Diodes AP2125 User Manual

Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

General Description

The AP2125 series are 300mA, positive voltage regulator ICs fabricated by CMOS process.

Each of these ICs is equipped with a voltage reference, an error amplifier, a resistor network for setting output voltage, a chip enable circuit, a current limit circuit and OTSD (over temperature shut down) circuit to prevent the IC from over current and over temperature.

The AP2125 series have features of high ripple rejection, low dropout voltage, low noise, high output voltage accuracy and low current consumption which make them ideal for use in various battery-powered apparatus.

The AP2125 have 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.15V and 4.2V fixed voltage versions.

These ICs are available in tiny SC-70-5 and SC-82 packages as well as industry standard SOT-23-3 and SOT-23-5 packages.

Features

· Excellent Ripple Rejection: 70dB Typical (1.8V

Version)

· Low Dropout Voltage: 65mV (I

3.3V Version)

· Low Standby Current: 0.01µA Typical

· Low Quiescent Current: 60µA Typical

· Extremely Low Noise: 50µVrms Typical

· Maximum Output Current: 300mA (Min.)

· High Output Voltage Accuracy:

· Compatible with Low ESR Ceramic Capacitor

· Excellent Line/Load Regulation

±2%

OUT

=100mA,

Applications

· CDMA/GSM Cellular Handsets

· Battery-powered Equipments

· Laptops, Palmtops, Notebook Computers

· Hand-held Instruments

· PCMCIA Cards

· Portable Information Appliances

SOT-23-3 SOT-23-5 SC-70-5

Figure 1. Package Types of AP2125

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SC-82

Data Sheet

3

2

1

V

IN

GND

V

OUT

1

2

34

5 V

OUT

NC

CE

GND

V

IN

1

2

3

4

CE

GND V

OUT

V

IN

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Pin Configuration

N Package

(SOT-23-3)

K/KS Package

KC Package

(SOT-23-5/SC-70-5)

Figure 2. Pin Configuration of AP2125 (Top View)

(SC-82)

Pin Description

Pin Number

Pin Name Function

SOT-23-3 SOT-23-5/

SC-70-5

314V

1 2 2 GND Ground

3 1 CE Active high enable input pin. Logic high=enable, logic low=shutdown

4 NC No connection

253V

SC-82

IN

OUT

Input voltage

Regulated output voltage

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Data Sheet

V

REF

Shutdown

and

Logic Control

MOS Driver

Current Limit

and

Thermal Protection

V

REF

Shutdown

and

Logic Control

MOS Driver

Current Limit

and

Thermal

Protection

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Functional Block Diagram

3 (1)

3

V

IN

CE

1 (4)

V

IN

SOT-23-3

2

V

OUT

1

GND

A(B) A SOT-23-5/SC-70-5

B SC-82

Figure 3. Functional Block Diagram of AP2125

5 (3)

2 (2)

