Datasheet

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iC-JE

PWM RELAY/SOLENOID DRIVER

Rev G3, Page 1/11

FEATURES

• Wide operating voltage range of 10 to 45 Vdc

• PWM control for coil currents of 40 to 300 mA

• Coil current for energise and hold modes set by an external

resistor

• Coil current monitored during energise mode, detection of load

breakage and voltage errors

• Automatic current reduction after 100 ms to reduce the power

consumption in hold mode

• The internal free-wheeling alteration function supports PWM

operation and quick demagnetising during shutdown

• Status signalled at the current-limited LED output

• Shutdown with excessive temperature and low voltage

• Integrated oscillator needs no external components

• PWM frequency is beyond audible range

• Protective circuitry against damage by ESD

• Minimum space requirements, few external components

APPLICATIONS

• PWM drive for inductive loads

(e.g. relays, electrovalves)

• Relay low-/high-side switch

PACKAGES

SO8

BLOCK DIAGRAM

−

MUX

t = 25 us

15 V

HOLD

INI

ERR

1.2 V

x0.66

x1.0

INI

−

80 kHz

HOLD

PWMOK

OUT 7

VB 8

GND

3 IN

ISET

1 LED

GND

10...45 V

START

t >= 100 ms

2.4 Hz

OFF

RSET

10...60 kΩ

0.01...10 H

LOUT

iC−JE

CONTROL

PWM

DELAY

HOLD MODE

RESET

TURN−ON

THERMAL SHUTDOWN

LOW VOLTAGE

INPUT

REFERENCE

DRIVER OUTPUT

TURN−ON CURRENT

CONTROL

Summary of content (11 pages)

PAGE 1
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 1/11 FEATURES APPLICATIONS • Wide operating voltage range of 10 to 45 Vdc • PWM control for coil currents of 40 to 300 mA • Coil current for energise and hold modes set by an external • PWM drive for inductive loads • • • • • • • • • (e.g.
PAGE 2
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 2/11 DESCRIPTION iC-JE is a PWM driver for inductive loads, such as relay coils, solenoid valves and small DC motors. The setpoint for the coil current is preset with the help of the RSET external resistor. 60 to 300 mA can be set for energise mode which then automatically drop to 2/3 of this value (40 to 200 mA) during hold mode. The device is switched to hold mode after 100 ms provided that the set coil current is obtained during energising (PWMOK = 1).
PAGE 3
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 3/11 PACKAGE DIMENSIONS SO8 FRONT 0.84 4° 0.18 1.40 45° SIDE RECOMMENDED PCB-FOOTPRINT TOP 5.40 0.40 1.27 0.60 All dimensions given in mm. Tolerances of form and position according to JEDEC MS-012. 1.90 1.27 6 3.90 4.
PAGE 4
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 4/11 ABSOLUTE MAXIMUM RATINGS Beyond these values damage may occur; device operation is not guaranteed. Item No. Symbol Parameter Conditions Unit Min. Max. G001 V(VB) Voltage at VB -0.3 48 V G002 I(VB) Current in VB -350 6 mA G003 V(OUT) Voltage at OUT -0.3 60 V G004 I(OUT) Output Current in OUT -6 350 mA G005 V(LED) Voltage at LED -0.3 VB V G006 I(LED) Current in LED -6 8 mA G007 V(ISET) Voltage at ISET -0.
PAGE 5
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 5/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VB = 10...45 V, LOUT = 0.01...10 H, RSET = 10...60 kΩ, Tj = -25...125 °C, unless otherwise noted. LED connected or pin LED linked to GND (via ca. 500 Ω resistor or capacitor). Item No. Symbol Parameter Conditions Unit Min. Typ. Max. Total Device 001 VB Permissible Supply Voltage Range 10 45 V 002 I(VB) Supply Current in VB 003 I(VB) Supply Current in VB Outputs OUT, LED disabled 0.
PAGE 6
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 6/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VB = 10...45 V, LOUT = 0.01...10 H, RSET = 10...60 kΩ, Tj = -25...125 °C, unless otherwise noted. LED connected or pin LED linked to GND (via ca. 500 Ω resistor or capacitor). Item No. Symbol Parameter Conditions Unit Min. Typ. Max. 310 Thys Thermal Shutdown Hysteresis Thys = Toff − Ton 10 20 30 °C 311 f() Flash Frequency on Error ERR = hi or PWMOK = 0, VB = 6...45 V 1.8 2.4 3.6 Hz 1.
PAGE 7
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 7/11 APPLICATIONS INFORMATION Setting the coil current The following equations can be given for the energise and hold modes of the PWM control using Electrical Characteristics Nos. 403 to 405: RSET = K2 I(OUT)hold (4) Example For a relay with a energising current of 100 mA (66 mA hold current) RSET is calculated as: RSET = K1 I(OUT)start (3) RSET = 3250 ΩA = 32.5 kΩ 0.1 A (5) Application circuits 10...45 V 10...45 V LOUT 0.01...10 H LOUT 0.01...
PAGE 8
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 8/11 10...45 V LOUT 0.01...10 H IN (lo = GND) LED IN VB OUT iC−JE D1 100 nF CONTROL C1 GND ISET R1 R2 10...60 kΩ GND Figure 6: Activation via pin IN with an increased energizing current. An additional Schottky diode discharges C1 if IN is switched to low (GND) 10...45 V 10...45 V IN LED VB OUT LOUT 0.01...10 H iC−JE 100 nF CONTROL ISET GND RSET 10...
PAGE 9
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 9/11 EVALUATION BOARD The iC-JE is equipped with a Evaluation Board for test purposes. The following figures show the circuit dia- gram as well as the top and bottom layout of the test PCB.
PAGE 10
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 10/11 REVISION HISTORY Rel Rel.Date G3 15-02-23 Chapter PACKAGING INFORMATION Modification Page DIP8 package discontinued 1-2, 4, 11 Dimensions and Footprint added for SO8 3 iC-Haus expressly reserves the right to change its products and/or specifications. An info letter gives details as to any amendments and additions made to the relevant current specifications on our internet website www.ichaus.
PAGE 11
iC-JE PWM RELAY/SOLENOID DRIVER Rev G3, Page 11/11 ORDERING INFORMATION Type Package Order Designation iC-JE SO8 iC-JE SO8 Evaluation Board iC-JE EVAL JE2D For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (0) 61 35 - 92 92 - 0 Fax: +49 (0) 61 35 - 92 92 - 192 Web: http://www.ichaus.com E-Mail: sales@ichaus.com Appointed local distributors: http://www.ichaus.