View L6375DTR_4438100.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

L6375D
0.5A high-side driver industrial intelligent power switch
Features

0.5A output current 8V to 35V supply voltage range Internal current limiting Thermal shutdown Open ground protection Internal negative voltage clamping for fast demagnetization Differential inputs with large common mode range and threshold hysteresis Undervoltage lockout with hysteresis Open load detection Two diagnostic outputs Output status LED driver Non dissipative short circuit protection Immunity against burst transient (IEC 61000-4-4) ESD protection (human body model 2kV)
SO20
Description
The L6375D is a monolithic Intelligent Power Switch in Multipower BCD Technology, for driving inductive or resistive loads with controlled output voltage slew rate and 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.
Table 1.
Device summary
Op. temp. range, C -25 to +125 -25 to +125 Package SO20 SO20 Packaging Tube Tape & Reel
Order codes L6375D L6375DTR
July 2007
Rev 1
1/16
www.st.com 16
Contents
L6375D
Contents
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Switching waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Input section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Over temperature protection (OVT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Under voltage protection (UV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Over current operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Diagnostic logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Demagnetization of inductive loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Diagnostic truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 4 5
Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16
L6375D
Block diagram and pin description
1
Block diagram and pin description
Figure 1. Block diagram
3/16
Block diagram and pin description Figure 2. Pin connection (top view)
L6375D
SO-8
1.1
Pin description
Table 2.
Pin N 2 4 6
Pin description
Pin name GND OUT VS Ground High Side output with built-in current limitation Supply Voltage Input, the value of the supply voltage is monitored to detect under voltage condition Function
10
This current source output is capable of driving a LED to signal the Output status status of the output pin. The pin is active (source current) when the output pin is considered high (See Figure 4) DIAG1 DIAG2 IN+ ON-DELAY N.C. DIAGNOSTIC 1 output. This open drain reports the IC working conditions. (See Diagnostic truth Table 7) DIAGNOSTIC 2 output. This open drain reports the IC working conditions. (See Diagnostic truth Table 7) Comparator inverting input Programmable ON time interval duration during short circuit operation Not connected
15 14 17 19 1, 3, 5, 7, 8, 9, 11, 12, 13, 16, 18, 20
4/16
L6375D
Electrical specifications
2
2.1
Electrical specifications
Absolute maximum ratings
Table 3.
Symbol
Vs Vs
Absolute maximum ratings
Parameter Supply voltage (tw < 10 ms) Supply voltage (DC) Supply to output differential voltage Externally forced voltage Externally forced current Output current (see also Isc) Output voltage Power dissipation External voltage Externally forced current Input current Input voltage Ambient temperature, operating range Junction temperature, operating range (see Overtemperature Protection) Storage temperature Energy inductive load TJ = 85C Value 50 40 internally limited -0.3 to 7 1 internally limited internally limited internally limited -0.3 to 40 -10 to 10 20 -10 to Vs +0.3 -25 to 85 -25 to 125 -55 to 150 200 Unit V V V V mA A V W V mA mA V C C C mJ
Vs -Vout Vod Iod Iout Vout PTOT Vdiag Idiag Ii
Vi Top TJ
TSTG EI
2.2
Thermal data
Table 4.
Symbol RthJA RthJP
Thermal data
Parameter Thermal resistance Junction-ambient Thermal resistance Junction-pins Max (1) Max Value 65 15 Unit C/W C/W
1. When mounted on a FR4 printed circuit board with 0.5 cm2 of Cu (at least 35mm thick)
5/16
Electrical specifications
L6375D
2.3
Electrical characteristics
Table 5.
Symbol Vsmin Vs Vsth1 Vsth2 Vshys Iq Iqo Vith Viths Vil Vih Vih Iib Idch
Electrical characteristics (VS = 24V; TJ = -25 to +125C, unless otherwise specified)
Parameter Supply voltage for valid diagnostic Operative supply voltage Undervoltage threshold 1 Undervoltage threshold 2 Under voltage hysteresis Quiescent current Quiescent current Input threshold voltage Input threshold hysteresis Input low level voltage Input high level voltage Input high level voltage Input bias current Delay capacitor charging current Vs < 18V Vs > 18V Vi = -7 to 15V ON DELAY pin shorted to Ground Iout = 500mA TJ = 25C TJ = 125C Iout =625mA TJ = 25C TJ= 125C Vi = LOW; Vout=0
Vi = HIGH; pin floating
Test condition Idiag = > 0.5mA; Vdiag = 1.5V;
Min 4 8 7 6.5 300
Typ
Max 35
Unit V V V V mV A mA
24 7.5 7 500 800 1.6
35 8 7.5 700
Output open Output ON 0.8 50 -7 2 2 -250
1.3
2 400 0.8 Vs - 3 15 250
V mV V V V mA mA
2.5 200 320 250 400 280 440 350 550 100 0.8 48 0.75 1 4.5 4 300 53 1.1 3 5 4.5 500 1.5 58 1.5 6 5.5 5 700 4
Vdon
