IC BUCK SYNC ADJ 6A 25MLP

FAN2106MPX

Manufacturer Part NumberFAN2106MPX
DescriptionIC BUCK SYNC ADJ 6A 25MLP
ManufacturerFairchild Semiconductor
SeriesTinyBuck™
TypeStep-Down (Buck)
FAN2106MPX datasheet
 


Specifications of FAN2106MPX

Internal Switch(s)YesSynchronous RectifierYes
Number Of Outputs1Voltage - Output3 ~ 21 V
Current - Output6AFrequency - Switching300kHz ~ 600kHz
Voltage - Input3 ~ 24 VOperating Temperature-10°C ~ 85°C
Mounting TypeSurface MountPackage / Case25-MLP
Power - Output2.8WMounting StyleSMD/SMT
Operating Temperature Range- 10 C to + 85 COutput Voltage0.4 V to 3.2 V
Primary Input Voltage24VNo. Of Outputs1
Output Current6ANo. Of Pins25
Filter TerminalsSMDOutput Current Max6A
Rohs CompliantYesInput Voltage Primary Max24V
For Use WithFEB167 - BOARD EVAL FOR FAN2106Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesFAN2106MPXTR  
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FAN2106 — TinyBuck™
3-24V Input, 6A, High-Efficiency,
Integrated Synchronous Buck Regulator
Features
6A Output Current
Wide Input Range: 3V - 24V
Output Voltage Range: 0.8V to 80% V
Over 95% Peak Efficiency
1% Reference Accuracy Over Temperature
Programmable Frequency Operation: 200KHz to
600KHz
Fully Synchronous Operation with Integrated
Schottky Diode on Low-Side MOSFET Boosts
Efficiency
Internal Bootstrap Diode
Internal Soft-Start
Power-Good Signal
Starts on Pre-Biased Outputs
Accepts Ceramic Capacitors on Output
External Compensation for Flexible Design
Programmable Current Limit
Under-Voltage, Over-Voltage, and Thermal
Protections
5x6mm, 25-Pin, 3-Pad MLP Package
Applications
Servers & Telecom
Graphics Cards & Displays
Computing Systems
Point-of-Load Regulation
Set-Top Boxes & Game Consoles
Ordering Information
Operating
Part Number
Temperature Range
FAN2106MPX
-10°C to 85°C
FAN2106EMPX
-40°C to 85°C
For Fairchild’s definition of please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FAN2106 • Rev. 1.1.0
Description
The FAN2106 TinyBuck™ is a highly efficient, small-
footprint,
constant-frequency,
synchronous buck regulator.
IN
The FAN2106 contains both synchronous MOSFETs
and a controller/driver with optimized interconnects in
one package, which enables designers to solve high-
current requirements in a small area with minimal
external components. Integration helps to minimize
critical
inductances,
simpler and more efficient compared to discrete
solutions.
The
FAN2106
compensation, programmable switching frequency,
and current limit. These features allow design
flexibility and optimization. High-frequency operation
allows for all-ceramic solutions.
The summing current-mode modulator uses lossless
current sensing for current feedback and over-current
protection. Voltage feedforward helps operation over
a wide input voltage range.
Fairchild’s
advanced
combined with low-R
thermally efficient MLP package, provide the ability to
dissipate high power in a small package.
Output over-voltage, under-voltage, over-current, and
thermal shutdown protections help protect the device
from damage during fault conditions. FAN2106
prevents pre-biased output discharge during startup
in point-of-load applications.
Related Application Notes
AN-8022 — TinyCalc™ Calculator
Package
Molded Leadless Package (MLP) 5x6mm
Molded Leadless Package (MLP) 5x6mm
August 2009
6A,
integrated
making
component
layout
provides
for
external
loop
BiCMOS
power
process,
internal MOSFETs and a
DS(ON)
Eco
Packing Method
Status
Green
Tape and Reel
Green
Tape and Reel
www.fairchildsemi.com

FAN2106MPX Summary of contents

  • Page 1

    ... Computing Systems Point-of-Load Regulation Set-Top Boxes & Game Consoles Ordering Information Operating Part Number Temperature Range FAN2106MPX -10°C to 85°C FAN2106EMPX -40°C to 85°C For Fairchild’s definition of please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Description The FAN2106 TinyBuck™ ...