V

OUT

GND

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Ordering Information

AP2125 -

Package

SOT-23-3

SOT-23-5

SC-70-5

SC-82

Circuit Type

Package

N: SOT-23-3 K: SOT-23-5 KS: SC-70-5 KC: SC-82

Temperature

Range

o

-40 to 85

C

o

C

o

C

o

C

E1: Lead Free G1: Green

TR: Tape and Reel

1.8: Fixed Output 1.8V

2.5: Fixed Output 2.5V

2.8: Fixed Output 2.8V

3.0: Fixed Output 3.0V

3.3: Fixed Output 3.3V

4.15: Fixed Output 4.15V

4.2: Fixed Output 4.2V

Part Number Marking ID

Lead Free Green Lead Free Green

AP2125N-1.8TRE1 AP2125N-1.8TRG1 EJ2 GJ2 Tape & Reel

AP2125N-2.5TRE1 AP2125N-2.5TRG1 EJ4 GJ4 Tape & Reel

AP2125N-2.8TRE1 AP2125N-2.8TRG1 EJ5 GJ5 Tape & Reel

AP2125N-3.0TRE1 AP2125N-3.0TRG1 EJ6 GJ6 Tape & Reel

AP2125N-3.3TRE1 AP2125N-3.3TRG1 EJ7 GJ7 Tape & Reel

AP2125N-4.2TRE1 AP2125N-4.2TRG1 EJ3 GJ3 Tape & Reel

AP2125K-1.8TRE1 AP2125K-1.8TRG1 ECB GCB Tape & Reel

AP2125K-2.5TRE1 AP2125K-2.5TRG1 ECD GCD Tape & Reel

AP2125K-2.8TRE1 AP2125K-2.8TRG1 ECE GCE Tape & Reel

AP2125K-3.0TRE1 AP2125K-3.0TRG1 ECF GCF Tape & Reel

AP2125K-3.3TRE1 AP2125K-3.3TRG1 ECG GCG Tape & Reel

AP2125K-4.15TRG1 GCJ Tape & Reel

AP2125K-4.2TRE1 AP2125K-4.2TRG1 ECC GCC Tape & Reel

AP2125KS-1.8TRE1 AP2125KS-1.8TRG1 26 B6 Tape & Reel

AP2125KS-2.5TRE1 AP2125KS-2.5TRG1 35 C5 Tape & Reel

AP2125KS-2.8TRE1 AP2125KS-2.8TRG1 27 B7 Tape & Reel

AP2125KS-3.0TRE1 AP2125KS-3.0TRG1 36 C6 Tape & Reel

AP2125KS-3.3TRE1 AP2125KS-3.3TRG1 28 B8 Tape & Reel

AP2125KS-4.2TRE1 AP2125KS-4.2TRG1 34 C4 Tape & Reel

AP2125KC-1.8TRE1 AP2125KC-1.8TRG1 91 T1 Tape & Reel

AP2125KC-2.5TRE1 AP2125KC-2.5TRG1 96 T6 Tape & Reel

AP2125KC-2.8TRE1 AP2125KC-2.8TRG1 92 T2 Tape & Reel

AP2125KC-3.0TRE1 AP2125KC-3.0TRG1 97 T7 Tape & Reel

AP2125KC-3.3TRE1 AP2125KC-3.3TRG1 93 T3 Tape & Reel

AP2125KC-4.2TRE1 AP2125KC-4.2TRG1 95 T5 Tape & Reel

Packing Type

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages.

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Input Voltage V

Enable Input Voltage V

Output Current I

Junction Temperature T

Storage Temperature Range T

Lead Temperature (Soldering, 10sec) T

LEAD

IN

CE

OUT

J

STG

6.5 V

-0.3 to VIN+0.3 V

450 mA

150

-65 to 150

260

o

C

SOT-23-3 200

Thermal Resistance

θ

JA

SC-70-5 300

SOT-23-5 200

o

C/W

SC-82 300

ESD (Human Body Model) ESD 6000 V

ESD (Machine Model) ESD 400 V

Note 1: Stresses greater than 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 under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Input Voltage V

Operating Ambient Temperature Range T

IN

A

5

V

+0.5V 6 V

OUT

-40 85

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C

Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Electrical Characteristics AP2125-1.8 Electrical Characteristics

(VIN=2.8V, TA=25oC, CIN=1μF, C

Parameter Symbol Conditions Min Typ Max Unit

Output Voltage

Input Voltage V

Maximum Output Current I

Load Regulation

Line Regulation

Dropout Voltage

OUT

OUT(MAX)

V

=1μF,

V

OUT

IN

RLOAD

RLINE

V

DROP

Bold

typeface applies over -40oC≤TJ≤

VIN=2.8V

1mA≤I

VIN-V

OUT

≤30mA

=1V, V

VIN=2.8V

OUT

≤300mA

1mA≤I

2.8V≤VIN≤6V

=30mA

I

OUT

I

=10mA 10 12

OUT

=100mA 100 120

I

OUT

=300mA 300 360

I

OUT

85oC,

unless otherwise specified.)

1.764 1.8 1.836 V

6V

=1.76V 300 360 mA

OUT

615mV

115mV

mV

Quiescent Current

Standby Current

Power Supply Rejection Ratio

Output Voltage Temperature Coefficient

(ΔV

OUT/VOUT

Short Current Limit I

RMS Output Noise

I

STD

PSRR

SHORT

V

NOISE

Q

VIN=2.8V, I

VIN=2.8V

V

Ripple 0.5Vp-p V

)/ΔTI

OUT

V

10Hz ≤f≤100kHz

in OFF mode

CE

OUT

=0mA

60 90

0.01 1.0

f=100Hz 70 dB

=2.8V

IN

=30mA

=0V 50 mA

OUT

f=1KHz 70 dB

±100

50

μA

ppm/

μVrm s

CE "High" Voltage CE input voltage "High" 1.5 V

CE "Low" Voltage CE input voltage "Low" 0.4 V

Thermal Shutdown 160

Thermal Shutdown Hysteresis

25

o

C

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Electrical Characteristics (Continued) AP2125-2.5 Electrical Characteristics

(VIN=3.5V, TA=25oC, CIN=1μF, C

Parameter Symbol Conditions Min Typ Max Unit

Output Voltage

Input Voltage V

Maximum Output Current I

Load Regulation

Line Regulation

Dropout Voltage

OUT

OUT(MAX)

V

=1μF,

V

OUT

IN

RLOAD

RLINE

V

DROP

Bold

typeface applies over -40oC≤TJ≤

VIN=3.5V

1mA≤I

VIN-V

OUT

≤30mA

=1V, V

VIN=3.5V

OUT

≤300mA

1mA≤I

3.5V≤VIN≤6V

=30mA

I

OUT

I

=10mA 6.5 10

OUT

=100mA 65 100

I

OUT

=300mA 200 300

I

OUT

85oC,

unless otherwise specified.)

