MC33998 データシートの表示（PDF） - Freescale Semiconductor

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MC33998

Switching Power Supply with Linear Regulators

Freescale Semiconductor 

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Table 3. Static Electrical Characteristics (continued)

Characteristics noted under conditions 9.0 V ≤ VPWR ≤ 16 V, -40°C ≤ TJ = TA ≤ 125°C, using the typical application circuit (see

Figure 8) 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

SENSOR SUPPLIES (VREF1, VREF2)

VREF On-Resistance, TA = -40°C

RDS(ON)

IVREF = 200 mA, IVDDH = 200 mA, VPWR = KA_VPWR = 14 V, EN = 5.0 V

–

mΩ

–

280

VREF On-Resistance, TA = +25°C

RDS(ON)

IVREF = 200 mA, IVDDH = 200 mA, VPWR = KA_VPWR = 14 V, EN = 5.0 V

–

mΩ

–

350

VREF On-Resistance, TA = +125°C

RDS(ON)

IVREF = 200 mA, IVDDH = 200 mA, VPWR = KA_VPWR = 14 V, EN = 5.0 V

–

mΩ

–

455

VREF Short-to-Battery Detect Current

VPWR = KA_VPWR = 14 V, EN = 5.0 V, SNSEN = 5.0 V

ISC_BAT

mA

500

–

900

VREF Short-to-Ground Detect Current

VPWR = KA_VPWR = 14 V, EN = 5.0 V, SNSEN = 5.0 V

Maximum Output Capacitance (Total) (13)

SUPERVISORY CIRCUITS (VPWR)

ISC_GND

mA

500

–

900

CVREF

33

–

39

nF

PWROK Undervoltage Threshold on VDDL, FBL Ramps Down

VPWR = KA_VPWR = 14 V, IVDDH = 200 mA

VFBL(THL)

V

2.1

2.4

2.5

PWROK Undervoltage Threshold on VDDH

VPWR = KA_VPWR = 14 V, IVDDH = 200 mA

VDDH(THL)

V

4.5

–

4.8

VDDH Overvoltage Threshold

VPWR = KA_VPWR = 10 V, IVDDH = 200 mA

VDDH(THH)

5.12

–

V

5.7

PWROK Open Drain On-Resistance

VPWR = KA_VPWR = 14 V, EN = 5 V, IPwrOK = 5.0 mA

RDS(ON)

–

Ω

–

200

VKAMOK Threshold,

VPWR = KA_VPWR = 14 V, IVDDH = 200 mA

VKAM(THL)

V

2.1

2.4

2.5

VKAMOK Threshold on VPWR, VPWR Ramps Up

KA_VPWR = 14 V, IVDDH = 200 mA

VPWROK(TH)

V

4.0

–

5.0

VKAMOK Open Drain On-Resistance

VPWR = KA_VPWR = 14 V, EN = 0 V, IVKAMOK = 10 mA

RDS(ON)

50

Ω

–

200

Enable Input Voltage Threshold (Pin EN)

Enable Pull-Down Current (Pin EN), EN = 1.0 V VDDH to VIL(MIN)

Sensor Enable Input Voltage Threshold (Pin SNSEN)

Sensor Enable Pull-Down Current (Pin SNSEN)

SNSEN = 1.0 V VDDH to VIL(MIN)

VIH

1.0

–

2.0

V

IPD

500

–

1200

nA

VIH

1.0

–

2.0

V

IPD

nA

500

–

1200

Notes

13. Recommended value.

33998

9

Analog Integrated Circuit Device Data

Freescale Semiconductor

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