3mA HIGH PSRR LOW NOISE LDO WITH ENABLE Description Pin Assignments The is a low dropout regulator with high output voltage accuracy, low R DSON, high PSRR, low output noise and low quiescent current. This regulator is based on a CMOS process. The consists of a voltage reference, error amplifier, current limit circuit and an enable input to turn it on and off. With the integrated resistor network fixed output voltage versions can be delivered. With its low power consumption and line and load transient response, the is well suited for low power handheld communication equipment. The is packaged in an X-DFN- package and allows for smallest footprint and dense PCB layout. PIN V OUT, PIN GND, PIN3 EN, PIN V IN Features Low V IN and Wide V IN Range:.7V to 5.5V Guarantee Output Current: 3mA V OUT Accuracy ±% Ripple Rejection 75dB at khz Low Output Noise, 6µVrms from Hz to khz Quiescent Current as Low as 35µA V OUT Fixed.V to 3.3V Totally Lead-Free & Fully RoHS Compliant (Notes & ) Halogen and Antimony Free. Green Device (Note 3) Applications Smart Phone/Pad RF Supply Cameras Portable Video Portable Media Player Wireless Adapter Wireless Communication Notes:. No purposely added lead. Fully EU Directive /95/EC (RoHS) & /65/EU (RoHS ) compliant.. See http:///quality/lead_free.html for more information about Diodes Incorporated s definitions of Halogen- and Antimony-free,"Green" and Lead-free. 3. Halogen- and Antimony-free "Green products are defined as those which contain <9ppm bromine, <9ppm chlorine (<5ppm total Br + Cl) and <ppm antimony compounds. Typical Applications Circuit V IN V OUT V IN V OUT C IN.mF EN GND C OUT.mF Figure Typical Application Circuit of 5 June 7
Functional Block Diagram V IN V OUT VREF Current Limit EN GND Pin Descriptions Pin Number Pin Name Function V OUT Power Output Pin GND Ground 3 EN V IN Power Input Pin Thermal Pad Enable Pin This pin should be driven either high or low and must not be floating. Driving this pin high enables the regulator, while pulling it low puts the regulator into shutdown mode In PCB layout, prefer to use large copper area to cover this pad for better thermal dissipation, then connect this area to GND or leave it open. However, do not use it as GND electrode function alone Absolute Maximum Ratings (Note ) (@T A = +5 C, unless otherwise specified.) Note: Symbol Parameter Ratings Unit V IN Input Voltage 6. V V CE Input Voltage EN 6. V V OUT -.3 to V IN +.3 V I OUT Output Current ma P D Power Dissipation mw T A Operating Ambient Temperature - to +85 C T STG Storage Temperature -55 to +5 C. a).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 conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. b). Ratings apply to ambient temperature at +5 C. The JEDEC High-K board design used to derive this data was a in. x in. multilayer board with oz internal power and ground planes and oz copper traces on the top and bottom of the board. of 5 June 7
