AME431BBJETA12

AME, Inc. AME431B Adjustable Precision Shunt Regulator n General Description The AME431B series ICs are 3-terminal adjustable shunt regulator with guaranteed temperature stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impendance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger and other adjustable regulators. The reference is set to 1.24V for AME431Bxxxxx12 and 2.5V for AME431Bxxxxx25. The output voltage can be set to 1.24V to 16V for VREF=1.24V part type and 2.5 to 36V for VREF=2.5V part type with two external resistors. The AME431B precision reference is offered in two reference tolerance: 0.5% and 1.0% The 5 main packages have low thermal impendance which allows operation over a wide range of -40oC t o +125oC. n Functional Block Diagram V+ (Cathode) REF VREF GND (Anode) n Features l Very accurate reference voltage : 0.15% typical l High stability under capacitive load l Low temperature deviation: 4.5mV typical l Low equivalent full-range temperature coefficient with 20PPM/oC typical l Low dynamic output resistance: 0.2Ω typical l Sink current capacity from 1mA to 100mA l Low output noise l Available in 5 packages: TO-92, SOT-23-3, SOT-89, SO-8 and SOT-25 n Applications l Adjustable power supplies l Linear regulators l Battery operated computer l Portable electronics l l l l l Instrumentation Switching power supply Mother board LCD monitor Note book computer 1 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Typical Applications Shunt Regulator R3 VIN VOUT R1 VREF VO=(1+R1/R2) VREF AME431B R2 High Current Shunt Regulator R1 VOUT R4 R2 VO =(1+R2/R3) VREF VREF AME431B R3 VIN Current Source or Current Limit VIN R2 IOUT R1 IOUT =VREF/R2+IKA AME431B 2 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Typical Applications (contd.) Precision 5V 1.5A Regulator VIN R1 8.2K AME1117 Adjust R2 250 VOUT 5V, 1.5A AME431B R3 250 Precision 5V 1.5A Regulator R3 C1 R2 680 R5 R1 COMP R4 VOUT U2 3 4 C2 Q1 2 AME431B R6 PWM Controller VFB PS521 3 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Pin Configuration SOT-23 Top View 3 SOT-23 Top View AME431BAJETXXXX 1. Cathode 2. REF 3. Anode 3 AME431B AME431B AME431BBJETXXXX 1. REF 2. Cathode 3. Anode 1 2 1 2 SOT-89 Front View AME431BAJFTXXXX 1. REF 2. Anode 3. Cathode TO-92-3 Bottom View 1 2 3 AME431B AME431BAJATXXXX 1. REF 2. Anode 3. Cathode 1 2 3 SO-8 Top View 8 7 6 5 SOT-25 Top View AME431BAJHAXXXX 1. Cathode 2. Anode 3. Anode 4. NC 5. NC 6. Anode 7. Anode 8. REF 5 4 AME431B AME431B 1 2 3 AME431BAJEVXXXX 1. NC 2. NC 3. Cathode 4. REF 5. Andode 1 2 3 4 4 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Ordering Information 431B x x x x x x x Special Feature Reference Voltage Accuracy Number of Pins Package Type Operating Temperature Range Pin Configuration Operating Temperature Range J: -40OC to 125OC Number Accuracy of Pins A: 8 T: 3 V: 5 A: 0.5% B: 1.0% Pin Configuration A (SOT-23) Package Type Reference Voltage 12: 1.24V 25: 2.5V Special Feature 1. Cathode 