L6370QTR STMicroelectronics, L6370QTR Datasheet

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L6370QTR

Manufacturer Part Number
L6370QTR
Description
Power Switch ICs - Power Distribution 2.5A Single Highside 9.5 to 35V Smart PWR
Manufacturer
STMicroelectronics
Datasheet

Specifications of L6370QTR

Product Category
Power Switch ICs - Power Distribution
On Resistance (max)
100 mOhms
Operating Supply Voltage
9.5 V to 35 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN-48
Minimum Operating Temperature
- 25 C
Switch Current (max)
20 mA

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Quantity
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Part Number:
L6370QTR
Manufacturer:
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Part Number:
L6370QTR
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Features
Table 1.
October 2011
L6370Q
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 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 (IEC61000-4-
4)
ESD protection (human body model ±2kV)
Type
Part number
L6370QTR
Device summary
L6370Q
V
Vs-50 V
demag
RDSon
0.1
Ω
2.5 A
Iout
2.5 A single high-side smart power switch
S
Doc ID 022313 Rev 1
VFQFPN 7x7x1 48L
- 50 V
50 V
Vs
Package
Applications
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.
Programmable logic control
Industrial PC peripheral input/output
Numerical control machines
Drivers for all type of loads (resistive,
capacitive, inductive load)
(7 x 7 mm)
QFN-48
Tape and reel
Packaging
Tube
L6370Q
www.st.com
1/16
16

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L6370QTR Summary of contents

Page 1

... Protection against and surge transient (IEC61000-4-5) ■ Immunity against burst transient (IEC61000-4- 4) ■ ESD protection (human body model ±2kV) Table 1. Device summary Part number L6370Q L6370QTR October 2011 2.5 A single high-side smart power switch Iout Vs Ω 2 Applications ■ Programmable logic control - 50 V ■ ...

Page 2

Contents Contents 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Pin ...

Page 3

L6370Q 1 Block diagram and pin description Figure 1. Block diagram IN+ IN- ON-DELAY Figure 2. Pin connection (top view) UNDER VOLTAGE INPUT + - 1.4V NON DISSIPATIVE SHORT CIRCUIT OSC OUTSTATUS THERMAL PROTECTION 3mA OUTPUT STATUS Doc ID 022313 ...

Page 4

Block diagram and pin description 1.1 Pin description Table 2. Pin description ° Pin N Name 1 OUTPUT 2 OUTPUT ON-DELAY OUTPUT ...

Page 5

L6370Q Table 2. Pin description (continued) ° Pin N Name 29 DIAG2 IN OUTSTATUS GND ...

Page 6

Electrical specifications 2 Electrical specifications 2.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Vs Supply voltage (Tw<10ms) Vs-Vo Supply to output differential voltage. See also Vcl Vod Externally forced voltage Iod Externally forced current Vin Input voltage Vi ...

Page 7

L6370Q 2.3 Electrical characteristics ( –25 to +125°C, unless otherwise specified Table 5. Electrical characteristics Symbol Parameter Supply voltage for valid V smin diagnostics V Supply voltage (operative) s Quiescent current I q ...

Page 8

Electrical specifications Table 5. Electrical characteristics (continued) Symbol Parameter Output status threshold 1 V oth1 voltage Output status threshold 2 V oth2 voltage Output status threshold V ohys hysteresis I Output status source current osd Active output status driver drop ...

Page 9

L6370Q 3 Circuit description Figure 3. Output status hysteresis Figure 4. Undervoltage comparator hysteresis Figure 5. Switching waveforms out V ohys V oth2 V oth1 V sth3 V sth2 V sth1 50 90% 50% 10% ...

Page 10

Circuit description 3.1 Diagnostic truth table Table 7. Diagnostic truth table Diagnostic conditions Normal operation Open load condition (I Short Short circuit to ground (I (pin ON-DELAY grounded) Output DMOS open Overtemperature Supply undervoltage ( ...

Page 11

L6370Q 3.4 Short circuit operation In order to minimize the power dissipation when the output is shorted to grounded, an innovative, non dissipative short circuit protection (patent pending) is implemented, avoiding, thus the intervention of the thermal protection in most ...

Page 12

Circuit description The hysteresis (see a superimposed ripple. The under voltage status is signalled via the DIAG1 and DIAG2 outputs (see the Diagnostic Truth 3.7 Demagnetization of inductive loads An internal zener diode, limiting the voltage across the Power MOS ...

Page 13

L6370Q 4 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® ...

Page 14

Package mechanical data Figure 8. VFQFPN48 ( 1.0 mm) package mechanical drawing 14/16 Doc ID 022313 Rev 1 L6370Q ...

Page 15

L6370Q 5 Revision history Table 9. Document revision history Date 04-Oct-2011 Revision 1 Initial release. Doc ID 022313 Rev 1 Revision history Changes 15/16 ...

Page 16

... 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. ...

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