AM4964
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 21
Technical content
Features
Flexible Speed Control Options Combined PWM+Thermistor Speed Control PWM Speed Control DC Voltage Speed Control Adjustable Low and High Temperature Corners Full Speed When Thermal Resistor is Shorted Adjustable Output Duty Gap between High and Low Temperature when 100% PWM Input Built-in oscillator – No external capacitor Built-in Minimal Speed Setup Circuit Alpha Slope Adjustable Rotation Speed Indicator (FG) Built-in Temperature Control Circuit Built-in Thermal Shutdown Circuit Lock Protection and Auto-restart Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) NC PGND OUT2 VCC VMIN PWM CF FG RT TL IN+ HB IN- RADJ CT SGND TH TA OUT1 NC EXPOSED PAD TSSOP-20EP
Applications
CPU Cooler Fan in PC Brushless DC Motor Driver Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
Document number: DS37241 Rev. 2 - 2 2 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Typical Applications Circuit OUT2 OUT1 VCC CTVMIN RADJ PWM IN- CF FG IN+ RT TH Hall AM4964 1F VCC 1F 0.47F RT SGND 16 HB R7D2 PGND NC NC TA TL
Document number: DS37241 Rev. 2 - 2 3 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Pin Descriptions Pin Number Pin Name Function 1,20 NC Not connected
2 PGND Power ground
3 OUT2 Fan driver output2
4 VCC Power supply
5 VMIN Minimum speed setting pin
6 PWM PWM pulse input terminal
7 CF Filter capacitor
8 FG FG signal output
9 RT RT signal output
10 TL Low temperature set resistor
11 IN+ Hall sensor input+
12 HB Hall bias voltage
13 IN- Hall sensor input-
14 RADJ Output pulse duty/input pulse duty adjustable terminal
15 CT Lock protect and auto start
16 SGND Signal ground
17 TH High temperature set resistor
18 TA Output duty gap adjust pin between low and high temperature at 100% input duty
19 OUT1 Fan driver output1
Exposed pad Central exposed pad – The central exposed pad is for thermal dissipation. On PCB layout, the exposed pad can be connected to GND or remain unconnected to any other signals
Document number: DS37241 Rev. 2 - 2 4 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Functional Block Diagram Thermal Shutdown Control Circuit Triangle Wave VCC RADJ VMIN PWM CF OUT1 OUT2 FG Pre- driver V+ V+ 104k 42k 90k 54k 51k 56k 93k 18k17k RT TL 10 TH 17 Vreg Lock Shutdown and Auto Restart Hysteresis Amp CT IN + IN - PGND 15 2 TA 1.25V HB SGND Truth Table Items IN- IN+ CF CT OUT1 OUT2 FG Mode
1 H L
L L H L L Rotation
2 L H L H Off PWM Off
3 H L
H Off L L Rotation Recirculation
4 L H L Off Off PWM Off
5 H L
6 L H Off H Off
Document number: DS37241 Rev. 2 - 2 5 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Absolute Maximum Ratings (Note 4) (@TA = +25° C, unless otherwise specified.) Symbol Parameter Rating Unit VCC Supply Voltage 18 V IOUT Output Current 1.0 A VOUT Output Voltage 18 V VFG FG Output Voltage 18 V IFG FG Output Current 10 mA PD Power Dissipation 1.1 W TSTG Storage Temperature Range -55 to +150 °C JA Thermal Resistance (Junction to Ambient) (Note 5) 114 ° C/W ESD ESD (Human Body Model) 3000 V ESD ESD (Machine Model) 300 V Notes: 4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are st ress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability 5. TSSOP-20EP exposed pad is soldered to minimum recommended landing pads (see Package Outline Dimension section) on a 4.0mm x 3.0mm two- layer 2oz.copper FR4 PCB (1.6mm thickness) with four thermal vias in the exposed PAD to the copper flood on the bottom layer. See thermal de-rating curves in the thermal performance section. Recommended Operating Conditions Symbol Parameter Min Typ Max Unit VCC Supply Voltage 3.5 12 16 V VIN+ Hall Input Voltage + 0.2 – 3 V VIN- Hall Input Voltage - 0.2 – 3 V TA Ambient Temperature -30 – +90 °C