2. REF 3. Anode 1. REF 2. Cathode 3. Anode 1. REF 2. Anode 3. Cathode 1. REF 2. Anode 3. Cathode 1. Cathode 2. Anode 3. Anode 4. NC 5. NC 6. Anode 7. Anode 8. REF 1. NC 2. NC 3. Cathode 4. REF 5. Anode A: E: F: H: TO-92 SOT-2X SOT-89 SO-8 L: Low profile Y: Lead free & Low profile Z: Lead free B (SOT-23) A (SOT-89) A (TO-92-3) A (SO-8) A (SOT-25) 5 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Ordering Information (contd.) Part Number AME431BAJETA12 AME431BAJETA12L AME431BAJETA12Y AME431BAJETA12Z AME431BAJETB12 AME431BAJETB12L AME431BAJETB12Y AME431BAJETB12Z AME431BBJETA12 AME431BBJETA12L AME431BBJETA12Y AME431BBJETA12Z AME431BBJETB12 AME431BBJETB12L AME431BBJETB12Y AME431BBJETB12Z Marking* AZNww AZNww AZNww AZNww AZOww AZOww AZOww AZOww AZPww AZPww AZPww AZPww AZQww AZQww AZQww AZQww Reference Voltage Accuracy Package 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 0.5% 0.5% 0.5% 0.5% 1.0% 1.0% 1.0% 1.0% 0.5% 0.5% 0.5% 0.5% 1.0% 1.0% 1.0% 1.0% SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 Temp. Range - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC * Package Options Part Number AME431BXEAX AME431BXEAX-1 Package TO-92 Taping TO-92 Bulk Lead Pitch 5.04mm 2.54mm Note: yyww & ww represents the date code * A line on top of the first letter represents lead free plating such as AZN Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability. 6 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Ordering Information (contd.) Part Number AME431BAJATA12 Marking* AME12 431B AJATA yyww AME12 431B AJATA yyww AME12 431B AJATB yyww AME12 431B AJATB yyww BAFww BAFww BAFww BAFww BAGww BAGww BAGww BAGww AZAww AZAww AZAww AZAww AZBww AZBww AZBww AZBww Reference Voltage Accuracy Package 1.24V 0.5% TO92-3 Temp. Range - 40oC to + 125oC AME431BAJATA12Z 1.24V 0.5% TO92-3 - 40oC to + 125oC AME431BAJATB12 1.24V 1.0% TO92-3 - 40oC to + 125oC AME431BAJATB12Z 1.24V 1.0% TO92-3 - 40oC to + 125oC AME431BAJETA25 AME431BAJETA25L AME431BAJETA25Z AME431BAJETA25Y AME431BBJETA25 AME431BBJETA25L AME431BBJETA25Z AME431BBJETA25Y AME431BAJETB25 AME431BAJETB25L AME431BAJETB25Z AME431BAJETB25Y AME431BBJETB25 AME431BBJETB25L AME431BBJETB25Z AME431BBJETB25Y 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% SOT-23 TSOT-23 SOT-23 TSOT-23 SOT-23 TSOT-23 SOT-23 TSOT-23 SOT-23 TSOT-23 SOT-23 TSOT-23 SOT-23 TSOT-23 SOT-23 TSOT-23 - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to + 125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC 7 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Ordering Information (contd.) Part Number AME431BAJATB25 Marking* AME25 431B AJATB yyww AME25 431B AJATB yyww AME25 431B AJATA yyww AME25 431B AJATA yyww BAWww BAWww BAWww BAWww BAVww BAVww BAVww BAVww Reference Voltage Accuracy Package 2.5V 1.0% TO92-3 Temp. Range - 40oC to +125oC AME431BAJATB25Z 2.5V 1.0% TO92-3 - 40oC to +125oC AME431BAJATA25 2.5V 0.5% TO92-3 - 40oC to +125oC AME431BAJATA25Z 2.5V 0.5% TO92-3 - 40oC to +125oC AME431BAJEVA12 AME431BAJEVA12L