AME Adjustable Precision Shunt Regulator AME431B-1.24V 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. n Functional Block Diagram Cathode REF The reference is set to 1.24V for AME431Bxxxxx12. The output voltage can be set to 1.24V to 16V for VREF=1.24V part type with two external resistors. VREF 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 Anode +125oC. n Features n Applications l Very Accurate Reference Voltage : 0.15% Typical l Adjustable Power Supplies l High Stability under Capacitive Load l Linear Regulators l Low Temperature Deviation: 4.5mV Typical l Battery Operated Computer 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 7 Packages: TO-92, SOT-23, TSOT-23, SOT-89, SOP-8 and SOT-25, TSOT-25 l All AME’ s Lead Free Products Meet RoHS l Portable Electronics l l l l l Instrumentation Switching Power Supply Mother Board LCD Monitor Note Book Computer Standards Rev.E.04 1 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Typical Applications Shunt Regulator R3 VIN VOUT R1 VO=(1+R1/R2) VREF VREF AME431B R2 High Current Shunt Regulator VIN R1 VOUT R4 R2 VO =(1+R2/R3) VREF VREF AME431B R3 Current Source or Current Limit R2 VIN IOUT IOUT =VREF/R2+IKA R1 AME431B 2 Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Typical Applications (contd.) Precision 5V 1.5A Regulator VIN AME1117 VOUT 5V, 1.5A Adjust R1 8.2K R2 250 AME431B R3 250 Precision 5V 1.5A Regulator R3 C1 R4 R2 680 VOUT R5 U2 R1 C2 Q1 3 COMP PWM Controller R6 2 AME431B VFB 4 PS521 Rev.E.04 3 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Pin Configuration SOT-23 TSOT-23 Top View SOT-23 TSOT-23 Top View 3 AME431BAJETXXXX AME431BBJETXXXX 3 1. Cathode 1. REF 2. REF AME431B 3. Anode 2. Cathode AME431B * Die Attach: 1 2 Conductive Epoxy AME431BAJFTXXXX 2 3 2 5 4 1. REF Conductive Epoxy AME431BAJEVXXXX 1. NC 2. Anode 3. Cathode 1 * Die Attach: 1 SOT-25 TSOT-25 Top View SOT-89 Top View AME431B 3. Anode 2. NC AME431B 3. Cathode 4. REF * Die Attach: Conductive Epoxy 5. Andode 1 2 3 * Die Attach: Non-Conductive Epoxy SOP-8 Top View 8 7 6 TO-92-3 Top View 5 AME431BAJHAXXXX AME431BAJATXXXX 1. Cathode 2. Anode AME431B 1. REF AME431B 3. Anode 3. Cathode 4. NC 5. NC * Die Attach: 6. Anode 1 2 3 4 2. Anode Conductive Epoxy 7. Anode 8. REF * Die Attach: 1 2 3 Conductive Epoxy 4 Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Ordering Information AME431B x x x x x xx x - x Special Feature2 Special Feature1 Reference Voltage Accuracy Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration Operating Ambient Temperature Range Package Type Number Reference of Accuracy Voltage Pins Special Feature1 Special Feature2 (For TO-92 Package Only) Package Lead Pitch A (SOT-23) (TSOT-23) B (SOT-23) (TSOT-23) A (SOT-89) A (TO-92-3) A (SOP-8) A (SOT-25) (TSOT-25) 1. Cathode 2. REF 3. Anode J: -40OC to +125OC A: E: F: H: TO-92 SOT-2X SOT-89 SOP A: 8 T: 3 V: 5 A: 0.5% B: 1.0% 12: 1.24V L: Low profile Y: Lead free & Low profile Z: Lead free N/A: 1: Taping Bulk 5.08mm 2.54mm 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 Rev.E.04 5 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Ordering Information (contd.) Part Number Marking* Reference Operating Ambient Accuracy Package Voltage Temperature Range AME431BAJETA12 AZNww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BAJETA12L AZNww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BAJETA12Y AZNww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BAJETA12Z AZNww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BAJETB12 AZOww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BAJETB12L AZOww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BAJETB12Y