Document number: DS37241 Rev. 2 - 2 6 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Electrical Characteristics (@VCC=12V, TA=+25° C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit IQ1 Quiescent Current VCT=L 10.15 15 18.75 mA IQ2 VCT=H 5.35 8 10.5 VSATH Output Saturation Voltage at High Side ISOURCE=200mA – 1.0 1.17 V VSATL Output Saturation Voltage at Low Side ISINK=200mA – 0.2 0.3 V fPWM CPWM Frequency – 18 25 32 kHz VCPWMH CPWM High Level Voltage – 3.40 – 3.8 V VCPWML CPWM Low Level Voltage – 1.8 – 2.3 V VCFH1 CF High Level Voltage – 2.95 – 3.35 V VCFH2 – 2.95 – 3.45 VCFL1 CF Low Level Voltage – 2.35 – 2.85 V VCFL2 – 1.75 – 2.25 VADJ1 RADJ Pin Voltage – 3.65 – 4.15 V VADJ2 – 3.75 – 4.25 VMIN VMIN Voltage – 2.48 – 3.22 V VHB Bias – 1 – 1.5 V VHYS Hall Input Hysteresis – – ± 10 ± 20 mV VCTH CT High Level Voltage – 3.55 3.7 3.88 V VCTL CT Low Level Voltage – 1.55 1.7 1.85 V ICHG CT Charge Current – 1.15 2 3.55 µA IDHG CT Discharge Current – 0.115 0.2 0.355 µA RCD CT Charge and Discharge Ratio ICHG/IDHG 8.5 10 14.5 – VFGL FG Output Low Level Voltage IFG=5mA – 0.2 0.3 V ILFG FG Leakage Current VFG=7V – – 30 µA
Document number: DS37241 Rev. 2 - 2 7 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Functional Descriptions HB – Hall Bias Output This is a 1.25V nominal voltage source to bias a differential un -buffered Hall element sensor. If a Hall element requires a lower voltage than the H-Bias output, connect an appropriate value resistor between the HB pin and the Hall element supply pin. IN+ and IN- – Hall Inputs The rotor position is detected by a Hall sensor, with the output applied to the IN+ and IN - pins. This sensor can be either a 4 pin 'naked' Hall device or of the 3 -pin buffered switching type. For a 4 -pin device the differential H all output signal is connected to the IN+ and IN -pins. For a buffered Hall sensor the Hall device output is attached to the IN+ pin, with a pull -up attached if needed, whilst the IN- pin has an external potential divider attached to hold the pin at half VREF. When IN+ is high in relation to IN-, OUT2 is the active drive. PWM – Pulse Width Modulate Signal Input Pin The PWM signal is applied at this pin and then be translated to be stable voltage to control the motors rotate speed. TL – Low Temperature Corner Set Pin A resistor (R8) is connected between TL and ground to adjust the low corner temperature. Low Temperature Corner Value vs. R8 Resistor Value 5 6 7 8 9 10 Low Corner Temperature ( o R8 (k) RT=TSM2A103F39H1RZ
Document number: DS37241 Rev. 2 - 2 8 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Functional Descriptions (cont.) TH – High Temperature Corner Set Pin A resistor (R9) is connected between TH and ground to adjust the high corner temperature. High corner temperature can be estimated by: TH=TL+5*R9/100. High Temperature Corner vs. R9 TA – Output Duty Gap Adjust between High and Low Temperature Corners When Input Duty is 100% A resistor (R7) is connected between TA and ground to adjust the output PWM duty gap between high temperature and low temperature corners when the external input PWM duty is 100%. 0 100 200 300 400 500 600 700 800 900 1000 100 Low Temperature High Temperature The Gap Between Low and High Temperature R7 (K) Output Duty Cycle (%) Output PWM Duty vs. R7 40 60 80 100 120 140 160 180 200 220 240 Input Duty Cycle=100% High Corner Temperature ( o R9 (k)
Document number: DS37241 Rev. 2 - 2 9 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Functional Descriptions (cont.) CF –CF Capacitor Pin A capacitor is connected to this pin as a filter to translate PWM signal to be stable voltage . The resistors R3 and R4 are connected to CF pin to adjust the maximum speed at high temperature and low temperature corners. Adjust the maximum speed vs. input duty to approximately match the target specification using R3 and R4 at low temperature (T<TL, V8<V7); Measure the fan rotating speed vs. input duty. And draw a curve figure accordingly (Step=5%). Output PWM Duty vs. R3 and R4 at Low Temperature Adjust the maximum speed vs. input PWM duty to approximately match the target specification using R3 and R4 at high temperature (T>TH, V8>V7+0.7V). Output PWM Duty vs. R3 and R4 at High Temperature 0 20 40 60 80 100 100 R3=360K R3=1M R3 open Output Duty (%) Input Duty (%) 0 20 40 60 80 100 100 R4=150K R4=390K R4 open Output Duty (%) Input Duty (%) 0 20 40 60 80 100 100 R3=360K R3=1M R3 open Output Duty (%) Input Duty (%) 0 20 40 60 80 100 100 R4=150K R4=390K R4 open Output Duty (%) Input Duty (%)