AME431BAJEVA12Z AME431BAJEVA12Y AME431BAJEVB12 AME431BAJEVB12L AME431BAJEVB12Z AME431BAJEVB12Y 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 0.5% 0.5% 0.5% 0.5% 1.0% 1.0% 1.0% 1.0% SOT-25 TSOT-25 SOT-25 TSOT-25 SOT-25 TSOT-25 SOT-25 TSOT-25 - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC - 40oC to +125oC 8 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Absolute Maximum Ratings Parameter Cathode Current AME431Bxxxxx25 AME431Bxxxxx12 Cathode Voltage AME431Bxxxxx25 40 150 18 Maximum AME431Bxxxxx12 100 Unit mA V Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device n Recommended Operating Conditions Parameter Supply Current Rating 1 ~ 100 AME431Bxxxxx12 1.24 to 16 Unit mA Operation Voltage Range AME431Bxxxxx25 Ambient Temperature Range Junction Temperature -40 to +125 -40 to +125 2.50 to 36 V o C C o n Thermal Information Parameter SOT-23 SOT-25 Thermal Resistance SOT-89 TO-92 SO-8 Maximum Junction Temperature Maximum Lead Temperature (10 Sec) Maximum 325 325 180 180 124 150 300 Unit o C/W o o C C 9 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Electrical Specifications (AME431Bxxxxx25) TA = 250C, IREF=10mA unless otherwise specified Parameter Reference Voltage 0.5% 1.0% Test Symbol Circuit 1 VREF ∆ VREF Test Condition VKA = VREF, IKA=10mA VKA = VREF IKA=10mA ∆ VREF ∆ VKA 0oC ~ +70oC -40 C ~ +125 C ∆ VKA= 2 IKA=10mA 10V to VREF ∆ VKA= 36V to 10V o o Min 2.4875 2.475 - Typ Max Units V 2.500 2.5125 2.500 4.5 4.5 -1.0 -0.5 0.7 2.525 8 10 -2.7 Deviation of Reference Voltge Over Temperature Ratio of Change in Reference Voltage to the Change in Cathode Voltage 1 mV mV/V -2.0 4.0 µA Reference Current Deviation of Reference Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current 2 IREF IKA=10mA R1=10K Ω, R2=∞ R1=10K Ω, R2= ∞ IKA=10mA TA= -40 C ~ +125 C o o 2 ∆ IREF IKA (MIN) IKA (OFF) ZKA - 0.4 1.2 µA 1 VKA=VREF - 0.4 1.0 mA µA 3 VKA=36V,VREF =0V VKA = VREF , IKA=1 to 100mA F< 1KHz - 0.05 1.0 Dynamic Impendance 1 - 0.15 0.5 Ω VIN R1 VKA VIN R3 V KA IKA R1 IREF VKA=VREF (1+R1/R2)+IREFR1 VIN IOFF VKA IKA R2 VREF VREF Figure1. Test Circuit4 for VKA=VREF 10 Figure2. Test Circuit for VKA>VREF Figure3. Test Circuit for IOFF AME, Inc. AME431B Adjustable Precision Shunt Regulator n Electrical Specifications (AME431Bxxxxx12) TA = 250C, IREF=10mA unless otherwise specified P arameter Reference Voltage 0.5% 1.0% Test Symbol Circuit 1 VREF ∆ VREF Test Condition VKA - VREF , IKA=10mA VKA = VREF IKA=10mA ∆ VREF ∆ VKA 0oC ~ +70oC -40 C ~ +85 C ∆ VKA = 2 IKA=10mA 5V to VREF ∆ VKA = 16V to 5V 2 IREF IKA=10mA R1=10K Ω, R2=∞ R1=10K Ω, R2= ∞ 2 ∆ IREF IKA (MIN) IKA (OFF) ZKA IKA=10mA TA= -40 C ~ +85 C Minimum Cathode Current for Regulation Off-State Cathode Current 1 3 VKA=VREF VKA=18V, VREF =0V VKA = VREF , IKA=1 to 100mA F< 1KHz 55 0.04 80 0.1 µA µA o o o o Min Typ Max 1.246 Units V 1.234 1.240 1.228 1.240 1.252 2 3 -0.5 -0.5 0.15 10 10 -1.5 Deviation of Reference Voltge Over Temperature Ratio of Change in Reference Voltage