View LIA130_4912174.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

LIA130
Optically Isolated Error Amplifier
Features * Optocoupler, Precision Reference, and Error Amplifier in a Single Package * 1.240V 1% Reference (@ 25C) * Linear Optical Coupler Technology with an Industry Standard 431-type * CTR 300% to 600% Linearity * 3750Vrms Isolation
Description The LIA130 is an optically isolated amplifier with a 431-type precision programmable shunt reference combined in the same package. The optocoupler portion of the LIA130 comprises a Gallium Arsenide (GaAs) light-emitting diode (LED) optically coupled to a silicon phototransistor. The current transfer ratio of the device is between 300% and 600%. The combination of features in the LIA130 is optimal for use in isolated AC-to-DC power supplies and DC-to-DC converters. It replaces several discrete components, saves valuable circuit board space, and reduces complexity. The device is available in DIP and surface-mount packages.
Applications * Power System for Workstations * Telecom Central Office Supply * Telecom Bricks
Block Diagram
NC
1
8 LED
Approvals * UL Recognized Component: File # E76270 * CSA Certified Component: Certificate # 1305490
C
2
7 FB
E
3
6 COMP
Ordering Information
Part # LIA130 LIA130S LIA130STR Description 8 Pin DIP (50/Tube) 8-Pin Surface Mount (50/Tube) 8-Pin Surface Mount (1000/Reel)
NC
4
5 GND
Pb
DS-LIA130-R00C
RoHS
2002/95/EC
e3
PRELIMINARY 1
LIA130
Absolute Maximum Ratings (@ 25 C)
Parameter Collector-Emitter Voltage Emitter-Collector Voltage Input Voltage Input DC Current Collector Current Input Power Dissipation 1 Transistor Power Dissipation 2 Total Power Dissipation 3 Storage Temperature Operating Temperature
1 2 3
Symbol Ratings Units VCEO 20 V VECO 7 V VLED 10 V ILED 20 mA IC 50 mA PD 145 mW PD 85 mW PD 145 mW -55 to +125 C TSTG -40 to +85 C TOPR
Absolute Maximum Ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied.
Derate linearly from 25C at a rate of 2.42 mW/ C. Derate linearly from 25C at a rate of 1.42 mW/ C. Derate linearly from 25C at a rate of 2.42 mW/ C.
Electrical Characteristics
Parameter Input Characteristics @ 25C
LED forward voltage Reference voltage Deviation of VREF over temperature Ratio of VREF variation to the output of the error amplifier Feedback input current Deviation of IREF over temperature 1 Minimum drive current Off-state error amplifier current Error amplifier output impedance 2
1
Conditions
ILED = 5 mA, VCOMP = VFB (Fig.1) VCOMP = VFB, ILED = 10 mA, -40 to +85C (Fig.1) VCOMP = VFB, ILED = 10 mA, 25C (Fig.1) TA = -40 to +85C ILED = 10 mA, VCOMP = VREF to 10 V (Fig.2) ILED = 10 mA, R1 = 10 k (Fig.3) TA = -40 to +85C VCOMP = VFB (Fig.1) VLED = 6 V, VFB = 0 (Fig.4) VCOMP = VFB, ILED = 0.1 mA to 15 mA, f<1 kHZ VCE = 10V (Fig. 5) IC = 1.0mA IE = 100 A
Symbol
VF VREF VREF (DEV) VREF/ VCOMP IREF IREF (DEV) ILED (MIN) I (OFF) IZOUTI ICEO BVCEO BVECO
Min
0.9 1.224 1.228 70 7
Typ
1.24 1.24 77 0.002 0.09 0.028 45 0.001 0.22 0.3 -
Max
1.4 1.259 1.252 TBD TBD TBD TBD 80 0.1 50 -
Units
V V mV mV/V A A A A nA V V
Output Characteristics @ 25C
Collector dark current Collector-emitter voltage breakdown Emitter-collector voltage breakdown
1. The deviation parameters VREF(DEV) and IREF(DEV) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average fullrange temperature coefficient of the reference input voltage, VREF, is defined as: |VREF| (ppm/C) = {VREF (DEV)/VREF (TA 25C)} X 106 / TA where TA is the rated operating free-air temperature range of the device. 2. The dynamic impedance is defined as |ZOUT| = VCOMP/ILED. When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by: |ZOUT, TOT| = V/I |ZOUT| X [1 + R1/R2]
