Diodes AP7332 User Manual

AP7332

DUAL 300mA LOW QUIESCENT CURRENT FAST

TRANSIENT LOW DROPOUT LINEAR REGULATOR

Description

The AP7332 is 300mA, dual fixed output voltage, lo w dropout linear regulator. The AP7332 includes the pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry which protect the IC from damage in fault conditions. The AP7332 has two enable pins (EN1 and EN2) to independently turn the respective channel on when a logic high level is applied. The characteristics of low dropout voltage and low quiescent current make it suitable for low power applications. The typical quiescent current is approximately 60μA. This device is available with fixed output options of

1.0V/1.0V, 1.0V/3.3V, 1.2V/1.8V, 1.2V/3.3V, 1.5V/2.8V,

1.5V/3.0V, 1.5V/3.3V, 1.8V/2.7V, 1.8V/2.8V, 1.8V/3.0V,

1.8V/3.3V, 2.5V/3.0V, 2.8V/3.3V and 3.3V/3.3V. For other output options please contact our local sales representative directly or through our distributor located in

NEW PRODUCT

your area.

The AP7332 is available in SOT26 and DFN2018-6 packages.

Pin Assignments

(Top View)

EN2

1

2

3

OUT2

GND

(Top View)

1

IN

2

EN1

EN2

3

SOT26

6

OUT1

5

IN

4

EN1

6

OUT1

OUT2

5

4

GND

Features

• 300mA Low Dropout Regulator with EN

• Very low IQ: 60µA

• Wide input voltage range: 2V to 6V

• Fixed output options: 1.0V to 3.3V

• High PSRR: 65dB at 1kHz

• Fast start-up time: 60µs

• Stable with low ESR, 1µF ceramic output capacitor

• Excellent Load/Line Transient Response

• Low dropout: 300mV at 300mA

• Current limit protection

• Short circuit protection

• Thermal shutdown protection

• Ambient temperature range: -40ºC to 85°C

• SOT26 and DFN2018-6: Available in “Green” Molding Compound (No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

Note: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html.

Applications

• Cellular Phones

• Smart Phones, PDAs

• MP3/MP4

• Bluetooth head set

• Low power application

DFN2018-6

AP7332

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Typical Application Circuit

V

IN

AP7332

DUAL 300mA LOW QUIESCENT CURRENT FAST

TRANSIENT LOW DROPOUT LINEAR REGULATOR

V

VIN

VOUT1

OUT1

Pin Descriptions

Pin Name

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OUT2 1 5 Voltage output 2. Bypass to ground through 1µF ceramic capacitor

GND 2 4 Ground

EN2 3 3 Enable input 2, active high EN1 4 2 Enable input 1, active high

IN 5 1 Voltage input. Bypass to ground through at least 1µF capacitor

OUT1 6 6 Voltage output 1. Bypass to ground through 1µF ceramic capacitor

1uF

OFF

Pin Number

SOT26 DFN2018-6

ON

EN1

EN2

VOUT2

GND

V

OUT2

1uF

Description

1uF

AP7332

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Functional Block Diagram

AP7332

DUAL 300mA LOW QUIESCENT CURRENT FAST

TRANSIENT LOW DROPOUT LINEAR REGULATOR

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IN

EN 1

EN 2

Thermal

Shutdown

Gate

Driver

Gate

Driver

OUT 1

Current Limit

and

Short Circuit

Bandgap

GND

Current Limit

and

Short Circuit

AP7332

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OUT 2

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AP7332

Absolute Maximum Ratings

Symbol Parameter Ratings Unit

ESD HBM Human Body Model ESD Protection 8 kV

ESD MM Machine Model ESD Protection 400 V

VIN Input Voltage 6.5 V

OUT, EN Voltage VIN + 0.3 V

Continuous Load Current Internal Limited TOP Operating Junction Temperature Range -40 ~ 125 °C TST Storage Temperature Range -65 ~150 °C

PD Power Dissipation (Note 3)

TJ Maximum Junction Temperature 150 °C

Recommended Operating Conditions

DUAL 300mA LOW QUIESCENT CURRENT FAST

TRANSIENT LOW DROPOUT LINEAR REGULATOR

SOT26 950 mW DFN2018-6 2200 mW

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Symbol Parameter Min Max Unit

V

IN

I

OUT

T

A

Notes: 2. Ratings apply to ambient temperature at 25°C.

