AME, Inc. 5A Low Dropout AME1084 Positive Voltage Regulator General Description Functional Block Diagram Input Current Limiting

Size: px

Start display at page:

Download "AME, Inc. 5A Low Dropout AME1084 Positive Voltage Regulator General Description Functional Block Diagram Input Current Limiting"

Reynold Hines
5 years ago
Views:

1 General Description Functional Block Diagram The is a 5A low-dropout positive voltage regulator. It is available in fixed and adjustable output voltage versions. Overcurrent and thermal protection are integrated onto the chip. Output current will limit as it reaches the pre-set current or temperature limit. At full rated output current the dropout voltage is 1.4V (max.). series regulators provide excellent regulation over line, load and temperature variations. Current Limiting Amplifier Input Thermal Protection Output Features Low Dropout Voltage V at 5A Adjustable or 3.3V Fixed Voltage Line Regulation Typically 0.015% Load Regulation Typically 0.05% Adjust Pin (ADJ) Current Less than 90µA Overcurrent Protection Thermal Protection Available in TO-220, TO-263, TO-252 All AME s Lead Free Products Meet RoHS Standards Error Amp. Typical Application Bandgap Reference ADJ/GND V IN V OUT GND Applications 10mF Tan 10mF Tan Load High Efficiency Linear Regulators Post Regulators for Switching Supplies 5V to 3.3V Voltage Converter Battery Charger 1

Pin Configuration TO-220-3 Front View TO-252-2 Front View AMExxxx 1. ADJ / GND 2. OUT (TAB) 3. IN 1. ADJ / GND 2. OUT (TAB) 3. IN * Die Attach: Conductive Epoxy 1 2 3 * Die Attach: Conductive Epoxy 1 2 3 TO-252-3 Front View 1.

2 Pin Configuration TO Front View TO Front View AMExxxx 1. ADJ / GND 2. OUT (TAB) 3. IN 1. ADJ / GND 2. OUT (TAB) 3. IN * Die Attach: Conductive Epoxy * Die Attach: Conductive Epoxy TO Front View 1. ADJ / GND 2. OUT (TAB) 3. IN TO Front View 1. ADJ / GND 2. OUT (TAB) 3. IN * Die Attach: * Die Attach: Conductive Epoxy Conductive Epoxy TO Front View 1. ADJ / GND 2. OUT (TAB) 3. IN * Die Attach: Conductive Epoxy 2

3 Ordering Information x x x x - x x Special Feature2 Special Feature1 Number of Pins Package Type Operating Ambient Temperature Range Product Grade or Option Product Grade or Option Operating Ambient Temperature Range Package Type Number of Pins Special Feature1 Special Feature2 A: ADJ C: 0 O C to 70 O C B: TO-220 T: 3 3: TO Z: Lead Free B: 1.5V C: TO-252 TO C: 2.5V D: TO-263 D: 3.3V 3

4 Ordering Information (contd.) Part Number Marking* Output Voltage Package ACBT ACBTZ BCBT BCBTZ CCBT CCBTZ DCBT DCBTZ ECBT ECBTZ ACDT-3 ACDT-3Z ACBT ACBT BCBT BCBT CCBT CCBT DCBT DCBT ECBT ECBT ACDT-3 ACDT-3 Operating Ambient Temperature Range ADJ TO o C to 70 o C ADJ TO o C to 70 o C 1.5 TO o C to 70 o C 1.5 TO o C to 70 o C 2.5 TO o C to 70 o C 2.5 TO o C to 70 o C 3.3 TO o C to 70 o C 3.3 TO o C to 70 o C 1.8 TO o C to 70 o C 1.8 TO o C to 70 o C ADJ TO o C to 70 o C ADJ TO o C to 70 o C 4 Note: represents the date code * A line on top of the first letter represents lead free plating such as Please consult AME sales office or authorized Rep./Distributor for the availability of voltage and package type.

5 Ordering Information (contd.) Part Number Marking* Output Voltage Package BCDT-3 BCDT-3Z CCDT-3 CCDT-3Z DCDT-3 DCDT-3Z ECDT-3 ECDT-3Z ACDT ACDTZ BCDT BCDTZ CCDT CCDTZ BCDT-3 BCDT-3 CCDT-3 CCDT-3 DCDT-3 DCDT-3 ECDT-3 ECDT-3 ACDT ACDT BCDT BCDT CCDT CCDT Operating Ambient Temperature Range 1.5 TO o C to 70 o C 1.5 TO o C to 70 o C 2.5 TO o C to 70 o C 2.5 TO o C to 70 o C 3.3 TO o C to 70 o C 3.3 TO o C to 70 o C 1.8 TO o C to 70 o C 1.8 TO o C to 70 o C ADJ TO o C to 70 o C ADJ TO o C to 70 o C 1.5 TO o C to 70 o C 1.5 TO o C to 70 o C 2.5 TO o C to 70 o C 2.5 TO o C to 70 o C 5