Recommended Operating Conditions (@T A = +5 C, unless otherwise specified.) Symbol Parameter Min Max Unit V IN Input Voltage.7 5.5 V I OUT Output Current 3 ma T A Operating Ambient Temperature - +85 C Electrical Characteristics (@T A = +5 C, V IN =V EN = V OUT +.V, C IN = C OUT =.µf, I OUT =.ma, unless otherwise specified.) Parameter Conditions Min Typ Max Unit Input Voltage T A = - C to +85 C.7 5.5 V Accuracy (Note ) V IN = V OUT-Nom+.V to 5.5V, IOUT= ma to 3mA T A = +5 C - T A = - C to +85 C -.5 +.5 % Line Regulation (dv OUT/dV IN/V OUT) V IN = (V OUT-Nom+.V) to 5.5V, I OUT =.ma.. %/V Load Regulation (dv OUT/V OUT) V IN = V OUT-Nom+.V, I OUT = ma to 3mA 5 3 mv Quiescent Current (Note 6) I OUT = ma 35 5 µa I STANDBY V EN = V (Disabled).. µa Output Current 3 ma Fold-back Short Current (Note 7) V OUT Short to Ground 55 ma PSRR (Note 8) V IN = [V OUT +V] VDC +.Vp-pAC, V OUT.8V, I OUT = 3mA f = khz 75 db Output Noise Voltage (Notes 8 & 9) BW = Hz to khz, I OUT = 3mA 6 µvrms Dropout Voltage (Note 5) Temperature Coefficient I OUT = 5mA I OUT = 3mA.V V OUT <.5V.5.6.5V V OUT <.7V.38.7.7V V OUT <.V.3..V V OUT <.5V.8.36.5V V OUT <.8V..3.8V V OUT 3.3V..7 V OUT =.8V.5.65 V OUT =.5V.37.8 V OUT = 3.3V.3. I OUT = 3mA, T A = - C to +85 C ±3 ppm/ C EN Input Low Voltage.5 V EN Input High Voltage.3 5.5 V EN Input Leakage V EN =, V IN = 5.V or V EN = 5.V, V IN = V -. +. µa On Resistance of N-Channel for Auto-Discharge (Note ) V IN =.V V EN = V (Disabled) 3 Ω V Notes: 5. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops % below its nominal value. 6. Quiescent current is defined here is the difference in current between the input and the output. 7. Short circuit current is measured with VOUT pulled to GND. 8. This specification is guaranteed by design. 9. To make sure lowest environment noise minimizes the influence on noise measurement.. has options for output, built-in discharge and non-discharge.. Potential multiple grades based on following output voltage accuracy. 3 of 5 June 7
V OUT V OUT V OUT ADVANCED INFORMATION V OUT V OUT Typical Characteristics. vs. Output Current -8 3. vs. Output Current -5.8.5..9.6.3 V IN =.8 V V IN =3.6 V V IN =. V V IN =5V V IN =5.5 V.5..5..5 V IN =3.5V V IN =.V V IN =5V V IN =5.5V. 3 5. 3 5 3.5 vs. Output Current -33 Output Noise (-33) 3..5. V IN =.3V V IN =5V V IN =5.5V.5..5. 3 5 3.5 vs. Intput Voltage -5 3.5 vs. Intput Voltage -33 3. 3..5.5...5.5...5. I OUT =ma I OUT =3mA I OUT =5mA 3 5 Input Voltage V IN.5. I OUT =ma I OUT =3mA I OUT =5mA 3 5 Input Voltage V IN of 5 June 7
V OUT V OUT Supply Current I ss (µa) Supply Current I ss (µa) ADVANCED INFORMATION Supply Current I SS (μa) Supply Current I SS (μa) Typical Characteristics (Cont.) 5 Supply Current vs. Input Voltage -5 5 Supply Current vs. Input Voltage -33 3 3 3 5 Input Voltage V IN 3 5 Input Voltage V IN Supply Current vs. Temperature -5 Supply Current vs. Temperature -33 38 38 36 36 3 3 3 3 3-5 -5 5 5 75 Temperature Topt ( ) 3-5 -5 5 5 75 Temperature Topt ( ).55.5.53.5.5.5.9.8.7.6.5 vs. Temperature -5-5 -5 5 5 75 Temperature Topt ( ) 3.35 3.3 3.33 3.3 3.3 3.3 3.9 3.8 3.7 3.6 3.5 vs. Temperature -33-5 -5 5 5 75 Temperature Topt ( ) 5 of 5 June 7
Dropout Voltage V DIF (mv) Dropout Voltage V DIF (mv) Dropout Voltage V DIF (mv) Dropout Voltage V DIF (mv) ADVANCED INFORMATION Dropout Voltage V DIF (mv) Dropout Voltage V DIF (mv) Typical Characteristics (Cont.) 65 6 55 5 5 35 3 5 5 5 Dropout Voltage vs. Output Current -8 85 5-5 5 5 3 65 6 55 5 5 35 3 5 5 5 Dropout Voltage vs. Temperature -8 5mA 5mA 3mA -5-5 5 5 75 Temperature Topt ( ) 5 5 35 3 5 5 5 Dropout Voltage vs. Output Current -5 85 5-5 5 5 3 5 5 35 3 5 5 5 Dropout Voltage vs. Temperature -5 5mA 5mA 3mA -5-5 5 5 75 Temperature Topt ( ) 5 5 35 3 5 5 5 Dropout Voltage vs. Output Current -33 85 5-5 5 5 3 5 35 3 5 5 5 Dropout Voltage vs. Temperature -33 5mA 5mA 3mA -5-5 5 5 75 Temperature Topt ( ) 6 of 5 June 7