2
PRELIMINARY
R00C
LIA130
Electrical Characteristics
Parameter Transfer Characteristics @ 25C Current transfer ratio Collector-emitter saturation voltage Isolation Characteristics @ 25C Input-output insulation leakage current 1 Withstand insulation voltage 1 Resistance (input to output) 1 Switching Characteristics @ 25C Bandwidth Common mode transient immunity at output high 2 Common mode transient immunity at output low 2 Conditions ILED = 5 mA, VCOMP = VFB, VCE = 5 V (Fig. 6) ILED = 10 mA, VCOMP = VFB, IC = 2.5 mA (Fig. 6) RH = 45%, TA = 25C, t = 5s, VI-O = 3000 VDC RH <= 50%, TA = 25C, t = 1 min VI-O = 500 VDC (Fig. 7) ILED = 0 mA, Vcm = 10 VPP RL = 2.2 k (Fig. 8) ILED = 10 mA, Vcm = 10 VPP RL = 2.2 k (Fig. 8) Symbol CTR VCE (SAT) II-O VISO RI-O BW |CMH| |CML| Min 300 2500 Typ 500 0.099 1012 10 TBD TBD Max 600 0.5 1.0 Units % V A Vrms kHZ kV/s kV/s
1. Device is considered as a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are shorted together. 2. Common mode transient immunity at output high is the maximum tolerable (positive) dVcm/dt on the leading edge of the common mode impulse signal, Vcm, to assure that the output will remain high. Common mode transient immunity at output low is the maximum tolerable (negative) dVcm/dt on the trailing edge of the common pulse signal,Vcm, to assure that the output will remain low.
Example Application for the LIA130
VIN
PWM Control LIA130
1 8
VOUT
2
7
R1
3
6
4
5
R2
R00C
PRELIMINARY
3
LIA130
Test Circuits
ILED IREF +
8
2
IOFF VLED +
8
2
6
3
6
3
7
7
5
5
IREF Test Circuit
IOFF Test Circuit
8
2
ICEO VCE +
ILED
8
2
IC VCE
6
3
6
3
+
+
7 7
VCOMP VREF
5
5
ICEO Test Circuit
CTR, VCE-sat Test Circuit
ILED VF
8
2
ILED
8
2
6
3
+
6
3
+ VREF
VCOMP
7 7
VREF
5 5
VREF, VF, ILED-min Test Circuit
VREF / VCOMP Test Circuit
4
PRELIMINARY
R00C
LIA130
Test Circuits (cont.)
VCC = +5VDC IF = 10 mA RL 47
1
8
1f
VOUT
2
7
0.1 VPP
VIN 0.47V
3
6
4
5
Frequency Response
VCC = +5VDC IF = 0 mA (A) IF = 10 mA (B) R1 2.2k VOUT
1
8
2
7
AB
3
6
4
5
VCM
_
+
10VP-P
CMH and CML
R00C
PRELIMINARY
5
LIA130
PERFORMANCE DATA*
15 ILED - Supply Current (mA) 10 5 0 -5 -10 -15 -1.0
LIA130 LED Current vs. Cathode Voltage (TA=25C, VCOMP=VFB)
ILED - Supply Current (A)
-0.5
0.0
0.5
1.0
1.5
150 120 90 60 30 0 -30 -60 -90 -120 -150 -1.0
LIA130 LED Current vs. Cathode Voltage (TA=25C, VCOMP=VFB)
VREF - Reference Voltage (V)
LIA130 Reference Voltage vs. Ambient Temperature
1.40
1.37
1.34 ILED=10mA 1.31
1.28 -0.5 0.0 0.5 1.0 1.5 -40 -20 VCOMP - Cathode Voltage (V) 0 20 40 Temperature (C) 60 80
VCOMP - Cathode Voltage (V)
IREF - Reference Current (mA)
110 100
LIA130 Reference Current vs. Ambient Temperature (ILED=10mA, R1=10K)
I(OFF) - Off Current (nA)
0.5 0.4 0.3 0.2 0.1 0
LIA130 Off Current vs. Ambient Temperature (VLED=13.2V, VFB=0V)
ILED - Forward Current (mA)
LIA130 LED Forward Current vs. Forward Voltage
20 85C 55C 25C -5C
15
90 80 70 60 50 -40 -20 0 20 40 60 Temperature (C) 80 100
10
5
0 -40 -20 0 20 40 60 80 100 0.8 0.9 Temperature (C) 1.0 1.1 1.2 1.3 1.4 VF - Forward-Voltage (V) 1.5 1.6
50 ICEO - Dark Current (nA) 40 30 20 10 0 -10 -40
120 IC - Collector Current (mA) 100 80 60 40 20 0
(IC/IF) - Current Transfer Ratio (%)
LIA130 Dark Current vs. Temperature (VCE=10V)
LIA130 Collector Current vs. Ambient Temperature (VCE=5V)
700 600 500 400 300 200 100 0
LIA130 Current Transfer Ratio vs LED Current (VCE=5V)
ILED=20mA ILED=10mA ILED=5mA ILED=1mA -40 -20 0 20 40 60 Temperature (C) 80 100
-5C 25C 55C 85C
-20
0
20 40 60 Temperature (C)
80
100
0
5 10 15 20 ILED - Forward Current (mA)
25
*The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifications, please contact our application department.
