MC33264DM-2.8 Ver la hoja de datos (PDF) - Motorola => Freescale

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MC33264DM-2.8

Micropower smallCAP™ Voltage Regulators with On/Off Control

Motorola => Freescale 

MC33264

ELECTRICAL CHARACTERISTICS (continued) (Vin = 6.0 V, IO = 10 mA, CO = 1.0 µF, TJ = 25°C (Note 1), unless otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

ON/OFF INPUTS

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ On/Off Input (Pin 3 Tied to Ground)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Logic “1” (Regulator ON)

VOn/Off

V

2.4

–

Vin

Logic “0” (Regulator OFF)

0

–

0.5

On/Off Input (Pin 2 Tied to Vin)

Logic “0” (Regulator ON)

Logic “1” (Regulator OFF)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ On/Off Pin Input Current (Pin 3 Tied to Ground)

0

–

Vin – 2.4

Vin – 0.2

–

Vin

IOn/Off

µA

VOn/Off= 2.4 V

–

1.9

–

On/Off Pin Input Current (Pin 2 Tied to Vin)

VOn/Off = Vin – 2.4 V

–

12

–

NOTES: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

2. Quiescent current is measured where the PNP pass transistor is in saturation. VCE = –0.5 V guarantees this condition.

3. Noise tests on the MC33264 are made with a 0.01 µF capacitor connected across Pins 8 and 5.

DEFINITIONS

Dropout Voltage – The input/output voltage differential at

which the regulator output no longer maintains regulation

against further reductions in input voltage. Measured when

the output drops 100 mV below its nominal value (which is

measured at 1.0 V differential), dropout voltage is affected by

junction temperature, load current and minimum input supply

requirements.

Line Regulation – The change in output voltage for a

change in input voltage. The measurement is made under

conditions of low dissipation or by using pulse techniques such

that average chip temperature is not significantly affected.

Load Regulation – The change in output voltage for a

change in load current at constant chip temperature.

Maximum Power Dissipation – The maximum total

device dissipation for which the regulator will operate within

specifications.

Quiescent Current – Current which is used to operate the

regulator chip and is not delivered to the load.

Output Noise Voltage – The rms ac voltage at the output,

with constant load and no input ripple, measured over a

specified frequency range.

Figure 1. Quiescent Current

versus Load Current

5.0

TA = 25°C

MC33264D–5.0

1.0

0.10

0.03

0.1

1.0

10

Iload, LOAD CURRENT (mA)

Figure 2. Output Voltage versus Input Voltage

6.0

TA = 25°C

5.0 MC33264D–5.0

4.0

RL = 5.0 k

3.0

RL = 100 Ω

2.0

1.0

0

100

0

1.0

2.0

3.0

4.0

5.0

6.0

Vin, INPUT VOLTAGE (V)

MOTOROLA ANALOG IC DEVICE DATA

3

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