FAN2013B

Manufacturer Part NumberFAN2013B
DescriptionThe FAN2013B is a high-efficiency, low-noise, synchronous Pulse Width Modulated (PWM) current-mode DC-DC converter designed for low-voltage applications
ManufacturerFairchild Semiconductor
FAN2013B datasheet
 


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FAN2013B — 2A Low-Voltage, Current-Mode
Synchronous PWM Buck Regulator
Features
95% Efficiency, Synchronous Operation
Adjustable Output Voltage from 0.8V to 2.5V
4.5V to 5.5V Input Voltage Range
Up to 2A Output Current
Fixed-Frequency 1.2 MHz PWM Operation
Soft-Start Function
Excellent Load Transient Response
Power-Good Flag
Over-Voltage, Under-Voltage Lockout, Short-
Circuit, and Thermal Shutdown Protections
3x3mm 6-Lead MLP Package
Applications
Hard Disk Drive
Set-Top Box
Point-of-Load Power
Notebook Computer
Communications Equipment
Typical Application
Ordering Information
Part Number
Output Voltage
FAN2013BMPX
0.8V to 2.5V
© 2008 Fairchild Semiconductor Corporation
FAN2013B • Rev. 1.0.2
Description
The
FAN2013B
synchronous Pulse Width Modulated (PWM) current-
mode DC-DC converter designed for low-voltage
applications. It provides up to 2A continuous-load
current from the 4.5V to 5.5V input. The output voltage
is adjustable over a wide range by means of an external
voltage divider.
The FAN2013B is enabled when the input voltage on
the V
pin exceeds the UVLO threshold.
IN
A current-mode control loop with a fast transient
response ensures excellent line and load regulation.
The
fixed
1.2MHz
designers to choose a small, inexpensive external
inductor and capacitor. Filtering can be accomplished
with small components, reducing space and cost.
Protection features include input under-voltage lockout,
short-circuit protection, and thermal shutdown. Soft-
start limits inrush current during start-up conditions.
The device is available in a 3x3mm 6-lead MLP.
Figure 1.
Typical Application
Package
3x3mm 6-Lead Molded Leadless Package (MLP)
December 2010
is
a
high-efficiency,
low-noise,
switching
frequency
enables
Packing Method
Tape and Reel
www.fairchildsemi.com

FAN2013B Summary of contents

  • Page 1

    ... DC-DC converter designed for low-voltage applications. It provides continuous-load current from the 4.5V to 5.5V input. The output voltage is adjustable over a wide range by means of an external voltage divider. The FAN2013B is enabled when the input voltage on the V pin exceeds the UVLO threshold current-mode control loop with a fast transient response ensures excellent line and load regulation ...

  • Page 2

    ... Switching Node. This pin is connected to the internal MOSFET switches. 4 PVIN Supply Voltage Input. This pin is connected to the internal MOSFET switches. 5 VIN Supply Voltage Input Open Drain Power Good. © 2008 Fairchild Semiconductor Corporation FAN2013B • Rev. 1.0.2 Figure 2. Pin Assignments (Top View) Description 2 www.fairchildsemi.com ...

  • Page 3

    ... Output Capacitor OUT T Operating Ambient Temperature Range A Note: 3. Refer to the Applications section for details. © 2008 Fairchild Semiconductor Corporation FAN2013B • Rev. 1.0.2 Parameter (1) Human Body Model, JESD22-A114 Charged Device Model, JESD22-C101 , is a strong function of PCB material, board thickness, thickness and JA Parameter 3 Min ...

  • Page 4

    ... Power Good Voltage Low PG_LOW Over-Voltage Protection V OVP Threshold and Hysteresis Note: 4. Please refer to the load transient response test waveform shown in Figure 3. 1500 100ns 100 0 © 2008 Fairchild Semiconductor Corporation FAN2013B • Rev. 1.0.2 = 200mA 10µF, C OUT IN OUT = 25°C. A Conditions I = 0mA OUT V Rising ...

  • Page 5

    ... Load Current(m A) Figure 8. Output Voltage Regulation © 2008 Fairchild Semiconductor Corporation FAN2013B • Rev. 1.0 1.2V, unless otherwise noted. IN OUT V OUT OUT 1 1 Figure 5. Startup with 2A Resistive Load Figure 7. Load Transient Response, 3.3V V(100mA to 1500mA, 20µ ...

  • Page 6

    ... The internal voltage reference, V reset until V reaches the UVLO threshold. IN The FAN2013B has an internal soft-start circuit that limits the inrush current during start-up. This prevents possible voltage drops of the input voltage and eliminates the output voltage overshoot. The soft-start is implemented as a digital circuit, increasing the switch current in four steps to the P-channel current limit. Typical start-up time for a 40µ ...

  • Page 7

    ... Inductor Selection The inductor parameters directly related to device performance are saturation current and DC resistance. The FAN2013B operates with a typical inductor value of 2.2µH. The lower the DC resistance, the higher the efficiency. For saturation current, the inductor should be rated higher than the maximum load current, plus half of ...

  • Page 8

    ... 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/. © 2008 Fairchild Semiconductor Corporation FAN2013B • Rev. 1.0.2 3x3mm 6-Lead Molded Leadless Package (MLP) 8 www.fairchildsemi.com ...

  • Page 9

    ... Fairchild Semiconductor Corporation FAN2013B • Rev. 1.0.2 9 www.fairchildsemi.com ...