CM431LACM2R3

CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR GENERAL DESCRIPTION The CM431L is a low voltage three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. The output voltage can be adjusted to any value from 1.24V （VREF）to 20V with two external resistors. The CM431L has a typical dynamic output impedance of 0.25Ω. Active output circuitry provides a very sharp turn on characteristic, making the CM431L an excellent replacement for zener diodes. The CM431L shunt regulator is available in four voltage tolerances（0.5%, 0.7%, 1.0% and 2.0%）and four package options (SOT-23-3, SOT-23-5, SOT-89, TO-92, and SOP-8). Four voltage tolerances allow the designer the opportunity to select the proper cost/tolerance for their application. FEATURES LOW voltage operation（1.24V） Adjustable output voltage V0 = VREF to 20V Wide operating current range 60μA to 100mA LOW dynamic output impedance 0.25Ω typ. Trimmed bandgap design ± 0.5% APPLICATIONS Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drivers PIN CONFIGURATION TO-92 Front View CATHODE SOT-23-3 Top View 3 REF ANODE Pin 1 Pin 2 Pin 3 CM431LXCM233 REF CATHODE ANODE CM431LXCM2R3 CATHODE REF ANODE Suffix “X”: Grade “A”, “B”, “C”, or “D” 1 1 2 3 2 SOT-23-5 Top View 5 4 SOT-89 Top View 1 SOP-8 Top View C OE ATH D N C N C N C R EF N C AN D OE N C 8 7 6 5 CATHODE REF CATHODE ANODE REF ANODE 2 3 4 NC NC 1 2 3 1 2 3 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 1 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR BLOCK DIAGRAM BLOCK DIAGRAM SYMBOL DIAGRAM C athode Ref Anode 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 2 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR ORDERING INFORMATION PACKAGE 0.5% SOT-23-3（1） SOT-23-3（1） SOT-23-5（1） SOT-89（1） TO-92（2） SOP-8 SOT-23-3（1） CM431LACM233 CM431LACM2R3 CM431LACM235 CM431LACM89 CM431LACN CM431LACS 0.7% CM431LDCM233 CM431LDCM2R3 CM431LDCM235 CM431LDCM89 CM431LDCN CM431LDCS TOLERANCE 1.0% CM431LBCM233 CM431LBCM2R3 CM431LBCM235 CM431LBCM89 CM431LBCN CM431LBCS CM431LGBCM233* CM431LGBCM2R3* CM431LGBCM235* CM431LGBCM89* CM431LGBCN* CM431LGBCS* 2.0% CM431LCCM233 CM431LCCM2R3 CM431LCCM235 CM431LCCM89 CM431LCCN CM431LCCS CM431LGCCM233* CM431LGCCM2R3* CM431LGCCM235* CM431LGCCM89* CM431LGCCN* CM431LGCCS* TR=3K TR=3K TR=3K TR=1K TA=2K T/R Quantity TR=3K TR=3K TR=3K TR=1K TA=2K CM431LGACM233* CM431LGDCM233* SOT-23-3（1） CM431LGACM2R3* CM431LGDCM2R3* SOT-23-5（1） SOT-89（1） TO-92（2） SOP-8 Notes： （1） Add suffix ″TR″for Tape & Reel. （2） Add suffix ″TA″for Tape Ammo. （3） CM431LGACM235* CM431LGDCM235* CM431LGACM89* CM431LGACN* CM431LGACS* CM431LGDCM89* CM431LGDCN* CM431LGDCS* *Note: Add suffix “G” for Pb Free Product 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 3 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR ABSOULTE MAXIMUM RATINGS Parameter Cathode Voltage Continuous Cathode Current Reference Current Operating Junction Temperature Range Storage Temperature Range Thermal Resistance TO-92 SOT-23-3 SOT-23-5 SOT-89 