Description. Table 1. Device summary KF25BD-TR KF25BDT-TR 2.5 V KF33BD-TR KF33BDT-TR 3.3 V KF50BD-TR KF50BDT-TR 5 V KF80BDT-TR

Size: px

Start display at page:

Download "Description. Table 1. Device summary KF25BD-TR KF25BDT-TR 2.5 V KF33BD-TR KF33BDT-TR 3.3 V KF50BD-TR KF50BDT-TR 5 V KF80BDT-TR"

Gilbert Parrish
5 years ago
Views:

1 Very low drop voltage regulators with inhibit Description Datasheet - production data Features SO-8 DPAK Very low dropout voltage (0.4 V) Very low quiescent current (typ. 50 µa in OFF mode, 500 µa in ON mode) Output current up to 500 ma Logic-controlled electronic shutdown Output voltages of 2.5; 3.3; 5; 8 V Internal current and thermal limit Only 2.2 µf for stability Available in ± 2 % accuracy at 25 C Supply voltage rejection: 70 db (typ.) Temperature range: - 40 to 125 C The KF series are very low drop regulators available in SO-8 and DPAK packages and in a wide range of output voltages. The very low dropout voltage (0.4 V) and the very low quiescent current make them particularly suitable for low noise, low power applications and especially in battery powered systems. A shutdown logic control function is available (pin 5, TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. It requires only a 2.2 µf capacitor for stability allowing space and cost saving. Table 1. Device summary SO-8 (tape and reel) Order codes DPAK (tape and reel) Output voltages KF25BD-TR KF25BDT-TR 2.5 V KF33BD-TR KF33BDT-TR 3.3 V KF50BD-TR KF50BDT-TR 5 V KF80BDT-TR 8 V February 2018 DocID4337 Rev 14 1/21 This is information on a product in full production.

2 Contents KFXX Contents 1 Diagram Pin configuration Maximum ratings Electrical characteristics Typical performance characteristics Package mechanical data Packaging mechanical data Revision history /21 DocID4337 Rev 14

3 Diagram 1 Diagram Figure 1. Schematic diagram DocID4337 Rev 14 3/21 21

4 Pin configuration KFXX 2 Pin configuration Figure 2. Pin connections (top view) SO-8 DPAK 4/21 DocID4337 Rev 14

5 Maximum ratings 3 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit V I DC input voltage to 20 V I O Output current Internally Limited P TOT Power dissipation Internally Limited T STG Storage temperature range - 40 to 150 C T OP Operating junction temperature range - 40 to 125 C Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 3. Thermal data Symbol Parameter DPAK SO-8 Unit R thjc Thermal resistance junction-case 8 20 C/W R thja Thermal resistance junction-ambient C/W Figure 3. Test circuit DocID4337 Rev 14 5/21 21

6 Electrical characteristics KFXX 4 Electrical characteristics Refer to the test circuits, T J = 25 C, C I = 0.1 µf, C O = 2.2 µf unless otherwise specified. Table 4. Electrical characteristics (V O = 2.5 V) Symbol Parameter Test conditions Min. Typ. Max. Unit V O Output voltage I O = 50 ma, V I = 4.5 V I O = 50 ma, V I = 4.5 V, T a = -25 to 85 C V I Operating input voltage I O = 500 ma 20 V I O Output current limit 1 A V O Line regulation V I = 3.5 to 20 V, I O = 5 ma 2 12 mv V O Load regulation V I = 3.8 V, I O = 5 to 500 ma 2 50 mv I d Quiescent current SVR Supply voltage rejection I O = 5 ma, V I = 4.5 ± 1 V V I = 3.5 to 20V, I O = 0mA ON MODE V I = 3.8 to 20V, I O =500mA 12 V I = 6 V OFF MODE µa f = 120 Hz 82 f = 1 khz 77 f = 10 khz 60 en Output noise voltage B = 10 Hz to 100 KHz 50 µv V d Dropout voltage I O = 200 ma I O = 500 ma V IL Control input logic low T a = -40 to 125 C 0.8 V V IH Control input logic high T a = -40 to 125 C 2 V I I Control input current V I = 6 V, V C = 6 V 10 µa C O Output bypass capacitance ESR = 0.1 to 10, I O = 0 to 500 ma 2 10 µf V ma db V 6/21 DocID4337 Rev 14

7 Electrical characteristics Refer to the test circuits, T J = 25 C, C I = 0.1 µf, C O = 2.2 µf unless otherwise specified. Table 5. Electrical characteristics (V O = 3.3 V) Symbol Parameter Test conditions Min. Typ. Max. Unit V O Output voltage I O = 50 ma, V I = 5.3 V I O = 50 ma, V I = 5.3 V, T a = -25 to 85 C V I Operating input voltage I O = 500 ma 20 V I O Output current limit 1 A V O Line regulation V I = 4.3 to 20 V, I O = 5 ma 2 12 mv V O Load regulation V I = 4.6 V, I O = 5 to 500 ma 2 50 mv I d Quiescent current SVR Supply voltage rejection I O = 5 ma, V I = 5.3 ± 1 V V I = 4.3 to 20V, I O = 0mA ON MODE V I = 4.6 to 20V, I O =500mA 12 V I = 6 V OFF MODE µa f = 120 Hz 80 f = 1 khz 75 f = 10 khz 60 en Output noise voltage B = 10 Hz to 100 KHz 50 µv V d Dropout voltage I O = 200 ma I O = 500 ma V IL Control input logic low T a = -40 to 125 C 0.8 V V IH Control input logic high T a = -40 to 125 C 2 V I I Control input current V I = 6 V, V C = 6 V 10 µa C O Output bypass capacitance ESR = 0.1 to 10, I O = 0 to 500 ma 2 10 µf V ma db V DocID4337 Rev 14 7/21 21

8 Electrical characteristics KFXX Refer to the test circuits, T J = 25 C, C I = 0.1 µf, C O = 2.2 µf unless otherwise specified. Table 6. Electrical characteristics (V O = 5 V) Symbol Parameter Test conditions Min. Typ. Max. Unit V O Output voltage I O = 50 ma, V I = 7 V I O = 50 ma, V I = 7 V, T a = -25 to 85 C V I Operating input voltage I O = 500 ma 20 V I O Output current limit 1 A V O Line regulation V I = 6 to 20 V, I O = 5 ma 3 18 mv V O Load regulation V I = 6.3 V, I O = 5 to 500 ma 2 50 mv I d Quiescent current SVR Supply voltage rejection I O = 5 ma, V I = 7 ± 1 V V I = 6 to 20V, I O = 0mA ON MODE V I = 6.3 to 20V, I O =500mA 12 V I = 6 V OFF MODE µa f = 120 Hz 76 f = 1 khz 71 f = 10 khz 60 en Output noise voltage B = 10 Hz to 100 KHz 50 µv V d Dropout voltage I O = 200 ma I O = 500 ma V IL Control input logic low T a = -40 to 125 C 0.8 V V IH Control input logic high T a = -40 to 125 C 2 V I I Control input current V I = 6 V, V C = 6 V 10 µa C O Output bypass capacitance ESR = 0.1 to 10, I O = 0 to 500 ma 2 10 µf V ma db V 8/21 DocID4337 Rev 14

9 Electrical characteristics Refer to the test circuits, T J = 25 C, C I = 0.1 µf, C O = 2.2 µf unless otherwise specified. Table 7. Electrical characteristics (V O = 8 V) Symbol Parameter Test conditions Min. Typ. Max. Unit V O Output voltage I O = 50 ma, V I = 10 V I O = 50 ma, V I = 10 V, T a = -25 to 85 C V I Operating input voltage I O = 500 ma 20 V I O Output current limit 1 A V O Line regulation V I = 9 to 20 V, I O = 5 ma 4 24 mv V O Load regulation V I = 9.3 V, I O = 5 to 500 ma 2 50 mv I d Quiescent current SVR Supply voltage rejection I O = 5 ma, V I = 10 ± 1 V V I = 9 to 20V, I O = 0mA ON MODE V I = 9.3 to 20V, I O =500mA 12 V I = 9 V OFF MODE µa f = 120 Hz 72 f = 1 khz 67 f = 10 khz 60 en Output noise voltage B = 10 Hz to 100 KHz 50 µv V d Dropout voltage I O = 200 ma I O = 500 ma V IL Control input logic low T a = -40 to 125 C 0.8 V V IH Control input logic high T a = -40 to 125 C 2 V I I Control input current V I = 6 V, V C = 6 V 10 µa C O Output bypass capacitance ESR = 0.1 to 10, I O = 0 to 500 ma 2 10 µf V ma db V DocID4337 Rev 14 9/21 21

