MAX8882EUTGG+T - Maxim Integrated

General Description

The MAX8882/MAX8883 dual, low-noise, low-dropout

linear regulators operate from a +2.5V to +6.5V input and

deliver up to 160mA each of continuous current. Both ver-

sions offer low output noise and low dropout of only 72mV

at 80mA. Designed with an internal P-channel MOSFET

pass transistor, the MAX8882/MAX8883 maintain a low

165μA supply current (both LDOs on), independent of the

load current and dropout voltage. Other features include

short-circuit protection and thermal-shutdown protection.

The MAX8882 has a single shutdown input and provides

an external reference bypass pin to improve noise perfor-

mance. The MAX8883 includes two independent logic-

controlled shutdown inputs. The MAX8882/MAX8883 are

both available in a miniature 6-pin SOT23 package.

Applications

● μP/DSP Core/IO Power

● Cellular and PCS Telephones

● PDAs and Palmtop Computers

● Notebook Computers

● Digital Cameras

● Hand-Held Instruments

Features

● Two LDOs in Tiny SOT23

● Up to 160mA Output Current (each LDO)

● 40μVRMS Output Noise (MAX8882)

● 72mV Dropout at 80mA Load

● Low 165μA Operating Supply Current

● 62dB PSRR (greater than 56dB to 100kHz)

● Independent Low-Power Shutdown Controls

(MAX8883)

● Thermal-Overload and Short-Circuit Protection

● Output Current Limit

***Other combinations between 1.8V and 3.3V are available in

100mV increments. Contact factory for other versions.

Minimum order quantity is 50,000 units.

*See Selector Guide

19-1818; Rev 2; 5/18

PART

SHUT-

DOWN

TEMP

RANGE

PIN-

PACKAGE

MAX8882EUT_ _* Single -40°C to +85°C 6 SOT23-6

MAX8883EUT_ _* Dual -40°C to +85°C 6 SOT23-6

PART VOUTA VOUTB TOP MARK

MAX8882EUTJJ 2.85 2.85 AANR

MAX8882EUTAQ 3.3 2.5 AAPW

MAX8882EUTA5 3.3 1.8 AARY

MAX8882XEUTA5 3.3 N.C. ACVL

MAX8882EUTQ5 2.5 1.8 AAPX

MAX8882EUTGG 3.0 3.0 AAZT

MAX8883EUTJJ 2.85 2.85 AANS

MAX8883EUTAQ 3.3 2.5 AAPY

MAX8883EUTA5 3.3 1.8 AARZ

MAX8883EUTQ5 2.5 1.8 AAPZ

MAX8883EUTGG 3.0 3.0 AAZU

Ordering Information

Selector Guide

Typical Operating Circuit

VOUTA

FIXED

(1.8V to 3.3V)

VOUTB

FIXED

(1.8V to 3.3V)

OUTA

OUTB

(BP)

MAX8882

MAX8883

GND

0.01µF

( ) ARE FOR MAX8882 ONLY.

SHDN_

VIN

2.5V to 6.5V

2.2µF

Click here for production status of specic part numbers.

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

IN, SHDN, SHDNA, SHDNB, BP to GND ............-0.3V to +7.0V

OUTA, OUTB to GND.................................-0.3V to (VIN + 0.3V)

Output Short-Circuit Duration .................................... Continuous

Continuous Power Dissipation (TA = +70°C)

6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..........695mW

Operating Temperature Range ........................... -40°C to +85°C

Junction Temperature ...................................................... +150°C

Storage Temperature Range ............................ -65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

(VIN = +3.6V, SHDN = SHDNA = SHDNB = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

Electrical Characteristics

PARAMETER CONDITIONS MIN TYP MAX UNITS

Input Voltage 2.5 6.5 V

Undervoltage Lockout

Threshold VIN_ rising, hysteresis 40mV typical 2.15 2.25 2.40 V

Output Voltage Accuracy

TA = +25°C, IOUT_ = 1mA -1 1

%IOUT_ = 1mA -2 2

IOUT_ = 100μA to 160mA -3 2

Maximum Output Current Continuous 160 mA

Current Limit 160 550 mA

Ground Current No Load, VIN = 6.5V 165 265 μA

IOUT_ = 80mA, both LDOs 170

Shutdown Supply Current

SHDN_ = GND, TA = +25°C 0.01 1 μA

SHDN_ = GND 0.1

SHDN_ Input Threshold VIH 1.6 V

VIL 0.4

SHDN_ Input Bias Current

SHDN_ = GND or IN, TA = +25°C 0 100 nA

SHDN_ = GND or IN 0.05

Dropout Voltage

(Notes 2, 3)

IOUT_ = 1mA 1

mVIOUT_ = 40mA 36

IOUT_ = 80mA 72 144

Line Regulation VIN = (VOUT_ + 0.4V or 2.5V) to + 6.5V,

IOUT_ = 1mA -0.2 0 0.2 %/V

Output Voltage Noise

10Hz to 100kHz, CBP = 0.01μF, COUT_ = 4.7μF,

IOUT_ = 1mA MAX8882 40 µVRMS

10Hz to 100kHz, COUT_ = 4.7μF, IOUT_ = 10mA MAX8883 320

Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these

or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability.