6 Ordering Information Part Number Marking* Output Voltage Package DCDT DCDTZ ECDT ECDTZ ACCT ACCTZ BCCT BCCTZ CCCT CCCTZ DCCT DCCTZ ECCT ECCTZ DCDT DCDT ECDT ECDT ACCT ACCT BCCT BCCT CCCT CCCT DCCT DCCT ECCT ECCT Operating Ambient Temperature Range 3.3 TO o C to 70 o C 3.3 TO o C to 70 o C 1.8 TO o C to 70 o C 1.8 TO o C to 70 o C ADJ TO o C to 70 o C ADJ TO o C to 70 o C 1.5 TO o C to 70 o C 1.5 TO o C to 70 o C 2.5 TO o C to 70 o C 2.5 TO o C to 70 o C 3.3 TO o C to 70 o C 3.3 TO o C to 70 o C 1.8 TO o C to 70 o C 1.8 TO o C to 70 o C 6

7 Ordering Information Part Number Marking* Output Voltage Package DCCT-3Z DCCT-3 Operating Ambient Temperature Range 3.3 TO o C to 70 o C 7

8 Absolute Maximum Ratings Parameter Package Die Attach Symbol Maximum Unit Input Voltage V IN 12 V TO Thermal Resistance* (Junction to Case) TO TO TO TO Conductive Epoxy θ JC 5 5 o C/W TO Thermal Resistance (Junction to Ambient) TO TO TO TO Conductive Epoxy θ JA TO Internal Power Dissipation TO TO TO TO Conductive Epoxy P D 1200 mw 1700 Operating Junction Temperature Range Storage Temperature Range Solder Iron (10 Sec)** T J 0 to 125 T STG - 65 to o C Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device * Measure θ JC on backside center of tab. ** MIL-STD-202G 210F 8

9 Electrical Specifications Axxx Parameter Symbol Test Condition Min Typ Max Units Reference voltage (adjustable voltage) Parameter Symbol Test Condition Min Typ Max Units Output voltage (fixed voltage) Vo V IN = 3V, I O = 0A T J = 25 o C V 0 o C~70 o C V IN = V OUT +1.5V~12V, Line regulation Reg LINE 0 o C~70 o C % I O = 10mA Load regulation Dropout voltage VOUT, VREF = 1% Current limit I S V IN = V OUT +1.5V~12V 0 o C~70 o C A Temperature Coefficient T C V %/ o IN = V OUT +1.5V~12V, I O = 10mA~5A C Adjust pin current Adjust pin current change 0 o C~70 o C V IN = V OUT +1.5V~12V, I 0 o C~70 o ADJ C I O = 10mA~5A Temperature stability T S V IN = 5V, I O = 500mA 0 o C~70 o C % Minimum load current I O V IN = 5V ma RMS output noise V N T J = 25 o C %V O Ripple rejection ratio R A V IN = 5V, I O = 5A 0 o C~70 o C db Bxxx V REF Reg LOAD V D I ADJ V IN = V OUT +1.5V~12V, I O = 10mA V IN = V OUT +1.5V~12V, I O = 10mA~5A I O = 10mA ~ 5A V IN = V OUT +1.5V~12V, I O = 10mA~5A 0 o C~70 o C 0 o C~70 o C T J =25 o C o C~70 o C Line regulation Reg LINE V IN = 3V~12V, I O = 0A 0 o C~70 o C % 5 % V µa V Load regulation Dropout voltage VOUT, VREF = 1% V IN = 3V~12V Reg 0 o C~70 o LOAD C % I O = 0A~5A V D I O = 0A ~ 5A 0 o C~70 o C V Current limit I S V IN = 3V~12V 0 o C~70 o C A Quiescent current (fixed model) I V IN = 5V, I O = 0A~5A 0 o C~70 o Q C ma Temperature Coefficient T C V IN = 3V~12V, I O = 0A~5A %/ o C Temperature stability T S V IN = 5V, I O = 500mA 0 o C~70 o C % RMS output noise V N T J = 25 o C %V O Ripple rejection ratio R A V IN = 5V, I O = 5A 0 o C~70 o C db 9

