CP432V

CP432 Adjustable Precision Shunt Regulator Features - Precision reference voltage CP432 : 1.24V ± 1% CP432A : 1.24V ± 0.5% - Sink current capability: 200mA. - Minimum cathode current for regulation: 150µA - Equivalent full-range temp coefficient: 30 ppm/oC - Fast turn-on Response. - Low dynamic output impedance: 0.2Ω - Programmable output voltage to 20v - Low output noise - Packages: SOT89, SOT23, TO92 General Description The CP432/432A are 3-terminal adjustable precision shunt regulators with guaranteed stable temperature over the applicable extended commercial temperature range. The output voltage may be set at any level greater than 1.24\/ (VREF) up to 20V merely by selecting two external resistors that act as a voltage divider network. These devices have a typical output impedance of 0.2Ω. Active output circuitry provides very sharp turn-on characteristics, making these devices excellent improved replacements for Zener diodes in many applications. The precise +/- 1% reference voltage tolerance of the CP432/432A make it possible in many applications to avoid the use of a variable resistor, consequently saving cost and eliminating drift and reliability problems associated with it. Typical Application Circuit VIN VOUT + Cin CP432 R1 + Cout R2 VOUT = (1+R1/R2)VREF Precision Regulator * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 1 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 CP432 Adjustable Precision Shunt Regulator Block Diagram REF (R) + Cathode (C) VREF Symbol Cathode (C) 1.24V REF (R) Anode (A) Anode (A) Pin Configuration Order Number Pin Configuration (Top View) Order Number Pin Configuration (Top View) CP432Y CP432AY (SOT89) 3 Cathode 2 Anode 1 REF CP432R CP432AR (SOT23) 3 REF Anode 1 2 Cathode * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 2 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 + + CP432V CP432AV (TO92) 3 Cathode 2 Anode 1 REF + CP432W CP432AW (SOT23) 3 Cathode Anode 1 2 REF CP432 Adjustable Precision Shunt Regulator Absolute Maximum Ratings Cathode voltage ……………………………....……...........…..........……………………………………...……….20V Continuous cathode current …………………………………......................…………………….... -10mA ~ 250mA Reference input current range ………………………...….………....................……………………….…....... 10mA Operating temperature range (CP432) ………………………………………………………………… -20oC ~ 85oC o (CP432I).……………..…..…............……………………………..……. -40 C~85oC Lead Temperature……………….…………….…..……………………..………………..…….........…............ 260oC Storage Temperature ……………………………..............…......………………….......……............ -65oC ~ 150oC Power Dissipation (Notes 1. 2) SOT89 .……………..……..……………………............….... 0. 80W TO92 .....…………….………………………....……….. ..... 0.78W SOT23. …………………..…..…………………………….…. 0.23W Note 1: TJ, max =150oC. . Note 2: Ratings apply to ambient temperature at 25oC. Electrical Characteristics (Ta=25oC, unless otherwise specified.) Test conditions VKA = Vref, CP432 Reference voltage I KA = 10mA CP432A (Fig.1) Deviation of reference input voltage VKA = VREF , IKA = 10mA , over temperature (Note 3) Ta = full range (Fig.1) Ratio of the change in reference IKA = 10mA voltage to the change in cathode VKA = 20 ~VREF (Fig.2) voltage R1 = 10KΩ,R2 = ∞ Reference input current IKA= 10mA (Fig.2) R1 = 10KΩ,R2 = ∞ Deviation of reference input current IKA = 10mA over temperature Ta = Full range (Fig.2) Minimum cathode current for VKA = VREF (Fig.1) regulation Off-state current VKA = 20V , VREF = 0V (Fig.3) V KA = VREF Dynamic output impedance (Note 4) ∆IKA = 0.1mA ~ 15mA Frequency ≤ 1KHz (Fig.1) Parameter Symbol VREF VREF ∆VREF ∆V KA Min. 1.227 1.233 Typ. 1.24 3.0 -1.4 1.4 0.4 0.15 0.1 0.2 Max. 1.252 1.246 20 -2.0 3.5 1.2 0.3 1.0 0.5 Unit V mV mV/V µA µA mA µA Ω IREF αIREF IKA(min) IKA(off) Z KA * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 3 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 CP432 Adjustable Precision Shunt Regulator VMAX VDEV = VMAX - VMIN VMIN TI TEMPERATURE T2 Note 3. Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference over the full temperature range. The average temperature coefficient of the reference input voltage αVREF is defined as: ( VDEV VREF (25°C) ) × 10 6 αVREF = T2 − T1 ……………………..