Document number: DS37241 Rev. 2 - 2 10 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Functional Descriptions (cont.) RADJ – Adjust the Line Slope of the Input PWM Duty vs. Output PWM Duty at the OUT1 and OUT2 Adjust Slope K of the fan rotating speed（or output duty）vs. input duty to approximately match the target specification using R5 and R6. Output PWM Duty Slope K vs. Input PWM Duty with Slope K R5 and R6 VMIN – Minimum Speed Setting A voltage can be set on this pin via a potential divider between the VREF (or Supply) and GND pins. This voltage is monitored by the PWM pin to clamp the PWM control voltage so that it does not rise above VMIN voltage. As a higher voltage on the PWM pin represents a lower speed, the VMIN setting prevents the motor speed going lower than the minimum speed set by the VMIN pin. When the VMIN voltage is higher than the lowest speed setting voltage allowed (The lowest speed voltage is about 0.28VCC), the fan speed is maintained at the lowest speed. Adjust the minimum speed vs. input duty to approximately match the target specification via R2 (R1=1 5kΩ). Measure the fan rotating speed and the input duty, as shown below. 0 1 2 3 4 5 6 7 8 9 10 100Output Duty Cycle (%) R2 (K) Output PWM Duty vs. R2 0 10 20 30 40 50 60 70 80 90 100 100 R5=100K R5=270K R5 is open Output Duty Cycle (%) Input Duty (%) 0 20 40 60 80 100 100 R6=100K R6=270K R6 open Output Duty (%) Input Duty (%)
Document number: DS37241 Rev. 2 - 2 11 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Functional Descriptions (cont.) CT – Locked Rotor Timing Capacitor The CT pin will have a capacitor connected to ground. It is a multi -function pin providing timing for the lock detect and auto -restart. Different rates of charge and discharge of CT capacitor depending on the mode of operation (fan operation status) give t he lock-detect time (tLCKDET) and lock time (tOFF) before the next auto-start retry. When the motor is running, the capacitor is discharged at every Hall signal change. CT pin provides the timing for the Locked Rotor monitor. In normal operation, Lock Detect is enabled. If the Hall signal does not change (i.e. a rotor lock condition) within the Lock Detect time (tLCKDET), the outputs are disabled. In this condition the motor will not be driven for a set time tOFF. This tOFF time depends on the external CT capacitor value and its internal discharge current (IDHG). After the tOFF period device enters auto-restart phase to re-start the motor with a new Lock Detect time. If the motor has not turned to generate a transition on the Hall inputs by the end of this tLCKDET period, the motor re-enters motor lock tOFF period with the outputs disabled. If the Hall signal change is detected, the motor is deemed as running and goes into lock -detection mode. The tLCKDET and tOFF are determined by the value of the external capacitor on the CT pin and the internal charge and discharge currents during these time periods. The currents during tLCKDET and tOFF are ICHG, and IDHG respectively. FG – Frequency Generator (Tachometer) Output Pin This is the Frequency Generator output and is a buffered signal from the Hall sensor. This is an open collector drive giving an active pull down with the high level being provided by an external pull up resistor. OUT1 and OUT2 Pins OUT1 and OUT2 pins provide H bridge driver output for fan and motor coil connection. VCC – IC Supply voltage This pin provides the supply for the device. GND – Supply Return This is the device supply ground return pin for control signal. PGND –Power Supply Return This is the device supply ground return pin for power output pins OUT1 and OUT2 and will generally be the most negative supply pin to the fan.
