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TA76432FT/FC/F/FR/S
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA76432FT,TA76432FC,TA76432F,TA76432FR,TA76432S
1.26-V Adjustable High-Precision Shunt Regulators
These devices are adjustable high-precision shunt regulators whose output voltage (VKA) can be set arbitrarily using two external resistors. These devices have a precise internal reference voltage of 1.26 V, enabling them to operate at low voltage. These devices are ideal for use as error amplifiers in 3-V switching-regulator systems. In addition, they can be used as zener diodes to perform temperature compensation.
TA76432FT
Features
* * * * * * Precision reference voltage: VREF = 1.26 V 1.4% (Ta = 25C) Small temperature coefficient: |VREF| = 30 ppm/C (typ.) Adjustable output voltage: VREF VOUT 19 V Minimum cathode current for regulation: Ikmin = 0.5 mA (max.) Operating temperature: Ta = -40~85C Packages: UFV (TA76432FT), SMV (TA76432FC), PW-MINI (TA76432F/FR) and TO-92MOD (TA76432S) The TA76432FT is housed in an ultra-thin UFV package. (thickness: 0.7 mm typ.)
TA76432F/FR TA76432FC
*
TA76432S
Weight SSOP5-P-0.65C SSOP5-P-0.95 HSOP3-P-1.50 SSIP3-P-1.27
: 0.007 g (typ.) : 0.014 g (typ.) : 0.05 g (typ.) : 0.36 g (typ.)
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TA76432FT/FC/F/FR/S
Pin Assignment/Marking
TA76432FT/TA76432FC
5 4 1: NC 2: ANODE (A) 3: CATHODE (K) 4: REFERENCE (REF) 5: ANODE (A) 3 1 2 3 No. 1 2 3 Type marking (two-digit number) * TA76432F: AU * TA76432FR: BU
TA76432F/FR
Lot No. (three-digit number) Lot No. The week of manufacture The year of manufacture (last decimal digit of the year of manufacture) TA76432F CATHODE (K) ANODE (A) REFERENCE (REF) TA76432FR REFERENCE (REF) ANODE (A) CATHODE (K)
2F
1
2
TA76432S 1 2 3 TA76 432S
1: REFERENCE (REF) 2: ANODE (A) 3: CATHODE (K)
Lot No: Last decimal digit of the year of manufacture and January to December is denoted by alphabet A to L respectively. For example: Jan-2001 coded to "1A"
Note: TA76432F vs. TA76432FR: reverse pin connection.
How to Order
Product No. TA76432FT (TE85L) (surface-mount type) SMV TA76432FC (TE85L) (surface-mount type) TA76432F/R TA76432F/R (TE12L) TA76432S TA76432S (TPE6) PW-MINI (SOT-89) (surface-mount type) TO-92MOD (lead type) On cut tape (TE12L): 100/tape section Embossed tape: 1000/tape Loose in bag: 200/bag Radial tape: 2000/tape 100 1 tape 1 bag 1 tape Embossed tape: 3000/tape 1 tape Package Type UFV Embossed tape: 3000/tape 1 tape Packing Type and Capacity Minimum Order
Note: The lead pitch for the TA76432S and TA76432S (TPE6) may vary.
Functional Block Diagram
Cathode (K)
Circuit Symbol
Cathode (K)
Reference (REF)
Reference (REF)
1.26 V Anode (A)
Anode (A)
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Typical Application Circuits
1.26 V Reference (VKA = VREF) VIN VOUT = 1.26 V Shunt regulator (VKA > VREF) VIN R1
VOUT
R2
VREF
ae Ro VOUT = VREF c1 + 1 / + IREF x R1 c R/ e 2o
Precautions during Use
(1) TA76432FT, TA76432FC, TA76432F/FR, TA76432S These products contain MOS elements. Please take care to avoid generating static electricity when handling these devices. TA76432FT, TA76432FC, TA76432F/FR, TA76432S The oscillation frequency of these devices is determined by the value of the capacitor connected between the anode and the cathode. When establishing maximum operating condition parameters, please derate the maximum rating values specified in these datasheets so as to allow an operational safety margin. Use of a laminated ceramic capacitor is recommended. Precautions when handling anode pin of TA76432FT/TA76432FC Pin 2 and pin 5 should normally be shorted together. If only pin 5 is used, pin 2 should either be left open or always kept at a lower potential than pin 5. Do not leave pin 5 open and use pin 2 only.
(2)
(3)
Maximum Ratings (Ta = 25C)
Characteristics Cathode voltage Cathode current Cathode-anode reverse current Reference voltage Reference current Reference-anode reverse current TA76432FT TA76432FC Power dissipation TA76432F/FR TA76432S TA76432FT TA76432FC Thermal resistance TA76432F/FR TA76432S Operating temperature Junction temperature Storage temperature Topr Tj Tstg Rth 328 (Note 2) 250 156 -40~85 150 -55~150 C C C 2 2 C/W PD 0.38 (Note 2) 0.5 0.8 277 (Note 1) 625 W Symbol VKA IK -IK VREF IREF -IREF Rating 20 20 10 7 50 10 0.45 (Note 1) 0.2 Unit V mA mA V mA mA
Note 1: Glass epoxy substrate mounting: 30 mm 30 mm 0.8 mmt (Cu pad area 35 mm ) Note 2: Glass epoxy substrate mounting: 30 mm 30 mm 0.8 mmt (Cu pad area 50 mm )
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Recommended Operating Conditions
Characteristics Cathode voltage Cathode current Operating temperature Symbol VKA IK Topr Min VREF 0.5 -40 Typ. Max 19 15 85 Unit V mA C
3/4 3/4 3/4
Electrical Characteristics (Unless otherwise specified, Ta = 25C, IK = 5 mA)
Characteristics Reference voltage Deviation of reference input voltage over temperature Ratio of change in reference input voltage to the change in cathode voltage Reference Input current Deviation of reference input current over temperature Minimum cathode current for regulation Off-State cathode current Dynamic impedance Symbol VREF VREF (dev) DVREF/DV IREF IREF (dev) IKmin IKoff iZKAi VKA = VREF 0C < Ta < 85C, VKA = VREF = = VREF < VKA < 5 V = = 5 V < VKA < 19 V = = VKA = VREF 0C < Ta < 85C, VKA = VREF, = = R1 = 10 kW, R2 = VKA = VREF VKA = 19 V, VREF = 0 V VKA = VREF, f < 1 kHz, = 0.5 mA < IK < 15 mA == Test Condition Min 1.242 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Typ. 1.26 3 0.5 0.3 2 0.3 0.2 3/4 0.2 Max 1.278 15 2.5 mV/V 2.0 4 1.2 0.5 1.0 0.5 mA mA mA mA W Unit V mV
The deviation parameters VREF (dev) and IREF (dev) are defined as the maximum variation of the VREF and IREF over the rated temperature range. The average temperature coefficient of the VREF is defined as:
VREF max VREF (dev) min
6 aeV c REF (dev) 10 cV c REF @25C aVREF = e DTa
o / / / o ppm C
DTa
Application Circuit Example
Error amplification circuit for switching power supply
VOUT
Photocoupler
GND Shunt regulator
This circuit amplifies the difference between the switching power supply's secondary output voltage and the shunt regulator's reference voltage. It then feeds the amplified voltage back to the primary input voltage via the photocoupler.
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PDmax - Ta
0.6 0.6 : 30 30 0.8 mm t 0.5 Cupper pad area: 35 mm2
PDmax - Ta (W)
TA76432FC 0.5 0.4 Mounted on glass epoxy substate : 30 30 0.8 mm t Cupper pad area: 50 mm2 Ta = 25C
Allowable power dissipation PDmax
(W)
TA76432FT
Mounted on glass epoxy substate
0.4
0.3
Allowable power dissipation PDmax
0.3 0.2
0.2
0.1
0.1
0 0
20
40
60
80
100
120
140
160
0 0
20
40
60
80
100
120
140
160
Ambient temperature Ta (C)
Ambient temperature Ta (C)
PDmax - Ta
1.2 1.0 : 15 15 0.8 mm t 1.0 Ta = 25C
PDmax - Ta (W)
TA76432S
Allowable power dissipation PDmax
(W)
TA76432F, FR
Mounted on ceramic substate
Allowable power dissipation PDmax
120 140 160
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0 0
0 20 40 60 80 100 0 20 40 60 80 100 120 140 160
Ambient temperature Ta (C)
Ambient temperature Ta (C)
IK - VKA
20 Input VKA 300 Input
IK - VKA
VKA IK IK min
(mA)
(mA) IK
IK 10
200 VKA = VREF Ta = 25C
IK
Cathode current
Cathode current
VKA = VREF Ta = 25C
100
0 85C 25C Ta = -40C -10 -1.0 -0.5 0 0.5 1.0 1.5
85C 25C 0 Ta = -40C 85C -100 -1.0 -0.5 0 0.5
Ta = -40C 25C
1.0
1.5
Cathode voltage VKA
(V)
Cathode voltage VKA
(V)
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VREF - Ta
1.29 VKA = VREF Input IK = 5 mA
DVREF - VKA (mV) Change in reference voltage DVREF
-2 -4 VKA IK 0
(V)
1.28
VREF
Reference voltage VREF
1.27
Input -6 VREF -8 R2 R1
VKA IK
1.26
1.25
IK = 5 mA Ta = 25C
1.24 -80
-40
0
40
80
120
160
-10 0
5
10
15
20
Ambient temperature Ta (C)
Cathode voltage VKA
(V)
IREF - Ta
4.0 Input 10k9 VKA 100 50 220 W IK eo RS
ZKA - f
eo = ei Z KA RS + ZKA ei Z KA RS
(mA)
(W)
IK
30
RS ZKA eo =
Reference current IREF
IREF IK = 5 mA 2.0
ZKA
3.0
10 5 3 GND
ei
Dynamic impedance
e R \ZKA = o S ei
Ta = 25C VKA = VREF 0.5 mA -IK 15 mA
1 0.5 0.3
1.0
0.0 -40
0
40
80
120
160
0.1 1k
10 k
100 k
1M
Ambient temperature Ta (C)
Frequency f
(Hz)
AV - f
60 10 k9 220 9 IK VOUT 5 0
Pulse response
Input Input monitor Pulse Generator f = 100 kHz GND 1.5 1.0 0.5 Output 50 9 220 W Output
(dB)
50 40
10 mF VIN
Open loop voltage gain AV
10 k9
GND
20 10 0
IK = 5 mA Ta = 25C
Voltage swing
30
()
0 -10 1k 10 k 100 k 1M 10 M 0 1 2 3 4 5 6
Frequency f
(Hz)
Time t (ms)
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Stability boundaty conditions
20
(mA)
IK 15 CL
Cathode current
IK
10
Unstable
Stable
Ta = 25C VKA = VREF
5
0 0.001
0.003
0.01
0.03
0.1
0.3
1
3
5
10
30
100
Load capacitance CL
(mF)
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Package Dimensions
TA76432FT (UFV) Weight: 0.007 g (typ.)
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Package Dimensions
TA76432FC (SMV) Weight: 0.014 g (typ.)
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Package Dimensions
TA76432F/FR (PW-MINI) Weight: 0.05 g (typ.)
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Package Dimensions
TA76432S (TO-92MOD) Weight: 0.36 g (typ.)
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RESTRICTIONS ON PRODUCT USE
000707EBA
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice.
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