6
PRELIMINARY
R00C
LIA130
PERFORMANCE DATA*
LIA130 Saturation Voltage vs. Ambient Temperature (ILED=10mA; IC=10mA)
IC - Collector Current (mA)
VCE (sat) - Saturation Voltage (V)
0.25 0.20 0.15 0.10 0.05 0.00 -40 -20 0 20 40 60 80 100
160 140 120 100 80 60 40 20 0 0 1 2 ILED=10mA ILED=5mA ILED=1mA 3 4 5 6 7 8 VCE - Collector-Emitter (V) 9 10 ILED=20mA
VCE (sat) - Saturation Voltage (V)
0.30
180
LIA130 Collector Current vs. Collector Voltage (TA=25C)
LIA130 Delta VREF / Delta VCOMP vs. Ambient Temperature
-1.5
-2.0
-2.5
-3.0 -40 -20 0 20 40 60 Temperature (C) 80 100
Temperature (C)
LIA130 Voltage Gain vs. Frequency
15 Voltage Gain, A(Vo/Vin) dB
0 100 -15 500 -30 10 1k 100 Frenquency kHz 1000
*The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifications, please contact our application department.
R00C
PRELIMINARY
7
LIA130
The LIA130 The LIA130 is essentially an optically isolated error amplifier. It comprises three of the necessary components to form an isolated power supply: an optocoupler, an error amplifier, and a reference voltage device. The LIA130 is the functional equivalent of a 431 series shunt voltage regulator plus an optocoupler in the same package. LED Pin The LED within the LIA130 is powered by a sample of the output voltage that is being regulated. Typically, a resistor divider is provided to keep this voltage sample within the operating range of the LED and its series resistor. As the output voltage changes, the LED light output changes, which provides a changing error voltage from the phototransistor output of the LIA130. The sampled voltage must be at least 1.24V (the reference voltage) plus 1.5V (the LED voltage drop) or a minimum of 2.74 volts. The sampled voltage can also be provided from a slaved secondary winding of the transformer rather than a resistor divider. There must be a current-limiting resistor in series with the LED pin to keep the current flow through the LED within its operating range for all expected sampled output levels. This resistor must be selected along with the resistor in series with the output phototransistor. FB Pin The LIA130, when connected as shown in the Typical Application Circuit, will regulate the output voltage so that the voltage on its FB pin is 1.24V. Set the values of the two voltage divider resistors, R1 and R2 in this way: R1/R2 = (VOUT / VREF) - 1 The value of R1 is set by the input offset current, 0.8A. 1% accuracy is obtained when the value of R1 satisfies this formula: ((VOUT - 1.24) / R1) > 80A GND Pin Connect the GND pin of the LIA130 to the secondary ground of the converter. NC Pins The NC (not connected) pins have no internal connection and must not have any connection to the secondary side, as this might compromise the primary-to-secondary isolation. COMP Pin The frequency response of the converter can be optimized for the particular application by placing a compensation network between the COMP pin and the FB pin of the LIA130. In a system with a typical low-bandwidth requirement, only a 0.1F capacitor might be needed. If the system has more critical bandwidth requirements, then measurements must be made of the system's loop. See "Practical Design of Power Supplies" by Ron Lenk, IEEE Press, 1998, for an excellent description. C & E Pins The output phototransistor of the LIA130 provides the isolated and amplified error signal that represents the DC output level of the converter. Typically, the collector of the phototransistor will be pulled up to voltage and the emitter will be grounded. The value of the collector's pull-up resistor and the value of the LED current-limiting resistor must be determined together with respect to the input voltage range of the PWM circuitry. The variation in CTR of the LIA130 must also be taken into account. As an example, consider first that the minimum CTR of the LIA130 is 300%. If the current-limiting resistor of the LED is set to allow a maximum current through the LED of 1mA when the converter output is at a nominal 15 volts: RLED = (15V - 2.74V) / 0.001A = 12.260k then a minimum of 3mA will flow through the collector pull-up resistor. If the collector is pulled up to 12V and the PWM has an internal reference voltage of 5V, then the minimum resistor value is: RPULLUP > (12V - 5V) / 0.003A > 2.333k [Standard values can be selected for RLED and RPULLUP and the small differences then re-calculated.]