AZOww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BAJETB12Z AZOww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BBJETA12 AZPww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BBJETA12L AZPww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BBJETA12Y AZPww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BBJETA12Z AZPww 1.24V 0.5% SOT-23 - 40oC to +125oC AME431BBJETB12 AZQww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BBJETB12L AZQww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BBJETB12Y AZQww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BBJETB12Z AZQww 1.24V 1.0% SOT-23 - 40oC to +125oC AME431BAJEVA12 BAWww 1.24V 0.5% SOT-25 - 40oC to +125oC AME431BAJEVA12L BAWww 1.24V 0.5% TSOT-25 - 40oC to +125oC AME431BAJEVA12Z BAWww 1.24V 0.5% SOT-25 - 40oC to +125oC AME431BAJEVA12Y BAWww 1.24V 0.5% TSOT-25 - 40oC to +125oC Note: yyww & ww represents the date code and pls refer to Date Code Rule before Package Dimension. * 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 Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Ordering Information Part Number Marking* Reference Operating Ambient Accuracy Package Voltage Temperature Range AME431BAJEVB12 BAVww 1.24V 1.0% SOT-25 - 40oC to +125oC AME431BAJEVB12L BAVww 1.24V 1.0% TSOT-25 - 40oC to +125oC AME431BAJEVB12Z BAVww 1.24V 1.0% SOT-25 - 40oC to +125oC AME431BAJEVB12Y BAVww 1.24V 1.0% TSOT-25 - 40oC to +125oC AME431BAJFTA12Z A431B BKYww 1.24V 0.5% SOT-89 - 40oC to +125oC 1.24V 0.5% TO92-3 - 40oC to +125oC 1.24V 0.5% TO92-3 - 40oC to +125oC 1.24V 1.0% TO92-3 - 40oC to +125oC 1.24V 1.0% TO92-3 - 40oC to +125oC AME431BAJATA12Z AME431BAJATA12Z-1 AME431BAJATB12Z AME431BAJATB12Z-1 Rev.E.04 AME12 431B AJATA yyww AME12 431B AJATA yyww AME12 431B AJATB yyww AME12 431B AJATB yyww 7 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Absolute Maximum Ratings Parameter Maximum Unit Cathode Current 100 mA Cathode Voltage 18 V Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device n Recommended Operating Conditions Parameter Supply Current Operation Voltage Range 8 Rating Unit 1 to 100 mA 1.24 to 16 V Ambient Temperature Range TA -40 to +125 o Junction Temperature Range TJ -40 to +125 o Storage Temperature Range TSTG -65 to +150 o C C C Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Thermal Information Parameter Package Die Attach Symbol SOT-23** TSOT-23 SOT-89* Thermal Resistance (Junction to Case) 40 Conductive Epoxy θJC SOP-8** SOT-89 Non-Conductive Epoxy 140 o 180 Conductive Epoxy θJA SOP-8 SOT-89 Non-Conductive Epoxy 280 400 550 Conductive Epoxy TO-92-3 PD SOP-8 SOT-25 TSOT-25 150 150 SOT-23 TSOT-23 Internal Power Dissipation C/W 260 TO-92-3 SOT-25 TSOT-25 80 60 SOT-23 TSOT-23 Thermal Resistance (Junction to Ambient) Unit 81 TO-92-3** SOT-25** TSOT-25 Maximum 625 mW 810 Non-Conductive Epoxy 400 Maximum Junction Temperature 150 o C Solder Iron (10 Sec)*** 350 o C * Measure θJC on backside center of tab. ** Measure θJC on center of molding compound if IC has no tab. *** MIL-STD-202G210F Rev.E.04 9 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Electrical Specifications TA = 250C, IREF=10mA unless otherwise specified Test Symbol Circuit Parameter Reference Voltage 0.5% 1.0% Deviation of Reference Voltge Over Temperature 1 VREF 1 ∆VREF Min VKA - VREF , IKA=10mA o o -40 C ~ +85 C ∆VKA = 2 Reference Input Current 2 ∆VREF ∆VKA 5V to VREF ∆VKA = IKA=10mA 16V to 5V IREF Typ Max 1.234 1.240 1.246 1.228 1.240 1.252 0oC ~ +70oC VKA = VREF IKA=10mA Ratio of Change in Reference Voltage to the Change in Cathode Voltage Deviation of Reference Current Over Full Temperature Range Test Condition IKA=10mA R1=10KΩ, R2=∞ Units V - 2 10 - 3 10 - -0.5 -1.5 - -0.5 -1.5 - 0.15 0.4 µA - 0.1 0.4 µA mV mV/V R1=10KΩ, R2= ∞ 2 ∆IREF IKA=10mA o o TA= -40 C ~ +85 C 10 Minimum Cathode Current for Regulation 1 IKA (MIN) VKA=VREF - 55 80 µA Off-State Cathode Current 3 IKA (OFF) VKA=18V, VREF =0V - 0.04 0.1 µA Dynamic Impendance 1 ZKA VKA = VREF , IKA=1 to 100mA F<1KHz - 0.05 0.15 Ω Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V Current vs. Cathode Voltage Cathode Current vs. Cathode Voltage 800 VKA=VREF VKA=VREF 100 Cathode Current (µA) Cathode Current (mA) 150 T A= 25oC 50 0 -50 -100 -1.2 -1 -0.8 -0.2 0.2 0.6 1 600 T A= 25 oC 400 200 0 -200 -0.7 1.4 -0.5 Cathode Voltage (V) Reference Current vs. Temperature 0.5 1.24 1.1 Reference Voltage vs. Cathode Current 1.250 1.7 1.248 1.6 Reference Voltage (V) Reference Current (µA) 0 Cathode Voltage (V) 1.5 1.4 1.3 1.2 1.1 1.246 1.244 1.242 1.240 1.238 1.236 1.234 1.0 -45 -5 25 55 85 115 125 o Temperature ( C) 1.232 10 20 30 40 50 60 70 80 90 100 110 Cathode Current (mA) Input and Output Voltage (V) Small Signal Voltage Gain vs. Frequency 5 220 Input Output 4 Pulse Generator f=100KHz 3 50 2 1 0 Output GND 0 2 4 6 Time (µS) Rev.E.04 11 AME Adjustable Precision Shunt Regulator AME431B-1.24V Small Signal Voltage Gain vs. Frequency 1K 60 10K 100K 1000K T A= 25oC 50 60 50 Output Av (dB) IKA= 10mA 40 40 30 30 20 20 10 10 IKA 15K 242 10uF 8.2K 0 1K 0 10K 100K GND 1000K Small Signal Frequency Reference Impedance vs. Frequency Reference Impedance (Ω) 1K IKA= 10mA TA= 25oC 10 Output IK A 50 1 0.1 1K 10K 100K GND 1000K Frequency (Hz) Stability Boundary Conditions vs. Load Capacitance 100 Cathode Current (mA) 90 80 70 A: - - - VKA=5V B: ___ VKA=10V VKA=15V: No oscillation R1(10K) IKA 150 60 50 40 A 30 R2 20 10 0 0.01uF B 0.1uF 1uF 2uF Load Capacitance 12 Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V Reference Voltage vs. Temperature 1.250 0.25 Reference Voltage (V) Impedance (1mA-100mA) ohm Impedance vs. Temperature 0.20 0.15 0.10 0.05 0.00 -45 -5 25 55 85 115 125 Temperature (oC) 1.240 1.235 1.230 1.225 -45 55 85 115 125 70 -0.1 60 Off-State Current (nA) Delta Vref/Delta VK (mV/V) 25 Off-State Current vs. Temperature 0 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -5 25 55 Temperature (oC) Rev.E.04 -5 Temperature (oC) Delta Reference Voltage vs. Temperature -0.9 -45 VKA= VREF IKA=10mA 1.245 85 115 125 50 40 30 20 10 0 -45 -5 25 55 85 115 125 Temperature (oC) 13 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Date Code Rule Marking Date Code Year A A A W W xxx0 A A A W W xxx1 A A A W W xxx2 A A A W W xxx3 A A A W W xxx4 A A A W W xxx5 A A A W W xxx6 A A A W W xxx7 A A A W W xxx8 A A A W W xxx9 n Tape and Reel Dimension SOT-25 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size 14 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-25 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Tape and Reel Dimension TSOT-25 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TSOT-25 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm SOT-89 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Rev.E.04 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-89 12.0±0.1 mm 4.0±0.1 mm 1000pcs 180±1 mm 15 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Tape and Reel Dimension SOT-23 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-23 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm TSOT-23 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size 16 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TSOT-23 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Tape and Reel Dimension SOP-8 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 SOP-8 12.0±0.1 mm 4.0±0.1 mm 