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| AME, Inc. AME5104 n General Description The AME5104 is a monolithic IC that was designed as a step-down DC/DC Converter and owns the ability of driving a 3A load without additional transistor component.The output versions included 3.3V,5V,12V and an adjustable type.It operates at a switching frequency of 150KHz thus allowing smaller sized filter components otherwise it would need lower frequency switchhing regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. Regarding protected function, current limit is to protect over current operating of the output switch. 150KHz,3A PWM DC/DC Buck Converter n Features l 3.3V, 5V, 12V and adjustable l Adjustable version output voltage range: 1.4-36V l +4% max over line and load conditions l 150KHz +15% fixed switching frequency l TTL shutdown capability l Operating voltage can be up to 36V l Output load current: 3A l TO-263-5L package l Low power standby mode l Current-limit protection l High efficiency l Built-in a switching transistor on chip, requires only 4 external components l All AME's Lead Free Products Meet Standards RoHS n Applications l Simple High-efficiency step-down regulator l Positive to negative converter l On-card switching regulators Rev.C.02 1 AME, Inc. AME5104 n Function Block Diagram EN V IN Current Source Bias + + 150KHz,3A PWM DC/DC Buck Converter 1.235V Reference 2.5V Regulator Start Up 200 mV 220 mV R + COMP Current Limit + FB R2 + COMP - AMP + COMP + Driver Thermal Limit 3A Switch R 1=2.5K COMP - 150 KHz OSC. SW GND n Typical Application 4 + 1 Input C1 680uF 3 FB 2 SW EN AME 5104 Fix Output GND 5 L1 33uH D1 1N5825 C2 220 uF Unregulated DC Input L O A D R2 1K + 1 Input C1 680uF 4 FB 2 SW R1 AME 5104 Adjustable Output 3 Gnd 5 L1 47uH D1 1N5825 C2 220uF Unregulated DC Input EN L O A D 2 Rev.C.02 AME, Inc. AME5104 n Pin Configuration TO-263-5 Top View AME5104ACDV 1. IN 2. SW 150KHz,3A PWM DC/DC Buck Converter A M E5104 3. GND(TAB) 4. FB 5. EN 12345 n Pin Description AME5104AJDVxxx Pin Number 1 Pin Name IN Pin Description Analog and Power input. Input Supply Pin. Place bypass capacitor as close to VIN as possible. Power Switch input. This is the drain of the internal NMOS power switch. Minimize the metal trace area connected to this pin to minimize EMI. 2 SW 3 GND Ground. Tie directly to ground plane. Output voltage feedback input. Set the output voltage by selecting values for R1 and R2 using: 3 FB V R 1 = R 2 out - 1 1 . 23 V Connect the ground of the feedback network to a GND plane. Enable, active low. The enable pin is an active low control. Tie this pin above 2V to turn off the device. Tie this pin below 0.6V to enable the device. 5 EN Rev.C.02 3 AME, Inc. AME5104 n Ordering Information AME5104 x x x x xxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration 150KHz,3A PWM DC/DC Buck Converter Pin Configuration A (TO-263) Operating Ambient Package Type Temperature Range C: 0OC to 70OC D: TO-263 Number of Pins V: 5 Output Voltage Special Feature 1. IN 2. SW 3. GND 4. FB 5. EN 330: 500: 12A: ADJ: 3.3V 5V 12V Adjustable Z: Lead free 4 Rev.C.02 AME, Inc. AME5104 n Ordering Information Part Number AME5104ACDV330Z 150KHz,3A PWM DC/DC Buck Converter Marking* AME5104 ACDV330 yyww AME5104 ACDV500 yyww AME5104 ACDV12A yyww AME5104 ACDVADJ yyww Output Voltage 3.3V Package TO-263-5 Operating Ambient Temperature Range 0OC to 70O C AME5104ACDV500Z 5V TO-263-5 0OC to 70O C AME5104ACDV12AZ 12V TO-263-5 0OC to 70O C AME5104ACDVADJZ ADJ TO-263-5 0OC to 70O C Note: ww represents the date code. * A line on top of the first letter represents lead free plating such as A5104 ACDV330 yyww. Please consult AME sales office or authorized Rep./Distributor for the availability of package type. Rev.C.02 5 AME, Inc. AME5104 n Absolute Maximum Ratings Parameter Supply Voltage EN Pin Input Voltage Feedback Pin Voltage Output Voltage to Ground Operating Voltage 150KHz,3A PWM DC/DC Buck Converter Symbol VIN VEN VFB Vout VOP Maximum 40 -0.3~+25 -0.3~+25 -1 +4.5~+40 TBD* Unit V V V V V . ESD Classification Caution: Stree above the listed absolute maximum rating may cause permanent damage to the device. *HBM B: 2000~3999V n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range Storage Temperature Range Symbol TA TJ TSTG Rating 0 to 70 0 to 125 -65 to 150 Unit o C n Thermal Information Parameter Thermal Resistance* (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Solder Iron (10 Sec)** Package TO-263-5 TO-263-5 TO-263-5 Die Attach Symbol JC Maximum 3.5 Unit o