2.45 2.5 2.55 V

6V

=2.45V 300 360 mA

OUT

10 15 mV

115mV

mV

Quiescent Current

Standby Current

Power Supply Rejection Ratio

Output Voltage Temperature Coefficient

(ΔV

OUT/VOUT

Short Current Limit I

RMS Output Noise

I

STD

PSRR

SHORT

V

NOISE

Q

VIN=3.5V, I

VIN=3.5V

V

Ripple 0.5Vp-p V

)/ΔTI

OUT

V

10Hz ≤f≤100kHz

in OFF mode

CE

OUT

=0mA

60 90

0.01 1.0

f=100Hz 65 dB

=3.5V

IN

=30mA

=0V 50 mA

OUT

f=1KHz 65 dB

±100

50

μA

ppm/

μVrm s

CE "High" Voltage CE input voltage "High" 1.5 V

CE "Low" Voltage CE input voltage "Low" 0.4 V

Thermal Shutdown 160

Thermal Shutdown Hysteresis

25

o

C

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Electrical Characteristics (Continued) AP2125-2.8 Electrical Characteristics

(VIN=3.8V, TA=25oC, CIN=1μF, C

Parameter Symbol Conditions Min Typ Max Unit

Output Voltage

Input Voltage V

Maximum Output Current I

Load Regulation

Line Regulation

Dropout Voltage

OUT

OUT(MAX)

V

=1μF,

V

OUT

IN

RLOAD

RLINE

V

DROP

Bold

typeface applies over -40oC≤TJ≤

VIN=3.8V

1mA≤I

VIN-V

OUT

≤30mA

=1V, V

VIN=3.8V

OUT

≤300mA

1mA≤I

3.8V≤VIN≤6V

=30mA

I

OUT

I

=10mA 6.5 10

OUT

=100mA 65 100

I

OUT

=300mA 200 300

I

OUT

85oC,

unless otherwise specified.)

2.744 2.8 2.856 V

6V

=2.74V 300 360 mA

OUT

11 15 m V

115mV

mV

Quiescent Current

Standby Current

Power Supply Rejection Ratio

Output Voltage Temperature Coefficient

(ΔV

OUT/VOUT

Short Current Limit I

RMS Output Noise

I

STD

PSRR

SHORT

V

NOISE

Q

VIN=3.8V, I

VIN=3.8V

V

Ripple 0.5Vp-p V

)/ΔTI

OUT

V

10Hz ≤f≤100kHz

in OFF mode

CE

OUT

=0mA

60 90

0.01 1.0

f=100Hz 65 dB

=3.8V

IN

=30mA

=0V 50 mA

OUT

f=1KHz 65 dB

±100

50

μA

ppm/

μVrm s

CE "High" Voltage CE input voltage "High" 1.5 V

CE "Low" Voltage CE input voltage "Low" 0.4 V

Thermal Shutdown 160

Thermal Shutdown Hysteresis

25

o

C

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Data Sheet

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Electrical Characteristics (Continued) AP2125-3.0 Electrical Characteristics

(VIN=4.0V, TA=25oC, CIN=1μF, C

Parameter Symbol Conditions Min Typ Max Unit

Output Voltage

Input Voltage V

Maximum Output Current I

Load Regulation

Line Regulation

Dropout Voltage

OUT

OUT(MAX)

V

=1μF,

V

OUT

IN

RLOAD

RLINE

V

DROP

Bold

typeface applies over -40oC≤TJ≤

VIN=4.0V

1mA≤I

VIN-V

OUT

≤30mA

=1V, V

VIN=4.0V

OUT

≤300mA

1mA≤I

4.0V≤VIN≤6V

=30mA

I

OUT

I

=10mA 6.5 10

OUT

=100mA 65 100

I

OUT

=300mA 200 300

I

OUT

85oC,

unless otherwise specified.)

2.94 3.0 3.06 V

6V

=2.94V 300 360 mA

OUT

12 15 mV

115mV

mV

Quiescent Current

Standby Current

Power Supply Rejection Ratio

Output Voltage Temperature Coefficient

(ΔV

OUT/VOUT

Short Current Limit I

RMS Output Noise

I

STD

PSRR

SHORT

V

NOISE

Q

VIN=4.0V, I

VIN=4.0V

V

Ripple 0.5Vp-p V

)/ΔTI

OUT

V

10Hz ≤f≤100kHz

in OFF mode

CE

OUT

=0mA

60 90

0.01 1.0

f=100Hz 65 dB

=4.0V

IN

=30mA

=0V 50 mA

OUT

f=1KHz 65 dB

±100

50

μA

ppm/

μVrm s

CE "High" Voltage CE input voltage "High" 1.5 V

CE "Low" Voltage CE input voltage "Low" 0.4 V

Thermal Shutdown 160

Thermal Shutdown Hysteresis

25

o

C

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