10 Electrical Specifications (contd.) Cxxx Parameter Symbol Test Condition Min Typ Max Units Output voltage (fixed voltage) Parameter Symbol Test Condition Min Typ Max Units Output voltage (fixed voltage) T J = 25 o C Vo V IN = 4V~12V, I O = 0A V 0 o C~70 o C Line regulation Reg LINE V IN = 4V~12V, I O = 0A 0 o C~70 o C % Load regulation Reg LOAD V IN = 4V~12V I O = 0A~5A Dropout voltage VOUT, VREF = 1% Current limit I S V IN = 4V~12V 0 o C~70 o C A Quiescent current (fixed model) Temperature Coefficient T C V %/ o IN = 4V~12V, I O = 0A~5A C Temperature stability T S V IN = 5V, I O = 500mA 0 o C~70 o C % RMS output noise V N T J = 25 o C %V O Ripple rejection ratio R A V IN = 5V, I O = 5A 0 o C~70 o C db Dxxx Vo 0 o C~70 o C V D I O = 0A ~ 5A 0 o C~70 o C V I Q V IN = 5V, I O = 0A~5A 0 o C~70 o C T J = 25 o C V IN = 4.8V~12V, I O = 0A V 0 o C~70 o C Line regulation Reg LINE V IN = 4.8V~12V, I O = 0A 0 o C~70 o C % % ma Load regulation Reg LOAD V IN = 4.8V~12V I O = 0A~5A 0 o C~70 o C % Dropout voltage VOUT, VREF = 1% V D I O = 0A ~ 5A 0 o C~70 o C V Current limit I S V IN = 4.8V~12V 0 o C~70 o C A Quiescent current (fixed model) I Q V IN = 5V, I O = 0A~5A 0 o C~70 o C ma Temperature Coefficient T C V IN = 4.8V~12V, I O = 0A~5A %/ o C Temperature stability T S V IN = 5V, I O = 500mA 0 o C~70 o C % RMS output noise V N T J = 25 o C %V O Ripple rejection ratio R A V IN = 5V, I O = 5A 0 o C~70 o C db 10

11 Electrical Specifications Exxx Parameter Symbol Test Condition Min Typ Max Units Output voltage V O V IN = 3.3V~12V, I O = 0A T J = 25 o C o C~70 o C V Line regulation Reg LINE V IN = 3.3V~12V, I O = 0A 0 o C~70 o C Load regulation Reg LOAD V IN = 3.3V~12V I O = 0A~5A 0 o C~70 o C % Dropout voltage V D I O = 0A~5A, 0 o C~70 o C V Current limit I S V IN = 3.3V~12V 0 o C~70 o C A Quiescent Current I Q V IN = 5V, I O = 0A~5A 0 o C~70 o C ma Temp. Coefficient T C V IN = 3.3V~12V, I O = 0A~5A %/ºC Temperature stability T S V IN = 5V, I O = 500mA 0 o C~70 o C % RMS output noise V N T J = 25 o C %V O Ripple rejection ratio R A V IN = 5V, I O = 5A 0 o C~70 o C db 11

12 Application Description 1. Output Voltage Adjustment Like most regulators, the regulates the output by comparing the output voltage to an internally generated reference voltage. On the adjustable version, the V REF is available externally as 1.25V between V OUT and ADJ. The voltage ratio formed by R1 and R2 should be set to conduct 10mA (minimum output load). The output voltage is given by the following equation: V OUT = V REF ( 1 + R2 R1 ) + I ADJ x R2 On fixed versions of, the voltage divider is provided internally. 3. Current Limit Protection is protected against overload conditions. Current protection is triggered at typical 7.5A. 4. Stability and Load Regulation requires a capacitor from V OUT to GND to provide compensation feedback to the internal gain stage. This is to ensure stability at the output terminal. Typically, a 10µF tantalum or 50µF aluminum electrolytic is sufficient. (Note: It is important that the ESR for this capacitor does not exceed 0.5Ω.) V IN C 1 IN ADJ OUT V REF V OUT R1 The output capacitor does not have a theoretical upper limit and increasing its value will increase stability. C OUT = 100µF or more is typical for high current regulator design. I ADJ 50mA R2 For the adjustable version, the best load regulation is accomplished when the top of the resistor divider (R1) is connected directly to the output pin of the. When so connected, R P is not multiplied by the divider ratio. V OUT = V REF (1+ R2 R1 ) + I ADJ x R2 For fixed output versions, the top of R1 is internally connected to the output. The ground pin can be connected to low side of the load to eliminate ground loop errors. 2. Thermal Protection has thermal protection which limits junction temperature to 150 o C. However, device functionality is only guaranteed to a maximum junction temperature of +125 o C. V IN IN OUT R P Parasitic Line Resistance The power dissipation and junction temperature for in TO-220 package are given by ADJ R1 (Connect R1 to case) R L P D = (V IN - V OUT ) x I OUT T JUNCTION = T AMBIENT + ( P D x θ JA ) R2 Note: T JUNCTION must not exceed 125 o C Connect R2 to load 12