……………….. ( ppm °C ) Where: T2 – T1 = full temperature change. αVREF can be positive or negative depending on whether the slope is positive or negative. Note 4. The dynamic output impedance, RZ, is defined as: ∆ V KA Z KA = ∆ I KA When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output impedance of the overall circuit, is defined as: ' ∆v ZKA = ≈ ZKA ∆i (1 + R1 ) R2 Test Circuits Input IN IN VKA IKA R1 VREF IREF VREF IKA VKA VKA R2 IZ(OFF) V KA = V REF (1 + Fig1. Test Circuit for V KA= VREF R1 ) + IREF ⋅ R1 R2 Fig3. Test Circuit for off-state Current Fig2. Test circuit for V KA＞VREF * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 4 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 CP432 Adjustable Precision Shunt Regulator Typical Performance Characteristics SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY 60 AV -Small Signal Voltage Amplification (dB) 50 40 30 20 10 0 1K 10K IKA=10mA TA=25oC 15KΩ 9μF Output IKA 232Ω + 8.25KΩ - TEST CIRCUIT FOR VOLTAGE AMPLIFICATION f-Frequency-Hz 100K 1M 10M REFERENCE IMPEDANCE vs. FREQUENCY 100 ∣ZKA∣—Reference Impedance —Ω IKA=10mA TA=25oC 10 50Ω + 1 TEST CIRCUIT FOR REFERENCE IMPEDANCE 0.1 1K 10K 100K 1M 10M f-Frequency-Hz STABILITY BOUNDARY CONDITIONS † 100 90 80 IKA-Cathode Current-m A 70 60 50 40 30 20 10 0 0.001 0.01 0.1 1 C L-Load Capacitance-µ F 10 CL R2 A VKA=Vref B VKA=5V C VKA=10V D VKA=15V B TA=25 oC Stable CL Stable A C TEST CIRCUIT FOR CURVE A D R1=10KO The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ were adjusted to establish the initial V KA and I KA conditions with CL =0.V BATT a nd CL were then adjusted to determine the ranges of stability. TEST CIRCUIT FOR CURVE B, C, AND D * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 5 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 1KΩ 150O I KA + I KA + GND Output I KA GND VBATT 150O + - VBATT CP432 Adjustable Precision Shunt Regulator Application Examples VIN RCL R R1A R1B VIN IOUT V IN ON R2A R2B OFF + LED on when Low Limit＜VIN＜High Limit Low Limit ≈ VREF (1+R1B/R2B) High Limit ≈ VREF (1+R1A/R2A) V IN Delay = RC x ln( ) VIN -VREF IOUT = VREF / RCL Fig.4 Voltage Monitor Fig.5 Delay Timer Fig.6 Current Limiter or Current Source VIN IOUT VIN VOUT VIN PUSE R1 VOUT R1 RS R2 R2 IOUT = VREF / RS VOUT = (1 + R1/R2) × VREF LIMIT (1 + R1/R2) × VREF Fig.7 Constant-Current Sink Fig.8 Higher-Current Shunt Regulator Fig.9 Crow Bar VIN R1A R1B Output ON when Low Limint ＜VIN＜High Limit + R2A R2B VBE Low Limit High Limit V REF(1 + R1B/R2B) +VBE VREF(1 + R1A/R2A) Fig.10 Over-Voltage / Under-Voltage Protection Circuit * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 6 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 CP432 Adjustable Precision Shunt Regulator Package Diagrams (1) SOT89-3L Package Outline Dimension D1 E e1 e 50(2x) 8 (2x) D c A b b1 b 0 Symbol A b b1 C D D1 e e1 E HE L Dimensions In Millimeters Min. 1.40 0.36 0.41 0.35 4.40 1.40 2.90 1.45 2.40 3.94 0.80 Nom. 1.50 0.42 0.47 0.39 4.50 1.60 3.00 1.50 2.50 Max. 1.60 0.48 0.53 0.43 4.60 1.75 3.10 1.55 2.60 4.25 1.20 L HE Dimensions In Inches Min. 0.055 0.014 0.016 0.014 0.173 0.055 0.114 0.057 0.094 0.155 0.031 Nom. 0.059 0.016 0.043 0.015 0.177 0.062 0.118 0.059 0.098 Max. 0.063 0.018 0.051 0.017 0.181 0.069 0.122 0.061 0.102 0.167 0.047 * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 7 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 CP432 Adjustable Precision Shunt Regulator (2) TO92-3L Package Outline Dimension A1 A b1 D b e b E L Symbol A A1 b b1 D E L e Dimensions In Millimeters Min. Nom. Max. 3.302 3.556 3.810 1.016 0.330 0.381 0.432 0.406 0.457 0.506 4.445 4.572 4.699 4.445 4.572 4.699 13.00 15.500 1.150 1.270 1.390 Dimensions In Inches Min. Nom. Max. 0.130 0.140 0.150 0.040 0.013 0.015 0.017 0.016 0.018 0.020 0.175 0.180 0.185 0.175 0.180 0.185 0.512 0.610 0.045 0.050 0.055 * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 8 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 CP432 Adjustable Precision Shunt Regulator (4) SOT23-3L Package Outline Dimension 2 1 3 e D A2 A b Symbol A A1 A2 b C D E e HE L Dimensions In Millimeters Min. 1.00 0.00 1.00 0.35 0.10 2.70 1.40 1.70 2.40 0.35 Nom. 1.20 1.15 0.175 2.90 1.60 2.00 2.70 0.45 Max. 1.40 0.10 1.30 0.50 0.25 3.10 1.80 2.30 3.00 0.55 A1 C L Dimensions In Inches Min. 0.039 0.000 0.039 0.014 0.004 0.106 0.055 0.067 0.094 0.014 Nom. 0.047 0.045 0.007 0.114 0.063 0.079 0.106 0.018 Max. 0.055 0.004 0.051 0.020 0.010 0.122 0.071 0.091 0.118 0.022 * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 9 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052 HE E CP432 Adjustable Precision Shunt Regulator ■ Taping Specifications For TO-92 package SYMBOL P P0 P1 H H1 H2 H3 H4 F W W1 W2 ΦD0 E SPECIFICATIONS (mm) 12.7 ± 1.0 12.7 ± 1.0 3.81 ± 0.4 21.0~26.0 17.0~21.0 14.0~18.0 3.4 max. 2.5 min. 5.08 ± 0.2 18.0 ± 0.5 9.0 ± 0.5 6.0 ± 0.5 4.0 ± 0.2 0.5 max. SPECIFICATIONS (inch) 0.50 ± 0.07 0.50 ± 0.07 0.15 ± 0.016 0.828~1.024 0.669~0.828 0.551~0.709 0.125 max. 0.098 min. 0.2 ± 0.008 0.708 ± 0.020 0.354 ±0.020 0.236 ±0.020 0.157 ± 0.008 0.020 max. * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 10 of 10 Rev 1.1 Jan. 19,2005 Fax:886-3-3521052