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MAX8890 - Integrated Cellular RF-Section Power-Management

General Description

The MAX8890 is a power-management IC intended for cellular handsets using a single lithium-ion (Li+) cell battery with input voltages from +2.5V to +5.5V.

Key Features

  • include short-circuit and thermal-overload protection. The MAX8890 is available in a compact, high-power, 12-pin 4mm ✕ 4mm QFN package with a metal pad on the underside.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2075; Rev 2; 10/02 MAX8890 Integrated Cellular RF-Section Power-Management IC General Description The MAX8890 is a power-management IC intended for cellular handsets using a single lithium-ion (Li+) cell battery with input voltages from +2.5V to +5.5V. The IC contains three identical, low-noise, low-dropout (LDO) linear regulators to provide all of the supply voltage requirements for the RF portion of the handset. The first LDO is intended to power the transmitter, receiver, and synthesizer. The second LDO is intended to power the TCXO, and high-power voltage-controlled oscillators (VCOs). The third LDO is intended to power the UHF offset VCO. Each LDO has its own individual enable (ON/OFF) control to maximize design flexibility.