34710 datasheet(6/17 Pages) FREESCALE

Part #	34710

Description	Dual Output DC-DC & Linear Regulator IC

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Analog Integrated Circuit Device Data

6

Freescale Semiconductor

34710

STATIC ELECTRICAL CHARACTERISTICS

Characteristics noted under conditions 4.75 V ≤ VIO ≤ 5.25 V, 13 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

SWITCHING REGULATOR (VI/O, MODE0)

Logic Supply Voltage (IVI/O = 25 to 700 mA)

Mode0 = 0

Mode0 = Open (floating)

VI/O

4.8

3.15

5.0

3.25

5.2

3.45

V

Output On Resistance

VB+ = 13 V to 32 V

RDS(ON)

0.5

1.0

2.0

Ω

Soft Start Threshold Voltage

Mode0 = any

VI/O(SOFT)

–

2.5

3.1

V

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

Normal Operation

Soft Start, VI/O ≤ 2.5 V

ILIMIT(OP)

ILIMIT(SOFT)

1.9

1.0

2.4

–

2.9

1.9

A

Minimum Voltage Allowable on VSWITCH Terminal

TJ = 25°C to 100°C

VVSWITCH(MIN)

-0.5

–

V

LINEAR REGULATOR (VCORE, MODE 1, 2, 3, 4)

Supply Voltage (IVCORE = 5.0 mA) (10)

Mode2=Low, Mode1=Don’t Care, Mode0=Low

Mode2=Low, Mode1=Don’t Care, Mode0=Open

Mode2=Open, Mode1=Don’t Care, Mode0=Low

Mode2=Open, Mode1=Don’t Care, Mode0=Open

VCORE(NOM)

3.15

2.45

1.7

1.425

3.3

2.5

1.8

1.5

3.45

2.75

2.05

1.575

V

Supply Voltage (IVCORE = 500 mA) (10)

Mode2=Low, Mode1=Don’t Care, Mode0=Low

Mode2=Low, Mode1=Don’t Care, Mode0=Open

Mode2=Open, Mode1=Don’t Care, Mode0=Low

Mode2=Open, Mode1=Don’t Care, Mode0=Open

VCORE(NOM)

3.0

2.2

1.55

1.33

–

3.4

2.6

1.9

1.53

V

VCORE Dropout Voltage

VCORE = VCORE(NOM), IVCORE = 0.5 A

IVCORE(DROPOUT)

–

0.5

0.8

V

Normal Current Limit Threshold

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

ILIMIT

600

800

1000

mA

Notes

10. Refer to Table 2, page 9.

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