MC34710 datasheet(6/16 Pages) MOTOROLA

Teilenummer	MC34710

Bauteilbeschribung	Adjustable Dual Output Switching Power Supply

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Hersteller	MOTOROLA [Motorola, Inc]

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34710

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

6

STATIC ELECTRICAL CHARACTERISTICS

Characteristics noted under conditions 4.75 V ≤ VIO ≤ 5.25 V, 12 V ≤ VB+ ≤ 32 V, and 0°C ≤ TJ ≤ 105°C unless otherwise noted.

Typical values noted reflect the approximate parameter mean at TA = 25°C under nominal conditions unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

VI/O SWITCHING REGULATOR

Logic Supply Voltage (IVI/O = 25 mA to 1.0 A)

MODE0 = 0

MODE0 = Open

VI/O

4.8

3.15

–

5.2

3.45

V

Logic Supply Current

VI/O = Nominal, Power Dissipation in Switching Regulator = 0.45 W

IVI/O

0.025

–

1.0

A

Output On Resistance

VB+ = 12 V to 32 V

RDS(ON)

0.5

TBD

2.0

Ω

Soft Start Threshold Voltage

MODE0 = X

VI/O(SOFT)

––

2.5

V

Current Limit Threshold (TJ = 25°C to 100°C)

Normal Operation

Soft Start, VI/O ≤ 2.5 V

ILIMIT(OP)

ILIMIT(SOFT)

2.1

1.3

–

3.2

1.8

A

Minimum Voltage Allowable on VSWITCH Terminal

TJ = 25°C to 100°C

VVSWITCH(MIN)

-0.5

–

V

VCORE LINEAR REGULATOR

Supply Voltage (IVCORE = 5.0 mA to 500 mA) (Note 10)

MODE[2:0] = [0,x,0]

MODE[2:0] = [0,x,Open]

MODE[2:0] = [Open,x,0]

MODE[2:0] = [Open,x,Open]

VCORE(NOM)

3.15

2.35

1.71

1.425

–

3.45

2.65

1.89

1.575

V

Supply Current

VCORE = VCORE(NOM)

IVCORE

1.0

–

500

mA

VCORE Dropout Voltage

VCORE = VCORE(NOM), IVCORE = 0.5 A

IVCORE(DROPOUT)

0.8

–

V

Regulator Input Voltage

VCORE = VCORE(NOM), IVCORE = 0.5 A

VLINB+

VCORE(NOM)

+ 1.0

–

10

V

Normal Current Limit Threshold

TJ = 25°C to 100°C, VLINB+ = VCORE(NOM) + 1.0 V

ILIMIT

800

–

1000

mA

Notes

10.

Refer to Table 1, page 10.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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