TDA8133 ,+5.1 V AND +8 V DUAL-VOLTAGE REGULATOR WITH DISABLE AND RESET FUNCTIONSFEATURES■ Input Voltage Range: 7 V to 18 V■ Output Currents up to 750 mA■ Fixed Precision Output 1 ..
TDA8133D , 5.1 V AND 8 V DUAL-VOLTAGE REGULATOR WITH DISABLE AND RESET FUNCTIONS
TDA8136 ,DUAL 12V REGULATOR WITH DISABLETDA8136DUAL 12V REGULATOR WITH DISABLE.OUTPUT CURRENTS UP TO 600mA.FIXED PRECISION OUTPUT 1 VOLTAGE ..
TDA8137 ,DUAL 5.1V REGULATOR WITH DISABLE AND RESETTDA8137DUAL 5.1V REGULATOR WITH DISABLE AND RESET.OUTPUT CURRENTS UP TO 1A.FIXED PRECISION OUTPUT V ..
TDA8138 ,5.1V+ 12V REGULATOR WITH DISABLE AND RESETTDA81385.1V +12V REGULATOR WITH DISABLE AND RESET.OUTPUT CURRENTS UP TO 1A.FIXED PRECISION OUTPUT 1 ..
TDA8138A ,5.1V +12V regulator with disableTDA81385.1V +12V REGULATOR WITH DISABLE AND RESET.OUTPUT CURRENTS UP TO 1A.FIXED PRECISION OUTPUT 1 ..
TI380C25PGE ,Token Ring Commprocessor 144-LQFP
TI380C25PGE ,Token Ring Commprocessor 144-LQFP
TI380C30PGF ,Integrated Token-Ring Commprocessor And Physical Layer Interface 176-LQFP 0 to 0
TI380C60APAHR ,TI380C60A CMOS Ring Interface Device 52-TQFP 0 to 0
TIBPAL16L8--10MJB ,High-Performance Impact-X<TM> PAL<R> Circuits 20-CDIP -55 to 125
TIBPAL16L8-15MJB ,High-Performance Impact<TM> PAL<R> Circuits 20-CDIP -55 to 125TIBPAL16L8-15M is Not Recommended for New DesignsTIBPAL16L8-15M, TIBPAL16R4-15M®HIGH-PERFORMANCE IM ..
TDA8133
+5.1 V AND +8 V DUAL-VOLTAGE REGULATOR WITH DISABLE AND RESET FUNCTIONS
PRELIMINARY DATA
TDA8133/D+5.1 V AND +8 V DUAL-VOLT AGE REGULATOR
WITH DISABLE AND RESET FUNCTIONS
FEA TURES Input Voltage Range: 7 V to 18V Output Currents up to 750 mA Fixed Precision Output 1 Voltage: 5.1 V ±2% Fixed Precision Output 2 Voltage: 8 V ±2% Output 1 with Reset Function Output 2 with Disable Function by TTL Input Short-circuit Protection at both Outputs Thermal Protection Low Dropout Voltage
DESCRIPTIONThe TDA8133 and the TDA8133D are monolithic
dual positive voltage regulators designed to provide
fixed precision output voltages of 5.1 V and 8.0V
for currents up to 750 mA.
An internal reset circuit generates a reset pulse
when the voltage of Output 1 drops below the
regulated voltage value.
Output 2 can be disabled via the TTL input.
Short-circuit and thermal protections are included in
all versions.
TDA8133/D
TABLE OF CONTENTS
Chapter 1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Chapter 2 ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42.1 Absolute Maximum Ratings ................................................................................................4
2.2 Thermal Data ......................................................................................................................4
2.3 Electrical Characteristics ......................................................................................................4
Chapter 3 CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Chapter 4 APPLICATION DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Chapter 5 POWER DISSIPATION AND LAYOUT INDICATIONS . . . . . . . . . . . . . . . . . . . . . .9
Chapter 6 PACKAGE MECHANICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Chapter 7 REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
TDA8133/D GENERAL INFORMATION GENERAL INFORMATION
Figure 1: TDA8133 Block Diagram
Figure 2: TDA8133D Block Diagram
ELECTRICAL CHARACTERISTICS TDA8133/D ELECTRICAL CHARACTERISTICS
2.1 Absolute Maximum Ratings
2.2 Thermal Data
2.3 Electrical Characteristics AMB= 25° C, VIN1 = 7 V, VIN2 = 10 V, unless otherwise specified. Mounted on board. For more information, refer to Section5.
TDA8133/D ELECTRICAL CHARACTERISTICS The output short-circuit currents are tested one channel at time. During a short-circuit, a large consumption
of power occurs, but the thermal protection circuit prevents any excessive temperatures. A safe permanent
short-circuit protection is only guaranteed for input voltages up to 16V.
CIRCUIT DESCRIPTION TDA8133/D CIRCUIT DESCRIPTIONThe TDA8133 and the TDA8133D are dual-voltage regulators with Reset and Disable functions.
The two regulation parts are supplied from a single voltage reference circuit trimmed by zener
zapping during EWS testing. Since the supply voltage of this voltage reference is connected to pin
INPUT1 (VIN1 ), the second regulator will not work if pin INPUT1 is not supplied.
The output stages are designed using a Darlington configuration with a typical dropout voltage of
1.2V.
The Disable circuit will switch off pin OUTPUT2 if a voltage less than 0.8 V is applied to pin
DISABLE.
The Reset circuit checks the voltage at pin OUTPUT1. If this voltage drops below VO1 - 0.25V
(4.85 V Typ.), the "a" comparator (Figure 3) rapidly discharges the external capacitor (Ce) and the
reset output immediately switches to low. When the voltage at pin OUTPUT1 exceeds VO1 - 0.2V
(4.9 V Typ.), the VCe voltage increases linearly to the reference voltage (V REF = 2.5 V)
corresponding to a Reset Pulse Delay (tRD ) as shown in Figure4.
Afterwards, the reset output returns to high. To avoid glitches in the reset output, the second
comparator "b" has a large hysteresis (1.9 V).
Figure 3: Reset DiagramtRD Ce 2.5V×
10μA--------------------------=
TDA8133/D CIRCUIT DESCRIPTION
Figure 4: Internal Reset Voltage