Ripple Rejection RR (db) Ripple Rejection RR (db) Ripple Rejection RR (db) ADVANCED INFORMATION Ripple Rejection RR (db) Ripple Rejection RR (db) Typical Characteristics (Cont.) 9 8 7 6 5 3 Ripple Rejection vs. Input Bias Voltage I -8 OUT =ma KHz KHz KHz.8 3.3 3.8.3.8 5.3 Input Voltage V IN 9 8 7 6 5 3 Ripple Rejection vs. Input Bias Voltage -8 I OUT =3mA KHz KHz KHz.8 3.3 3.8.3.8 5.3 Input Voltage V IN 8 6 Ripple Rejection vs. Frequency -33 I OUT =ma I OUT =3mA I OUT =5mA Frequency f (Hz) 9 8 7 6 5 3 Ripple Rejection vs. Frequency -5 I OUT =ma I OUT =3mA I OUT =5mA Frequency f (Hz) Ripple Rejection vs. Frequency -8 I OUT =ma I OUT =3mA I OUT =5mA 8 6 Frequency f (Hz) 7 of 5 June 7
V OUT Input Voltage V IN V OUT V OUT Input Voltage V IN Typical Characteristics (Cont.) -5-33 6 Input Voltage 5 3 Input Voltage 5.5.5 3.3 3.3.8 3.8 6 8 6 8-5 Output Current ma 5mA V IN=3.5V t R=t F=.5µs 3 5 V OUT -33 Output Current ma 5mA V IN=.3V t R=t F=.5µs 3 5.7.5.3. 6 8 3.5 3.3 3..9 6 8 V OUT -5 Output Current ma 3mA V IN=3.5V t R=t F=.5µs 6 3 V OUT -33 Output Current ma 3mA V IN=.3V t R=t F=.5µs 6 3.7 3.5.5 3.3.3 3.. 6 8.9 6 8 8 of 5 June 7
V) V CE Input Voltage V ADVANCED INFORMATION Typical Characteristics (Cont.) -5 6 V OUT V CE Input Voltage V 6 3 CE Input Voltage I OUT=mA I OUT=3mA I OUT=3mA 3 CE Input Voltage I OUT=mA I OUT=3mA I OUT=3mA CE Input Voltage V CE 8 6 3 (µs)time t (µs) 8 6 3-33-8 CE Input Voltage 6-8 V OUT 3 I OUT=mA I OUT=3mA I OUT=3mA CE Input Voltage V CE V OUT CE Input Voltage V CE 8 6 3 Time t -33-8 6-5 (Non-discharge Version) 6 CE Input Voltage Input Voltage CE Input Voltage V OUT 3 I OUT=mA I OUT=3mA I OUT=3mA CE Input Voltage V CE V OUT 3 I OUT=mA CE Input Voltage V CE 6 8 6 8 Time t 8 6 ((µs)s) 9 of 5 June 7
ESR (Ω) ESR (Ω) ADVANCED INFORMATION Application Information Output Capacitor An output capacitor (C OUT) is needed to improve transient response and maintain stability. The is stable with very small ceramic output capacitors. The ESR (equivalent series resistance) and capacitance drives the selection. If the application has large load variations, it is recommended to utilize low-esr bulk capacitors. It is recommended to place ceramic capacitors as close as possible to the load and the ground pin and care should be taken to reduce the impedance in the layout. Input Capacitor To prevent the input voltage from dropping during load steps it is recommended to utilize an input capacitor (C IN). A minimum.7μf ceramic capacitor is recommended between V IN and GND pins to decouple input power supply glitch. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both V IN and GND pins. Enable Control The is turned on by setting the EN pin high, and is turned off by pulling it low. If this feature is not used, the EN pin should be tied to V IN pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section. Short Circuit Protection When V OUT pin is short-circuit to GND, short circuit protection will be triggered and clamp the output current to approximately 6mA. This feature protects the regulator from overcurrent and damage due to overheating. Layout Considerations For good ground loop and stability, the input and output capacitors should be located close to the input, output, and ground pins of the device. The regulator ground pin should be connected to the