Document number: DS37241 Rev. 2 - 2 12 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Performance Characteristics Quiescent Current vs. Supply Voltage Quiescent Current vs. Ambient Temperature Output Saturation Voltage vs. Ouput Current Allowable Power Dissipation vs. Allowable Temperature (Note 6) Note 6: TSSOP-20EP exposed pad is soldered to minimum recommended landing pads (see Package Outline Dimension section) on a 4.0mmx3.0mm two-layer 2oz.copper FR4 PCB (1.6mm thickness) with four thermal vias in the exposed PAD to the copper flood on the bottom layer. -50 0 50 100 VCC=12V IQ1 (VCT=L) IQ2 (VCT=H) Quiescent Current (mA) Ambient Temperature ( o 0 100 200 300 400 500 0.0 0.5 1.0 1.5 2.0 2.5 3.0 VCC=12V, TA=25 o C VSATH VSATL Output Saturation Voltage (V) Output Current (mA) -20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Allowable Power Dissipation (W) Ambient Temperature ( o 0 5 10 15 20 25 TA=25 o C IQ1(VCT=L) IQ2(VCT=H) Quiescent Current (mA) Supply Voltage (V)
Document number: DS37241 Rev. 2 - 2 13 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Applications Note Typical application circuit for PWM input signal for speed control with AM4964 is shown below. The speed is primarily controlled by a voltage on the CF pin (either from DC voltage signal or PWM inputs signal converted to DC voltage). OUT2 OUT1 VCC CTVMIN RADJ PWM IN- CF FG IN+ RT TH Hall AM4964 1F VCC 1F 0.47F RT SGND 16 HB R7D2 PGND NC NC TA TL note7 Typical Application Circuit (External PWM Input Speed Control) Note 7: C1 is for power stabilization and should be 1μF or higher depending on the motor current and motor design.
Document number: DS37241 Rev. 2 - 2 14 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Applications Note (cont.) Some of typical application performance curves based on circuits above are shown below (R1 to R6 open, R8=8kΩ, R9=150kΩ). Output PWM Duty vs. Input PWM Duty with R7 (180k) Output PWM Duty vs. Input PWM Duty with R7 (390k) 24 26 28 30 32 34 36 38 40 42 44 46 100Output Duty (%) Temperature ( o R8=8.52K, R9=130K Input Duty 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% TH TL Output PWM Duty vs. Temperature 0 20 40 60 80 100 100 Output Duty Gap (Input Duty=100%) Low Temperature High Temperature Output Duty Gap(%) Input Duty (%) R7=180k 0 20 40 60 80 100 100 Output Duty Gap (Input Duty=100%) Low Temperature High Temperature Output Duty (%) Input Duty (%) R7=390K
Document number: DS37241 Rev. 2 - 2 15 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Applications Note (cont.) Power Supply Stabilization The recommended operating voltage range for AM4964 is 3.5V to 16V. A decoupling capacitor C1 (which also acts as re -circulating capacitor at commutation) should be connected close to the VCC pin. C1 is for power stabilization and should be 1 μF or higher depending on the motor current and motor design. Hall Bias and Hall Input for Commutation Signal The HB pin provides a 1.25V Hall bias voltage to drive Hall element. The output of the Hall elements or the Hall switches is connected to Hall input IN+ and IN- pin as described previously in functional description section. To avoid noise, the connection to the Hall element or switch should be as short as possible. The Hall input stage (IN+ and IN- pin) has a hysteresis of 20mV typical . The differential Hall input signal should be 50mV peak or higher. Speed Control The motor speed is governed by the output PWM duty of the H Bridge. Speed Control The motor speed is governed by the output PWM duty of the H Bridge. M The voltage on the CF, VMIN pin and the internal triangle wave voltage controls the output PWM duty and therefore the speed of the motor. When the CF voltage is smaller than VMIN voltage, the output PWM duty is generated by comparing the triangular voltage with CF. If the CF pin voltage is higher than the VMIN pin, the speed is controlled by comparing th e triangular voltage with VMIN voltage. When the PWM voltage is lower than the low side of the triangular voltage, the motor will run at full speed. See “Speed Control and Minimum Speed Setting” figure. An input DC voltage from 3.6V to 1.9V (for 12V supply) on the CF pin controls the output PWM duty from 0% to 100% thus allowing speed control from 0% to 100% of the full speed. The DC voltage of CF can be adjusted by PWM input signal duty and the ambient temperature sensed by the thermistor (resistive sensor) connected to RT pin.
Document number: DS37241 Rev. 2 - 2 16 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Applications Note (cont.) Adjustable Voltage fPWM=25kHz Low Speed PWM Variable High Speed VMIN VH=3.6V VL=2.0V All Parameters Are Tested under VCC=12V VCF (T≤TL) VCF (T≥TH) FG Output(T≤TL) FG Output(T≥TH) Speed Control and Minimum Speed Setting Minimum Speed Setting The minimum speed setting prevents the motor speed dropping below a setting speed when the speed demand is too low (i.e. PWM voltage is closer to 3.6V) When the CF pin voltage is higher than the VMIN voltage, the VMIN voltage is compared with the internal triangular wave to generate the output PWM duty. Therefore, setting the VMIN to certain fixed voltage forces the VMIN to control the speed even when the CF voltage is higher. If VMIN setting is not used or application does not need to set the minimum speed, connect the VMIN to CF directly. Rotor Lock Detect and OFF Tme Setting The capacitor C4 from CT pin to the ground provides the timing for the lock detect and auto-restart. The capacitor C4 is charges and discharged by the CT pin at a fixed rate depending on the mode of operation (fan operation status) and therefore the value of the C4 to giv es lock-detect time (TLCKDET) and lock time (TOFF) before next auto-start retry. The AM4964 returns the C4 voltage to the low threshold, V CTL (1.77V), each time the Hall sensor provides the commutation signal. C4 is charged with ICHG which is typically 2μA. If the voltage on the C4 reaches the high threshold, V CTH (3.7V) before the next Hall signal change, the output will be shut down and the device will enter lock condition. C DET CTH CT CHG The thresholds voltage and charge current are fixed, therefore the tLCKDET time depends only on the value of C4. C DET For C4 of 0.47μF, tLCKDET is 0.47s.