Output voltage drop
mV mV mV mV A V V A mA V V mV mA
Iolk Vol Vcl Isc Iold Voth1 Voth2 Vohys Iosd
Output leakage current Output low state voltage Internal voltage clamp (Vs-Vout) Short circuit output current Open load detection current Output status threshold 1 voltage Output status threshold 2 voltage Output status threshold hysteresis Output status source current
Io = 200mA single pulsed = 300ms Vs = 8 to 35V; Rl = 2; Vi = Vih; TA= 0 to +85C
Vout > Voth1 ; Vos = 2.5V
2
6/16
L6375D
Electrical specifications
Table 6.
Symbol Vosd Ioslk Vdgl Idglk Tmax Thys
Electrical characteristics (VS = 24V; TJ = -25 to +125C, unless otherwise specified)
Parameter Test condition Min Typ Max 1.5 3 25 40 250 5 150 20 Unit V mA mV mV A C C
Active output status driver drop VS - VOS ; IOS = 2mA TA = 0 to +85C voltage Output status driver leakage current Diagnostic drop voltage Diagnostic leakage current Over temperature upper threshold Over temperature hysteresis Vout < Voth2 ; Vos = 0V VS = 18 to 35V D1 / D2 = L ; Idiag = 0.5mA D1 / D2 = L ; Idiag = 3mA D1 / D2 = H ; 0 < Vdg < Vs VS = 15.6 to 35V
AC operation (pin numbering referred to Minidip package) tr -tr td dV/dt tON tOFF fmax Rise or fall time Delay time Slew rate (rise and fall edge) On time during short circuit condition Off time during short circuit condition Maximum operating frequency 50pF < CDON< 2nF Vs = 24V; Rl =70 Rl to ground Vs = 24V; Rl =70 Rl to ground 7 20 5 1 1.28 64 25 15 s s V/s s/pF tON KHz
Source drain NDMOS diode Vf IfD trr tfr Forward on voltage Forward peak voltage Reverse recovery time Forward recovery time @ Ifsd = 625mA t = 10ms; d = 20% If= 625mA di/dt = 25A/ms 200 50 1 1.5 2 V A ns ns
7/16
Electrical specifications
L6375D
2.4
Switching waveform
Figure 3. Switching waveform
2.5
Input section
An Single ended Input TTL/CMOS compatible with wide voltage range and high noise immunity (thanks to a built in hysteresis) is available.
2.6
Over temperature protection (OVT)
An on-chip Over Temperature Protection provides an excellent protection of the device in extreme conditions. Whenever the temperature - measured on a central portion of the chip exceeds Tmax = 150oC (typical value) the device is shut off, and the DIAG2 output goes LOW. Normal operation is resumed as the chip temperature (normally after few seconds) falls below Tmax - Thys = 130oC (typical value). The hysteresis avoid thats an intermittent behaviour take place.
2.7
Under voltage protection (UV)
The supply voltage is expected to range from 8 to 35V. In this range the device operates correctly. To avoid any misfunctioning the supply voltage is continuously monitored to provide an under voltage protection. As Vs falls below Vsth-Vshys (typically 7.5 V, see fig.1) the output power MOS is switched off and DIAG1 and DIAG2 (see Diagnostic truth table). Normal operation is resumed as soon as Vs exceeds Vsth. The hysteretic behaviour prevents intermittent operation at low supply voltage.
8/16
L6375D
Electrical specifications
2.8
Over current operation
In order to implement a short circuit protection the output power MOS is driven in linear mode to limit the output current to the Isc (1.1A typical value). This condition (current limited to the Isc value) lasts for a Ton time interval, that can be set by means of a capacitor (Cdon) connected to the ON DELAY pin according to the following formula: Ton = 1.28 sec/pF for 50pF< Cdon < 2nF After the Ton interval has expired the output power MOS is switched off for the Toff time interval with: Toff = 64 *Ton. When also the Toff interval has expired, the out-put power MOS is switched ON. At this point in time two conditions may occur a) The overloadis still present, and then the output power MOS is again driven in linear mode (limiting the output current to ISC) for another TON, starting a new cycle, or the over load the overload condition is removed, and the output power MOS is no longer driven in linear mode. All these occurrences are presented on the DIAG2 pin (see fig 2).
b)
We call this unique feature Non Dissipative Short Circuit Protection and it ensures a very safe operation even in permanent overload conditions. Note that choosing the most appropriate value for the Ton interval (i.e. the value of the Cdon capacitor) a delay (the Ton itself) will prevent that a misleading Short Circuit information is presented on the DIAG2 output, when driving capacitive loads (that acts like short circuit in the very beginning) or Incandescent Lamp (a cold filament has a very low resistive value). The Non Dissipative Short Circuit Protection can be disabled (keeping Ton = 0 but with the output current still limited to Isc, and Diagnostic disabled) simply shorting to ground the the ON DELAY pin. Figure 4. Non dissipative short circuit protection operation
9/16
Electrical specifications
L6375D
2.9
Diagnostic logic
The operating conditions of the device are permanently monitored and the following occurrences are signalled via the DIAG1/DIAG2 open-drain output pins see diagnostic Truth Table.

