Document
L6370Q
2.5 A single high-side smart power switch
Features
Type L6370Q
Vdemag
Vs-50 V
RDSon
Iout 2.5 A
Vs 50 V
0.1 Ω
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
2.5 A output current 9.5 V to 35 V supply voltage range Internal current limiting Thermal shutdown Open ground protection Internal negative voltage clamping to VS - 50 V 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 Protection against and surge transient (IEC61000-4-5) Immunity against burst transient (IEC61000-44) ESD protection (human body model ±2kV) Device summary
Part number L6370Q VFQFPN 7x7x1 48L L6370QTR Package
www.DataSheet.net/
QFN-48 (7 x 7 mm)
Applications
■ ■ ■ ■
Programmable logic control Industrial PC peripheral input/output Numerical control machines Drivers for all type of loads (resistive, capacitive, inductive load)
Description
The L6370 is a monolithic intelligent power switch in Multipower-BCD Technology, for driving inductive or resistive loads. 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.
Packaging Tube Tape and reel
October 2011
Doc ID 022313 Rev 1
1/16
www.st.com 16
Datasheet pdf - http://www.DataSheet4U.co.kr/
Contents
L6370Q
Contents
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 2.2 2.3 2.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 3.2 3.3 3.4 3.5 3.6 3.7 Diagnostic truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Input section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Diagnostic logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Short circuit operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Overtemperature protection (OVT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Undervoltage protection (UV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Demagnetization of inductive loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
www.DataSheet.net/
4 5
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16
Doc ID 022313 Rev 1
Datasheet pdf - http://www.DataSheet4U.co.kr/
L6370Q
Block diagram and pin description
1
Block diagram and pin description
Figure 1. Block diagram
VS UNDER VOLTAGE INPUT CHARGE PUMP
IN+ IN-
+ DRIVER OUT NON DISSIPATIVE SHORT CIRCUIT CURRENT LIMITATION OPEN LOAD DETECTION OUTSTATUS DIAG1 DIAGNOSTIC
1.4V
RSC
ON-DELAY
OSC
THERMAL PROTECTION DIAG2 3mA
OUTPUT STATUS
D95IN208D
Figure 2.
Pin connection (top view)
www.DataSheet.net/
28767$786
*1'
1&
1& 287387 287387 1& 21'(/$< 9V 9V 9V 9V 1& 287387 287387 1& 1&
Doc ID 022313 Rev 1
1& 1&
1& 1&
1& 1&
1& 1&
1& 1&
1& 1&
1& 1&
1&
1& 1& ,1 ,1 1& 1& 1& ',$* ',$* 1& 1& 1&
1&
1&
1&
56&
3/16
Datasheet pdf - http://www.DataSheet4U.co.kr/
Block diagram and pin description
L6370Q
1.1
Pin description
Table 2.
Pin N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Pin description
Name OUTPUT OUTPUT NC ON-DELAY VS VS VS VS NC OUTPUT OUTPUT NC NC NC NC NC NC NC NC NC NC RSC NC NC NC NC NC DIAG1 Description High side output with built-in current limitation High side output with built-in current limitation Not connected Programmable ON time interval duration during short circuit operation Supply voltage input, the value of the supply voltage is monitored to detect under voltage condition Supply voltage input, the value of the supply voltage is monitored to detect under voltage condition Supply voltage input, the value of the supply voltage is monitored to detect under voltage condition Supply voltage input, the value of t.