Document number: DS37241 Rev. 2 - 2 17 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Applications Note (cont.) If lock detection causes device to enter output shutdown, the CT pin will discharge the C4 capacitor with I DHG provide tOFF period. The tOFF is the time the device waits before next auto -restart. During tOFF period, the C4 is discharged for the high threshold, V CTH to low threshold V CTL at the discharge current IDHG which is typically 0.2μA. OFF CTH CT CHG The thresholds voltage and discharge current are fixed, therefore the tOFF time depends only on the value of C4. OFF For CT of 0.4μs, tOFF is 4.7s before the next auto restart. Thermal Shutdown AM4964 includes a thermal shutdown function. W hen the device junction temperature is higher than +176º C typical, the thermal shutdown function is triggered and the low side output transistors in H bridge driver will be turned off. When the IC junction temperature drops below +148º C typical, the device will recover. Status Output - FG Output The FG output pin is an open collector output which switches ON (pulled low) and OFF (pulled high with an external resistor) depending on the magnetic phase of the motor. The external pull up resistor should be connected to the FG pin. The FG pin has series resistors of 25Ω typical integrated in the FG output structure to increased robustness against reverse supply connection of the FG to ground. The typical value for external pull-up on FG is 10k.
Document number: DS37241 Rev. 2 - 2 18 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT
Ordering Information
AM4964 X XX – XX Packing TR : Tape & Reel G1 : Green Product Name RoHS/GreenPackage G : TSSOP-20EP Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green . Package Temperature Range Part Number Marking ID Packing TSSOP-20EP -30 to +90C AM4964GTR-G1 AM4964GG 4000/Tape & Reel Marking Information (Top View) Part Number Package Marking ID AM4964GTR-G1 TSSOP-20EP AM4964GG AM4964 GG YWWAXX First and Second lines: Logo and Marking ID Third Line: Date Code Y: Year 0 to 9 WW: Week 00 to 52 (Work Week of Molding) A: Assembly House Code XX: 7th and 8th Digits: Batch No.
Document number: DS37241 Rev. 2 - 2 19 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: TSSOP-20EP 0.650(0.026)TYP 6.200(0.244) 6.600(0.260) #1 PIN 6.400(0.252) 6.600(0.260) INDEX 0.750(0.030) 0.100(0.004) 2.900(0.114) 3.100(0.122) 4.100(0.161) 4.300(0.169) 0.200(0.008) 0.280(0.011) 0.050(0.002) 0.150(0.006) 0.800(0.031) 1.050(0.041) 1.200(0.047) MAX 0.340(0.013) 0.540(0.021) 10° 14° 0.250(0.010)TYP 0.450(0.018) REF R0.090(0.004)MIN R0.090(0.004)MIN TOP & BOTTOM 0.200(0.008)MIN 4.300(0.169) 4.500(0.177) 0.100(0.004) 0.190(0.007) EXPOSED PAD Note: Eject hole, oriented hole and mold mark is optional. Ф
Document number: DS37241 Rev. 2 - 2 20 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT Suggested Pad Layout (1) Package Type: TSSOP-20EP ZGY1 E X Y Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) Dimensions E (mm)/(inch) (mm)/(inch) (mm)/(inch) –
Document number: DS37241 Rev. 2 - 2 21 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated NEW PRODUCT IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license unde r its patent or trademark rights, nor the rights of others. Any Customer or user of t his document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthor ized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application , Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arisin g out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product nam es and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safe ty-related requirements concerning their products and any use of Diodes Incorporated products in such safety -critical, life support devices or systems, notwithstanding any devices - or systems- related information or support that may be provided by Diodes In corporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety -critical, life support devices or systems. Copyright © 2014, Diodes Incorporated www.diodes.com