FAN2564 Fairchild Semiconductor, FAN2564 Datasheet

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FAN2564

Manufacturer Part Number
FAN2564
Description
Fan2564 ? 300ma Low Vin Ldo For Digital Applications
Manufacturer
Fairchild Semiconductor
Datasheet
© 2007 Fairchild Semiconductor Corporation
FAN2564 • Rev. 1.0.1
FAN2564
300mA Low V
Features
Applications
Typical Application Circuit
Input Voltage 1.65V to 3.6V
Guaranteed 300mA Output
High Initial Output Voltage Accuracy: ±1%
Fixed Output Voltage options from 1.2V to 2.8V
Very Low Dropout: 100mV at 300mA
45µA Quiescent Current at No Load
Low Output Noise of 100µV
Inrush Current Controlled to Less Than 500mA
PSRR of 60dB at 1kHz
100µs Startup Time
Stable with Ceramic Capacitors
Thermal and Short-Circuit Protection
4-bump WLCSP, 0.5mm Pitch
6-pin 2 x 2mm UMLP
Post Regulator
Cell Phones and Smart Phones
WLAN, 3G, and 4G Data Cards
PMP and MP3 Players
IN
RMS
LDO for Digital Applications
Figure 1.
Typical Application Circuit
Description
The FAN2564 operates from a minimum input of 1.65V
and provides outputs as low as 1.2V. Output current is
guaranteed to 300mA, making this regulator ideal for
digital loads.
The unique low input voltage capability and very low
dropout make this device an ideal post regulator to a
synchronous buck regulator. In this configuration, accu-
rate low voltage regulation is provided without the ineffi-
ciencies typically related to linear regulators.
The enable pin can be used to initiate shutdown mode,
where the operating current falls to an extremely low
10nA, typically.
The FAN2564 is designed to be stable with space-
saving ceramic capacitors as small as 0402 case size.
The FAN2564 is available in 4-bump 0.5mm pitch wa-
fer-level chip-scale package (WLCSP) and a 6-lead 2 x
2mm ultra-thin molded leadless package (UMLP).
January 2009
www.fairchildsemi.com

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FAN2564 Summary of contents

Page 1

... The FAN2564 is designed to be stable with space- saving ceramic capacitors as small as 0402 case size. The FAN2564 is available in 4-bump 0.5mm pitch wa- fer-level chip-scale package (WLCSP) and a 6-lead 2 x 2mm ultra-thin molded leadless package (UMLP). Figure 1. ...

Page 2

... Notes: For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. 1. Other voltage options available upon request. Contact a Fairchild representative. Block Diagram © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 Temperature Package (1) Range –40 to 85°C WLCSP-4 0.5mm Pitch – ...

Page 3

... B2 3 VIN © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 EN VIN Figure 4. Figure 5. UMLP, Leads Facing Down Description Ground. Power and IC ground. All signals are referenced to this pin. . Connect to output voltage. V OUT Input Voltage. Connect to input power source. ...

Page 4

... Junction-to-ambient thermal resistance is a function of application and board layout. This data is measured with four-layer 2s2p boards in accordance to JESD51- JEDEC standard. Special attention must be paid not to exceed junction temperature T © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 Parameter Human Body Model per JESD22-A114 Charged Device Model per JESD22-C101 ...

Page 5

... Dropout voltage is the minimum input to output differential voltage needed to maintain V nominal value. This parameter is only specified for output voltages greater than or equal to 1.8V. 5. This electrical specification is guaranteed by design. © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 =-40°C to +85°C, test circuit is Figure 1, typical values are at A Conditions I ...

Page 6

... Unless otherwise noted OUT(Nominal) and T =25°C. A Figure 6. Output Voltage Change vs. Temperature Figure 8. Dropout Voltage Figure 10. Ground Current vs. V © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 +0.5V or 1.8V (whichever is greater), V Figure 7. Figure =1mA IN LOAD 6 =1.2V,C =1µF, C =4.7µF, OUT IN OUT Output Voltage vs. Minimum Input Voltage Ground Current vs ...

Page 7

... Typical Performance Characteristics Unless otherwise noted OUT(Nominal) and T =25°C. A Figure 11. Load Transient, V Figure 13. Line Transient, I Figure 15. Enable Characteristics © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 +0.5V or 1.8V (whichever is greater 1.2V Figure 12. OUT = 1mA Figure 14. LOAD Figure 16. 7 =1.2V,C =1µF, C =4.7µF, OUT IN OUT Load Transient ...

Page 8

... Unless otherwise noted OUT(Nominal) and T =25°C. A Figure 17. Inrush Current Figure 19. Power Supply Rejection Ratio Figure 21. Noise Density © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 +0.5V or 1.8V (whichever is greater), V Figure 18. Figure 20. Figure 22. 8 =1.2V,C =1µF, C =4.7µF, OUT IN OUT Inrush Current Power Supply Rejection Ratio Noise Density www ...

Page 9

... The heat contributed by the dissipation of other de- JA vices located nearby must be included in design consid- erations. Capacitors Selection The FAN2564 is stable with a wide range of capacitor values and sizes. , load current, and the IN For loop stability, a 1µF input capacitor or bigger is rec the die; the JA ommended ...

Page 10

... C should be placed close to the device for IN OUT optimal transient response and device behavior. A dedi- cated ground plane is recommended for proper GND connection. Figure 23. Assembly Diagram Figure 24. Top Layer © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 Figure 25. Bottom Layer 10 www.fairchildsemi.com ...

Page 11

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0 0.03 C ...

Page 12

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2007 Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0 2.0 0.50 ...

Page 13

... Fairchild Semiconductor Corporation FAN2564 • Rev. 1.0.1 13 www.fairchildsemi.com ...

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