MOTOROLA 33981 Technical data

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MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Preliminary Information

High-Frequency, High-Current, Self-Protected High-Side Switch

Document order number: MC33981

Rev 2.0, 10/2004

33981

(4.0 mΩ up to 60 kHz)

The 33981 is a high-frequency, self-protected 4.0 mΩ R

switch used to replace electromechanical relays, fuses, and discrete devices in power management applications.

The 33981 can be controlled by pulse-width modulation (PWM) with a frequency up to 60 kHz. It is designed for harsh environments, and it includes self-recovery features. The 33981 is suitable for loads with high inrush current, as well as motors and all types of resistive and inductive loads.

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The 33981 is packaged in a 12 x 12 nonleaded power-enhanced Power QFN package with exposed tabs.

Features

• Single 4.0 mΩ R

• PWM Capability up to 60 kHz with Duty Cycle from 5% to 100%

• Very Low Standby Current

• Slew Rate Control with External Capacitor

• Overcurrent and Overtemperature Protection, Undervoltage Shutdown and Fault Reporting

• Reverse Battery Protection

• Gate Drive Signal for External Low-Side N-Channel MOSFET with Protection Features

• Output Current Monitoring

• Temperature Feedback

Maximum High-Side Switch

DS(ON)

33981 Simplified Application Diagram

DS(ON)

high-side

Device

PC33981PNA/R2

Simplified Application Diagram

HIGH-SIDE SWITCH

4.0 mΩ

Bottom View

PNA SUFFIX

SCALE 1:1

CASE 1402-02

16-TERMINAL PQFN (12 X 12)

ORDERING INFORMATION

Temperature

Range (T

-40°C to 125°C

)

A

Package

16 PQFN

V

DD

V

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I/O I/O

I/O

MCU

I/O A/D A/D

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

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DD

SR

CONF FS

INLS EN INHS TEMP CSNS

33981

V

C

V

PWR

BOOT

OUT

DLS

GLS

GNDOCLS

M

TEMP

Temperature

Feedback

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Undervoltage

Detection

Bootstrap Supply

V

PWR

C

BOOT

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SR

FS

EN

INHS

INLS

CONF

5.0 V

I

CONF

R

DWN

Slew Rate Control

Logic

I

DWN

Cross-

Conduction

Figure 1. 33981 Simplified Internal Block Diagram

Current Protection

100 A

Overtemperature

Detection

GND

Gate Driver

OUT Current

Recopy

1/20000

5.0 V

CSNS

Low-Side

Gate Driver

and Protection

I

OCLS

OUT

GLS

DLS

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33981 MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 2

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Transparent Top View of Package

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CSNS TEMP

EN

INHS

FS

INLS CONF

OCLS

DLS GLS

SR

C

BOOT

TERMINAL DEFINITIONS

Functional descriptions of some of these terminals can be found in the System /Application Information section beginning on

page 19

.

Terminal

1 CSNS Output Current Monitoring This terminal is used to output a current proportional to the high-side OUT current and

2 TEMP Temperature Feedback This terminal reports an analog value proportional to the temperature of the GND flag

3

4 INHS Serial Input High Side The input terminal is used to directly control the OUT. This input has an active internal

5

6 INLS Serial Input Low Side The input terminal is used to directly control an external low-side N-channel MOSFET

Terminal

Name

EN

FS

Formal Name Definition

Enable

(Active High)

Fault Status (Active Low)

1 2 3

4 5

13

6

GND

7 8 9 10 11

12

is used externally to generate a ground-referenced voltage for the microcontroller (MCU) to monitor OUT current.

(terminal 13). It is used by the MCU to monitor board temperature.

This is an input used to place the device in a low current sleep mode. This terminal has an passive internal pulldown.

pulldown current source and requires CMOS logic levels.

This is an open drain-configured output requiring an external pull-up resistor to V

(5.0 V) for fault reporting. When a device fault condition is detected, this terminal

DD

is active LOW.

and has an active internal pulldown current source and requires CMOS logic levels. It can be controlled independently of the INHS depending of CONF terminal.

V

14

PWR

16

15

OUT

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7 CONF Configuration Input This input terminal is used to manage the cross-conduction between the internal high-

8 OCLS Low-Side Overload This terminal sets the V

9 DLS Drain Low Side This terminal is the drain of the external low-side N-channel MOSFET. Its monitoring

10 GLS Low-Side Gate This terminal is an output used to drive the gate of the external low-side N-channel

11 SR Slew Rate Control A capacitor connected between this terminal and the ground is used to control the

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33981

side N-channel MOSFET and the external low-side N-channel MOSFET. The terminal has an active internal pullup current source. When CONF is at 0 V, the two MOSFETs are controlled independently. When CONF is at 5.0 V, the two MOSFETs cannot be on at the same time.

protection level of the external low-side MOSFET. This

terminal has an active internal pullup current source. It must be connected to an external resistor.

allows for protection features.

