ST L6375 User Manual

L6375

L6375

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

PRELIMINARY DATA

MULTIPOWER BCD TECHNOLOGY

SO20	MINIDIP
ORDERING NUMBERS:
L6375D	L6375

■OPEN LOAD DETECTION

■TWO DIAGNOSTIC OUTPUTS

■OUTPUT STATUS LED DRIVER

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

■ESD PROTECTION (HUMAN BODY MODEL

±2KV)

BLOCK DIAGRAM

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 feedback and extensive use of electrical protections make this device extremely rugged and specially suitable for industrial automation applications.

			VS
		UNDER	CHARGE
		VOLTAGE	PUMP
	IN+	INPUT
		+	DRIVER
	IN-	-
		1.4V	OUT
		NON DISSIPATIVE	CURRENT
		SHORT CIRCUIT	LIMITATION
	Con	OSC	OPEN LOAD
			DETECTION
		OUTSTATUS	DIAG1
		THERMAL	DIAGNOSTIC
		PROTECTION
			DIAG2
		3mA
		OUTPUT STATUS	D95IN208B
	February 2000		1/12

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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 the status of the output pin. The pin is active ( sources current )
		when the output is considered high. (See fig. 1)
5	DIAG1	Diagnostic 1 output. This open drain reports the IC working conditions.	(See
		Diagnostic truth table)
6	DIAG2	Diagnostic 2 output. This open drain reports the IC working conditions.	(See
		Diagnostic truth table)
7	IN+	Comparator non inverting input
8	ON DELAY	Delay setting for overcurrent diagnostic

PIN CONNECTION (Top view)

	GND	1		8	ON DELAY
	OUTPUT	2	MINIDIP	7	INPUT +
	VS	3		6	DIAG1
	OUTPUT STATUS	4		5	DIAG2

N.C.	1	20	N.C.
GND	2	19	ON DELAY
N.C.	3	18	N.C.
OUTPUT	4	17	INPUT+
N.C.	5	SO20 16	N.C.
VS	6	15	DIAG1
N.C.	7	14	DIAG2
N.C.	8	13	N.C.
N.C.	9	12	N.C.
OUTPUT STATUS	10	11	N.C.

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				L6375
ABSOLUTE MAXIMUM RATINGS (Pin numbering referred to Minidip package)
Symbol	Pin	Parameter	Value	Unit
Vs	3	Supply Voltage (tw < 10 ms)	50	V
Vs	3	Supply Voltage (DC)	40	V
Vs -Vout	3 vs 2 Supply to Output Differential voltage		internally limited
Vod	5	Externally Forced Voltage	-0.3 to 7	V
Iod	5	Externally Forced Current	±1	mA
Iout	2	Output Current (see also Isc)	internally limited
Vout	2	Output Voltage	internally limited	V
Ptot		Power Dissipation	internally limited
Vdiag	5.6	External voltage	-0.3 to 40	V
Idiag	5.6	Externally forced current	-10 to 10	mA
Ii	7	Input Current	20	mA
Vi	7	Input Voltage	-10 to Vs +0.3	V
Top		Ambient temperature, operating range	-25 to 85	°C
Tj		Junction temperature, operating range	-25 to 125	°C
		(see Overtemperature Protection)
Tstg		Storage temperature	-55 to 150	°C
EI		Energy Induct. Load TJ = 85°C	200	mJ

THERMAL DATA

Symbol	Parameter		Minidip	SO20	Unit
Rth j-case	Thermal Resistance Junction to Case	Max.			°C/W
Rth j-amb	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
Vsmin	3	Supply Voltage for Valid	Idiag = >0.5mA;Vdiag = 1.5V;	4		35	V
		Diagnostic
Vs	3	Operative Supply Voltage		8	24	35	V
Vsth1	3	Undervoltage Threshold 1	(See fig. 2)	7	7.5	8	V
Vsth2	3	Undervoltage Threshold 2	(See fig. 2)	6.5	7	7.5	V
Vshys	3	Under Voltage Hysteresis		300	500	700	mV
Iq	3	Quiescent Current	Output Open		800		μA
Iqo	3	Quiescent Current	Output On		1.6		mA
Vith	7	Input Threshold Voltage		0.8	1.3	2	V
Viths	7	Input Threshold Hysteresis		50		400	mV
Vil	7	Input Low Level Voltage		-7		0.8	V
Vih	7	Input High Level Voltage	Vs< 18V	2		Vs -3	V
Vih	7	Input High Level Voltage	Vs> 18V	2		15	V
Iib	7	Input Bias Current	Vi = -7 to 15V	-250		250	μA
Idch	5	Delay Capacitor Charging	ON DELAY pin shorted to		2.5		μA
		Current	Ground
Vdon		Output Voltage Drop	°		200	280	mV
			Iout = 500mA Tj = 25 C		320	440	mV
			°
			Tj = 125 C		250	350	mV
			Iout = 625mA Tj = 25°C
			Tj = 125°C		400	550	mV
Iolk	2	Output Leakage Current	Vi = LOW; Vout=0			100	μA
Vol	2	Output Low State Voltage	Vi = HIGH; pin floating		0.8	1.5	V
Vcl	2	Internal Voltage Clamp (Vs-Vout)	Io = 200mA	48	53	58	V
			single pulsed =300μs
Isc	2	Short Circuit Output Current	Vs = 8 to 35V; Rl = 2Ω;	0.75	1.1	1.5	A
Iold	2	Open Load Detection Current	Vi = Vih; Tamb = 0 to +85°C	1	3	6	mA
Voth1	5.6	Output Status Threshold 1	(See fig. 1)	4.5	5	5.5	V
		Voltage
Voth2	5.6	Output Status Threshold 2	(See fig. 1)	4	4.5	5	V
		Voltage
Vohys	5.6	Output Status Threshold	(See fig. 1)	300	500	700	mV
		Hysteresis
Iosd	5.6	Output Status Source Current	Vout > Voth1 ; Vos = 2.5V	2		4	mA

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