CM431A CHAMP | Alldatasheet

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LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 1 GENERAL DESCRIPTION FEATURES ‹ Initial voltage reference accuracy of 1.0%. ‹ Sink current capability from 1mA to 100mA ‹ Typical output dynamic impedance less than 200mΩ ; ‹ Adjustable output voltage from V REF to 18V ‹ Available in SOT-23, SOT-89, TO-92, & SOP-8 ‹ Low output noise ‹ Typical equivalent full range temperature coefficient of 30ppm/ O C

APPLICATIONS

The CM431A is a three-terminal adjustable shunt voltage regulator with specified thermal stability and pin-to-pin compatible with the earlier 431 series. The output voltage can be adjusted to any value between V REF and 18V by using two external resistors. The CM431A offers low output impedance for improved load regulation with a typical output impedance of 200mΩ. Because of the active output circuitry, the CM431A can replace the zener diodes in applications such as switching power supplies, OVP crowbar circuits, references for A/D, D/A converters with improved turn-on characteristics. ‹ Voltage Reference ‹ Precision shunt regulator ‹ High current shunt regulator ‹ PWM down converter with reference ‹ Voltage monitor PIN CONFIGURATION TO-92 Front View 1 23 REF ANODE CATHODE SOT-23-3 Top View CM431AXCM233 CM431AXCM2R3 Pin 1 REF CATHODE Pin 2 CATHODE REF Pin 3 ANODE ANODE SOT-23-5 Top View NC ANODE CATHODE 4REF NC SOT-89 SOP-8 Top View Top View CATHODE NC NC NC REF NC ANODE NC 1 23 REF ANODE CATHODE

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 2 TYPICAL APPLICATION BLOCK DIAGRAM 5V Precision Regulator CATHODE ANODE REF VREF 27.5K 0.1% 27.5K 0.1% Rb VO = 5V Note: Rb should provide cathode current ≥ 1mA

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 3

ORDERING INFORMATION

0.5% 1.0% 1.5% T/R Quantity SOT-23-3 （1） CM431AACM233 CM431ABCM233 CM431AECM233 TR=3K SOT-23-3 （1） CM431AACM2R3 CM431ABCM2R3 CM431AECM2R3 TR=3K SOT-23-5 （1） CM431AACM235 CM431ABCM235 CM431AECM235 TR=3K SOT-89 （1） CM431AACM89 CM431ABCM89 CM431AECM89 TR=1K TO-92 （2） CM431AACN CM431ABCN CM431AECN TA=2K SOP-8 CM431AACS CM431ABCS CM431AECS SOT-23-3 （1） CM431AGACM233* CM431AGBCM233* CM431AGECM233* TR=3K SOT-23-3 （1） CM431AGACM2R3* CM431AGBCM2R3* CM431AGECM2R3* TR=3K SOT-23-5 （1） CM431AGACM235* CM431AGBCM235* CM431AGECM235* TR=3K SOT-89 （1） CM431AGACM89* CM431AGBCM89* CM431AGECM89* TR=1K TO-92 （2） CM431AGACN* CM431AGBCN* CM431AGECN* TA=2K SOP-8 CM431AGACS* CM431AGBCS* CM431AGECS* N o t e s： （1） Add suffix ″TR″for Tape & Reel. （2） Add suffix ″TA″for Tape Ammo. （3） *Note: Add suffix “G” for Pb Free Product

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 4 ABSOLUTE MAXIMUM RATINGS Cathode to Anode Voltage (VKA) (Note 2) -0.3V to 18V Continuous Cathode Current (IK) -100mA to 150mA Reference Input Current (IREF) -50uA to 10mA Maximum junction temperature range, TJ 150 O C Storage temperature range -65 O C to 150 O C Lead temperature (soldiering, 10 seconds) 260 O C Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. Note 2: Voltage values are with respect to the anode terminal unless otherwise noted. POWER DISSIPATION TABLE Package θJA O C/W ) Derating factor ( mW/ O C ) TA≧25 O C TA≦25 O C Power rating(mW) TA=70 O C Power rating(mW) TA= 85 O C Power rating (mW) TA= 105 O C Power rating (mW) SOP-8 165 6.06 757 485 394 272 TO-92 156 6.41 801 513 417 288 SOT-89 71(note) 14.1 1763 1128 916 635 SOT-23 285 3.5 438 280 228 158 Note : 1. For SOT-89 package, Thermal Resistance-Junction to Tab ( θJT ) = 35 O C/W. TJ = TTAB + (PD x θJT) 2. θJA: Thermal Resistance-Junction to Ambient Junction Temperature Calculation: T J = TA + (PD x θJA). The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow. RECOMMENDED OPERATING CONDITIONS Min Max Units Operating free air temperature range, TA 0 105 O C Cathode current, IK 1 100 mA Cathode voltage, VKA 0 16 V