Short Circuit versus ground. Short Circuit versus VS. Under Voltage(UV) Over Temperature (OVT) Open Load, if the output current is less than 3mA (typical value).
2.10
Demagnetization of inductive loads
An internal zener diode, limiting the voltage across the Power MOS to between 50 and 60V (Vcl), provides safe and fast demagnetization of inductive loads without external clamping devices. The maximum energy that can be absorbed from an inductive load is specified as 200mJ (at TJ = 85C)
2.11
Diagnostic truth table
Table 7. Diagnostic truth table
Diagnostic conditions Normal Operation Open Load Condition (Io< Iold) Short to VS Short Circuit to Ground (IO = ISC) (1) (pin ON-DELAY grounded) Output DMOS Open Overtemperature Supply Undervoltage (VS< Vsth2) Input L H L H L H H L L H L H L H Output L H L H H H X L L L L L L L Diag1 H H H L L L H H H L H H L L Diag2 H H H H H H H H H H L L L L
1. A cold lamp filament, or a capacitive load may activate the current limiting circuit of the IPS, when the IPS is initially turned on.
10/16
L6375D
Application circuits
3
Application circuits
Figure 5. Inductive load equivalent circuit
Figure 6.
External demagnetisation circuit (versus ground)
11/16
Application circuits Figure 7. External demagnetisation circuit (versus vs)
L6375D
Figure 8.
Application schematic
(IEC 61000-4-5)
(IEC 61000-4-6)
ON-DELAY
12/16
L6375D
Package mechanical data
4
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com
13/16
Package mechanical data Table 8.
Dim. Min A A1 B C D E e H h L K 10 0.25 0.4 2.35 0.1 0.33 0.23 12.6 7.4 1.27 10.65 0.75 1.27 0.394 0.010 0.016 Typ Max 2.65 0.3 0.51 0.32 13 7.6 Min 0.093 0.004 0.013 0.009 0.496 0.291 0.050 Typ
L6375D
SO20 mechanical data
mm inch Max 0.104 0.012 0.020 0.013 0.512 0.299
0.419 0.030 0.050
0 (min.)8 (max.)
Figure 9.
Package dimensions
14/16
L6375D
Revision history
5
Revision history
Table 9.
Date 24-Jul-2007
Revision history
Revision 1 Initial release Changes
15/16
L6375D
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
(c) 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com
16/16

▲Up To Search▲

Price & Availability of L6375DTR

	To Download L6375DTR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .