SM72238TDX-3.3/NOPB

Manufacturer Part NumberSM72238TDX-3.3/NOPB
DescriptionLow Dropout Controllers - LDO SolarMagic MicroPwr Vtg Regs
ManufacturerTexas Instruments
SM72238TDX-3.3/NOPB datasheet
 


Specifications of SM72238TDX-3.3/NOPB

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FEATURES
1
Renewable Energy Grade
2
High-Accuracy Output Voltage
Guaranteed 100mA Output Current
Extremely Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Use as Regulator or Reference
Needs Minimum Capacitance for Stability
Current and Thermal Limiting
Stable With Low-ESR Output Capacitors
(10mΩ to 6Ω)
Block Diagram and Typical Applications
1
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Micropower Voltage Regulator
Check for Samples:
SM72238
DESCRIPTION
The SM72238 is a micropower voltage regulator with
very low quiescent current (75µA typ.) and very low
dropout voltage (typ. 40mV at light loads and 380mV
at 100mA). It is ideally suited for use in battery-
powered systems. Furthermore, the quiescent current
of the SM72238 increases only slightly in dropout,
prolonging battery life.
The SM72238 is available in the surface-mount D-
Pak package.
Careful design of the SM72238 has minimized all
contributions to the error budget. This includes a tight
initial tolerance (.5% typ.), extremely good load and
line regulation (.05% typ.) and a very low output
voltage temperature coefficient, making the part
useful as a low-power voltage reference.
Figure 1. SM72238
SM72238
SNVS694B – JANUARY 2011 – REVISED MAY 2011
Copyright © 2011, Texas Instruments Incorporated

SM72238TDX-3.3/NOPB Summary of contents

  • Page 1

    ... Block Diagram and Typical Applications 1 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. All trademarks are the property of their respective owners. 2 PRODUCTION DATA information is current as of publication date. ...

  • Page 2

    ... Design Limit Units V max V min 3.045 V max 2.955 V min 3.060 V max 2.940 V min = 1µF. Limits appearing in boldface type 25° Copyright © 2011, Texas Instruments Incorporated ...

  • Page 3

    ... At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account. (8) Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 50mA load pulse at V Copyright © 2011, Texas Instruments Incorporated (1) Typ Tested Limit 3 ...

  • Page 4

    ... 100 kHz C = 200µ 3.3µF L (Bypass = 0.01µF) 4 Submit Documentation Feedback (1) (2) Typ Tested Limit 430 160 100 Product Folder Links: SM72238 www.ti.com (3) Design Limit Units µV rms µV rms µV rms Copyright © 2011, Texas Instruments Incorporated ...

  • Page 5

    ... Quiescent Current Figure 3. Input Current Figure 5. Output Voltage vs. Temperature of 3 Representative Units Figure 7. Copyright © 2011, Texas Instruments Incorporated Typical Performance Characteristics Product Folder Links: SM72238 SM72238 SNVS694B – JANUARY 2011 – REVISED MAY 2011 Dropout Characteristics Figure 4. Input Current Figure 6. ...

  • Page 6

    ... Typical Performance Characteristics (continued) Quiescent Current Figure 9. Quiescent Current Figure 11. Dropout Voltage Figure 13. 6 Submit Documentation Feedback Short Circuit Current Line Transient Response Copyright © 2011, Texas Instruments Incorporated Product Folder Links: SM72238 www.ti.com Quiescent Current Figure 10. Figure 12. Figure 14. ...

  • Page 7

    ... Typical Performance Characteristics (continued) Load Transient Response Figure 15. Output Impedance Figure 17. Ripple Rejection Figure 19. Copyright © 2011, Texas Instruments Incorporated SNVS694B – JANUARY 2011 – REVISED MAY 2011 Load Transient Response Product Folder Links: SM72238 SM72238 Figure 16. Ripple Rejection Figure 18 ...

  • Page 8

    ... Typical Performance Characteristics (continued) Shutdown Threshold Voltage Figure 21. Maximum Rated Output Current Figure 23. 8 Submit Documentation Feedback Output Capacitor ESR Range Figure 25. Copyright © 2011, Texas Instruments Incorporated Product Folder Links: SM72238 www.ti.com Line Regulation Figure 22. Thermal Response Figure 24. ...

  • Page 9

    ... Typical Applications *Minimum input-output voltage ranges from 40mV to 400mV, depending on load current. Current limit is typically 160mA. Copyright © 2011, Texas Instruments Incorporated APPLICATION HINTS Figure 25). SM72238 Figure 26 ...

  • Page 10

    ... SM72238 SNVS694B – JANUARY 2011 – REVISED MAY 2011 Schematic Diagram 10 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Links: SM72238 www.ti.com ...

  • Page 11

    ... SM72238TDE-3.3/NOPB ACTIVE PFM SM72238TDE-5.0/NOPB ACTIVE PFM SM72238TDX-3.0/NOPB ACTIVE PFM SM72238TDX-3.3/NOPB ACTIVE PFM SM72238TDX-5.0/NOPB ACTIVE PFM (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. ...

  • Page 12

    MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Only one of markings shown within the brackets will appear on the physical device. Important Information and ...

  • Page 13

    ... Device Package Package Type Drawing SM72238TDE-3.0/NOPB PFM NDP SM72238TDE-3.3/NOPB PFM NDP SM72238TDE-5.0/NOPB PFM NDP SM72238TDX-3.0/NOPB PFM NDP SM72238TDX-3.3/NOPB PFM NDP SM72238TDX-5.0/NOPB PFM NDP PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 3 250 178 ...

  • Page 14

    ... Device Package Type SM72238TDE-3.0/NOPB PFM SM72238TDE-3.3/NOPB PFM SM72238TDE-5.0/NOPB PFM SM72238TDX-3.0/NOPB PFM SM72238TDX-3.3/NOPB PFM SM72238TDX-5.0/NOPB PFM PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) NDP 3 250 NDP 3 250 NDP 3 250 ...

  • Page 15

    NDP0003B www.ti.com MECHANICAL DATA TD03B (Rev F) ...

  • Page 16

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products (also referred to herein as “ ...