10 Typical performance characteristics KFXX 5 Typical performance characteristics Unless otherwise specified V O(NOM) = 3.3 V. Figure 4. Dropout voltage vs. output current Figure 5. Dropout voltage vs. temperature Figure 6. Supply current vs. input voltage (I OUT = 500 ma) Figure 7. Supply current vs. input voltage (I OUT = 0 ma) Figure 8. Short circuit current vs. input voltage Figure 9. SVR vs. output current (f= 120 Hz) 10/21 DocID4337 Rev 14

11 Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: ECOPACK is an ST trademark. DocID4337 Rev 14 11/21 21

12 Package mechanical data KFXX Figure 10. DPAK (TO-252) type A drawing _M_type_A 12/21 DocID4337 Rev 14

13 Package mechanical data Table 8. DPAK (TO-252) type A mechanical data Dim. mm Min. Typ. Max. A A A b b c c D D E E e 2.28 e H L (L1) 2.80 L L R 0.20 V2 0 8 DocID4337 Rev 14 13/21 21

14 Package mechanical data KFXX Figure 11. DPAK (TO-252) type A footprint (a) Footprint_REV_M_type_A a. All dimensions are in millimeters 14/21 DocID4337 Rev 14

15 Package mechanical data Figure 12. SO-8 drawing _G_FU Table 9. SO-8 mechanical data Dim. mm Min. Typ. Max. A 1.75 A A b b c c D E E e 1.27 h L L L DocID4337 Rev 14 15/21 21

16 Package mechanical data KFXX Table 9. SO-8 mechanical data (continued) Dim. mm Min. Typ. Max. k 0 8 ccc 0.10 Figure 13. SO-8 recommended footprint (b) Footprint_ _G_FU b. All dimensions are in millimeters. 16/21 DocID4337 Rev 14

17 Packaging mechanical data 7 Packaging mechanical data Figure 14. Tape for DPAK (TO-252) 10 pitches cumulative tolerance on tape +/- 0.2 mm T Top cover tape P0 D P2 E B1 K0 B0 F W For machine ref. only including draft and radii concentric around B0 A0 P1 D1 User direction of feed R User direction of feed Bending radius AM08852v1 DocID4337 Rev 14 17/21 21

18 Packaging mechanical data KFXX REEL DIMENSIONS Figure 15. Reel for DPAK (TO-252) T 40mm min. Access hole At slot location B D C A N Full radius Tape slot in core for tape start 25 mm min. width G measured at hub AM08851v2 Table 10. DPAK (TO-252) tape and reel mechanical data Tape Reel Dim. mm mm Dim. Min. Max. Min. Max. A A 330 B B 1.5 B C D D 20.2 D1 1.5 G E N 50 F T 22.4 K P Base qty P Bulk qty P R 40 T W /21 DocID4337 Rev 14

19 Packaging mechanical data Figure 16. SO-8 tape and reel dimensions Table 11. SO-8 tape and reel mechanical data Dim. mm Min. Typ. Max. A 330 C D 20.2 N 60 T 22.4 Ao Bo Ko Po P DocID4337 Rev 14 19/21 21

20 Revision history KFXX 8 Revision history Table 12. Document revision history Date Revision Changes 06-Jun Order codes updated. 14-Dec Modified: Table Feb Modified: Table Oct Mar Change title description in cover page. Updated: Table 1 on page 1. Added: R thja value for DPAK and SO-8 Table 3 on page 5. Modified: titles Figure 6 and Figure 7 on page 10. The part numbers KF25B, KF33B, KF50B, KF80B changed to KF. Updated Section 6: Package mechanical data and Section 7: Packaging mechanical data. Minor text changes. 16-Feb Minor text changes. 20/21 DocID4337 Rev 14

21 IMPORTANT NOTICE PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries ( ST ) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document STMicroelectronics All rights reserved DocID4337 Rev 14 21/21 21

KF25B, KF33B KF50B, KF80B

KF25B, KF33B KF50B, KF80B Very low drop voltage regulators with inhibit Datasheet production data Features Very low dropout voltage (0.4 V) Very low quiescent current (typ. 50 µa in OFF mode, 500 µa in