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 5

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, these specifications apply over the operating ambient temperatures with TA = 25°C. CM431A Parameter Symbol Test Conditions Min Typ Max Units IK = 10mA, VKA = V ,0.5% 2.488 2.5 2.512 V REF IK = 10mA, VKA = VREF ,1.0% 2.475 2.5 2.525 V Reference Input Voltage VREF IK = 10mA, VKA = VREF ,1.5% 2.463 2.5 2.537 V Reference Drift IK = 10mA, VKA = VREF, 0 O C ≤ TA ≤ 70 O C 4 17 mV Voltage Ratio, Ref to Cathode I(note 4) K = 10mA, VKA = 2.5V to 18V -1.4 -2.7 mV/V IK = 10mA,VKA = V 2 4 REF Reference Input Current IREF IK = 10mA,VKA = VREF, 0 O C ≤ TA ≤ 70 O C 2.3 μA Minimum Operating Current I VMIN KA = V 0.4 1 mA REF Off-State Cathode Current I VOFF KA = 18V, V = 0V 0.1 1 μA REF VDynamic Impedance |ZKA | KA = V , I = 1mA to 100mA, KREF 0.2 0.5 Ω f ≤ 1kHz Note 3: These parameters are guaranteed by design VREF Note 4: VKA Ratio of change in reference input voltage to the change in cathode voltage

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 7 TYPICAL CHARACTERISTICS Cathode Current vs. Cathode Voltage Cathode Current vs. Cathode Voltage Ref. Input Voltage vs. Free-Air Temperature Ref. Input Current vs. Free-Air Temperature Stability Boundray Conditions 100 0.001 0.01 0.1 1 10 CL-Load Capacitance(uF) IKA-Cathode Current (mA) C Stable B A Stable D

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 10 PACKAGE DIMENSION TO-92 L e θ A b D E A θ E D L e b SOT-23-3 L D E A b c θ e D E e b A b c Base Metal With Plating Section B-B See Section B-B L1 L θ

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 11 PACKAGE DIMENSION (CONTINUED) SOT-23-5 L D E A b c θ e D E e b A b c Base Metal With Plating Section B-B See Section B-B L1 L θ 123 5 4 SOT-89 e H E A b L C D D e EL H b b1 b C φ1.0

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 12 PACKAGE DIMENSION (CONTINUED) 8-PIN SOP (S08) PIN 1 ID θ θ

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 13 NUMBERING SCHEME note1: X : Suffix for Reference Voltage Tolerance (note 3) Y : Suffix for Temperature Range (note 4) Z : Suffix for Package Type (note 5) note2: G : Suffix for Pb Free Product X : Suffix for Reference Voltage Tolerance (note 3) Y : Suffix for Temperature Range (note 4) Z : Suffix for Package Type (note 5) note 3: see the Reference Voltage Tolerance Suffix Table note 4: Y= C: 0℃~+105℃ note 5: Z is single alphabet with or without digits M233 : SOT-23-3 (TR only) M2R3: SOT-23-3 (TR only) but pin assignment is different with M233 M235 : SOT-23-5 (TR only) M89:SOT-89(TR only) N:TO-92(TA only) S:SOP-8(TR only) Reference Voltage Tolerance Suffix Table Tolerance Suffix 0.5% A 1% B 1.5% E

LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 2006/10/11 Rev1.2 Champion Microelectronic Corporation Page 14 IMPORTANT NOTICE Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC int egrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. HsinChu Headquarter Sales & Marketing 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan 7F-6, No.32, Sec. 1, Chenggong Rd., Nangang District, Taipei City 115, Taiwan, R.O.C. T E L : +886-3-5679979 T E L : +886-2-2788 0558 FAX: +88 6-3-5679909 F A X : +886-2-2788 2985