MOSFET.

output slew rate.

DS

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TERMINAL DEFINITIONS (continued)

Functional descriptions of some of these terminals can be found in the System /Application Information section beginning on

page 19

.

Terminal

14 V

15, 16 OUT Output Protected high-side power output to the load. Output terminals must be connected in

Terminal

Name

PWR

Formal Name Definition

Positive Power Supply This terminal connects to the positive power supply and is the source input of

operational power for the device. The V of the package.

parallel for operation.

terminal is a backside surface mount tab

PWR

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33981 MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 4

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MAXIMUM RATINGS All voltages are with respect to ground unless otherwise noted.

Rating Symbol Value Unit

ELECTRICAL RATINGS

Power Supply Voltage

Steady-State

V

PWR

V

-16 to 41

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Input/Output Terminals Voltage (Note 1) V

Output Voltage V

Continuous Output Current (Note 2) I

CSNS Input Clamp Current I

SR Voltage V

Temperature Feedback Voltage V

Voltage

C

BOOT

OCLS Voltage V

Low-Side Gate Voltage V

Low-Side Drain Voltage V

ESD Voltage

Human Body Model (Note 3)

Machine Model (Note 4)

Output Clamp Energy (Note 5) E

CSNS

C

BOOT

OCLS

V

ESD1

V

ESD2

IN

OUT

SR

TEMP

GLS

DLS

CL

-0.3 to 7.0 V

-5.0 to 41 V

40 A

10 mA

-0.3 to 54 V

-0.3 to 5.0 V

-0.3 to 54 V

-0.3 to 7.0 V

-0.3 to 15 V

-5.0 to 41 V

±2000

±200

TBD J

THERMAL RATINGS

Operating Temperature

Ambient

Junction

Storage Temperature T

Thermal Resistance (Note 6)

Junction to Power Die Case

Junction to Ambient

Peak Terminal Reflow Temperature During Solder Mounting (Note 7) T

Power Dissipation (TA = 25°C) (Note 8) P

Notes

1. Exceeding voltage limits on INHS, INLS, CONF, CSNS, device.

2. Continuous high-side output rating as long as maximum junction temperature is not exceeded. Calculation of maximum output current using package thermal resistance is required.

3. ESD1 testing is performed in accordance with the Human Body Model (C

4. ESD2 testing is performed in accordance with the Machine Model (C

specification with a capacitor > 0.01 µF connected from OUT to GND.

5. Active clamp energy using single-pulse method (L = 16 mH, R

6. Device mounted on a 2s2p test board per JEDEC JESD51-2.

7. Terminal soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may cause malfunction or permanent damage to the device.

8. Maximum power dissipation at indicated ambient temperature in free air with no heatsink used.

FS, TEMP, and EN terminals may cause a malfunction or permanent damage to the

ZAP

= 0, V

PWR

L

T

A

T

J

STG

R

JC

θ

R

JA

θ

SOLDER

D

= 100 pF, R

ZAP

= 200 pF, R

= 12 V, TJ = 150°C).

= 0 Ω) and in accordance with the system module

ZAP

= 1500 Ω).

ZAP

-40 to 125

-40 to 150

-55 to 150

°C/W

1.0

20

240 °C

TBD W

°C

V

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33981

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STATIC ELECTRICAL CHARACTERISTICS

Characteristics noted under conditions 4.5 V ≤ VDD≤ 5.5 V, 6.0 V ≤ V

≤ 27 V, -40°C ≤ TJ≤ 150°C unless otherwise noted.

PWR

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

Characteristic Symbol Min Typ Max Unit

POWER INPUT

Battery Supply Voltage Range

Fully Operational

Extended

V

PWR

6.0

4.5

–

27

V

Supply Current

V

PWR

Output ON, I

Supply Current

V

PWR

Output OFF, EN = 5.0 V, OUT Connected to GND

Sleep State Supply Current (V

T

= 25°C

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J

= 125°C

T

J

Undervoltage Shutdown V

Undervoltage Hysteresis V

OUT

= 0 A

< 14 V, EN = 0V)

PWR

POWER OUTPUT

Output Drain-to-Source ON Resistance (I

= 6.0 V

V

PWR

= 10.0 V

V

PWR

= 13 V

V

PWR

Output Drain-to-Source ON Resistance (I

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Output Drain-to-Source ON Resistance

V

PWR

= 6.0 V

= 9.0 V

= 13 V

= - 13 V

= 20 A, TJ = 25°C)

OUT

= 20 A, TJ = 150°C)

OUT

(I

= 20 A, TJ = 25°C)

OUT

I

PWR(ON)

I

PWR(SBY)

I

PWR(SLEEP)

PWR(UV)

PWR(UVHYS)

R

DS(ON)

R

DS(ON)