13 5. Thermal Consideration The series contain thermal limiting circuitry designed to protect itself for over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As mention in thermal protection section, we need to consider all sources of thermal resistance between junction and ambient. It includes junction-to-case, case-to-heat-sink interface and heat sink thermal resistance itself. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Proper mounting is required to ensure the best possible thermal flow from this area of the package to the heat sink. The case of all devices in this series is electrically connected to the output. Therefore, if the case of the device must be electrically isolated, a thermally conductive spacer is recommended. 13

14 Advanced Applications Adjustable Output Voltage V IN = 5V * V O = V V IN ADJ V OUT 10mF R1 1K 10mF 10mF ** R2 2K R2 Note: * V OUT = V REF ( 1 + ) + I ADJ x R2 R1 ** Optional for improved ripple rejection Paralleling Regulators V IN V IN GND V OUT R1 * 20mW V OUT I O = 0 to 10A 10mF 10mF V IN V OUT GND R2 * 20mW Note: * 20mΩ is ballast resistance The inter - connection of #18 wire could act as ballast resistance 14

15 Advanced Applications (contd.) Regulator with Reference V IN *V o V IN V OUT GND 10mF 10mF ** 1K Zener diode or voltage reference 10mF Note: * V O = V REF + V Z (V Z : breakdown voltage of Zener diode) ** Optional for improved ripple rejection Regulator with Reverse Diode Protection * V IN V IN V OUT V O GND 10mF 100mF 15

16 Performance Characteristics 1.30 Drop Out Voltage vs. Load Current 7 Minimum Operation Current vs. Input/OutputDifferential Voltage Drop-out Volatge (V) Load Current (A) Minimum Operation Current (ma) Input/Output Differential Voltage(V) 9 Output Short Circuit Current vs. Input/Output Differential Voltage Output Short Circuit Current (A) Input/Output Differential Voltage(V) 16

17 External Resistor Divider Table for Customized Voltage (contd.) R1 (Ohm) Vout R2(Ohm)=(Vout-1.25)*R1/( u*R1)

18 External Resistor Divider Table for Customized Voltage R1 (Ohm) Vout R2(Ohm)=(Vout-1.25)*R1/( u*R1)

19 Tape and Reel Dimension TO P PIN 1 W AME AME Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TO ±0.1 mm 4.0±0.1 mm 2500pcs 330±1 mm TO P PIN 1 W AME AME Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TO ±0.1 mm 4.0±0.1 mm 2500pcs 330±1 mm 19

20 Tape and Reel Dimension TO P PIN 1 W Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TO ±0.1 mm 4.0±0.1 mm 800pcs 330±1 mm AME AME AME AME AME AME TO P PIN 1 W Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TO ±0.1 mm 4.0±0.1 mm 800pcs 330±1 mm 20

21 Package Dimension TO Top View E K L Side View B A SYMBOLS MILLIMETERS INCHES MIN MAX MIN MAX A B C D D1 E1 F E F G H - * * PIN 1 J H G C D J K L 1.40 REF REF D REF REF E *: Typical Value Notes: 1. Controlling dimension: Millimeters. 2. Maximum lead thickness includes lead finish thickness Minimum lead thickness is the minimum thickness of base material. TO Top View G Side View C D Bottom View SYMBOLS MILLIMETERS INCHES MIN MAX MIN MAX A I P A P1 C D E PIN 1 M G1 G I K O M N N K E O P P G

22 Package Dimension TO SYMBOLS MILLIMETERS INCHES MIN MAX MIN MAX Top View Side View Bottom View A K A E B C D B H A2 B2 E G * 2.54 * H PIN 1 D G P R N K N REF REF P Front View R 0 o 8 o 0 o 8 o C B A *: Typical Value Notes: 1. Controlling dimension: Millimeters. 2. Maximum lead thickness includes lead finish thickness Minimum lead thickness is the minimum thickness of base material. K TO Top View A Side View E Bottom View SYMBOLS MILLIMETERS INCHES MIN MAX MIN MAX A B C B H B1 A2 D E G * 2.54 * H PIN 1 D G Front View C P R N K N P R 0 o 8 o 0 o 8 o B A *: Typical Value Notes: 1. Controlling dimension: Millimeters. 2. Maximum lead thickness includes lead finish thickness Minimum lead thickness is the minimum thickness of base material. 22

23 Life Support Policy: These products of are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of 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., June 2008 Document: 1012-DS1084-N.03 Corporate Headquarter 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: Fax:

AME 1.5A CMOS LDO AME8815. n General Description. n Functional Block Diagram. n Features. n Typical Application. n Applications

AME 1.5A CMOS LDO AME8815. n General Description. n Functional Block Diagram. n Features. n Typical Application. n Applications n General Description n Functional Block Diagram The family of linear regulators feature low quiescent current (45µA typ.) with low dropout voltage, making them ideal for battery applications. It is available