CAT ma CMOS LDO Regulator

Transcription

1 5 m CMOS LDO Regulator Description The CT629 is a 5 m CMOS low dropout regulator that provides fast response time during load current and line voltage changes. The quick-start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn-on time of just 5 s. With zero shutdown current and low ground current of 55 typical, the CT629 is ideal for battery-operated devices with supply voltages from 2.3 V to 5.5 V. n internal under voltage lockout circuit disables the output at supply voltages under 2.5 V typical. The CT629 offers % initial accuracy and low dropout voltage, 3 mv typical at 5 m. Stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost. Other features include current limit and thermal protection. The LDO is available in fixed and adjustable output in the low profile ( mm max height) 5 lead TSOT23, 6 pad.5 mm x.5 mm WDFN and in the 6 pad 2 mm x 2 mm TDFN packages. Features Guaranteed 5 m Peak Output Current Low Dropout Voltage of 3 mv Typical at 5 m Stable with Ceramic Output Capacitor External nf Bypass Capacitor for Low Noise Quick start Feature Under Voltage Lockout No load Ground Current of 55 Typical Full load Ground Current of 85 Typical ±.% Initial ccuracy (V OUT 2. V) ±2.% ccuracy Over Temperature (V OUT 2. V) Zero Current Shutdown Mode Fold back Current Limit Thermal Protection 5 lead TSOT 23, 6 pad WDFN and TDFN Packages These Devices are Pb Free, Halogen Free/BFR Free and are RoHS Compliant pplications Cellular Phones Battery powered Devices Consumer Electronics 5 TSOT 23 TD SUFFIX CSE 49E PIN CONNECTIONS VIN VOUT OUT IN NC/DJ NC BYP/DJ WDFN 6 TSOT 23 BYP/DJ TB NC (Top Views) VIN VOUT USYM WDFN 6 MV2 SUFFIX CSE 5BJ MRKING DIGRMS RVYM BYM TDFN 6 TDFN 6 VP5 SUFFIX CSE 5H UMYM US= CT629 25, CT629 25, = CT629 3 Device Code RV= CT629 8, CT629 28, = CT , CT Device Code UM = CT629 DJ Device Code Y = Production Year (last digit) M = Production Month: 9,, B, C (TDFN) B = CT6298, CT629VP5 Device Code Y = Production Year (last digit) M = Production Month: 9,, B, C TM SM UM VM (WDFN) T = CT MV2 Device Code S = CT629 28MV2 Device Code U = CT629 33MV2 Device Code V = CT629 DJMV2 Device Code M = Date Code ORDERING INFORMTION See detailed ordering and shipping information in the package dimensions section on page of this data sheet. Semiconductor Components Industries, LLC, 22 September, 22 Rev. 4 Publication Order Number: CT629/D

2 V IN 2.3 V to 5.5 V C IN F VIN VOUT CT629 V OUT C OUT 2.2 F V IN VIN VOUT V OUT C 2.3 V IN C OUT to 5.5 V F CT F R OFF ON BYP C BYP (Optional) nf OFF ON V OUT.24 V R R 2 DJ R 2 Figure. Typical pplication Circuit Table. PIN DESCRIPTIONS Name VIN BYP DJ VOUT TB Supply voltage input. Ground reference. Function Enable input (active high); a 2.5 M pull down resistor is provided. Optional bypass capacitor connection for noise reduction and PSRR enhancing. djustable input. Feedback pin connected to resistor divider. LDO Output Voltage. To be connected to the ground plane on PCB Pin Function VIN is the supply pin for the LDO. small F ceramic bypass capacitor is required between the V IN pin and ground near the device. When using longer connections to the power supply, C IN value can be increased without limit. The operating input voltage range is from 2.3 V to 5.5 V. Figure 2. djustable Output LDO is the enable control logic (active high) for the regulator output. It has a 2.5 M pull down resistor, which assures that if pin is left open, the circuit is disabled. VOUT is the LDO regulator output. small 2.2 F ceramic bypass capacitor is required between the VOUT pin and ground. For better transient response, its value can be increased to 4.7 F. The capacitor should be located near the device. For the SOT23-5 package, a continuous 5 m output current may turn-on the thermal protection. 25 internal shutdown switch discharges the output capacitor in the no-load condition. is the ground reference for the LDO. The pin must be connected to the ground plane on the PCB. BYP is the reference bypass pin. n optional. F capacitor can be connected between BYP pin and to reduce the output noise and enhance the PSRR at high frequency. DJ is the adjustable input pin for the adjustable LDO. The pin is connected to the resistor voltage divider. Table 2. BSOLUTE MXIMUM RTINGS Parameter Rating Unit V IN to 6.5 V V, V OUT.3 to V IN +.3 V Junction Temperature, T J +5 C Power Dissipation, P D Internally Limited (Note ) mw Storage Temperature Range, T S 65 to +5 C Lead Temperature (soldering, 5 sec.) 26 C ESD Rating (Human Body Model) 3 kv Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Table 3. RECOMMDED OPERTING CONDITIONS (Note 2) Parameter Range Unit V IN 2.3 to 5.5 V V to V IN V Junction Temperature Range, T J 4 to +25 C Package Thermal Resistance, θ J SOT23 5 Package Thermal Resistance, θ J TDFN 6 NOTE: Typical application circuit with external components is shown above.. The maximum allowable power dissipation at any T (ambient temperature) is P Dmax = (T Jmax T )/ J. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 2. The device is not guaranteed to work outside its operating rating C/W 2

