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Details, datasheet, quote on part number:TPS73HD301PWPR
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Datasheet text preview:
TPS73HD301, TPS73HD318, TPS73HD325 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
SLVS167C SEPTEMBER 1998 REVISED MAY 1999
D D D D D D D D
Dual Output Voltages for Split-Supply Applications 3.3-V/Adjustable Output, 3.3 V/1.8 V, and 3.3 V/2.5 Dropout Voltage < 80 mV Max at IO = 100 mA (3.3-V option) Low Quiescent Current, Independent of Load . . . 340 µA Typ Per Regulator Ultra-Low-Current Sleep State . . . 2 µA Max Dual Active-Low Reset Signals with 200-ms Pulse Width Output Current Range of 0 mA to 750 mA Per Regulator 28-Pin PowerPADTM TSSOP Package
PWP PACKAGE (TOP VIEW)
NC NC 1GND 1EN 1IN 1IN NC NC 2GND 2EN 2IN 2IN NC NC
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1RESET NC NC 1FB/SENSE 1OUT 1OUT 2RESET NC NC 2SENSE 2OUT 2OUT NC NC
description
NC No internal connection
The TPS73HD3xx family of dual voltage regulators offers very low dropout voltages and dual outputs in a compact package. Designed primarily for DSP applications, these devices can be used in any mixed-output voltage application with each regulator supporting up to 750 mA. Output current can be allocated as desired between the two regulators and used to power many of todays DSPs. Low quiescent current and very low dropout voltage assure maximum power usage in battery-powered applications. Texas Instruments PowerPAD TSSOP package allows use of these devices with any voltage/current combination within the range of the listed specifications without thermal problems, provided proper device mounting procedures are followed. Separate inputs allow the designer to configure the source power as desired. Dual active-low reset signals allow resetting of core-logic and I/O separately. Remote sense/feedback terminals provide regulation at the load. The TPS73HD3xx are available in 28-pin PowerPAD TSSOP. They operate over a free-air temperature range of 40°C to 125°C.
AVAILABLE OPTIONS TA REGULATOR 1 VO (V) Adj (1.2 9.75 V) 40°C to 125°C 1.8 V 2.5 V REGULATOR 2 VO (V) 3.3 V 3.3 V 3.3 V TSSOP (PWP) TPS73HD301PWPR TPS73HD318PWPR TPS73HD325PWPR
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 1999, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
TPS73HD301, TPS73HD318, TPS73HD325 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
SLVS167C SEPTEMBER 1998 REVISED MAY 1999
functional block diagram
IN EN
+ OUT RESET Vref = 1.182 V Delayed Reset R1 SENSE/FB
R2 GND Switch positions shown with EN low (active). OUTPUT VOLTAGE Adjustable 1.8 V 2.5 V 3.3 V R1 0 122 260 420 R2 UNIT k k k
233 233 233
Terminal Functions
TERMINAL NAME NC NO. 1, 2, 7, 8, 1316, 20, 21, 26, 27 3 4 5, 6 9 10 11, 12 17, 18 19 22 23, 24 25 28 I I O I O O I O I I I/O No connection DESCRIPTION
1GND 1EN 1IN 2GND 2EN 2IN 2OUT 2SENSE 2RESET 1OUT 1FB/SENSE 1RESET
Regulator #1 ground Regulator #1 enable, low = enable Regulator #1 input supply voltage Regulator #2 ground Regulator #2 enable, low = enable Regulator #2 input supply voltage Regulator #2 output voltage Regulator #2 output voltage sense (fixed output) Regulator #2 reset signal, low = reset Regulator #1 output voltage Regulator #1 output voltage feedback (adjustable output) Regulator #1 reset signal, low = reset
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TPS73HD301, TPS73HD318, TPS73HD325 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
SLVS167C SEPTEMBER 1998 REVISED MAY 1999
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Input voltage range, VI (xIN, xRESET, xSENSE, xEN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 11 V Differential input voltage,VID (1GND to 2GND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 V Output current, IO (1OUT, 2OUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Tables Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 125°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . 260°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltages are with respect to GND. DISSIPATION RATING TABLE 1 FREE-AIR TEMPERATURES PACKAGE PWP PWP§ AIR FLOW (CFM) 0 300 0 TA < 25°C POWER RATING 2.9 W 4.3 W 3W DERATING FACTOR ABOVE TA = 25°C 23.5 mW/°C 34.6 mW/°C 23.8 mW/°C TA = 70°C POWER RATING 1.9 W 2.8 W 1.9 W TA = 85°C POWER RATING 1.5 W 2.2 W 1.5 W
300 7.2 W 57.9 mW/°C 4.6 W 3.8 W This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 5-in × 5-in PCB, 1 oz. copper, 2-in × 2-in coverage (4 in2). § This parameter is measured with the recommended copper heat sink pattern on a 8-layer PCB, 1.5-in × 2-in PCB, 1 oz. copper with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in2) and layers 3 and 6 at 100% coverage (6 in2).
recommended operating conditions
MIN Input voltage, VI Input voltage, VI Adjustable output (regulator #1) 3.3V output (regulator #2) 2.97 3.97 2 0.5 0 40 750 125 MAX 10 10 UNIT V V V V mA °C
High-level input voltage at EN, VIH Low-level input voltage at EN, VIL Total output current range (per regulator), IO Operating virtual junction temperature range, TJ
Minimum input voltage defined in the recommended operating conditions is the maximum specified output voltage plus dropout voltage, VDO, at the maximum specified load range (750 mA). Since dropout voltage is a function of output current, the usable range can be extended for lighter loads. To calculate the minimum input voltage for the maximum load current used in a given application, use the following equation: V I(min)
+ VO(max) ) VDO(max load)
Because regulator 1 of the TPS373HD301 is programmable, rDS(on) should be used to calculate VDO before applying the above equation. The equation for calculating VDO from rDS(on) is given in Note 3 in the TPS73HD301 electrical characteristics table. The minimum value of 3.5 V is the absolute lower limit for the recommended input voltage range for the TPS73HD301. With 2.97-V input voltage, the LDO may be in dropout and will not meet the 3% regulaotr output or 750-mA load current specification.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
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