MAX8890ETCDDD+T Maxim Integrated Products, MAX8890ETCDDD+T Datasheet

MAX8890ETCDDD+T

Manufacturer Part Number

MAX8890ETCDDD+T

Description

IC POWER MANAGE CELL 12-TQFN

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX8890ETCAAAT.pdf (12 pages)

Specifications of MAX8890ETCDDD+T

Applications

Handheld/Mobile Devices

Current - Supply

180µA

Voltage - Supply

2.5 V ~ 5.5 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

12-TQFN Exposed Pad

0444

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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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) con-

trol to maximize design flexibility. The reference is pow-

ered on if any of the enable inputs (EN1, EN2, EN3) are

logic high. The high-accuracy output voltage of each

LDO is preset at an internally trimmed voltage (1.8V to

3.3V in 50mV increments). Each LDO is capable of sup-

plying 100mA with a low 50mV dropout and is opti-

mized for low noise and high crosstalk-isolation.

Designed with internal P-channel MOSFET pass transis-

tors, the MAX8890’s low 180µA operating supply cur-

rent is independent of load.

Other features include short-circuit and thermal-over-

load protection. The MAX8890 is available in a com-

pact, high-power, 12-pin 4mm

with a metal pad on the underside.

19-2075; Rev 2; 10/02

*Nonstandard output voltages between 1.80V and 3.30V are

available in 50mV increments.

Standard Versions table and Pin Configuration appear at

end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

SUFFIX

Cellular Handsets

Single-Cell Li+ Systems

3-Cell NiMH, NiCD, or Alkaline Systems

Personal Digital Assistants (PDAs)

VOLTAGE (V)

OUTPUT

3.30

3.00

2.90

2.85

2.80

Standard Preset Output

________________________________________________________________ Maxim Integrated Products

General Description

Voltage Suffixes

SUFFIX

4mm QFN package

Applications

VOLTAGE (V)

Integrated Cellular RF-Section

OUTPUT

2.75

2.70

2.50

2.00

1.80

*Each preset output voltage of these devices is factory

trimmed to one of ten voltages. Replace “xyz” with the letters

corresponding to the desired output voltages (see Standard

Preset Output Voltage Suffixes table), where the three letter

suffix corresponds to the following output voltages: “x” =

Note: There are five standard versions available (see Standard

Versions table). Sample stock is generally held on standard

versions only. Standard versions have an order increment

requirement of 2500 pieces. Nonstandard versions have an

order increment requirement of 10,000 pieces. Contact the

factory for availability of nonstandard versions.

Power-Management IC

MAX8890ETCxyz* -40 C to +85 C

OUT1

Three 100mA Low-Dropout Linear Regulators

Low 50mV Dropout Voltage at 100mA

±1% Output Voltage Accuracy Over Temperature

Preset 1.8V to 3.3V Output Voltages

(in 50mV Increments)

Low 45µV

Low 180µA Operating Supply Current

2.5V to 5.5V Input Voltage Range

67dB PSRR

10µV

Short-Circuit Protection

Thermal-Overload Protection

0.01µA Shutdown Current

Tiny 12-Pin 4mm x 4mm QFN Package

, “y” = V

PART

P-P

INPUT

Channel-to-Channel Crosstalk

OFF

RMS

OUT2

Typical Operating Circuit

, and “z” = V

Output Voltage Noise

TEMP RANGE

IN1

IN2

IN3

EN1

EN2

EN3

Ordering Information

MAX8890

OUT3

OUT1

OUT2

OUT3

GND

PIN PACKAGE

12 (4mm x 4mm) QFN

Features

OUTPUT #1

OUTPUT #2

OUTPUT #3

Related parts for MAX8890ETCDDD+T

MAX8890ETCDDD+T Summary of contents

Page 1

... Standard Versions table and Pin Configuration appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Integrated Cellular RF-Section ...

Page 2

Integrated Cellular RF-Section Power-Management IC ABSOLUTE MAXIMUM RATINGS IN_, EN_ to GND.......................................................-0.3V to +6V OUT_ GND ......................................-0. Output Short-Circuit Protection (Note A) .......................indefinite Continuous Power Dissipation (T = +70°C) A 12-Pin QFN (derate ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 3.6V, EN_ = IN_ 6.8µ noted. Typical values are +25°C.) A PARAMETER SYMBOL ENABLE LOGIC CONTROL EN_ Input Threshold EN_ Input Bias Current THERMAL PROTECTION Thermal-Shutdown ...

Page 4

Integrated Cellular RF-Section Power-Management IC (Circuit of Figure 1, MAX8890ETCGGG, V OUTPUT VOLTAGE vs. INPUT VOLTAGE 3.0 2.5 2.0 1.5 1.0 0 LOAD OUT INPUT VOLTAGE (V) DROPOUT VOLTAGE ...

Page 5

Figure 1, MAX8890ETCGGG, V LOAD TRANSIENT MAX8890 toc10 s/div 1mA to 100mA, 50mA/div OUT 2.8V, 20mV/div OUT +500mV) IN OUT CROSSTALK VOLTAGE ...

Page 6

Integrated Cellular RF-Section Power-Management IC (Circuit of Figure 1, MAX8890ETCGGG, V ENABLE WAVEFORM (1ST OUTPUT) 20 s/div 3.3V, 5V/div EN1 2.8V (100mA), 2V/div OUT1 OUT1 1.25V, ...

Page 7

INPUT 2.5V TO 5.5V Figure 1. Typical Application Circuit Detailed Description The MAX8890 power-management IC for a cellular phone. The MAX8890 contains three low-noise, low quiescent current, low-dropout, linear regulators for powering the transmitter, receiver, synthesizer, TCXO, ...

Page 8

Integrated Cellular RF-Section Power-Management IC R SENSE IN1 EN1 IN2 EN2 IN3 EN3 Figure 2. Functional Diagram If any one of the three low-dropout linear regulators (LDOs) is enabled, the internal 1.25V reference powers up. Therefore, all three LDOs must ...

Page 9

When the junction temperature exceeds T thermal sensor activates the shutdown logic, disabling the overheated regulator. The thermal sensor turns the linear regulator on again after the regulator’s junction temperature cools by 15°C, resulting in a pulsed output during continuous ...

Page 10

Integrated Cellular RF-Section Power-Management IC Pin Configuration TOP VIEW OUT1 GND OUT3 IN1 1 IN2 2 MAX8890 OUT2 EN1 EN2 EN3 4 4 QFN 10 ______________________________________________________________________________________ VERSION MAX8890ETCAAA MAX8890ETCDDD MAX8890ETCGGG 9 IN3 MAX8890ETCMMM ...

Page 11

For the latest package outline information www.maxim-ic.com/packages.) PACKAGE OUTLINE 12,16,20,24L QFN THIN, 4x4x0.8 mm PACKAGE OUTLINE 12,16,20,24L QFN THIN, 4x4x0.8 mm ______________________________________________________________________________________ Integrated Cellular ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products ...

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