external circuit ground to reduce voltage drop caused by trace impedance. Ground plane is generally used to reduce trace impedance. Wide trace should be used for large current paths from V IN to V OUT, and load circuit. ESR vs. Output Current Ceramic type output capacitor is recommended for this series; however, the other output capacitors with low ESR also can be used. The relations between I OUT (Output Current) and ESR of an output capacitor are shown below. The stable region is marked as the hatched area in the graph. Measurement conditions: Frequency Band: Hz to MHz, Temperature: C to +85 C ESR vs. Output Current -8 ESR vs. Output Current -33 - C 85 C - C 85 C..... 5 5 5 3 Output Current IOUT (ma). 5 5 5 3 Output Current IOUT (ma) of 5 June 7
Ordering Information (Note ) X - XX FS 7/7R Output Discharge :.V D : Output Discharge :.V 35 :.35V 5 :.5V 8 :.8V 85 :.85V :.V 5 :.5V 8 :.8V 85 :.85V 95 :.95V 3 : 3.V 3 3.V 3 : 3.V 33 : 3.3V Package FS : X-DFN- Packing 7/7R : Tape & Reel Part Number Package Code Packaging Quantity 7 Tape and Reel Part Number Suffix -XXFS-7/7R FS X-DFN- 5,/Tape & Reel -7/7R D-XXFS-7/7R FS X-DFN- 5,/Tape & Reel -7/7R Note:. For packaging details, go to our website at http:///products/packages.html. Marking Information () X-DFN- (Top View) XX Y W X XX : Identification Code Y : Year : ~9 W : Week : A~Z : ~6 week; a~z : 7~5 week; z represents 5 and 53 week X : A~Z : Internal code of 5 June 7
Marking Information (Cont.) Part Number Package Identification Code -FS-7 X-DFN- TF -FS-7 X-DFN- T -35FS-7 X-DFN- XF -5FS-7 X-DFN- T3-8FS-7 X-DFN- T -85FS-7 X-DFN- T5 -FS-7 X-DFN- TH -5FS-7 X-DFN- T6-8FS-7 X-DFN- T7-85FS-7 X-DFN- T8-95FS-7 X-DFN- 8A -3FS-7 X-DFN- T9-3FS-7 X-DFN- TC -3FS-7 X-DFN- TD -33FS-7 X-DFN- TE D-FS-7 X-DFN- UF D-FS-7 X-DFN- U D-35FS-7 X-DFN- XG D-5FS-7 X-DFN- U3 D-8FS-7 X-DFN- U D-85FS-7 X-DFN- U5 D-FS-7 X-DFN- UH D-5FS-7 X-DFN- U6 D-8FS-7 X-DFN- U7 D-85FS-7 X-DFN- U8 D-95FS-7 X-DFN- 9A D-3FS-7 X-DFN- U9 D-3FS-7 X-DFN- UC D-3FS-7 X-DFN- UD D-33FS-7 X-DFN- UE -FS-7R X-DFN- A -FS-7R X-DFN- B -35FS-7R X-DFN- R -5FS-7R X-DFN- C -8FS-7R X-DFN- D -85FS-7R X-DFN- E -FS-7R X-DFN- F -5FS-7R X-DFN- G -8FS-7R X-DFN- H -85FS-7R X-DFN- J -95FS-7R X-DFN- S -3FS-7R X-DFN- K -3FS-7R X-DFN- M -3FS-7R X-DFN- N -33FS-7R X-DFN- P D-FS-7R X-DFN- 5A D-FS-7R X-DFN- 5B D-35FS-7R X-DFN- 5R D-5FS-7R X-DFN- 5C D-8FS-7R X-DFN- 5E D-85FS-7R X-DFN- 5D D-FS-7R X-DFN- 5F D-5FS-7R X-DFN- 5G D-8FS-7R X-DFN- 5J D-85FS-7R X-DFN- 5H D-95FS-7R X-DFN- 5S D-3FS-7R X-DFN- 5K D-3FS-7R X-DFN- 5M D-3FS-7R X-DFN- 5N D-33FS-7R X-DFN- 5P of 5 June 7
Package Outline Dimensions (All dimensions in mm.) Please see http:///package-outlines.html for the latest version. X-DFN- A A A3 Seating Plane E L L C.5 E D e D C.8(3x) L X-DFN- Dim Min Max Typ A -..39 A..5. A3 - -.3 b..3.5 D.95.5. D.38.58.8 E.95.5. E.38.58.8 e - -.65 L..3.5 L.7.37.3 L...7 Z - -.5 All Dimensions in mm Z b Suggested Pad Layout Please see http:///package-outlines.html for the latest version. X-DFN- X C X3 Y Y Y3 X Y5 Y Y Dimensions Value (in mm) C.65 X.5 X.8 X.9 X3.7 Y. Y.7 Y. Y3.8 Y.3 Y5.8 X 3 of 5 June 7
Tape Orientation For -XXFS-7 & D-XXFS-7 XX XX XX For -XXFS-7R & D-XXFS-7R XX YWX XX YWX XX YWX Pin Note: 3. The taping orientation of the other package type can be found on our website at http:///datasheets/ap7.pdf. of 5 June 7
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