ST L9348 User Manual

L9348

QUAD LOW SIDE DRIVER

■SUPPLY VOLTAGE RANGE: 4.8 TO 18V

■OUTPUT VOLTAGE UP TO 40V

■OUTPUT VOLTAGE CLAMP DURING RECIRCULATION OF INDUCTIVE LOADS

■OUTPUT CURRENT CAPABILITY 2 X 5A AND 2 X 3A

■LOW POWER DISSIPATION DURING RECIRCULATION OF INDUCTIVE LOADS BY INTEGRATED FREE WHEELING DIODES (3A-DRIVERS ONLY)

■LOW ON-RESISTANCE 2 X 0.2Ω , 2 X 0.35Ω (TYP.)

■OUTPUT SHORT CIRCUIT CURRENT PROTECTION

■REAL TIME DIAGNOSTIC FUNCTIONS

■OVERTEMPERATURE SHUTDOWN

■SIGNALAND POWER-GROUND-LOSS SHUTDOWN

PowerSO-36	BARE DIE
ORDERING NUMBERS:
L9348	L9348-DIE1

■3.3V CMOS COMPATIBLE INPUTS AND STATUS

DESCRIPTION

The L9348 is a monolithic integrated quad low side driver realized in advanced Multipower-BCD technology. It is intended to drive inductive loads (relays, electromagnetic valves) in automotive and industrial applications.

Figure 1. Block Diagram

	VS
	VS			Voltage Regulator
				+
				–	VREG
		VDD	VCC	=
		C 166kHz	EN	VS		Q1
		VDD
IN1					EN
		FAIL		≥1
		Diagnostic	OL
	VREG		SCP			PGND1
			TSD
ST1			GL
		PWRES			CHANNEL1
IN2		C 166kHz	EN		CHANNEL2	Q2
ST2		PWRES				PGND2
			VDD		VS
ENA		EN
			PWRES	PWRES	C 166kHz
		C 166kHz	EN			D3
		VDD		VS		Q3
IN3					EN
		FAIL		≥1
		Diagnostic	OL
	VREG		SCP			PGND3
			TSD
ST3			GL
			FB
		PWRES			CHANNEL3
IN4		C 166kHz	EN			D4
					CHANNEL4	Q4
ST4		PWRES
						PGND4
99AT0073		GND

5A - DRIVER

3A - DRIVER

March 2002

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L9348

Figure 2. Pin Connection

N.C.
			1	36			N.C.
PGND3			2	35			ST3
			3	34			IN1
Q3			4	33			IN3
			5	32			ST1
D3			6	31				PGND1
			7	30
Q1			8	29			N.C.
			9	28			VS
Q2			10	27			GND
			11	26				PGND2
D4			12	25
			13	24			ENA
Q4			14	23			ST2
			15	22			IN4
PGND4			16	21			IN2
			17	20			ST4
N.C.
			18	19			N.C.

99AT0074

Table 1. Pin Description

N°		Pin	Function
1, 18,		N.C.	(GND)
19,	36
2,	3	PGND3	Power Ground Channel 3
4,	5	Q3	Power Output Channel 3 (3A switch)
6,	7	D3	Recirculation Diode Channel 3
8,	9	Q1	Power Output Channel 1 (5A switch)
10,	11	Q2	Power Output Channel 2 (5A switch)
12,	13	D4	Recirculation Diode Channel 4
14,	15	Q4	Power Output Channel 4 (3A switch)
16,	17	PGND4	Power Ground Channel 4
20		ST4	Status Output Channel 4
21		IN2	Control Input Channel 2
22		IN4	Control Input Channel 4
23		ST2	Status Output Channel 2
24		ENA	Enable
25,	26	PGND2	Power Ground Channel 2
27		GND	Signal Ground
28		VS	Supply Voltage
29		N.C.	Not Connected
30,	31	PGND1	Power Output Channel 3
32		ST1	Status Output Channel 1
33		IN3	Control Input Channel 3
34		IN1	Control Input Channel 1

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							L9348
Table 2. Thermal Data
Symbol	Parameter	Test Conditions			Values		Unit
				Min.	Typ.	Max.
Tj	Junction temperature			-40		150	°C
Tjc	Junction temperature during	Σt = 30min				175	°C
	clamping (life time)	Σt = 15min				190	°C
Tstg	Storage temperature			-55		150	°C
Rth j-case	Thermal resistance junction to					2	°C/W
	case

Table 3. Absolute Maximum Ratings

The absolute maximum ratings are the limiting values for this device. Damage may occur if this device is subjected to conditions which are beyond these values.

