Converters | FAN53602

1.2A Synchronous Buck Regulator

Obsolete

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Overview

The FAN53602 is a 6 MHz, step-down switching voltage regulator that delivers a fixed output from an input voltage supply of 2.3 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN53602 is capable of delivering a constant load of 1.2 A.The regulator operates at a nominal fixed frequency of 6 MHz, which reduces the value of the external components to as low as 470nH for the output inductor and 4.7µF for the output capacitor. In addition, the Pulse Width Modulation (PWM) modulator can be synchronized to an external frequency source.At moderate and light loads, Pulse Frequency Modulation (PFM) is used to operate the device in Power-Save Mode with a typical quiescent current of 24 µA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 6 MHz. In Shutdown Mode, the supply current drops below 1 µA, reducing power consumption. For applications that require minimum ripple or fixed frequency, PFM Mode can be disabled using the MODE pin.The FAN53602 is available in 6-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP).

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  • 3G, 4G, WiFi®, WiMAX™, and WiBro® Data Cards
  • Tablets
  • DSC, DVC
  • Netbooks®, Ultra-Mobile PCs

  • 1.2 A Output Current Capability
  • 24 µA Typical Quiescent Current
  • 6 MHz Fixed-Frequency Operation
  • Best-in-Class Load Transient Response
  • Best-in-Class Efficiency
  • 2.3 V to 5.5 V Input Voltage Range
  • Low Ripple Light-Load PFM Mode
  • Forced PWM and External Clock Synchronization
  • Internal Soft-Start
  • Input Under-Voltage Lockout (UVLO)
  • Thermal Shutdown and Overload Protection
  • 6-Bump WLCSP, 0.4 mm Pitch

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FAN53602UC123X

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Obsolete

CAD Model

Pb

A

H

P

WLCSP-6

567QE

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.233

1.2

88

6000

Price N/A

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Reliability Data

Die Related Summary Data

Device: FAN53602UC123X

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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