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

www.maximintegrated.com Maxim Integrated

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(VIN = +3.6V, SHDN = SHDNA = SHDNB = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

Note 1: All units are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: The dropout voltage is defined as VIN - VOUT when VIN = VOUT (NOM). Specification only applies when VOUT ≥ 2.5V.

Note 3: See the Typical Operating Characteristics for guaranteed specifications at voltages other than 3.3V.

(VOUT_ = 2.85V, IOUT_ = 80mA, VIN = +3.6V, COUT_ = 2.2μF, CBP = 0.01μF, and CIN = 2.2μF, unless otherwise noted.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Output Voltage AC PSRR 100Hz, CBP = 0.01μF, COUT_ = 4.7μF MAX8882 160 dB

100Hz, COUT_ = 4.7μF MAX8883 10

Thermal Shutdown

Temperature 160 °C

Thermal Shutdown

Hysteresis 10 °C

Electrical Characteristics (continued)

Typical Operating Characteristics

150

100

200

250

0 1 2 3 4 5 6

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX8882/3 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

NO LOAD

80mA LOAD, BOTH OUTPUTS

0 2010 30 40 50 60 70 80

DROPOUT VOLTAGE

vs. LOAD CURRENT

MAX8882/3 toc04

LOAD CURRENT (mA)

DROPOUT VOLTAGE (mV)

TA = +25°C

TA = -40°C

TA = +25°C

120

100

140

180

160

200

0 20 3010 40 50 60 70 80

SUPPLY CURRENT

vs. LOAD CURRENT

MAX8882/3 toc02

LOAD CURRENT (mA)

SUPPLY CURRENT (µA)

BOTH OUTPUTS LOADED

100

120

140

160

180

200

2.5 2.7 2.9 3.1 3.3

DROPOUT vs. VOUT

MAX8882/83 toc05

VOUT (V)

DROPOUT (mV)

GUARANTEED MAXIMUM

MEAN

100

120

140

160

180

200

-40 10-15 35 60 85

SUPPLY CURRENT

vs. TEMPERATURE

MAX8882/3 toc03

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

80mA LOAD, BOTH OUTPUTS

-1.0

-0.6

-0.8

-0.2

-0.4

0.2

0.4

0.8

0.6

1.0

-40 -10 5-25 20 35 50 65 80

OUTPUT VOLTAGE ACCURACY

vs. TEMPERATURE

MAX8882/83 toc06

TEMPERATURE (°C)

OUTPUT VOLTAGE (%)

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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(VOUT_ = 2.85V, IOUT_ = 80mA, VIN = +3.6V, COUT_ = 2.2μF, CBP = 0.01μF, and CIN = 2.2μF, unless otherwise noted.)

Typical Operating Characteristics (continued)

TBD

10000

0.01 10 1000

OUTPUT NOISE SPECTRAL DENSITY

vs. FREQUENCY

100

1000

MAX8882/3 toc09

NOISE DENSITY (nV/√Hz)

0.1 1100

0.01 10.1 10 100 1000

PSRR vs. FREQUENCY

MAX8882/3 toc07

FREQUENCY (kHz)

PSRR (dB)

100Ω LOAD

MAX8882 OUTPUT NOISE

(10Hz to 100kHz)

MAX8882/3 toc10

1ms/div

500µV/div

(AC-COUPLED)

VOUT_

0.01 0.1 1 1000

CHANNEL-TO-CHANNEL ISOLATION

vs. FREQUENCY

MAX8882/3 toc08

FREQUENCY (kHz)

CHANNEL-TO-CHANNEL ISOLATION (dB)

120

100

10 100

100Ω LOAD

THERMAL

COUPLING

CAPACITIVE

COUPLING

LINE TRANSIENT

MAX8882/3 toc11

50µs/div

VIN

VOUT_

4.5V

3.5V

1V/div

20mV/div

(AC-COUPLED)

10µs/div

LOAD TRANSIENT

(VIN = 3.35V, ILOAD = 0 TO 80mA)

MAX8882/3 toc12

VOUT_

ILOAD

20mV/div

(AC-COUPLED)

50mA/div

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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(VOUT_ = 2.85V, IOUT_ = 80mA, VIN = +3.6V, COUT_ = 2.2μF, CBP = 0.01μF, and CIN = 2.2μF, unless otherwise noted.)

Typical Operating Characteristics (continued)

LOAD TRANSIENT NEAR DROPOUT

MAX8882/3 toc13

10µs/div

20mV/div

50µA/div

VOUT

ILOAD

VIN = VOUT + 0.1V

SHUTDOWN RESPONSE

MAX8882/3 toc14

1ms/div

20V/div

OUTPUT

VOLTAGE

SHUTDOWN

VOLTAGE

1V/div

RLOAD = 100Ω

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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PIN NAME FUNCTION

MAX8882 MAX8882X MAX8883

1 — 1 OUTB

Regulator B Output. Sources up to 160mA continuous current. Bypass with

a 2.2μF (<0.5Ω typ ESR) capacitor to GND (see the Capacitor Selection and

Regulator Stability section

— 1 — N.C. No connect for MAX8882XEUTA5+

2 2 GND Ground. This pin also functions as a heatsink. Solder to a large pad or the

circuit-board ground plane to maximize thermal dissipation.

3 — BP Reference Noise Bypass. Bypass with a low-leakage 0.01μF ceramic

capacitor for reduced noise at both outputs.

— 3 SHDNA

Shutdown A Input. A logic low shuts down regulator A. If SHDNA and

SHDNB are both low, both regulators and the reference turn o󰀨, and supply

current is reduced to 10nA. If either SHDNA or SHDNB is a logic high, the

reference is on. Connect to IN for normal operation.

— 4 SHDNB

Shutdown B Input. A logic low shuts down regulator B. If SHDNA and

SHDNB are both low, both regulators and the reference turn o󰀨, and supply

current is reduced to 10nA. If either SHDNA or SHDNB is a logic high, the

reference is on. Connect to IN for normal operation.

4 — SHDN Shutdown Input. A logic low shuts down both regulators and the reference,

reducing the entire supply current to 10nA. Connect to IN for normal operation.

5 5 IN

Regulator Input. Supply voltage can range from +2.5V to +6.5V. This input

also supplies the on-chip reference. Bypass with 2.2μF to GND (see the

Capacitor Selection and Regulator Stability section).

6 6 OUTA

Regulator A Output. Sources up to 160mA continuous current. Bypass with

a 2.2μF (<0.5Ω typ ESR) capacitor to GND (see the Capacitor Selection and

Regulator Stability section).

Pin Description

Pin Congurations

GND

SHDN

OUTA

OUTB

MAX8882

SOT23-6

TOP VIEW

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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Detailed Description

The MAX8882/MAX8883 are low-noise, low-dropout,

low-quiescent-current linear regulators designed primarily

for battery-powered applications. These parts are avail-

able with preset output voltages ranging from 1.8V to

3.3V, and the parts can supply loads up to 160mA.

Shutdown

MAX8882

The MAX8882 has a single shutdown control input

(SHDN). Drive SHDN low to shut down both outputs,

reducing supply current to 10nA. Connect SHDN to a

logic-high, or IN, for normal operation.

MAX8883

The MAX8883 has independent shutdown control inputs

(SHDNA and SHDNB). Drive SHDNA low to shut down

OUTA. Drive SHDNB low to shut down OUTB. Drive both

SHDNA and SHDNB low to shut down the entire chip,

reducing supply current to 10nA. Connect both SHDNA

and SHDNB to a logic-high, or IN, for normal operation.

Internal P-Channel Pass Transistor

The MAX8882/MAX8883 feature two 1Ω P-channel

MOSFET pass transistors. A P-channel MOSFET

provides several advantages over similar designs using

PNP pass transistors, including longer battery life. It

requires no base drive, which reduces quiescent current

significantly. PNP-based regulators waste considerable

current in dropout when the pass transistor saturates,

and they also use high base-drive currents under large

loads. The MAX8882/MAX8883 do not suffer from these

problems and only consume 165μA of quiescent current

whether in dropout, light-load, or heavy-load applications

(see the Typical Operating Characteristics). While a PNP-

based regulator has dropout voltage that is independent

of the load, a P-channel MOSFET’s dropout voltage is

proportional to load current, providing for low dropout

voltage at heavy loads and extremely low dropout voltage

at lighter loads.

Current Limit

The MAX8882/MAX8883 contain two independent current

limiters, one for each regulator, which monitor and control

the pass transistor’s gate voltage, limiting the guaranteed

maximum output current to 160mA minimum. The output

can be shorted to ground for an indefinite time without

damaging the part.