Symbol	Parameter	Test Conditions	Value	Unit
Voltages
VS	Supply voltage range		-0.3 to 40	V
VQ, VD	max. static Output voltage		40	V
VIN, VEN	Input voltage range	|II | < 10mA	-1.5 to 6	V
	(IN1 to IN4, EN)
VST	Status output voltage range	|II | < 1mA	-0.3 to 6	V
VDRmax	max. Reverse breakdown	IR = 100 μA	55	V
	voltage free wheeling diodes
	D3, D4
Currents
IQ 1/2	Output current at reversal		-4	A
	supply for Q1, Q2
IQ 3/4	Output current at reversal		-2	A
	supply for Q3, Q4
IST	Status output current range		-1 to 1	mA
EQ1/2	max. Discharging energy for	Tj = 25°C	50	mJ
	inductive loads per channel
		Tj = 150°C	30	mJ
	Q1, Q2
IFDmax	max. load current free	t < 5ms	3	A
	wheeling diodes
ESD Protection
Supply and Signal pins		versus GND	±2	kV
Output pins (QX, DX)		versus common ground (=short of	±4	kV
		SGND with all PGND)

Note: Human Body Model according to MIL883C. The device withstands ST1 class level.

Table 4. Operating Range.

	Symbol	Parameter	Test Conditions		Values		Unit
				Min.	Typ.	Max.
	VS	Supply voltage		4.8		18	V
	Tj	Junction temperature		-40		150	°C

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L9348

Table 5. Electrical Characteristcs

The electrical characteristics are valid within the operating range (Table 4), unless otherwise specified

Symbol	Parameter		Test Condition	Min.	Typ.	Max.	Unit
Power Supply
IS	Supply current		VIN1...IN4, ENA = H			8	mA
IQ	Quiescent current (outputs OFF)		VENA = L			6	mA
ID3/4	Quiescent current at pins D3/4		VD3/4 £ 18V;	10		400	mA
			VIN3/4 = L
Diagnostic Functions
VQU1 to 4	Output open load voltage		VS ³ 6.5V	0.3	0.33	0.36	x VS
	threshold		VEN = X; VIN = L
IQU1 to 4	Output open load current		VS ³ 6.5V	50		140	mA
	threshold		VEN = H; VIN = H
IQO1/2	Overload current threshold Q 1, 2		VS ³ 6.5V	5	7.5	9	A
IQO3/4	Overload current threshold Q 3, 4		VS ³ 6.5V	3	5	8	A
Tth	Overtemperature shutdown		2)	175		210	°C
	threshold
Thy	Overtemperature hysteresis				10		°C
VthPGL	Power-GND-loss threshold			1.5	2.5	3.5	V
VthSGL	Signal-GND-loss threshold			150	330	510	mV
Power Outputs (Q1 to Q4)
RDSON1/2	Static drain-source ON-resistance		IQ = 1A; VS ³ 9.5V		0.2		W
	Q1, Q2		Tj = 25°C
			Tj = 125°C 3)			0.5	W
			Tj = 150°C 4)			0.5	W
RDSON3,4	Static drain-source ON-resistance		IQ = 1A; VS ³ 9.5V		0.35		Ω
	Q3, Q4		Tj = 25°C
			Tj = 125°C 3)			0.75	Ω
			Tj = 150°C 4)			0.75	Ω
VZ	Z-diode clamping voltage		IQ ³ 100mA,	45		60	V
	= threshold of flyback detection		pos. supply VD3/4
	Q3/4
VC	Clamping voltage		IQ ³ 100mA,	4		10	V
			neg. supply VD3/4
IPD	Output pull down current		VENA = H, VIN = L	10	20	50	mA

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