3 Table 4. ELECTRICL OPERTING CHRCTERISTICS (Note 3) (V IN = V OUT +. V, V = High, I OUT =, C IN = F, C OUT = 2.2 F, ambient temperature of 25 C (over recommended operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.) Symbol Parameter Conditions Min Typ Max Unit V OUT CC Output Voltage ccuracy Initial accuracy for V OUT 2. V. +. % (Note 6) TC OUT Output Voltage Temp. Coefficient 4 ppm/ C V R LINE Line Regulation V IN = V OUT +. V to 5.5 V.2 ±. +.2 %/V V R LOD Load Regulation I OUT = to 5 m.5 % V DROP Dropout Voltage (Note 4) I OUT = 5 m 3 4 mv I Ground Current I OUT = I OUT = 5 m 85 I SD Shutdown Ground Current V <.4 V PSRR Power Supply Rejection Ratio f = khz, C BYP = nf 64 db f = 2 khz, C BYP = nf 54 I SC Output short circuit current limit V OUT = V 2 m T ON Turn On Time C BYP = nf 5 s e N Output Noise Voltage (Note 5) BW = Hz to khz 45 Vrms R OUT SH Shutdown Switch Resistance 25 R Enable pull down resistor 2.5 M V UVLO Under voltage lockout threshold 2.5 V ESR C OUT equivalent series resistance 5 5 m V DJ djustable input voltage I OUT = V BLE INPUT V HI Logic High Level V IN = 2.3 to 5.5 V.8 V V IN = 2.3 to 5.5 V, C to +25 C junction temperature.6 V LO Logic Low Level V IN = 2.3 to 5.5 V.4 V I Enable Input Current V =.4 V.5 V = V IN.5 4 THERML PROTECTION T SD Thermal Shutdown 6 C T HYS Thermal Hysteresis C 3. Specification for 2.8 V output version unless specified otherwise. 4. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value. During test, the input voltage stays always above the minimum 2.3 V. 5. Specification for.8 V output version. 6. For V OUT < 2. V, the initial accuracy is ±2% and across temperature ±3%

4 TYPICL CHRCTERISTICS (shown for 2.8 V output option) (V IN = 3.85 V, I OUT =, C IN F, = C OUT = 2.2 F, C BYP = nf, T = 25 C unless otherwise specified.) OUTPUT VOLTGE (V) m 5 m OUTPUT VOLTGE (V) INPUT VOLTGE (V) INPUT VOLTGE (V) Figure 3. Dropout Characteristics Figure 4. Line Regulation OUTPUT VOLTGE (V) OUTPUT VOLTGE (V) OUTPUT LOD CURRT (m) TEMPERTURE ( C) Figure 5. Load Regulation Figure 6. Output Voltage vs. Temperature 7 65 GROUND CURRT ( ) GROUND CURRT ( ) INPUT VOLTGE (V) TEMPERTURE ( C) Figure 7. Ground Current vs. Input Voltage Figure 8. Ground Current vs. Temperature 4

5 TYPICL CHRCTERISTICS (shown for 2.8 V output option) (V IN = 3.85 V, I OUT =, C IN F, = C OUT = 2.2 F, C BYP = nf, T = 25 C unless otherwise specified.) GROUND CURRT ( ) OUTPUT LOD CURRT (m) Figure 9. Ground Current vs. Load Current m DROPOUT VOLTGE (mv) DROPOUT VOLTGE (mv) TEMPERTURE ( C) OUTPUT LOD CURRT (m) Figure. Dropout vs. Temperature (5 m Load) Figure. Dropout vs. Load Current.6 8 BLE THRESHOLD (V) PSRR (db) C BYP = C BYP = nf E+.E+2.E+3.E+4.E+5 INPUT VOLTGE (V) FREQUCY (Hz) Figure 2. Enable Threshold vs. Input Voltage Figure 3. PSRR vs. Frequency ( m Load) 5

6 TRNSIT CHRCTERISTICS (shown for 2.8 V output option) (V IN = 3.85 V, I OUT =, C IN F, = C OUT = 2.2 F, C BYP = nf, T = 25 C unless otherwise specified.) Figure 4. Enable Turn on ( Load) Figure 5. Enable Turn off ( Load) Figure 6. Enable Turn on (5 m Load) Figure 7. Enable Turn off (5 m Load) Figure 8. Line Transient Response (3.85 V to 4.85 V) Figure 9. Load Transient Response (. m to 5 m) 6

