UNITRODE UC17131, UC17132, UC17133, UC27131, UC27132 Technical data

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UC17131

Smart Power Switch

FEATURES

300mA Continuous Output Current

Low Side or High Side Switch Configuration

8V to 65V Operation

Overload and Short Circuit Protection

Power Interruption Protection

+6V Regulated Voltage

2mA Quiescent Current

Programmable Overcurrent and Power Interruption Protection

1% to 30% Programmable Input Comparator Hysteresis (on UC37132)

Low and High Side Internal High Current Clamps When Driving Inductive Loads

UC17131/2/3

UC27131/2/3

UC37131/2/3

DESCRIPTION

The UC37131, UC37132 and UC37133 are a family of smart power switches which can drive resistive or inductive loads from the high side or low side.

The UC37132 is available in 14 pin (DIP), 16 pin (SOIC), or 20 pin (CLCC) packages and can accommodate both low side (load to VCC) or high side (load to GND) configurations. The UC37131 and UC37133 are exclusively for a low side or a high side configuration respectively and both are available in an 8 pin package. Both high side and low side configurations provide high current switching with low saturation voltages which can drive resistive or inductive loads.

The input to the switch is driven by a low voltage signal, typically 5V. Additionally, UC37132 features adjustable hysteresis. The output of the device can switch a load between 8V and 65V. Output current capability is 300mA continuous or 700mA peak.

The device also has inherent smart features that allow for programmable turn-on delay in enabling the output following startup. The same capacitor that specifies the turn-on delay is also used to program a VCC power interruption time. If VCC drops below a threshold for a time specified by this capacitor, the output is turned off and a new turn-on delay will be re-triggered. Similarly, if high current persists longer than the response delay, the output driver will operate in a very low duty cycle mode to protect the IC.

UC37132 BLOCK DIAGRAM

VREF

11

 

6V

7

VCC

 

PRE-REGULATOR

 

 

 

 

 

6V/8mA

 

 

 

 

 

 

 

 

 

6

CSH

 

 

 

 

5

LS

 

INPUT

 

 

 

 

IN

COMPARATOR

 

 

 

13

 

 

72V

 

 

 

 

 

 

 

 

 

TURN-ON/OFF

QOUT

 

 

 

 

4

HS

 

 

 

AND

 

 

 

 

 

 

1/2

 

SHORT CIRCUIT

 

 

 

 

PROTECTION

3

CSL

 

VREF

 

 

 

 

 

 

 

 

 

 

2

GND

 

12

9

10

 

 

 

HYST

LED

CDEL

 

 

 

 

 

 

 

UDG-98026

SLUS340 - APRIL 1999

 

 

 

 

UNITRODE UC17131, UC17132, UC17133, UC27131, UC27132 Technical data

UC17131/2/3

UC27131/2/3

UC37131/2/3

UC37131 BLOCK DIAGRAM

VREF

3

6V

 

8

VCC

PRE-REGULATOR

 

 

 

 

 

 

6V/8mA

 

 

 

 

 

 

 

 

 

7

LS

 

 

INPUT

 

 

 

IN

4

COMPARATOR

 

 

 

 

 

72V

 

 

 

 

 

 

 

 

HYST (FIXED) =

 

 

 

 

 

30%

 

 

 

 

 

 

TURN-ON/OFF

QOUT

 

 

 

 

 

 

 

 

 

AND

 

 

 

 

1/2

SHORT CIRCUIT

 

 

 

 

PROTECTION

6

CSL

 

 

VREF

 

 

 

 

 

 

 

 

 

5

GND

 

 

1

2

 

 

 

 

LED

CDEL

 

 

 

 

 

 

 

UDG-98059

UC37133 BLOCK DIAGRAM

VREF

3

 

6V

8

VCC

 

PRE-REGULATOR

 

 

 

 

 

6V/8mA

 

 

 

 

 

 

 

 

 

7

CSH

 

 

INPUT

 

 

 

IN

4

COMPARATOR

 

 

 

 

 

HYST (FIXED) =

 

72V

 

 

 

30%

 

 

 

 

 

 

 

QOUT

 

 

 

 

TURN-ON/OFF

6

HS

 

 

 

AND

 

 

 

 

 

 

 

1/2

SHORT CIRCUIT

 

 

 

 

PROTECTION

 

 

 

 

VREF

 

 

 

 

 

 

 

 

 

 

 

5

GND

 

 

1

2

 

 

 

 

LED

CDEL

 

 

 

 

 

 

 

UDG-98060

 

 

 

2

 

 

ABSOLUTE MAXIMUM RATINGS

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65V LS – HS (Clamped by internal circuitry) . . . . . . . . . . . . . . . 78V CSH, LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65V Output Current

Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mA Peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900mA Remaining Pin Voltages . . . . . . . . . . . . . . . . . . . . . –0.3V to 9V Storage Temperature . . . . . . . . . . . . . . . . . . . 65°C to +150°C Junction Temperature. . . . . . . . . . . . . . . . . . . –55°C to +150°C Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C

Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages.

PLCC-20 (Top View)

(for UCX7132)

L Packages

N/C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HS

CSH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CSL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

2

1

20

19

 

 

 

N/C

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

 

 

N/C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

 

 

N/C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

N/C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

9

 

 

 

10

11

12

 

13

 

 

 

HYST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VREF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CDEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIL-14 (Top View) (for UCX7132)

J, or N Packages

N/C

1

14

N/C

GND

2

13

IN

CSL

3

12

HYST

HS

4

11

VREF

LS

5

10

CDEL

CSH

6

9

LED

VCC

7

8

N/C

UC17131/2/3

UC27131/2/3

UC37131/2/3

CONNECTION DIAGRAMS

SOIC-16 (Top View)

(for UCX7132)

D Package

N/C

1

 

16

N/C

GND

 

 

 

IN

 

 

 

2

 

15

CSL

 

 

 

HYST

 

 

 

3

 

14

HS

 

 

 

VREF

 

 

 

4

 

13

LS

 

 

 

CDEL

 

 

 

5

 

12

CSH

 

 

 

LED

 

 

 

6

 

11

N/C

 

 

 

N/C

 

 

 

7

 

10

VCC

 

 

 

N/C

 

 

 

8

 

9

 

 

 

 

 

DIL-8, SOIC-8 (Top View)

 

 

(for UCX7131)

 

 

 

J, N, or D Packages

 

 

LED

1

8

VCC

CDEL

2

7

LS

VREF

3

6

CSL

IN

4

5

GND

DIL-8, SOIC-8 (Top View)

 

 

(for UCX7133)

 

 

 

J, N, or D Packages

 

 

LED

1

8

VCC

CDEL

2

7

CSH

VREF

3

6

HS

IN

4

5

GND

PRODUCT SELECTION TABLES

PART

 

PACKAGE

NUMBER

CONFIGURATIONS

PIN COUNT

UCX7131

Low Side Only

8

UCX7132

Low Side or High Side

14, 16, 20

UCX7133

High Side Only

8

PART

TEMPERATURE

AVAILABLE

NUMBER

RANGE

PACKAGES

UC1713X

–55°C to +125°C

J, L

UC2713X

–40°C to +85°C

D, N

UC3713X

0°C to +70°C

D, N

3

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