Diodes PAM3112 User Manual

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Description

The PAM3112 regulator features low quiescent current (65µA Typ)

and excellent line/load regulation, making it ideal for battery powered

applications. The output voltage can be 1.2V or 1.3V. Space-saving

packages SOT23, TSOT25, SOT-89 and SC70 are attractive for

portable and handheld applications. It has both thermal shutdown and

a current limit features to prevent device failure under extreme

operating conditions. The device is stable with an output capacitance

of 2.2µF or greater.

Features

• Accuracy within ±2%

• Quiescent Current: 65µA Typ.

• Excellent Line/Load Regulation

• Guaranteed 300mA Output Current

• Fast Response

• Current Limiting

• Short Circuit Protection

• Low Temperature Coefficient

• Thermal Shutdown

• Space Saving Package: SOT23, TSOT25, SOT-89 and SC70

• Pb-Free Package

Applications

Pin Assignments

Top View

SOT23

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PAM3112

300mA CMOS LINEAR REGULATOR

Top View

TSOT25

• Cordless Phone

• Cellular Phone

• Bluetooth Earphone

• Digital Camera

• Portable Electronics

• WLAN

• MP3 Player

Typical Applications Circuit

PAM3112

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Pin Configuration and Description

Package

Type

SOT23

TSOT25 VIN GND EN BYP VOUT

SOT89-3

SC70-3L VIN VOUT GND —

SC70-4L EN GND VOUT VIN

SC70-5L VIN GND EN BYP VOUT

Pin Name Function

VIN Input

GND Ground

EN Chip Enable (active high)

BYP Bypass Pin, need a 10nF capacitor connect to GND

VOUT Output

1 2 3 4 5

VOUT GND VIN — —

GND VOUT VIN — —

GND VIN VOUT — —

VOUT GND VIN — —

Pin Number

Functional Block Diagram

PAM3112

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PAM3112

Absolute Maximum Ratings (@T

These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground.

Parameter Rating Unit

Input Voltage 6.0 V

Output Current

Output Pin Voltage

Lead Soldering Temperature 300, (5sec) °C

Maximum Junction Temperature 150 °C

Storage Temperature -65 to +150 °C

ESD Rating Class B —

Recommended Operating Conditions (@T

Parameter Rating Unit

Junction Temperature -40 to +125

Ambient Temperature -40 to +85

= +25°C, unless otherwise specified.)

A

P

/(VIN – VO)

D

GND -0.3 to V

+0.3V

IN

= +25°C, unless otherwise specified.)

A

—

V

°C

Thermal Information

Parameter Symbol Package Max Unit

SOT23/

Thermal Resistance (Junction to Case)

Thermal Resistance (Junction to Ambient)

Internal Power Dissipation (@TA = +25°C) PD

PAM3112

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TSOT25

SOT-89 45

SC70 TBD

SOT23/

TSOT25

SOT-89 160

SC70 300

SOT23/

TSOT25

SOT-89 550

SC70 300

130

250

400

°C/W

mW

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PAM3112

Electrical Characteristics (@T

Parameter Symbol Test Conditions Min Typ Max Units

Input Voltage

Output Voltage Accuracy

Output Current

Ground Current

Quiescent Current

Line Regulation LNR

Load Regulation LDR

Short Circuit Current

Temperature Coefficient

Over Temperature Shutdown OTS

Over Temperature Hysteresis OTH

Power Supply Ripple Rejection PSRR

Output Noise

EN Input High Threshold

EN Input Low Threshold

Shutdown Current

Notes: 1. Output current is limited by PD, maximum IO = 400mW/ (V

PAM3112

Document number: DSxxxxx Rev. 2 - 3

V

I

GND

I

V

I

= +25°C, VIN = 3V, CIN = 1µF, CO = 2.2µF, unless otherwise specified.)

A

IN

IO = 1mA

O

300 Note 1 mA

I

O

IO = 1mA to 300mA

I

IO = 0mA

Q

V

= 2.5V to 5.0V IO = 10mA

IN

I

= 1mA to 300mA

O

VO = 0V

SC

T

V

40 ppm/°C

C

I

= 1mA

O

I

= 1mA

O

I

= 100mA

O

= 10nF

C

BYP

f = 10Hz to 100kHz, C

N

VIN = 2.5V to 5V

IN

VIN = 2.5V to 5V

IL

VEN = 0V

SD

IN(MAX)

BYP

– V

= 10nF

O

f = 100Hz 70

f = 1kHz 65

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2.5 5.5 V

-2 +2 %

70 90 µA

65 90 µA

-0.15 0.10 0.15 %/V

30 60 mV

130 mA

150 °C

30 °C

dB

50

µV

RMS

1.5 V

0.3 V

0.01 1 µA

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Typical Performance Characteristics (@T

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PAM3112

= +25°C, CIN = 1µF, CO = 2.2µF, VO = 1.2V, unless otherwise specified.)

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PAM3112

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Typical Performance Characteristics (cont.) (@T

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PAM3112

= +25°C, CIN = 1µF, CO = 2.2µF, VO = 1.2V, unless otherwise specified.)

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PAM3112

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