MAX8902BATV

更新时间： 2024-11-26 11:14:27

品牌	Logo	应用领域
美信 - MAXIM		稳压器
页数	文件大小	规格书
9页	256K
描述
Low-Noise 500mA LDO Regulators in a 2mm x 2mm TDFN Package

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MAX8902BATV 数据手册

19-0990; Rev 4; 4/11

Low-Noise 500mA LDO Regulators

in a 2mm x 2mm TDFN Package

/MAX8902B

General Description

Features

The MAX8902A/MAX8902B low-noise linear regulators

deliver up to 500mA of output current with only

♦ 1.7V to 5.5V Input Voltage Range

♦ 0.6V to 5.3V Output Voltage Range

16µV

of output noise in a 100kHz bandwidth. These

RMS

♦ 16µV

Output Noise, 10Hz to 100kHz

RMS

regulators maintain their output voltage over a wide

input range, requiring only 100mV of input-to-output

headroom at full load.

♦ 80µA Operating Supply Current

♦ 92dB PSRR at 5kHz

These LDOs maintain a low 80µA typical supply cur-

rent, independent of the load current and dropout volt-

age. The regulator control circuitry includes a

programmable soft-start circuit and short circuit,

reverse current, and thermal-overload protection. Other

features include an enable input and a power-OK out-

put (MAX8902B only).

♦ Guaranteed 500mA Output Current

♦

1.5ꢀ Output Aꢁꢁuraꢁy Oꢂer ꢃoad, ꢃine, and

Temperature

♦ 100mV (max) Dropout at 500mA ꢃoad

♦ < 1µA Shutdown Supply Current

♦ 700mA Short-Cirꢁuit Proteꢁtion

The MAX8902A output voltage can be set to 1.5V, 1.8V,

2.0V, 2.5V, 3.0V, 3.1V, 3.3V, 4.6V, or 4.7V using the

SELA and SELB inputs. The MAX8902B output voltage

can be set between 0.6V and 5.3V with an external

resistor voltage-divider.

♦ Thermal-Oꢂerload Proteꢁtion

♦ Output-to-Input Reꢂerse Current Proteꢁtion

♦ 2mm x 2mm x 0.8mm TDFN Paꢁkage

Ordering Information

Applications

TOP

MARK

Notebook Computers

PART

FEATURES

MP3 and Portable Media Players

Wireless Headphones

Pin-selectable output

voltage

MAX8902AATA+

ABG

GPS Portable Navigation Devices

Smartphones

MAX8902BATA+

Adjustable output voltage

ABH

ADL

MAX8902BATA/V+

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

Note: All devices are in an 8-pin, 2mm x 2mm TDFN package

with an exposed paddle and operate over the -40°C to +125°C

automotive temperature range.

Typical Operating Circuits

INPUT

4.7V TO 5.5V

INPUT

1.7V TO 5.5V

OUTPUT

4.6V

OUTPUT ADJUSTABLE

0.6V TO 5.3V

OUT

BYP

OUT

10μF

0.01μF

10μF

MAX8902A

MAX8902B

BYP

OFF

LOGIC

SUPPLY

OFF

OUTS

100kΩ

SELA

SELB

GND

POK

TO μC

GND

Pin Configurations appear at end of data sheet.

________________________________________________________________ Maxim Integrated Produꢁts

For priꢁing, deliꢂery, and ordering information, please ꢁontaꢁt Maxim Direꢁt at 1-888-629-4642,

or ꢂisit Maxim's website at www.maxim-iꢁ.ꢁom.

12 3 4 5 6 7...9

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