8
PRELIMINARY
R00C
LIA130
MANUFACTURING INFORMATION Soldering For proper assembly, the component must be processed in accordance with the current revision of IPC/JEDEC standard J-STD-020. Failure to follow the recommended guidelines may cause permanent damage to the device resulting in impaired performance and/or a reduced lifetime expectancy. Washing Clare does not recommend ultrasonic cleaning or the use of chlorinated solvents.
Pb
RoHS
2002/95/EC
e3
MECHANICAL DIMENSIONS 8-Pin DIP Through-Hole Package PC Board Pattern
2.540 0.127 (0.100 0.005) 6.350 0.127 (0.250 0.005)
9.652 0.381 (0.380 0.015)
7.620 0.254 (0.300 0.010)
8-0.800 DIA. (8-0.031 DIA.)
2.540 0.127 (0.100 0.005)
9.144 0.508 (0.360 0.020)
6.350 0.127 (0.250 0.005) 7.620 0.127 (0.300 0.005)
0.457 0.076 (0.018 0.003) 4.064 TYP (0.160)
3.302 0.051 (0.130 0.002) 7.239 TYP. (0.285) 0.254 TYP (0.01)
7.620 0.127 (0.300 0.005)
0.889 0.102 (0.035 0.004)
Dimensions mm (inches)
8-Pin Surface Mount Package
9.652 0.381 (0.380 0.015) 2.540 0.127 (0.100 0.005) 9.525 0.254 (0.375 0.010) 7.620 0.254 (0.300 0.010) 0.254 0.127 (0.010 0.0005) 3.302 0.051 (0.130 0.002)
Recommended PCB Land Pattern
2.54 (0.10)
0.635 0.127 (0.025 0.005)
6.350 0.127 (0.250 0.005)
1.65 (0.0649)
8.90 (0.3503)
0.457 0.076 (0.018 0.003) 4.445 0.127 (0.175 0.005)
0.65 (0.0255)
0.813 0.120 (0.032 0.004)
Dimensions mm (inches)
R00C
PRELIMINARY
9
LIA130
MECHANICAL DIMENSIONS (Cont.)
Tape and Reel Packaging for 8-Pin Surface Mount Package
330.2 DIA. (13.00 DIA.) Top Cover Tape Thickness 0.102 MAX. (0.004 MAX.) Top Cover Tape P = 12.00 (0.472) Ao = 10.30 (0.406) 1 8
W = 16.30 max (0.642 max)
K0 = 4.90 (0.193) Embossed Carrier K1 = 4.20 (0.165)
Bo = 10.30 (0.406) Dimensions mm (inches)
User Direction of Feed
Embossment
NOTE: Tape dimensions not shown comply with JEDEC Standard EIA-481-2
For additional information please visit our website at: www.clare.com
Clare, Inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. Neither circuit patent licenses nor indemnity are expressed or implied. Except as set forth in Clare's Standard Terms and Conditions of Sale, Clare, Inc. assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. The products described in this document are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or where malfunction of Clare's product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice.
Specification: DS-LIA130-R00C (c)Copyright 2009, Clare, Inc. All rights reserved. Printed in USA. 11/17/09
10
PRELIMINARY

▲Up To Search▲

Price & Availability of LIA130

	To Download LIA130 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .