TDA8138 5.1V +12V REGULATOR WITH DISABLE AND RESET .. . .. . .. . OUTPUT CURRENTS UP TO 1A FIXED PRECISION OUTPUT 1 VOLTAGE 5.1V +/- 2% FIXED PRECISION OUTPUT 2 VOLTAGE 12V +/- 2% OUTPUT 1 WITH RESET FACILITY OUTPUT 2 WITH DISABLE BY TTL INPUT SHORT CIRCUIT PROTECTION AT BOTH OUTPUTS THERMAL PROTECTION LOW DROP OUTPUT VOLTAGE AVAILABLE ALSO IN HEPTAWATT PACKAGE IN TWO VERSIONS : TDA8138A (DISABLE ONLY), TDA8138B (RESET ONLY) DESCRIPTION The TDA8138 is a monolithic dual positive voltage regulator designed to provide fixed precision output voltages of 5.1V and 12V at currents up to 1A. An internal reset circuit generates a reset pulse when the output 1 decrease below the regulated voltage value (for TDA8138 and TDA8138B). Output 2 can be disabled by TTL input (for TDA8138 and TDA8138A). Short circuit and thermal protections are included in all the versions. SIP9 (Plastic Package) ORDER CODE : TDA8138 HEPTAWAT (Plastic Package) ORDER CODE : TDA8138A / TDA8138B PIN CONNECTIONS 9 8 OUTPUT 1 OUTPUT 2 7 6 N.C. 7 OUTPUT1 6 OUTPUT2 N.C. FOR TDA8138A RESET FOR TDA8138B GROUND DISABLEFOR TDA8138A DEL. CAPA FOR TDA8138B 5 5 RESET GROUND 4 DISABLE 3 3 2 DEL. CAP. INPUT 2 2 INPUT 2 1 INPUT 1 1 INPUT 1 Tab. connected to Pin 5 May 1993 HEPTAWATT 4 8138-01A.EPS - 8138-01B.EPS SIP9 Tab. connected to Pin 4 1/6 TDA8138 BLOCK DIAGRAM (SIP9 package) IN 1 IN 2 1 2 REFERENCE OUT 1 PROTECTION 9 OUT 1 6 RESET RESET 3 DELAY CAPACITOR DISABLE 4 DISABLE OUT 2 8 OUT 2 TDA8138 8138-02.EPS 5 Symbol Value Unit VIN DC Input Voltage Pin 1 20 V VDIS Disable Input Voltage Pin 3 (Heptawatt) or Pin 4 (SIP9) 20 V VRST Output Voltage at Pin 6 (SIP9) or Pin 5 (Heptawatt) 20 V IO1, 2 Output Currents Internally Limited Power Dissipation Internally Limited Pt Parameter Tstg Storage Temperature -65 to +150 o Tj Junction Temperature 0 to +150 o C C 8138-01.TBL ABSOLUTE MAXIMUM RATINGS Symbol Rth (j-c) Rth (j-a) Tj 2/6 Parameter Maximum Thermal Resistance Junction-case for SIP9 Maximum Thermal Resistance Junction-case for Heptawatt Value Unit 8 3 o C/W o Maximum Thermal Resistance Junction-ambient for SIP9 60 Maximum Recommended Junction Temperature 130 C/W o C/W o C 8138-02.TBL THERMAL DATA TDA8138 ELECTRICAL CHRACTERISTICS (VIN1 = 7V, VIN2 = 14V, Tj = 25oC, unless otherwise specified) Symbol Min. Typ. Max. Unit VO1 Output Voltage IO1 = 10mA 5 5.1 5.2 V VO2 Output Voltage IO2 = 10mA 11.76 12 VO1 Output Voltage VO2 Output Voltage 7V < VIN1 < 14V 14 < VIN2 < 18V 5mA < IO1,2 < 750mA VIO1,2 Dropout Voltage VO1,2LI VO1,2LO VO1RST Test Conditions 12.24 V 4.9 5.3 V 11.5 12.5 V IO1,2 = 750mA IO1,2 = 1A 1.4 2 V V Line Regulation 7V < VIN1 < 14V 14 < VIN2 < 18V IO1,2 = 200mA 50 120 mV mV Load Regulation 5mA < IO1 < 0.6A 5mA < IO2 < 0.6A 100 250 mV mV Quiescent Current IO1 = 10mA Output 2 Disabled 2 mA Reset Thrseshold Voltage K = VO1 K0.25 K - 0.1 V 50 75 mV K - 0.4 Reset Thrseshold Hysteresis See circuit description tRD Reset Pulse Delay Ce = 100nF See circuit description VRL Saturation Voltage in Reset Condition I5 = 5mA 0.4 V IRH Leakage Current in Normal Condition (at Pin 6 for SIP9 or Pin 5 for Heptawatt) V5 = 10V 10 µA KO1,2 Output Voltage Thermal Drift Tj = 0 to 125oC ∆VO ⋅ 106 KO = ∆T ⋅ VO IO1,2SC Short Circuit Output Current VIN1 = 7V, VIN2 = 14V VIN1,2 = 16V (see Note) VDISH Disable Voltage High (out 2 active) VDISL Disable Voltage Low (out 2 disabled) VRTH IDIS Disable Bias Current Tjsd Junction Temperature for Thermal Shut Down 20 25 ms ppm/oC 100 1.6 1 2 0V < VDIS < 7V A A V -100 145 0.8 V 2 µA 8138-03.TBL IQ Parameter o C Note : Safe permanent short-circuit is only guaranteed for input voltages up to 16V. CIRCUIT DESCRIPTION The TDA8138 is a dual voltage regulator with Reset and Disable (TD8138A : Disable only, TDA8138B : Reset only). The two regulation parts are supplied from one voltage reference circuit trimmed by zener zap during EWS test. Since the supply voltage of this last is connected at Pin 1 (VIN1), the regulator 2 will not work if Pin 1 is not supplied. The outputs stage have been realized in darlington configuration with a drop typical 1.2V. The disable circuit, switch-off the output 2 if a voltage lower than 0.8V is applied at Pin 3 (Heptawatt) or Pin 4 (SIP9) The Reset circuit checks the voltage at the output 1. If this one goes below VOUT - 0.25V (4.85V typ.), the comparator "a" (see Figure 1) discharges rapidly the capacitor Ce and the reset output goes at once Low. When the voltage at the out1 rises above VOUT - 0.2V (4.9V typ.), the voltage VCe increases linearly to 2.5V corresponding to a delay Ce ⋅ 2.5V (see Figure 2), td following the law : t1 = 10µA then the reset output goes high again. To avoid gliches in the reset output, the second comparator "b" has a large hysteresis (1.9V). 3/6 TDA8138 Figure 1 10µA REF 2.5V + - OUT 1 9 a - 50 + b RESET 6 REG Ce 8138-03.EPS 3 2.5V 0.6V Figure 2 5.1V ∆Vout LOW 4.9V 4.85V TD TD 8138-04.EPS RESET TYPICAL APPLICATION (SIP9 package) RESET 0.1µF Ce 6 V IN1 3 1 9 V O1 8 V O2 TDA8138 C1 2 C2 5 4 C3 DISABLE C1 to C4 = 10 µF 4/6 C4 8138-05.EPS V IN2 TDA8138 PACKAGE MECHANICAL DATA 9 PINS - PLASTIC HEPTAWATT E L D1 C D M A M1 L1 L5 L2 G2 G1 H3 G L3 F PM-HEPTV.EPS L7 H2 F1 Dia. L6 A C D D1 E F F1 G G1 G2 H2 H3 L L1 L2 L3 L5 L6 L7 M M1 Dia. Min. Millimeters Typ. 2.4 1.2 0.35 0.6 2.41 4.91 7.49 2.54 5.08 7.62 10.05 Max. 4.8 1.37 2.8 1.35 0.55 08 0.9 2.67 5.21 7.8 10.4 10.4 Min. 0.094 0.047 0.014 0.024 0.095 0.193 0.295 Max. 0.189 0.054 0.110 0.053 0.022 0.031 0.035 0.105 0.205 0.307 0.409 0.409 0.668 0.587 0.848 0.891 3 15.8 6.6 0.102 0.594 0.236 2.8 5.08 3.65 0.100 0.200 0.300 0.396 16.97 14.92 21.54 22.62 2.6 15.1 6 Inches Typ. 0.118 0.622 0.260 0.110 0.200 3.85 0.144 HEPTV.TBL Dimensions 0.152 5/6 TDA8138 PACKAGE MECHANICAL DATA 9 PINS - PLASTIC SIP C L3 D L1 c2 d1 N 1 9 L a1 L2 A M b1 e3 e c1 PM-SIP9.EPS b3 B A a1 B b1 b3 C c1 c2 D d1 e e3 L L1 L2 L3 M Min. Millimeters Typ. 2.7 Max. 7.1 3 24.8 Min. 0.106 0.5 0.85 Inches Typ. Max. 0.280 0.118 0.976 0.020 1.6 0.033 3.3 0.43 1.32 0.063 0.130 0.017 0.052 21.2 0.835 14.5 2.54 20.32 0.571 0.100 0.800 3.1 0.122 3 17.6 0.118 0.693 0.25 3.2 0.010 0.126 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 6/6 SIP9.TBL Dimensions