operating Ambient Temperature (Note 3)

MC34167

MC33167

TA

°C

0 to + 70

– 40 to + 85

Storage Temperature Range

Tstg

– 65 to +150

°C

ELECTRICAL CHARACTERISTICS (VCC = 12 V, for typical values TA = +25°C, for min/max values TA is the operating ambient

temperature range that applies [Notes 2, 3], unless otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

OSCILLATOR

Frequency (VCC = 7.5 V to 40 V)

TA = +25°C

fOSC

65

72

TA = Tlow to Thigh

62

–

79

kHz

81

ERROR AMPLIFIER

Voltage Feedback Input Threshold

TA =+ 25°C

VFB(th)

4.95

5.05

TA = Tlow to Thigh

4.85

–

Line Regulation (VCC = 7.5 V to 40 V, TA = +25°C)

Regline

–

0.03

Input Bias Current (VFB = VFB(th) + 0.15 V)

IIB

–

0.15

Power Supply Rejection Ratio (VCC = 10 V to 20 V, f = 120 Hz)

PSRR

60

80

Output Voltage Swing High State (ISource = 75 µA, VFB = 4.5 V)

VOH

4.2

4.9

Low State (ISink = 0.4 mA, VFB = 5.5 V)

VOL

–

1.6

5.15

V

5.20

0.078

%/V

1.0

µA

–

dB

–

V

1.9

PWM COMPARATOR

Duty Cycle (VCC = 20 V)

Maximum (VFB = 0 V)

DC(max)

92

95

Minimum (VComp = 1.9 V)

DC(min)

0

0

100

%

0

SWITCH OUTPUT

Output Voltage Source Saturation (VCC = 7.5 V, ISource = 5.0 A)

Off–State Leakage (VCC = 40 V, Pin 2 = Gnd)

Current Limit Threshold (VCC = 7.5 V)

Switching Times (VCC = 40 V, Ipk = 5.0 A, L = 225 µH, TA = +25°C)

Output Voltage Rise Time

Output Voltage Fall Time

Vsat

Isw(off)

Ipk(switch)

tr

tf

–

(VCC –1.5) (VCC –1.8)

V

–

0

100

µA

5.5

6.5

8.0

A

ns

–

100

200

–

50

100

UNDERVOLTAGE LOCKOUT

Startup Threshold (VCC Increasing, TA = +25°C)

Vth(UVLO)

5.5

5.9

Hysteresis (VCC Decreasing, TA = +25°C)

VH(UVLO)

0.6

0.9

TOTAL DEVICE

Power Supply Current (TA = +25°C )

ICC

Standby (VCC = 12 V, VComp < 0.15 V)

–

36

Operating (VCC = 40 V, Pin 1 = Gnd for maximum duty cycle)

–

40

6.3

V

1.2

V

100

µA

60

mA

NOTES: 1. Maximum package power dissipation limits must be observed to prevent thermal shutdown activation.

2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

3. Tlow = 0°C for MC34167

= – 40°C for MC33167

Thigh = + 70°C for MC34167

= + 85°C for MC33167

2

MOTOROLA ANALOG IC DEVICE DATA

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