ST L6375 User Manual

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0.5A INDUSTRIAL INTELLIGENT POWER SWITCH

■

0.5A OUTPUT CURRENT

■ 8V TO 35V SUPPLY VOLTAGE RANGE

■

NON DISSIPATIVE SHORT CIRCUIT
PROTECTION

■ THERMAL SHUTDOWN

■

OPEN GROUND PROTECTION

■

NEGATIVE VOLTAGE CLAMPING FOR FAST
DEMAGNETIZATION

■ UNDERVOLTAGE LOCKOUT WITH

HYSTERESIS

■

OPEN LOAD DETECTION

■ TWO DIAGNOSTIC OUTPUTS

■

OUTPUT STATUS LED DRIVER

■

IMMUNITY AGAINST BURST TRANSIENT
(IEC 801-4), see application schematic.

■

ESD PROTECTION (HUMAN BODYMODEL
±2KV)

L6375

PRELIMINARY DATA

MULTIPOWERBCD TECHNOLOGY

SO20 MINIDIP

ORDERING NUMBERS:

L6375D L6375

DESCRIPTION

The L6375 is a monolithic fully protected, full diag­nostic 0.5A Intelligent Power Switch. it is designed to
drive any kind of R-L-C load with controlled output
voltage slew rate and non dissipative short circuit
protection. An internal Clamping Diode enables the
fast demagnetization of inductive loads. Diagnostic
for CPU feedbackand extensive use of electrical pro­tections make this device extremely rugged and spe­cially suitable for industrial automation applications.

BLOCK DIAGRAM

V

S

UNDER

VOLTAGE

INPUT

1.4V

OSC

THERMAL

PROTECTION

+

-

NON DISSIPATIVE

SHORT CIRCUIT

OUTSTATUS

3mA

OUTPUT STATUS

IN+

IN-

Con

February 2000

This ispreliminary information ona new product now in development or undergoing evaluation. Details are subject to change without notice.

CHARGE

PUMP

DRIVER

CURRENT

LIMITATION

OPEN LOAD
DETECTION

DIAGNOSTIC

OUT

DIAG1

DIAG2

D95IN208B

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L6375

PIN FUNCTION (Pin numbering referred to Minidip package)

N° Pin Description

1 GND Ground
2 OUT High side output. Controlled output with current limitation
3 Vs Supply voltage input. Range with under voltage monitoring
4 OUTPUT STATUS Led driver to signal thestatus of the output pin. The pin is active ( sources current )

5 DIAG1 Diagnostic 1 output. This open drain reports the IC working conditions. (See

6 DIAG2 Diagnostic 2 output. This open drain reports the IC working conditions. (See

7 IN+ Comparator non inverting input
8 ON DELAY Delay setting for overcurrent diagnostic

when the outputis considered high. (See fig. 1)

Diagnostic truth table)

Diagnostic truth table)

PIN CONNECTION (Top view)

GND

OUTPUT

V

OUTPUT STATUS

1
2

MINIDIP

3

S

4 DIAG2

ON DELAY8
INPUT +

7

DIAG1

6
5

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N.C.

GND

N.C.

OUTPUT

N.C.

V

S

N.C.
N.C.
N.C. N.C.

OUTPUT STATUS N.C.

2
3
4
5
6
7
8
9
10

SO20

20
19
18
17
16
15
14
13
12
11

N.C.1
ON DELAY
N.C.
INPUT+
N.C.
DIAG1
DIAG2
N.C.

L6375

ABSOLUTEMAXIMUM RATINGS

Symbol Pin Parameter Value Unit

V

s

V

s

Vs -Vout

Vod

od

I

Iout

Vout

Ptot

diag

V

diag

I

Ii

V

i

T

op

3 Supply Voltage (tw < 10 ms) 50 V
3 Supply Voltage (DC) 40 V

3 vs 2 Supply to Output Differential voltage internally limited

5 Externally Forced Voltage -0.3 to 7 V
5 Externally Forced Current ±1mA
2 Output Current (see also Isc) internally limited
2 Output Voltage internally limited V

Power Dissipation internally limited

5.6 External voltage -0.3 to 40 V

5.6 Externally forced current -10 to 10 mA
7 Input Current 20 mA
7 Input Voltage -10 to Vs+0.3 V

Ambient temperature, operating range -25 to 85 °C

(Pin numbering referred to Minidip package)

T

Tstg

E

j

I

Junction temperature, operating range
(see Overtemperature Protection)

Storage temperature -55 to 150 °C
Energy Induct. Load TJ=85°C 200 mJ

-25 to 125 °C

THERMAL DATA

Symbol Parameter Minidip SO20 Unit

R

th j-case

R

th j-amb

Thermal Resistance Junction to Case Max. °C/W
Thermal Resistance Junction to Ambient Max. 100 90 °C/W

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L6375

ELECTRICAL CHARACTERISTCS

(VS=24V;Tj= –25 to +125°C, unless otherwise specified; pin numbering referred to Minidip package)

Symbol Pin Parameter Test Condition Min. Typ. Max. Unit

smin

V

V
Vsth1
Vsth2

Vshys

I

Iqo

Vith

V

iths

Vil

Vih
V

Iib

Idch

3 Supply Voltage for Valid

Diagnostic

3 Operative Supply Voltage 8 24 35 V

s

3 Undervoltage Threshold 1 (See fig. 2) 7 7.5 8 V
3 Undervoltage Threshold 2 (See fig. 2) 6.5 7 7.5 V
3 Under Voltage Hysteresis 300 500 700 mV
3 Quiescent Current Output Open 800 µA

q

3 Quiescent Current Output On 1.6 mA
7 Input Threshold Voltage 0.8 1.3 2 V
7 Input Threshold Hysteresis 50 400 mV
7 Input Low Level Voltage -7 0.8 V
7 Input High LevelVoltage Vs< 18V 2 V
7 Input High LevelVoltage Vs> 18V 2 15 V

ih

7 Input Bias Current Vi= -7 to 15V -250 250
5 Delay Capacitor Charging

Current

diag

I

= >0.5mA;V

ON DELAYpin shorted to
Ground

diag = 1.5V;

435V

s -3 V

A

µ

2.5 µA

Vdon

Iolk

Vol

cl

V

Isc

old

I

Voth1

Voth2

Vohys

Iosd

Output Voltage Drop

2 Output Leakage Current Vi= LOW; V
2 Output Low State Voltage Vi = HIGH; pin floating 0.8 1.5 V
2 Internal Voltage Clamp (Vs-V

2 Short Circuit Output Current
2 Open Load Detection Current Vi=Vih;T

5.6 Output Status Threshold 1
Voltage

5.6 Output Status Threshold 2
Voltage

5.6 Output Status Threshold
Hysteresis

5.6 Output Status Source Current V

I

= 500mA Tj=25°C

out

= 125°C

T

j

I

= 625mA T

out

= 125°C

T

j

)

o = 200mA

I

out

single pulsed =300µs

= 8 to 35V; Rl=2

V

s

(See fig. 1) 4.5 5 5.5 V

(See fig. 1) 4 4.5 5 V

(See fig. 1) 300 500 700 mV

out >Voth1 ;Vos = 2.5V 24mA

=25°C

j

=0 100 µA

out

48 53 58 V

Ω;

= 0 to +85°C136mA

amb

0.75 1.1 1.5 A

200
320
250
400

280
440
350
550

mV
mV
mV
mV

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