2500pcs 330±1 mm TO-92-3 AME AME PIN 1 W P Carrier Tape, Number of Components Per Reel and Reel Size Package TO-92-3 Rev.E.04 Carrier Width (W) +1.0 mm -0.5 18.0 Pitch (P) Part Per Full Reel Reel Size 12.7±0.2 mm 2000pcs N/A 17 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Package Dimension TO-92-3 (bulk pack) SYMBOLS Top View A L e e1 w PIN 1 D Side View A R INCHES MIN MAX MIN MAX 2.80 4.95 0.1102 0.1949 b 0.40REF 0.0157REF E 3.94REF 0.1551REF e 2.54REF 0.1000REF e1 1.27REF 0.0500REF L E-PIN C 1/16 MILLIMETERS 12.70 15.49 2.29 R 0.5000 0.6098 0.0902 W 0.35 0.76 0.0138 0.0299 D 3.80 4.95 0.1496 0.1949 b 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. E TO-92-3 (tape pack) SYMBOLS Top View L e e1 w A b PIN 1 E D E-PIN C 1/16 Side View MILLIMETERS MIN MAX MIN MAX 2.80 4.95 0.1102 0.1949 0.40REF 2.40 R b 3.94 0.0157REF 0.0945 0.1551 e 5.08REF 0.2REF e1 2.54REF 0.1REF L 12.70 15.49 2.00 R A INCHES 0.5000 0.6098 0.0787 W 0.35 0.76 0.0138 0.0299 D 3.80 4.95 0.1496 0.1949 E 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. 18 Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Package Dimension SOT-23 Top View Side View D θ1 E H SYMBOLS L PIN 1 e MILLIMETERS MIN MAX MIN MAX A 1.00 1.40 0.0394 0.0551 A1 0.00 0.15 0.0000 0.0059 b 0.35 0.50 0.0138 0.0197 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 e H Front View 1.90 BSC 2.40 A θ1 0.0748 BSC 3.00 0.35BSC L o 0.0138BSC o 0 0.09449 0.11811 10 o 0 o 10 A1 b INCHES TSOT-23 Top View Side View D θ1 E H SYMBOLS L PIN 1 MAX MIN MAX A+A1 0.80 1.30 0.0315 0.0512 b 0.35 0.50 0.0138 0.0197 D 2.70 3.10 0.1063 0.1220 E 1.20 1.80 0.0472 0.0709 H L Front View INCHES MIN e e MILLIMETERS 2.40 3.00 0.35BSC 0o 10o 0.0748 BSC 0.09449 0.11811 0.0138BSC 0o 10o b Rev.E.04 A1 A 81 1.90 BSC 19 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Package Dimension SOT-89 Top View D D1 Side View H SYMBOLS A E A1 A1 e Bottom View D2 INCHES MIN MAX MIN MAX 1.39 1.60 0.05472 0.06299 0.8 REF 0.03150 REF C 0.35 0.44 0.01378 0.01732 10' D 4.39 4.60 0.17283 0.18110 C D1 1.35 1.83 0.05315 0.07205 E 2.28 2.60 0.08976 0.10236 I 0.36 0.56 0.01417 0.02204 3' PIN 1 MILLIMETERS Front View A MATTE FINISH E2 I POLISH S1 e 3.00 REF 0.11811 REF H 0.70 REF 0.02756 REF S1 1.50 REF 0.05906 REF E2 2.05 2.60 0.08071 0.10236 D2 1.50 1.85 0.05905 0.07283 SOP-8 Side View Top View C SYMBOLS E H PIN 1 θ D Front View MAX MIN MAX A 1.35 1.75 0.05315 0.0689 A1 0.10 0.30 0.00394 0.01181 A A2 A1 e 1.473 REF 0.05799 REF B 0.33 0.51 0.01299 0.02008 C 0.19 0.25 0.00748 0.00984 D 4.80 5.33 0.18898 0.20984 E 3.80 4.00 0.14961 0.15748 1.27 BSC e 7o(4 X) INCHES MIN A2 L MILLIMETERS 0.05000 BSC L 0.40 1.27 0.01575 0.05000 H 5.80 6.30 0.22835 0.24803 y - 0.10 θ 0 o 8 o 0 o 0.00394 8 o B 20 Rev.E.04 AME Adjustable Precision Shunt Regulator AME431B-1.24V n Package Dimension SOT-25 Top View Side View D θ1 SYMBOLS MILLIMETERS MIN 1.20REF E H A PIN 1 0.0472REF L 0.15 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 1.90 BSC 2.60 θ1 3.00 0 o 10 0.10236 0.11811 0.0146BSC o 0o 10o 0.95BSC 0.0374BSC MILLIMETERS INCHES A1 A S1 0.07480 BSC 0.37BSC L Front View MAX 0.00 H e MIN A1 e S1 MAX INCHES b TSOT-25 Top View Side View D θ1 E H SYMBOLS PIN 1 L MIN MAX MIN MAX A+A1 0.90 1.25 0.0354 0.0492 b 0.30 0.50 0.0118 0.0197 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 e S1 e H L Front View b Rev.E.04 S1 2.40 3.00 0.35BSC 0o 10o 0.95BSC 0.07480 BSC 0.09449 0.11811 0.0138BSC 0o 10o 0.0374BSC A1 A θ1 1.90 BSC 21 www.ame.com.tw E-Mail: [email protected] 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. , November 2008 Document: BCD-DS431B-E.04 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