Maxim MAX8867EUK29-T, MAX8867EUK30-T, MAX8867C-D50, MAX8867C-D29, MAX8867C-D30 Datasheet

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_______________General Description

The MAX8867/MAX8868 low-noise, low-dropout linear
regulators operate from a 2.5V to 6.5V input and deliver
up to 150mA. Typical output noise for these devices is
just 30µV

RMS

, and typical dropout is only 165mV at
150mA. The output voltage is preset to voltages in the
range of 2.5V to 5.0V, in 100mV increments. The
MAX8867 and MAX8868 are pin-compatible with the
MAX8863 and MAX8864, except for the BP pin.

Designed with an internal P-channel MOSFET pass
transistor, the MAX8867/MAX8868 maintain a low
100µA supply current, independent of the load current
and dropout voltage. Other features include a 10nA
logic-controlled shutdown mode, short-circuit and ther­mal-shutdown protection, and reverse battery protec­tion. The MAX8868 also includes an auto-discharge
function, which actively discharges the output voltage
to ground when the device is placed in shutdown. Both
devices come in a miniature 5-pin SOT23 package.

________________________Applications

Cellular Telephones Modems
Cordless Telephones Hand-Held Instruments
PCS Telephones Palmtop Computers
PCMCIA Cards Electronic Planners

____________________________Features

♦ Low Output Noise: 30µV

RMS

♦ Low 55mV Dropout at 50mA Output

(165mV at 150mA output)

♦ Low 85µA No-Load Supply Current
♦ Low 100µA Operating Supply Current

(even in dropout)

♦ Thermal-Overload and Short-Circuit Protection
♦ Reverse Battery Protection
♦ Output Current Limit
♦ Preset Output Voltages (±1.4% accuracy)
♦ 10nA Logic-Controlled Shutdown

MAX8867/MAX8868

Low-Noise, Low-Dropout,

150mA Linear Regulators in SOT23

________________________________________________________________

Maxim Integrated Products

1

GND

OUTIN

15BPSHDN

MAX8867
MAX8868

SOT23-5

TOP VIEW

2

34

__________________Pin Configuration

19-1302; Rev 1; 3/98

PART**

MAX8867C/Dxy

MAX8867EUKxy-T
MAX8868C/Dxy

0°C to +70°C

-40°C to +85°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

Dice*
5 SOT23-5
Dice*

______________Ordering Information

___Expanded Ordering Information

*

Dice are tested at TA= +25°C.

**

xy is the output voltage code (see Expanded Ordering
Information table).

***

Other xy between 2.5V and 5.0V are available in 100mV incre-

ments. Contact factory for other versions. Minimum order
quantity is 25,000 units.

MAX8868EUKxy-T -40°C to +85°C 5 SOT23-5

PRESET

OUTPUT

VOLTAGE

(V)

MAX886_EUK25 2.50

OUTPUT

VOLTAGE (xy)

CODE

ACAY

SOT TOP MARK

ACBF

MAX8867 MAX8868

MAX886_EUK28 2.80 ACAZ ACBG
MAX886_EUK29 2.84 ACBA ACBH
MAX886_EUK30 3.00 ACBB ACBI
MAX886_EUK32 3.15 ACBC ACBJ
MAX886_EUK33 3.30 ACBD ACBK
MAX886_EUK36 3.60 ACCZ ACDA

Other xy*** x.y0 — —

MAX886_EUK50 5.00 ACBE ACBL

MAX8867
MAX8868

INPUT

2.5V TO 6.5V
IN OUT

SHDN

C

BP

0.01µF

C

OUT

1µF

C

IN

1µF

OFF

ON

BP

GND

OUTPUT
PRESET

2.5V TO 5.0V
150mA

__________Typical Operating Circuit

MAX8867/MAX8868

Low-Noise, Low-Dropout,
150mA Linear Regulators in SOT23

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN= V

OUT(NOMINAL)

+ 0.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

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.