Conductive Epoxy C/W JA PD 23 Internally Limited 350 W o C * Measure JC on center of molding compound if IC has no tab. ** MIL-STD-202G-210F 6 Rev.C.02 AME, Inc. AME5104 n Electrical Specifications Unless otherwise specified, VIN=12V for the 3.3V, 5V, and adjustable version and VIN=24V for the 12V version, ILOAD =500mA Parameter Symbol Test Condition VOUT=3.3V TJ =25 C O 150KHz,3A PWM DC/DC Buck Converter Min 3.168 Typ 3.3 Max 3.342 3.465 5.200 Units 4.75VVIN 36V, 0.2AILOAD 3A TA=0OC to 70OC Output Voltage VOUT VOUT=5V 7VVIN 36V, 0.2AILOAD3A VOUT=12V 15VVIN36V, 0.2AILOAD3A Feedback Trip Point VFB 3.135 4.800 5.0 4.750 11.52 12.0 11.40 1.193 1.23 TJ =25OC TA=0OC to 70OC TJ =25 C TA=0OC to 70OC TJ =25OC TA=0OC to 70OC O 5.250 V 12.48 12.60 1.290 1.310 73 80 % 90 77 10 50 100 173 173 1.4 1.5 nA KHz V VOUT programmed for 5V 8VVIN 36V, 0.2AILOAD3A VOUT=3.3V VIN=12V,ILOAD=3A VOUT=5V Efficiency VIN=12V,ILOAD=3A VOUT=12V VIN=25V,ILOAD=3A VOUT=5V VIN=12V,ILOAD=3A Adjustable Version Only, VFB=1.3V (Note 1) IOUT=2A(Note2,3) (Note 3) (Note 4) Peak Current (Note2,3) TJ =25OC TA=0OC to 70OC 3.6 TJ =25OC TA=0 C to 70 C TJ =25OC TA=0 C to 70 C TJ =25OC TA=0 C to 70 C O O O O O O Feedback Bias Current Oscillator Frequency Saturation Voltage Max. Duty Cycle (ON) Min. Duty Cycle (OFF) Current Limit Output Leakage Current IFB FOSC VSAT Dmax Dmin ICL IL IQ 127 110 150 1.3 100 % 0 5.5 4.5 6.5 50 5 10 A mA A Output=0V (Note 2,4) (Note 4) Quiescent Current Rev.C.02 7 AME, Inc. AME5104 n Electrical Specifications Parameter Shutdown current EN Input Threshold (High) EN Input Threshold (Low) EN Input Current(High) EN Input Current(Low) Symbol ISD VEH VEL IEH IEL Test Condition TJ=25 C EN pin=5V VIN=36V Low (Regulator ON) High (Regulator OFF) VEN =2.5V (Regulator OFF) VEN =0.5V (Regulator ON) 2.0 1.3 5 0.02 15 5 TA=0 C to 70 C O O O 150KHz,3A PWM DC/DC Buck Converter Min Typ 150 Max 250 300 0.6 Units A V A Note 1: The switching frequency is reduced when the second stage current limit is activated. Note 2: No diode, inductor or capacitor connected to output pin. Note 3: Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Note 4: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, ADJ. version, and 15V for the 12V version, to force the output transistor switch OFF. 8 Rev.C.02 AME, Inc. AME5104 n Characterization Curve Switch vs Saturation Voltage 1.4 VIN=12V 5.5 5.4 VIN =12V VOUT=5V 150KHz,3A PWM DC/DC Buck Converter Switch Current Limit Saturation Voltage(V) V OUT =5V Switch Current Limit(A) 1 2 3 1.3 1.2 1.1 1.0 0.9 0.8 0.7 5.3 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 0 4.4 -40 -25 0 25 75 125 Switch Current(A) Junction Temperature(J) IQ vs. Temperature 5.2 5.1 5.0 VIN =12V V FB=12V V OUT=5V Shutdown Quiescent Current 180 160 140 V EN =5V VOUT=5V Current(uA) 120 100 80 60 40 IQ(mA) 4.9 4.8 4.7 4.6 20 4.5 -40 -25 0 25 75 125 0 0 10 20 30 40 50 Temperature(J) Supply Voltage(V) Normalized Output Voltage 2.0 12 EN Pin Current(Sinking) VI N=36V VOUT =5V VFB=GND Output Voltage Change(%) 1.5 1.0 0.5 0 -0.5 -1.0 VIN=12V VOUT=5V I LOAD=200mA 10 Current(uA) 8 6 4 2 -1.5 -2.0 -40 0 -25 0 25 75 125 155 0 5 10 15 20 25 30 Junction Temperature(J) EN Pin Voltage(V) Rev.C.02 9 AME, Inc. AME5104 n Characterization Curve VFB vs. Temperature 1.28 1.27 1.26 1.25 VIN =12V VOUT=5V I LOAD=0. 5A 150KHz,3A PWM DC/DC Buck Converter Frequency vs VIN 171 167 163 VOUT =5V ILOAD=0.5A Frequency(KHz) -25 0 25 75 125 159 155 151 147 143 139 135 VFB (V) 1.24 1.23 1.22 1.21 1.20 131 1.19 -40 Temperature(J) 127 10 20 30 40 VIN(V) 10 Rev.C.02 AME, Inc. AME5104 n Tape and Reel Dimension TO-263-5 P 150KHz,3A PWM DC/DC Buck Converter PIN 1 AME AME W Carrier Tape, Number of Components Per Reel and Reel Size Package TO-263-5 Carrier Width (W) 24.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 800pcs Reel Size 3301 mm n Package Dimension TO-263-5 Top View A K E Side View Bottom View A1 SYMBOLS A B C D E G H K N P R A1 B1 MILLIMETERS MIN 10.050 8.280 4.310 0.660 1.140 14.600 1.143 0.330 2.280 0o 7.50 5.80 INCHES MIN 0.396 0.326 0.170 0.026 0.045 0.575 0.045 0.013 0.090 0o 0.295 0.228 MAX 10.668 9.169 4.670 0.910 1.400 15.875 1.680 0.580 2.800 8o 7.70 6.45 MAX 0.420 0.361 0.184 0.036 0.055 0.625 0.066 0.023 0.110 8o 0.303 0.254 B H B1 PIN 1 D G P N R 1.70REF 0.067 REF Front View C Rev.C.02 11 www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) AME, Inc. , April 2008 Document: OR2596-DS5104-C.02 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 |
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