33932 datasheet(7/21 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33932

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

POWER OUTPUTS OUT1, OUT2

Output-ON Resistance(14), ILOAD = 3.0 A

VPWR = 8.0 V, TJ = 25°C

VPWR = 8.0 V, TJ = 150°C

VPWR = 5.0 V, TJ = 150°C

RDS(ON)

–

120

–

235

325

Output Current Regulation Threshold

TJ < TFB

TJ ≥ TFB (Fold back Region - see Figure 9 and Figure 11)(13)

ILIM

5.2

–

6.5

4.2

8.0

–

High Side Short Circuit Detection Threshold (Short Circuit to Ground)(13)

ISCH

Low Side Short Circuit Detection Threshold (Short Circuit to VPWR)(13)

ISCL

9.0

Output Leakage Current(15), Outputs off, VPWR = 28 V

VOUT = VPWR

VOUT = Ground

IOUTLEAK

–

–60

–

100

–

μA

Output MOSFET Body Diode Forward Voltage Drop, IOUT = 3.0 A

–

2.0

Over-temperature Shutdown(13)

Thermal Limit @ TJ

Hysteresis @ TJ

TLIM

THYS

175

–

200

–

°C

Current Foldback at TJ

(13)

TFB

165

–

185

°C

Current Foldback to Thermal Shutdown Separation(13)

TSEP

–

°C

HIGH SIDE CURRENT SENSE FEEDBACK

Feedback Current (pin FB sourcing current)(16)

IOUT = 0 mA

IOUT = 300 mA

IOUT = 500 mA

IOUT = 1.5 A

IOUT = 3.0 A

IOUT = 6.0 A

IFB

0.0

0.35

2.86

5.71

11.43

–

270

0.775

3.57

7.14

14.29

750

1.56

4.28

8.57

17.15

μA

STATUS FLAG(17)

Status Flag Leakage Current(18)

VSF = 5.0 V

ISFLEAK

–

5.0

μA

Status Flag SET Voltage(19)

ISF = 300 µA

VSFLOW

–

0.4

Notes

13.

This parameter is Guaranteed By Design.

14.

Output-ON resistance as measured from output to

VPWR and from output to GND.

15.

Outputs switched OFF via D1 or EN/D2.

16.

Accuracy is better than 20% from 0.5 A to 6.0 A. Recommended terminating resistor value: RFB = 270 Ω.

17.

Status Flag output is an open drain output requiring a pull-up resistor to logic VDD.

18.

Status Flag Leakage Current is measured with Status Flag HIGH and not SET.

19.

Status Flag Set Voltage measured with Status Flag LOW and SET with ISF = 300 μA. Maximum allowable sink current from this pin is

< 500

μA. Maximum allowable pull-up voltage < 7.0 V.

Table 3. Static Electrical Characteristics (continued)

Characteristics noted under conditions 8.0 V

≤ VPWR ≤ 28 V, -40°C ≤ TA ≤ 125°C, GND = 0 V, unless otherwise noted. Typical

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

Specifications given for H-Bridge A apply symmetrically to H-Bridge B.

Characteristic

Symbol

Min

Typ

Max

Unit

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