IN to GND....................................................................-7V to +7V

Output Short-Circuit Duration ............................................Infinite

SHDN to GND..............................................................-7V to +7V

SHDN to IN...............................................................-7V to +0.3V

OUT, BP to GND..........................................-0.3V to (V

IN

+ 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW

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

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

θ

JB

..................................................................................140°C/W

Storage Temperature Range.............................-65°C to +160°C

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

C

OUT

= 10µF

C

OUT

= 100µF

VIN= 2.5V to 5.5V

I

OUT

= 0mA, TA= +25°C

2.0

f = 10Hz to 100kHz,
C

BP

= 0.01µF

TA= +25°C 0.01 1
TA= +85°C

I

OUT

= 0mA to 120mA, C

OUT

= 1µF

No load
I

OUT

= 150mA

V

OUT

= 0V

I

OUT

= 150mA

VIN= 2.5V to 5.5V

CONDITIONS

TA= +25°C

µA

V

0.01 100

V

IH

0.4

SHDN Input Threshold

I

Q, SHDN

0.2

Shutdown Supply Current

TA= +25°C

TA= +85°C

V

SHDN

= V

IN

nAI

SHDN

0.5

SHDN Input Bias Current

V

IL

300MAX8868 only

Shutdown Discharge
Resistance

Ω

mA150Maximum Output Current

-1.4 1.4

V2.5 6.5V

IN

Input Voltage (Note 2)

µV

RMS

20

e

n

30

Output Voltage Noise

%/mA0.01 0.04∆V

LDR

Load Regulation

mA160 390I

LIM

Current Limit

I

OUT

= 1mA

85 180

I

OUT

= 50mA

Ground Pin Current µA

100

I

Q

1.1

165

UNITSMIN TYP MAXSYMBOLPARAMETER

Dropout Voltage (Note 2) mV

55 120

30 150

TA= -40°C to +85°C

CBP= 0.1µF,
C

OUT

= 1µF, no load

µs

300

Shutdown Exit Delay
(Note 3)

VIN= (V

OUT

+ 0.1V) to 6.5V, I

OUT

= 1mA %/V-0.15 0 0.15∆V

LNR

Line Regulation

I

OUT

= 0mA to 120mA

%

-3 2

Output Voltage Accuracy

SHUTDOWN

MAX8867/MAX8868

Low-Noise, Low-Dropout,

150mA Linear Regulators in SOT23

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VIN= V

OUT(NOMINAL)

+ 0.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

Note 1: Limits are 100% production tested at T

A

= +25°C. Limits over the operating temperature range are guaranteed through

correlation using Statistical Quality Control (SQC) Methods.

Note 2: The dropout voltage is defined as V

IN

- V

OUT

, when V

OUT

is 100mV below the value of V

OUT

for VIN= V

OUT

+ 0.5V.

Note 3: Time needed for V

OUT

to reach 95% of final value.

CONDITIONS

°C155T

SHDN

Thermal Shutdown
Temperature

UNITSMIN TYP MAXSYMBOLPARAMETER

°C15∆T

SHDN

Thermal Shutdown
Hysteresis

__________________________________________Typical Operating Characteristics

(VIN= V

OUT(NOMINAL)

+ 0.5V, CIN= 1µF, C

OUT

= 1µF, CBP= 0.01µF, TA= +25°C, unless otherwise noted.)

2.40

2.45

2.50

2.55

2.60

0 50 100 150

MAX886_EUK25

OUTPUT VOLTAGE vs. LOAD CURRENT

MAX8867/8-01

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

4.8

4.9

5.0

5.1

5.2

0 50 100 150

MAX886_EUK50

OUTPUT VOLTAGE vs. LOAD CURRENT

MAX8867/8-02

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

60

70
65

85
80
75

100

95
90

110
105

0 50 100 150

GROUND PIN CURRENT

vs. LOAD CURRENT

MAX8867/8-03

LOAD CURRENT (mA)

GROUND PIN CURRENT (µA)

MAX886_EUK50

MAX886_EUK25

THERMAL PROTECTION

0

20

60

40

80

100

120

0 21 3 54 6

MAX886_EUK25

GROUND PIN CURRENT vs. INPUT VOLTAGE

MAX8867/8-04

INPUT VOLTAGE (V)

GROUND PIN CURRENT (µA)

I

LOAD

= 50mA

NO LOAD

0

20

60

40

80

100

120

0 21 3 54 6

MAX886_EUK50

GROUND PIN CURRENT vs. INPUT VOLTAGE

MAX8867/8-05

INPUT VOLTAGE (V)

GROUND PIN CURRENT (µA)

I

LOAD

= 50mA

NO LOAD

0

1

3

2

4

5

6

0 21 3 54 6

OUTPUT VOLTAGE vs. INPUT VOLTAGE

MAX8867/8-06

INPUT VOLTAGE (V)

OUTPUT VOLTAGE (V)

MAX886_EUK50

MAX886_EUK25