Constant Current Relay Driver
IFX52001
CCRD
Data Sheet
Rev.1.01, 2015-10-23
Standard Power
IFX52001
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
6
7
7
2
3
3.1
3.2
4
4.1
4.2
4.3
5
5.1
5.2
6
7
Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Green Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Data Sheet
2
Rev.1.01, 2015-10-23
IFX52001
1
Features
•
•
•
•
•
Overview
Reduces relay hold current to min. 40 mA
Functional at low supply voltage
Active freewheeling path using relay integrated freewheeling
resistor
Overtemperature protection
Green Product (RoHS compliant)
PG-DSO-8 (exposed pad)
Description
The IFX52001 is intended to drive relays with a constant current in order to reduce the coil current during relay
hold phase. For relay activation, the IC pass element works as an activated switch for a limited period of time.
After the activation time period has elapsed, the IC reduces the relay coil current to a lower constant value.
Different operation modes allow adequate functionality also at very low or very high supply voltage.
The IC is suited to operate with relay coil inductance, freewheeling resistor, operating voltage and
environment conditions as required in industrial applications. For more details please refer to the operation
range and electrical characteristics tables.
The qualification of this product is based on JEDEC JESD47 and may reference existing qualification results of
similar products. Such referencing is justified by the structural similarity of the products. The product is not
qualified and manufactured according to the requirements of Infineon Technologies with regard to
automotive and/or transportation applications. Infineon Technologies administrated a comprehensive
quality management system according to the latest version of the ISO9001 and ISO/TS 16949.
The most updated certificates of the aforesaid ISO9001 and ISO/TS 16949 are available on the Infineon
Technologies web page
http://www.infineon.com/cms/en/product/technology/quality/
Type
IFX52001
Data Sheet
Package
PG-DSO-8 (exposed pad)
3
Marking
IFX52001
Rev.1.01, 2015-10-23
IFX52001
Block Diagram
2
Block Diagram
A
Relay
Freewheeling
Resistor
R
L
R
F
L
R
Relay
Coil
S
IN
Constant Current
Relay Driver
Biasing
Bandgap
Fwd Ctrl
C
S
Driver
D
Delay
CGND
C
D
BlockDiagram.svg
B
Figure 1
Block Diagram and Simplified Application Circuit
Data Sheet
4
Rev.1.01, 2015-10-23
IFX52001
Pin Configuration
3
3.1
Pin Configuration
Pin Assignment
PG-DSO-8 (exposed pad)
S
n.c.
n.c.
D
1
2
3
4
8
7
6
5
Pinout.svg
IN
n.c.
n.c.
CGND
Figure 2
Pin Configuration
3.2
Pin
1
2, 3, 6, 7
4
5
8
Pin Definitions and Functions
Symbol Function
S
n.c.
D
CGND
IN
IC Supply; connect to relay coil freewheeling resistor according to
Figure 1.
Not Connected; connection to heat sink area and CGND recommended.
Delay; for generating the activation time length, connect a ceramic capacitor
between pin D and CGND.
Relay Coil Current Output and IC Ground;
Relay Coil Current Input;
connect to relay coil according to
Figure 1.
Exposed Pad;
interconnect with CGND and heat sink area on PCB.
Exposed Pad –
Data Sheet
5
Rev.1.01, 2015-10-23
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