  • Page 2

    ... Typical Application Diagram Block Diagram © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Figure 1. Typical Application Figure 2. Block Diagram 2 www.fairchildsemi.com ...

  • Page 3

    ... No Connect. This pin is not used. Ramp Amplitude. A resistor (R 25 RAMP amplitude and provides voltage feedforward functionality. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 BOOT ) from this pin to AGND can be used to program the current- ILIM ) from this pin to AGND sets the PWM switching ...

  • Page 4

    ... Typical thermal resistance when mounted on a four-layer, two-ounce PCB, as shown in Figure 26. Actual results are dependent on mounting method and surface related to the design. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Conditions Conditions VCC to AGND VIN to PGND FAN2106MPX FAN2106EMPX Parameter P1 (Q2) P2 (Q1 25° Min ...

  • Page 5

    ... Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Conditions SW = Open 0.7V 5V 600KHz SW Shutdown Rising V CC Hysteresis R = 50KΩ 24KΩ T 16V , 1. 30KΩ, IN OUT 200KΩ RAMP FAN2106MPX 25°C A FAN2106EMPX 25° 5V 2.2V CC COMP 1.2V CC COMP V = 0.8V 25° Open 500KHz 1.8V, ILIM SW OUT R = 200KΩ ...

  • Page 6

    ... EN Pull-Up Resistance EN Discharge Current FB OK Drive Resistance PGOOD Threshold (Compared REF PGOOD Output Low Note: 2. Specifications guaranteed by design and characterization; not production tested. 3. See Figure 4 for Temperature Coefficient © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 (Continued) Conditions Auto-Restart Mode, V ...

  • Page 7

    ... R T Figure 6. Frequency vs. R 1.60 1.40 1.20 1.00 0.80 0.60 -50 0 Temperature ( Figure 8. R vs. Temperature, Normalized © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 1.20 1.10 1.00 0.90 0.80 50 100 150 - vs. Temperature, Figure 5. Reference Bias Current (I FB 1.02 1.01 1.00 ...

  • Page 8

    ... OUT 100 =12V IN 80 300KHz Load (A) Figure 13. 1.8V Efficiency Over Frequency vs. OUT Load (Circuit Value Changes) © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 FAN2106 Figure 10. Application Circuit: 1.8V 1400 1200 1000 800 600 18V IN 400 200 vs. Load Figure 12. 1.8V ...

  • Page 9

    ... Typical Performance Characteristics Typical operating characteristics using the circuit shown in Figure 10. V Figure 15. SW and V OUT Figure 17. Transient Response, 2-6A Load EN Figure 19. Startup, 3A Load © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 (Continued) V OUT SW Ripple, 6A Load Figure 16. Startup with 1V Pre-Bias on V ...

  • Page 10

    ... To avoid skipping the soft-start cycle necessary to apply V before V reaches its UVLO threshold. Normal IN CC sequence for powering up would be VIN VCC EN. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Soft-start time is a function of switching frequency. LIM is ≤ 1KΩ, the BIAS Cycling V and resets the IC ...

  • Page 11

    ... Thresholds are specified Specifications section. PGOOD does not assert HIGH until the fault latch is enabled (T1.0) (see Figure 22). © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Application Information Bias Supply The FAN2106 requires a 5V supply rail to bias the IC and provide gate-drive energy. Connect a ≥ 1.0µf X5R or X7R decoupling capacitor between VCC and PGND ...

  • Page 12

    ... ILIM RAMP point varies slightly in an inverse relationship with respect to input voltage ( © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 (4) ILIM (5) The ILIM pin can source a 10µA current that can be used to establish a lower, temperature-dependent, current-limit threshold by connecting an external ...

  • Page 13

    ... IN Application note AN-8022 (TinyCalc™) calculate the compensation components. © 2009 Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 Recommended PCB Layout value, the modulator Good PCB layout and careful attention to temperature rise is essential for reliable operation of the regulator. ...

  • Page 14

    ... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. 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’ ...

  • Page 15

    ... Fairchild Semiconductor Corporation FAN2106 • Rev. 1.1.0 15 www.fairchildsemi.com ...