R

DS(ON)

mA

––10

mA

––10

µA

–

2.0 – 4.0 V

–0.3–V

–

––8.0

–

5.0

50

mΩ

6.0

5.0

4.0

mΩ

10.2

8.5

6.8

mΩ

Output Overcurrent Detection Level I

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Current Sense Ratio

Fr

9.0 V <

V

< 16 V, CNS < 4.5V

PWR

Current Sense Ratio (C

Output Current

5.0 A

10 A

30 A

Current Sense Voltage Clamp

I

= 15 mA

CCNS

33981 MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 6

) Accuracy

SR

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OCH

C

SR

C

SR_ACC

V

CL(CSNS)

– – 100 A

– 1/20000 –

-20

-14

-12

4.5 6.0 7.0

–

20

14

12

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–

%

V

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STATIC ELECTRICAL CHARACTERISTICS (continued)

Characteristics noted under conditions 4.5 V ≤ V

≤ 5.5V, 6.0V≤ V

DD

Typical values noted reflect the approximate parameter mean at T

Characteristic Symbol Min Typ Max Unit

A

≤ 27 V, -40°C ≤ TJ≤ 150°C unless otherwise noted.

PWR

= 25°C under nominal conditions unless otherwise noted.

POWER OUTPUT (continued)

Overtemperature Shutdown T

Overtemperature Shutdown Hysteresis (Note 9) T

Low-Side Gate

V

= 6.0 V

PWR

= 9.0 V

V

PWR

= 13 V

V

PWR

= 27 V

V

PWR

SD

SD(HYS)

V

GSLS

160 175 190 °C

5.0 – 20

–

6.0

9.0

12

°C

V

–

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Low-Side Gate Current

C = 4.7 nF

Low-Side Overload Detection Level versus Low-Side Drain Voltage

V

- V

OCLS

DLS

Temperature Feedback

= 25°C

T

J

Temperature Feedback Derating DT

I

GSLS

V

DS_LS

T

Feed

CONTROL INTERFACE

Input Logic High Voltage (Note 10) V

Input Logic Low Voltage (Note 10) V

Input Logic Voltage Hysteresis (Note 10) V

Input Logic Active Pulldown Current (INHS, INLS) I

Input Logic Pulldown Resistor (EN)

Input Active Pullup Current (OCLS)

Input Active Pullup Current (CONF) I

FS Tri-State Capacitance (Note 9)

FS Low-State Output Voltage

Notes

9. Parameter is guaranteed by process monitoring but is not production tested.

10. Upper and lower logic threshold voltage range applies to EN, CONF, INHS, and INLS input signals.

IH

IL

IN(HYS)

DWN

R

DWN

I

OCLS

CONF

C

SO

V

SOL

p

mA

–100–

mV

––50

V

TBD 4.75 TBD

–-12–mV/°C

0.7 – – V

– – 0.2 V

100 350 750 mV

5.0 – 20 µA

100 200 400 kΩ

–100–µA

–10–µA

– – 20 pF

–0.20.4V

DD

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33981

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DYNAMIC ELECTRICAL CHARACTERISTICS

Characteristics noted under conditions 4.5 V ≤ VDD≤ 5.5 V, 6.0 V ≤ V Typical values noted reflect the approximate parameter mean at TA = 25°C under nominal conditions unless otherwise noted.

Characteristic Symbol Min Typ Max Unit

CONTROL INTERFACE AND POWER OUTPUT TIMING

C

Charge Blanking Time (Note 11)

BOOT

≤ 27 V, -40°C ≤ TJ≤ 150°C unless otherwise noted.

PWR

t

ON

– 20 – µs

Output Rising Slew Rate (Note 12)

V

= 14 V

PWR

= 6.8 nF, from 10% to 90% of V

C

GATE

Output Falling Slew Rate (Note 12)

V

= 14 V

PWR

= 6.8 nF, from 90% to 10% of V

C

GATE

Output Turn-ON Delay Time (Note 13)

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Output Turn-OFF Delay Time

Input Switching Frequency (Note 14) f

, I

Notes

or

11. Refer to the paragraph entitled Sleep Mode

12. Parameter is guaranteed by process monitoring but is not production tested.

13. Turn-ON delay time measured from rising edge of INHS that turns the output ON to V

14. Turn-OFF delay time measured from falling edge of INHS that turns the output OFF to V

SR Capacitor = 4.7 nF

OUT,

SR Capacitor = 4.7 nF

OUT,

on page 19.

SR

t

DLY(ON)

t

DLY(OFF)

PWM

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R

–

F

–

– 200 – ns

– 400 – ns

– – 60 kHz

= 0.5 V with RL= 5.0 Ω resistive load.

OUT

= V

OUT

PWR

25

–

25

–

-0.5 V with RL= 5.0 Ω resistive load.

–

V/µs

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33981 MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 8

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