to the Change in Cathode Voltage Reference Input Current Deviation of Reference Current Over Full Temperature Range 1 mV mV/V -1.5 0.4 µA - 0.1 0.4 µA Dynamic Impendance 1 - 0.05 0.15 Ω 11 AME, Inc. AME431B Cathode Current vs. Cathode Voltage 150 Adjustable Precision Shunt Regulator Current vs. Cathode Voltage 800 VKA=VREF C a th od e C urre n t ( u A) V KA=VREF T A= 25oC C ath o de C urren t ( mA ) T A= 25oC 100 600 50 400 340 200 0 0 -50 -200 -100 -2 -1 0 1 2 3 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.495 Cathode Voltage (V) Cathode Voltage (V) Reference Current vs. Temperature 1.7 1.6 2.520 2.515 Reference Voltage vs. Cathode Current Ref erence Cur rent (u A) 1.5 1.4 1.3 1.2 1.1 1.0 -45 Ref erence Vo ltag e (V) 2.510 2.505 2.500 2.495 2.490 2.485 2.480 10 -5 25 55 85 115 125 20 30 40 50 60 70 80 90 100 110 Temperature (oC) Cathode Current (mA) Small Signal Voltage Gain vs. Frequency In pu t an d Ou tp u t Vo ltag e (V) 5 220 Output Input 4 3 Pulse Generator f=100KHz 50 2 Output 1 0 GND 0 2 4 6 Time (uS) 12 AME, Inc. AME431B Adjustable Precision Shunt Regulator Small Signal Voltage Gain vs. Frequency 1K 60 10K 100K 1000K 60 50 T A= 25oC IKA= 10mA 50 Output 15K 10uF IKA 242 40 40 Av ( dB ) 30 30 20 20 8.2K 10 10 0 1K 0 10K 100K 1000K GND Small Signal Frequency Reference Impedance vs. Frequency 1K Ref er ence Imp edan ce (Ω ) IKA= 10mA 10 TA= 25oC Output IK A 50 1 0.1 1K 10K 100K 1000K GND Frequency (Hz) Stability Boundary Conditions vs. Load Capacitance 100 90 C ath od e Cu rren t ( mA ) 80 70 60 50 40 30 20 10 A: - - - VKA=5V B: ___ VKA=10V VKA=15V: No oscillation R1(10K) IKA 150 A R2 B 0.1uF 1uF 2uF 0 0.01uF Load Capacitance 13 AME, Inc. AME431B Impedance vs. Temperature 0.25 2.510 Adjustable Precision Shunt Regulator Reference Voltage vs. Temperature Im ped ance ( 1mA-100m A) oh m 0.20 2.505 VKA= VREF IKA=10mA 0.15 R e fe r e nc e V olt a ge ( V ) -5 25 55 85 115 125 2.500 0.10 2.495 0.05 2.490 0.00 -45 2.485 -45 -5 25 55 85 115 125 Temperature (oC) Temperature (oC) Delta Reference Voltage vs. Temperature 0 -0.1 70 60 Off-State Current vs. Temperature Delt a Vref /Delt a VK ( mV /V ) -0.2 Off -S tat e Cu rrent ( nA ) -5 25 55 85 115 125 50 40 30 20 10 0 -45 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9 -45 -5 25 55 85 115 125 Temperature ( o C) Temperature (oC) 14 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Package Dimension TO-92-3 (bulk pack) SYMBOLS A b E e e1 L R MILLIMETERS MIN MAX 4.95 0.51 3.94 2.67 1.40 15.49 2.41 0.56 4.95 INCHES MIN 0.1701 0.0142 0.1299 0.0949 0.0449 0.5000 0.0850 0.0161 0.1752 MAX 0.1949 0.0201 0.1551 0.1051 0.0551 0.6098 0.0949 0.0220 0.1949 Top View 4.32 0.36 3.30 2.41 1.14 12.70 2.16 0.41 4.45 Side View W D Notes: 1. Package outline exclusive of any mold flashes dimension. 2. Package outline exclusive of burr dimension. 