7 VIN VOUT VIN VOUT + + DJ BLE Enable Logic V REF + BYPSS BLE Enable Logic V REF + Figure 2. Block Diagram Fixed Voltage Figure 2. Block Diagram djustable Voltage 7

8 PCKGE DIMSIONS TSOT 23, 5 LED CSE 49E ISSUE O e D SYMBOL MIN NOM MX b.3.45 c E E D E 2.9 BSC 2.8 BSC E.6 BSC e.95 TYP L L.6 REF TOP VIEW L2 θ.25 BSC º 8º 2 b L L c L2 SIDE VIEW D VIEW Notes: () ll dimensions are in millimeters. ngles in degrees. (2) Complies with JEDEC MO-93. 8

9 PCKGE DIMSIONS TDFN6, 2x2 CSE 5H ISSUE D DETIL E2 DP SIZE.8 x.2 PIN# IDTIFICTION PIN# INDEX RE D2 TOP VIEW SIDE VIEW BOTTOM VIEW SYMBOL MIN NOM MX e REF b b DETIL L D D E E2.9.. e.65 TYP L FRONT VIEW 3 Notes: () ll dimensions are in millimeters. (2) Complies with JEDEC standard MO

10 PCKGE DIMSIONS WDFN6.5x.5,.5P CSE 5BJ ISSUE B 2X PIN ONE REFERCE. C D ÍÍÍÍ ÍÍÍÍ 2X. C TOP VIEW DETIL B.5 C 3 B E EXPOSED Cu L DETIL LTERNTE TERMINL CONSTRUCTIONS MOLD CMPD L DETIL B LTERNTE CONSTRUCTIONS ÉÉ 3 NOTES:. DIMSIONING ND TOLERNCING PER SME Y4.5M, CONTROLLING DIMSION: MILLIMETERS. 3. DIMSION b PPLIES TO PLTED TERMINL ND IS MESURED BETWE.5 ND.3mm FROM TERMINL TIP. 4. COPLNRITY PPLIES TO THE EXPOSED PD S WELL S THE TERMINLS. MILLIMETERS DIM MIN MX REF b.2.3 D.5 BSC E.5 BSC e.5 BSC L.4.6 L L2.5.7 GERIC MRKING DIGRM*.5 C NOTE 4 SIDE VIEW C SETING PLNE X M L2 DETIL 3 e 5X L X = Specific Device Code M = Date Code = Pb Free Package (*Note: Microdot may be in either location) *This information is generic. Please refer to device data sheet for actual part marking. Pb Free indicator, G or microdot, may or may not be present. 6 4 BOTTOM VIEW 6X b. C.5 C B NOTE 3 RECOMMDED MOUNTING FOOTPRINT* 5X 6X PITCH DIMSIONS: MILLIMETERS *For additional information on our Pb Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.

11 ORDERING INFORMTION (Notes 7 9) Device Order Number CT629 25TDGT3 Specific Device Marking US Package Type CT629 28TDGT3 RV 2.8 TSOT 23 5 CT TDGT3 RV 2.85 V OUT Voltage (V) Lead Finish Shipping (Note ).25 CT629 8TDGT3 RV.8 CT629 25TDGT3 US 2.5 CT629 3TDGT3 US 3. CT629 33TDGT3 RV 3.3 CT629DJTD GT3 UM djustable CT629DJVP5GT4 F djustable CT6298VP5GT4 B TDFN 6 (2. x 2.).8 CT629VP533GT4 B 3.3 CT629 28MV2T3 CT MV2T3 T WDFN CT629 33MV2T3 U (.5 x.5) 3.3 S 2.8 CT629DJMV2 T3 V djustable NiPdu Tape & Reel, 3, Units / Reel Tape & Reel, 4, Units / Reel Tape & Reel, 3, Units / Reel 7. ll packages are RoHS compliant (Lead free, Halogen free). 8. The standard lead finish is NiPdu pre plated (PPF) lead frames. 9. For other voltage options, please contact your nearest ON Semiconductor Sales office..for information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8/D.. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device Nomenclature document, TND3/D, available at ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. listing of SCILLC s product/patent coverage may be accessed at Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. ll operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/ffirmative ction Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICTION ORDERING INFORMTION LITERTURE FULFILLMT: Literature Distribution Center for ON Semiconductor P.O. Box 563, Denver, Colorado 827 US Phone: or Toll Free US/Canada Fax: or Toll Free US/Canada orderlit@onsemi.com N. merican Technical Support: Toll Free US/Canada Europe, Middle East and frica Technical Support: Phone: Japan Customer Focus Center Phone: ON Semiconductor Website: Order Literature: For additional information, please contact your local Sales Representative CT629/D