SOP-8 Power Dissipation at TA =25℃ TO-92 SOT-23-3 SOT-23-5 SOT-89 SOP-8 Lead Temperature（Soldering）10 seconds TLEAD PD 0.78 0.30 0.30 1.00 0.71 250 ℃ W Symbol VZ IZ IREF TJ TSTG θJA 160 410 256 110 175 Maximum 20 100 3 -40 to +150 -65 to + 150 Units V mA mA ℃ ℃ ℃/W RECOMMENDED OPERATING CONDITION Min Cathode Voltage. Vz Cathode Current. Iz Operating Temperature VREF 80 0 Max 16 100 105 Symbol V mA ℃ 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 4 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR ELECTRICAL CHARACTERISTICS Parameter Reference Voltage VREF Temp Deviation Ratio of Change in VREF to Change in Cathode Voltage Reference Input Current IREF Temp Deviation Off State Cathode Current Dynamic Output Impedance Minimum Operating Current Unless specified, TA = 25℃ CM431L 0.5% CM431L 0.7% Symbol Condition MIN TYP MAX MIN TYP MAX UNITS VREF Vz=VREF , TA=25℃ 1.234 1.240 1.246 1.231 1.240 1.249 Iz=10mA V 1.258 1.222 1.258 TA=-40 to+85℃ 1.222 VDEV TA=-40 to +85℃, Vz= VREF Iz=10mA 10 25 10 25 mV ΔVREF Iz=10mA, ΔVZ=16V to VREF -1.0 ΔVz IREF R1=10kΩ, R2=∞, Iz=10mA 0.15 IREF（DEV） TA=-40 to +85℃ R1=10 kΩ R2= ∞, Iz=10mA Iz（off） rz VREF=0V VZ=6V VZ=16V f < 1KHz, VZ= VREF Iz=100μA to 100 mA 0.5 0.15 0.5 -2.7 -1.0 -2.7 mV/V μA 0.1 0.5 0.5 0.25 60 0.4 2.0 2.0 0.4 80 0.1 0.5 0.5 0.25 60 0.4 2.0 2.0 0.4 80 μA μA Ω μA IZ（min） VZ= VREF 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 5 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR ELECTRICAL CHARACTERISTICS (CONTINUED) Parameter Reference Voltage VREF Temp Deviation Ratio of Change in VREF to Change in Cathode Voltage Reference Input Current IREF Temp Deviation Off State Cathode Current Dynamic Output Impedance Minimum Operating Current Unless specified, TA = 25℃ CM431L 1% CM431L 2% Symbol Condition MIN TYP MAX MIN TYP MAX VREF Vz=VREF , TA=25℃ 1.228 1.240 1.252 1.215 1.240 1.265 Iz=10mA 1.265 1.200 1.280 TA=-40 to+85℃ 1.215 VDEV TA=-40 to +85℃, Vz= VREF Iz=10mA 10 25 10 35 UNITS V mV ΔVREF Iz=10mA, ΔVZ=16V to VREF -1.0 ΔVz IREF R1=10kΩ, R2=∞, Iz=10mA 0.15 IREF（DEV） TA=-40 to +85℃ R1=10 kΩ R2= ∞, Iz=10mA Iz（off） rz VREF=0V VZ=6V VZ=16V f < 1KHz, VZ= VREF Iz=100μA to 100 mA 0.5 0.15 0.5 -2.7 -1.0 -2.7 mV/V μA 0.1 0.5 0.5 0.25 60 0.4 2.0 2.0 0.4 80 0.1 0.5 0.5 0.25 60 0.4 2.0 2.0 0.4 60 μA μA Ω μA IZ（min） VZ= VREF 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 6 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR TYPICAL CHARACTERISTICS Cathode Current vs. Cathode Voltage 300 200 100 0 -100 -200 -300 -1 -0.5 0 Vz(V) 0.5 1 1.5 Iz(mA) Iz(uA) 150 100 50 0 -50 -100 -150 -1.5 Vz=VREF TA=25℃ -1 -0.5 0 Vz(V) 0.5 1 1.5 Cathode Current vs. Cathode Voltage Reference Voltage vs. Junction Temperature 1.248 1.246 1.244 VREF(V) Iz=10mA Reference Input Current vs. Junction Tem perature 150 125 IREF(nA) 100 75 50 -50 1.242 1.24 1.238 1.236 1.234 -50 -25 0 25 50 TJ(℃) 75 100 125 150 Iz=80uA -25 0 25 50 TJ ( ℃ ) 75 Iz=10mA R1=10kΩ R2=∞ 100 125 150 Ratio of Delta Ref. Voltage to Delta Cathode