Converters | FAN48632

2.5 MHz, 2.0 A Pulsed-Load Synchronous TinyBoost™ Regulator with Bypass Mode for GSM PA Supply

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Overview

The FAN48632 allows systems to take advantage of new battery chemistries that can supply significant energy when the battery voltage is lower than the required voltage for system power ICs. By combining built-in power transistors, synchronous rectification, and low supply current; this IC provides a compact solution for systems using advanced Li-Ion battery chemistries.
The FAN48632 is a boost regulator designed to provide a minimum output voltage (VOUT(MIN)) from a single-cell Li-Ion battery, even when the battery voltage is below system minimum. In boost mode, output voltage regulation is guaranteed to a maximum load current of 1.5 A continuous and 2.0 A pulsed. Quiescent current in Shutdown Mode is less than 3 µA, which maximizes battery life. The regulator transitions smoothly between Bypass and normal Boost Mode. The device can be forced into Bypass Mode to reduce quiescent current.
The FAN48632 is available in a 16-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP).

  • Few External Components: 0.47 µH Inductor and 0603 Case Size Input and Output Capacitors
  • Input Voltage Range: 2.35 V to 5.5 V
  • Fixed Output Voltage : 3.3 V, 3.5 V
  • Maximum Continuous Load Current of: 1.5 A at VIN of 2.6 V
  • Maximum Pulsed Load Current: of 2.0 A for GSM 217 Hz repetition rate, boosting VOUT to 3.3 V or 3.5 V
  • Up to 96% Efficient
  • True Bypass Operation when VIN > Target VOUT
  • Internal Synchronous Rectifier
  • Soft-Start with True Load Disconnect
  • Forced Bypass Mode
  • VSEL Control to Optimize Target VOUT
  • Short-Circuit Protection
  • Low Operating Quiescent Current
  • 16-Bump, 0.4 mm Pitch WLCSP

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FAN48632UC35X

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CAD Model

Pb

A

H

P

WLCSP-16

567SY

1

260

REEL

3000

N

Step-Up

Voltage Mode

2.35

5.5

3.5

1.5

96

2500

Price N/A

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Reliability Data

Die Related Summary Data

Device: FAN48632UC35X

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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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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