TOSHIBA TA76431AS TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA76431AS ADJUSTABLE PRECISION SHUNT REGULATOR FEATURES Precision Reference Voltage Small Temperature Coefficient Adjustable Output Voltage > VREF = 2.495V + 1% : |aVReFl = 46 ppm/C > VREF = VouT = 36V Low Dynamic Output Impedance : FUNCTIONAL BLOCK DIAGRAM REFERENCE (REF) ANODE (A) CATHODE {K) 0.15 Q (Typ.) IZKal CIRCUIT SYMBOL CATHODE {K) REFERENCE (REF) ANODE (A) THIS IC CONTAINS ELECTROSTATIC SENSITIVE ELEMENT. PLEASE HANDLE WITH CAUTION. EQUIVALENT CIRCUIT CATHODE SSIP3-P-1.27 Weight : 0.36 g (Typ.) REFERENCE FQ10 4 Rg Ry Wr ANODE 9809 10EBA1 and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. property or other rights of TOSHIBA CORPORATION or others. @ The information contained herein is subject to change without notice. @ TOSHIBA is continually working to improve the quality and the reliability of its products. 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No license is granted by implication or otherwise under any intellectual 1998-12-24 1/7TOSHIBA MAXIMUM RATINGS (Ta = 25C) CHARACTERISTIC SYMBOL RATING UNIT Cathode Voltage VKA 37 Vv Cathode Current Ik - 100~150 mA Reference Voltage VREF 7 Vv Reference Current IREF 50 uA Reference-Anode Reverse | 10 mA Current REF Power Dissipation | Ta = 25C PD 800 mw Operating Temperature Topr -40~85 C Storage Temperature Tstg -55~150 C RECOMMENDED OPERATING CONDITIONS CHARACTERISTIC SYMBOL MIN. | TYP. | MAX. | UNIT Cathode Voltage VKA Veer] 36 Vv Cathode Current Ik 1 100 | mA Operating Temperature Topr - 40 85 C TA76431AS 1998-12-24 2/7TOSHIBA TA76431AS ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Ta = 25C, Ik = 10 mA) TEST CHARACTERISTIC SYMBOL | CIR- TEST CONDITION MIN.| TYP. IMAX.) UNIT CUIT Reference Voltage VREF |Vka = VREF 2.470/2.495)2.520) V Deviation of Reference Input VREF (dev)| __ |OC = Ta = 70C _ sl 17) mv Voltage Over Temperature (Note) VkA = VREF Ratio of Change in Reference | Veer < Vea = 10V _ 0.81 2.7 Input Voltage to the Change in | AVpEF/ AV mV/V Cathode Voltage |10V = Vea = 36V _ 0.5} 2.0 Reference Input Current IREF |Vka = VREF 1.4 4) uA oC = Ta = 70C Deviation of Reference Input IREF (dev) ' |VKA = VREF | 0.3} 1.2) nA Current Over Temperature (Note) Ry = 10k0, Rp = Minimum Cathode Current for Regulation IkKmin |VKA = VREF _ 0.4; 1.0) mA Off-State Cathode Current Koff |VKA = 36V, Veer = OV | 1.0) nA . VkA = Veer, f = 1 kHz Dynamic Impedance IZKal lama S Ik 5 100mA | 0.15) 0.5) O Note : The deviation parameters VReF (dev) and IREF (dev) are defined as the maximum variation of the Vref and IpEF over the rated temperature range. The average temperature coefficient of the Vref is (ppm /C) defined as; VREF (dev) ee x 108 VREF@25C leVREFl = 7Ta 1998-12-24 3/7TOSHIBA TEST PARAMETER (1) VKA = VREF MODE Rsp INPUT Oww9 9 vn | | (3) | OFF-STATE MODE Rsp INPUT Ow## 0 view | !Kotf | rca or TYPICAL APPLICATIONS (1) 2.5V REFERENCE VIN > > > < | VouT = 2.5V OQ TA76431AS (2) Vka > Vref MODE INPUT ow 47 Via, 1k {ee | i R4q R2 WAr Le 3 oe m qn Vika = VREF ( + Ro + IREFRY (2) SHUNT REGULATOR RsD Vin Ow Vout < a4 v Fou tS ns xs O GND Ry Vout = VREF (; Rp + IREFR4 1998-12-24 4/7TOSHIBA TA76431AS fF 50| VKA = VREF Ta = 25C -20 gt 100 x KE 2 1e] oc ead > o 9 us a xr 4 < -50 - 100 800 = 600 x ia Zz Ww ec x a 200 a xz z Go 0 - 200 -20 100 OFF STATE CATHODE CURRENT a 400| YKA = VREF -1.0 0 1.0 2.0 3.0 40 CATHODE VOLTAGE Vxa_ (V) IK - VKA VKA -1.0 0 1.0 2.0 3.0 40 CATHODE VOLTAGE Vxa_ (V) Ikoff - Ta VKA - 40 0 40 80 120 160 AMBIENT TEMPERATURE Ta (C) (mV) REFERENCE VOLTAGE Vrper (mv) CHANGE IN REFERENCE VOLTAGE AVREF (HA) IREF REFERENCE CURRENT 2600 2560 2520 - VREF Ta VKA=VREE INPUT Ik =10mMA Max. =2520mV 2480 Typ. = 2495mV 2440 2400 -20 - 30 - 40 Min. = 2470mV -40 0 40 80 120 160 AMBIENT TEMPERATURE Ta (C) AVREF - VKA INPUT Owr VREF 0 10 20 30 40 50 CATHODE VOLTAGE Vxa_ (V) -40 0 40 80 120 AMBIENT TEMPERATURE Ta (C) 1998-12-24 5/7TOSHIBA TA76431AS (Q DYNAMIC IMPEDANCE Zxa V) VOLTAGE SWING ZKA - F OT 5900 30) San, o e; | @g = Za 10| 7] = O Rs > Zka 1 e > 7 Gnp eo Re ZKA 3| Ta = 25C S VA = VREF 2p = 2-Rg ImA S -lk = 100mA ej / 1 A | 0.5 Sf- 7 03 yr 0.1 1k 10k 100k 7M FREQUENCY f (Hz) PULSE RESPONSE INPUT OUTPUT INPUT MONITOR | 220 PULSE GENERATOR f = 100 kHz 0 1 2 3 a 5 6 TIME t (ys) STABILITY BOUNDATY CONDITIONS A UNSTABLE < STABLE - 2 Ww cc oe 5 B UNSTABLE uw us o 3 x= - < wu 0 0.001 0.003 0.01 0.03 0.1 0.3 OPEN LOOP VOLTAGE GAIN Ay (dB) POWER DISSIPATION Pp (W) Ta = 25C VKA = VREF BVKA=5V @lk C VKaA = 10V @lk DVKa = 15V Gl ABLE UNSTABLE D UNSTABLE 3 10 30 LOAD CAPACITANCE CL (yF) GND Ik = 10mA Ta = 25C 10k 100 k iM 10M FREQUENCY f (Hz) Pp - Ta 156C /W 20 40 60 80 100 120 AMBIENT TEMPERATURE Ta (C) Test Circuit for CurveA 150 Q 10MA | Ik 10 mA 10mA Test Circuit for CurveB, C, D 1500, If ---qdF--- oO rc 100 1998-12-24 6/7TOSHIBA TA76431AS OUTLINE DRAWING SSIP3-P-1.27 Unit : mm 5.1MAX Po zt = Ww | 0.75MAX ~~ f 1.0MAX it Wl}- O.80MAX ||| re o] x 0.60MAXx =| | z al yf os HL l 1.27 1.27 2.54 Weight : 0.36g (Typ.) 1998-12-24 7/7