Thermal-Overload Protection

Thermal-overload protection limits total power dissipation

in the MAX8882/MAX8883. When the junction tempera-

ture exceeds TJ = +160°C, the thermal sensor signals the

shutdown logic, turning off the pass transistor and allow-

ing the IC to cool. The thermal sensor will turn the pass

transistor on again after the IC’s junction temperature

cools by 10°C, resulting in a pulsed output during continu-

ous thermal-overload conditions.

Thermal-overload protection is designed to protect the

MAX8882/MAX8883 in the event of fault conditions. For

continual operation, do not exceed the absolute maximum

junction-temperature rating of TJ = +150°C.

Operating Region and Power Dissipation

The MAX8882/MAX8883’s maximum power dissipation

depends on the thermal resistance of the case and circuit

board, the temperature difference between the die junc-

tion and ambient air, and the rate of air flow. The power

dissipation across the device is P = IOUT (VIN - VOUT)

(Figure 1). The maximum power dissipation is:

PMAX = (TJ - TA) / (TJB + TBA)

where TJ - TA is the temperature difference between the

MAX8882/MAX8883 die junction and the surrounding air,

TJB (or TJC) is the thermal resistance of the package,

and TBA is the thermal resistance through the printed

circuit board, copper traces, and other materials to the

surrounding air.

The GND pin of the MAX8882/MAX8883 performs the

dual functions of providing an electrical connection to the

ground and channeling heat away. Connect the GND pin

to ground using a large pad or ground plane.

Figure 1. MAX8882/MAX8883 Safe Operating Region

100

160

140

120

180

021345

SAFE OPERATING REGION

MAX8882/3 fig01

VIN - VOUT_ (V)

IOUT_ (mA)

+85°C

+70°C

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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Low-Noise Operation (MAX8882)

An external 0.01μF bypass capacitor at BP, in conjunc-

tion with an internal resistor, creates a lowpass filter.

The MAX8882 exhibits 40μVRMS of output voltage noise

with CBP = 0.01μF and COUT_ = 4.7μF. (See the Output

Noise Spectral Density graph in the Typical Operating

Characteristics.)

Applications Information

Capacitor Selection and

Regulator Stability

Use a 2.2μF capacitor on the MAX8882/MAX8883 input

and a 2.2μF capacitor on the outputs. Larger input capaci-

tor values and lower ESRs provide better supply-noise

rejection and line-transient response. To reduce noise,

improve load transients, and for loads up to 160mA, use

larger output capacitors (up to 10μF). For stable operation

over the full temperature range and with load currents up

to 80mA, use 2.2μF.

Note that some ceramic dielectrics exhibit large capaci-

tance and ESR variation with temperature. With dielec-

trics such as Z5U and Y5V, it may be necessary to use

4.7μF or more to ensure stability at temperatures below

-10°C. With X7R or X5R dielectrics, 2.2μF is sufficient

at all operating temperatures. These regulators are

optimized for ceramic capacitors, and tantalum capacitors

are not recommended.

Use a 0.01μF bypass capacitor at BP (MAX8882) for

low output voltage noise. Increasing the capacitance

will slightly decrease the output noise, but increase the

startup time. (See the Shutdown Response graph in the

Typical Operating Characteristics.)

PSRR and Operation from Sources

Other than Batteries

The MAX8882/MAX8883 are designed to deliver low

dropout voltages and low quiescent currents in battery-

powered systems. Power-supply rejection is 62dB at

low frequencies and rolls off above 100kHz. (See the

PSRR vs. Frequency graph in the Typical Operating

Characteristics.)

When operating from sources other than batteries,

improved supply-noise rejection and transient response

can be achieved by increasing the values of the input and

output bypass capacitors and through passive filtering

techniques.

Dropout Voltage

A regulator’s minimum input-output voltage differential

(or dropout voltage) determines the lowest usable supply

voltage. In battery-powered systems, this determines the

useful end-of-life battery voltage. Because the MAX8882/

MAX8883 use a P-channel MOSFET pass transistor,

their dropout voltage is a function of drain-to-source

on-resistance (RDS(ON)) multiplied by the load current

(see the Typical Operating Characteristics).

Chip Information

TRANSISTOR COUNT: 493

PROCESS: BiCMOS

GND

SHDNB

SHDNA

OUTA

OUTB

MAX8883

SOT23-6

TOP VIEW

Pin Congurations (continued)

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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Package Information

For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,

“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

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Package Information (continued)

For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,

“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

www.maximintegrated.com Maxim Integrated

│

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

2 5/18 Updated Selector Guide and Pin Description tables 1, 5

Revision History

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.

MAX8882/MAX8883 Dual, Low-Noise, Low-Dropout, 160mA Linear

Regulators in SOT23

│

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.