Voltage vs. Junction Tem perature 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 250 200 Iz(off) (nA) 150 100 50 0 Off State Cathode Current vs. Junction Temperature VREF = 0V △ V REF/△ V z (-mV/V) Iz=10mA △ Vz=16V to V REF -25 0 25 50 TJ ( ℃ ) 75 100 125 150 -50 -25 0 25 50 TJ(℃) 75 100 125 150 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 7 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR TYPICAL CHARACTERISTICS (Conti) Stability Boundary Condition 3.5 3 2.5 2 1.5 1 0.5 0 50 PF 0. 00 2u F 0. 00 5u F 0. 00 8u F 0. 02 uF 0. 05 uF 0. 08 uF 0. 2u F 0. 5u F 0. 8u F Iz (mA) CL 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 8 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR APPLICATION CIRCUIT Notes for Application Circuit： 1) Set VOUT according to the following equation： VOUT =VREF ( 1 + R1/R2 ) +IREF R1 2) Choose the value for R as follows： • The maximum limit for R should be such that the cathode current, Iz, is greater than the minimum operating current（80μA）at VIN（min）. • The minimum limit for R should be such that Iz does not exceed 100mA under all load conditions, and the instantaneous turn-on value for Iz does not exceed 150mA. Both of the following conditions must be met： Rmin ≥ VIN（max） 150mA （to limit instantaneous turn-on Iz） Rmin ≥ VIN（max）–VOUT （to limit Iz under normal operating conditions） IOUT（min）+ 100mA 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 9 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR PACKAGE DIMENSION TO-92 θ A A1 b D D1 A E L e θ θ1 E L A1 b D e ` 3-Pin Plastic TO-92 Carrier Dimensions 2006/02/10 Rev. 5 Champion Microelectronic Corporation θ1 D1 Page 10 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR PACKAGE DIMENSION (CONTINUED) SOT-23-3 D 3 b1 c1 With Plating A c A1 A2 E1 b Base Metal Section B-B E b b1 c c1 D E 1 e e1 2 E1 b L L1 e e1 θ1 θ θ1 θ2 A2 A θ2 A1 See Section B-B SOT-23-5 D 5 4 b1 c1 With Plating A θ L L1 c A1 A2 E1 b Base Metal Section B-B E b b1 c c1 D E 1 e 2 3 E1 e1 b L L1 e e1 θ1 θ θ1 θ2 A2 A θ2 A1 See Section B-B 2006/02/10 Rev. 5 Champion Microelectronic Corporation θ L L1 Page 11 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR PACKAGE DIMENSION (CONTINUED) SOT-89 D D1 φ1.0 E H L 5° C e e1 8° A L b b1 C D D1 H E e1 b b1 b e 8-PIN SOP (S08) PIN 1 ID θ θ 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 12 CM431L LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR 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 integrated 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. customer should provide adequate design and operating safeguards. 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 HsinChu Headquarter 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan T E L : +886-3-567 9979 F A X : +886-3-567 9909 Sales & Marketing 11F, No. 306-3, SEC. 1, Ta Tung Road, Hsichih, Taipei Hsien 221, Taiwan T E L : +886-2-8692 1591 F A X : +886-2-8692 1596 2006/02/10 Rev. 5 Champion Microelectronic Corporation Page 13