3. Lead pitch=2.54mm is bulk pack. 4. Lead pitch=5.08mm is tape pack. TO-92-3 (tape pack) SYMBOLS A b E e e1 L R W D MILLIMETERS MIN MAX 4.95 0.51 3.94 5.08 2.54 15.49 2.41 0.56 4.95 INCHES MIN 0.1701 0.0142 0.1299 0.1961 0.0980 0.5000 0.0850 0.0161 0.1752 MAX 0.1949 0.0201 0.1551 0.2000 0.1000 0.6098 0.0949 0.0220 0.1949 Top View 4.32 0.36 3.30 4.98 2.49 12.70 2.16 0.41 4.45 Side View Notes: 1. Package outline exclusive of any mold flashes. 2. Package outline exclusive of burr dimension. 3. Lead pitch=2.54mm is bulk pack. 4. Lead pitch=5.08mm is tape pack. 15 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Package Dimension SOT-23 Top View D Side View C SYMBOLS L MILLIMETERS MIN 1.00 0.00 0.35 0.09 2.70 1.40 INCHES MIN 0.0394 0.0000 0.0138 0.0035 0.1063 0.0551 MAX 1.40 0.15 0.50 0.25 3.10 1.80 MAX 0.0551 0.0059 0.0197 0.0098 0.1220 0.0709 A A1 b C D E e H θ1 E e H L 1.90 BSC 2.40 3.00 0.0748 BSC 0.09449 0.11811 0.0138BSC 0o 10o Front View 0.35BSC 0o 10o A ?1 A1 Top View D b TSOT-23 Side View C SYMBOLS L MILLIMETERS MIN MAX 1.30 0.50 0.25 3.10 1.80 INCHES MIN 0.0315 0.0138 0.0031 0.1063 0.0472 MAX 0.0512 0.0197 0.0098 0.1220 0.0709 A+A1 E H 0.80 0.35 0.08 2.70 1.20 b C D E θ1 e e H L 1.90 BSC 2.40 3.00 0.0748 BSC 0.09449 0.11811 0.0138BSC o Front View 0.35BSC 0 o 16 A1 b A θ1 10 0 o 10 o AME, Inc. AME431B Adjustable Precision Shunt Regulator n Package Dimension SOT-89 Top View D D1 H POLISH Side View SYMBOLS A A1 C D MILLIMETERS MIN 1.39 INCHES MIN MAX MAX 1.60 0.05472 0.06299 0.0315REF 0.01378 0.01732 0.17283 0.1811 0.8REF 0.35 4.39 1.35 2.28 0.44 4.60 1.83 3.60 E A1 D1 E C 0.05315 0.07205 0.08976 0.14173 0.1181REF 0.0276REF 0.0590REF S1 e Front View MATTE FINISH e H S1 3.00REF 0.70REF 1.50REF A POLISH SO-8 Top View Side View C SYMBOLS A MILLIMETERS MIN 5.58 3.55 0.50 0.30 9.65 3.53 0.50 1.14 2.28 12.70 14.22 INCHES MIN 0.2197 0.1398 0.0197 0.0118 0.3799 0.1390 0.0197 0.0449 0.0898 0.5000 0.5600 MAX 7.49 4.83 1.40 1.15 10.67 4.09 1.15 1.78 2.80 14.74 16.51 MAX 0.2949 0.1900 0.0550 0.0453 0.4200 0.1610 0.0453 0.0700 0.1102 0.5803 0.6500 E C D E D θ Front View 7o(4X) L G I K M N A2 A O A1 e B P 17 AME, Inc. AME431B Adjustable Precision Shunt Regulator n Package Dimension SOT-25 Top View D L Side View SYMBOLS A MILLIMETERS MIN MAX INCHES MIN MAX 1.20REF 0.00 0.30 2.70 1.40 0.15 0.55 3.10 1.80 0.0472REF 0.0000 0.0118 0.1063 0.0551 0.0059 0.0217 0.1220 0.0709 H E A1 b D S1 e θ1 E e H L θ1 1.90 BSC 2.60 3.00 0.07480 BSC 0.10236 0.11811 0.0146BSC o Front View A 0.37BSC 0 o 10 0o 10o S1 0.95BSC 0.0374BSC b TSOT-25 Top View D L Side View A1 SYMBOLS A+A1 MILLIMETERS MIN 0.90 0.30 2.70 1.40 INCHES MIN 0.0354 0.0118 0.1063 0.0551 MAX 1.25 0.50 3.10 1.80 MAX 0.0492 0.0197 0.1220 0.0709 H b D E S1 e θ1 E e H L θ1 1.90 BSC 2.40 3.00 0.07480 BSC 0.09449 0.11811 0.0138BSC o 0.35BSC 0 o Front View A 10 0o 10o S1 0.95BSC 0.0374BSC b 18 A1 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. © AME, Inc. , December 2004 Document: BCD-DS431B-D Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 U.S.A.(Subsidiary) Analog Microelectronics, Inc. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489