3. The device maintains a stable, regulated output voltage without a load current.

Input voltage 2 6 V Output Current (Note 3) 0 300 mA Operating Ambient Temperature -40 85

°C

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AP7332

x

Electrical Characteristics

= 25oC, V

(T

A

Symbol Parameter Test Conditions Min Typ. Max Unit

V

REF

I

ADJ

V

OUT

ΔV

/ΔVIN/V

OUT

ΔV

OUT

V

Dropout

I

Q

I

SHDN

I

LEAK

tST

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PSRR

I

SHORT

I

LIMIT

V V I

EN

T

SHDN

T

HYS

θ

JA

Notes: 4. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value.

5. This specification is guaranteed by design.

6. Test condition for SOT26: Device mounted on FR-4 substrate PC board, with minimum recommended pad layout

7. Test condition for DFN2018-6: Device mounted on FR-4 2-layer board,2oz copper, with minimum recommended pad on top layer and 3 vias to bottom layer.

/V

IL IH

= V

IN

+1V, C

OUT

ADJ Reference Voltage (Adjustable version)

= 1uF, C

IN

OUT

= 1uF, V

ADJ Leakage (Adjustable version) 0.1 1 μA Output Voltage Accuracy

Line Regulation Load Regulation

OUT

Dropout Voltage (Note 4) Input Quiescent Current (2 channels) V

Input Shutdown Current VEN = 0V, I Input Leakage Current VEN = 0V, OUT grounded 0.1 1

Start-up Time

PSRR (Note 5)

Short-circuit Current

Current limit EN Input Logic Low Voltage VIN = V

EN Input Logic High Voltage VIN = V EN Input Current VIN = 0V or V Thermal shutdown threshold 165 Thermal shutdown hysteresis 30

Thermal Resistance Junction-to-Ambient

DUAL 300mA LOW QUIESCENT CURRENT FAST

TRANSIENT LOW DROPOUT LINEAR REGULATOR

= VIN , unless otherwise stated)

EN

= 0mA 0.8 V

I

OUT

= -40oC to 85oC,

T

A

I

= 10% of I

OUT

= (V

V

IN

V

EN

= (V

V

IN

I

OUT

V

OUT

V

OUT EN

V

EN

I

OUT

VIN = [V f = 1kHz, I

= V

V

IN

V

OUT

V

= V

IN

V

OUT/ROUT

+1V) to V

OUT

= VIN, I

OUT

+1V) to V

OUT

= 1mA to 300mA

< 2.5V, I ≥ 2.5V, I

= VIN, I

OUT

= 0V to 2.0V in 1μs,

= 300mA

+1V]VDC + 0.5V

OUT

= 50mA

OUT

to V

IN-Min

= 1/4 target V

to V

IN-Min

= 1A

to V

IN-Min

to V

IN-Min

IN-Max

OUT-Ma

,

IN-Max

= 1mA

,

IN-Max

= 300mA 350 600

OUT

= 300mA 250 400

OUT

= 0mA 60 80 μA

= 0mA 0.1 1

ppAC

,

IN-Max

OUT

,

IN-Max

0.4 V

IN-Max

1.4 V

IN-Max

-1 1 μA

SOT26 (Note 6) 140 DFN2018-6 (Note 7) 60

-2 2 %

0.01 0.20 %/V

-0.6 0.6 %

150 μs

,

60 65 dB

120 mA

400 600 mA

mV

μA μA

°C °C

o

C/W

AP7332

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Typical Performance Characteristics

AP7332

DUAL 300mA LOW QUIESCENT CURRENT FAST

TRANSIENT LOW DROPOUT LINEAR REGULATOR

NEW PRODUCT

=5V, No load

V

IN

C

IN=COUT1=COUT2

=1μF

Line Transient Response

V

=4.3V to 5.3V (1V/div)

IN

C

OUT1=COUT2

=1μF, Tr=Tf=2μs, Both I

Start-Up Time

=0 to 2V (2V/div)

V

EN

V

OUT2

V

OUT1

Time (40μs/div)

=3.3V (1V/div)

=1V (500mV/div)

=30mA

LOAD

V

=5V, Both I

IN

C

IN=COUT1=COUT2

LOAD

=1μF

Line Transient Response

V

=4.3V to 5.3V (1V/div)

IN

C

OUT1=COUT2

=1μF, Tr=Tf=2μs, Both I

Start-Up Time

=300mA

V

=0 to 2V (2V/div)

EN

V

OUT2

V

OUT1

Time (40μs/div)

=3.3V (1V/div)

=1V (500mV/div)

=100mA

LOAD

=1V (10mV/div)

V

OUT1

=3.3V (10mV/div)

V

OUT2

Time (100μs/div)

AP7332

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V

OUT1

V

OUT2

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=1V (10mV/div)

=3.3V (10mV/div)

Time (100μs/div)

August 2011