APE8839AMP-C - Advanced Power Electronics Corp. USA

Advanced Power

Electronics Corp.

DUAL 600mA LDO REGULATOR WITH ENABLE FUNCTION

FEATURES DESCRIPTION

Input Voltage Range :

Channel 1 : 3.4V to 5.5V

Channel 2 : 2.8V to 5.5V

Low Quiescent Current is 50uA/per channel (typ.)

Tight Load and Line Regulation

Fast Transient Response

Current Limit and Thermal Shutdown Protection

Only low-ESR Ceramic Capacitors Required

for Stability

Available in the ESOP-8 Pb-Free Package

Data and specifications subject to change without notice

201012073LG

APE8839A

TYPICAL APPLICATIO

PACKAGE ORDERING INFORMATIO

The APE8839A is an efficient, precise dual-channel CMOS

LDO regulator optimized for ultra-low-quiescent applications.

Regulators output1 and output2 are capable of sourcing 600mA

of output current. The regulators are stable with output

capacitors as low as 1μF, including current limit, thermal

shutdown protection, fast transient response, low dropout

voltage, high output accuracy, current limiting protection, and

high ripple rejection ratio. The APE8839A contains internal pull

high enable function that allows the output of each regulator to

be turned off independently. The APE8839A regulators are

available in used SO-8 with Exposed Pad package.

VIN1

VOUT1

GND

VIN1

APE8839A

1uF

OUT1

VVOUT2

VIN2

EN1

VIN2

1uF

OUT2V

6,7

EN2

OFF

APE8839AX - X

MP : ESOP-8

Output voltage

Package

A:V

OUT1=3.3V, VOUT2=1.8V

B:V

OUT1=3.3V, VOUT2=1.5V

C:V

OUT1=3.3V, VOUT2=1.2V

(Top View )

VOUT1

VOUT2

ESOP-8

GND

EN2

VIN1

GND

VIN2

EN1

GND

Advanced Power

Electronics Corp. APE8839

ABSOLUTE MAXIMUM RATINGS

VIN1, VIN2 Pin Voltage (VIN1,2) ----------------------------- 6V

Output Voltage (VOUT1/VOUT2) ----------------------------

GND - 0.3 to VIN + 0.3V

Enable Voltage (VEN1/VEN2) ------------------------------

GND - 0.3 to VIN + 0.3V

Power Dissipation (PD) ------------------------------------ Internally Limited

Storage Temperature Range (TST) ---------------------

-65°C To 150°C

Operating Junction Temperature Range (TOPJ) -----

-40°C To + 125°C

Junction Temperature (TJ) -------------------------------

-40°C To + 150°C

15°C/W

45°C/W

Note: Rthja is measured with the PCB copper area of approximately 1 in2(Multi-layer). That need connect to exposed pad.

ELECTRICAL SPECIFICATIONS

( VIN1 = VIN2 = 5V, TA=25oC (unless otherwise noted))

Parameter SYM TEST CONDITION MIN TYP MAX UNITS

VIN1 IOUT1=30mA 3.4 - 5.5

VIN2 IOUT2=30mA 2.8 - 5.5

VEN1/2H 2.0 - -

VEN1/2L - - 0.8

EN Pull-high Resistance REN1/2 VIN1 = VIN2 = 5V 1.25 2.6 5 MΩ

Shutdown Current ISD IOUT1,2 =0mA, VIN=5V, VEN1,2=0V -48

Temperature Shutdown TSD1,2 - 150 - °C

Temperature Shutdown Hysterisis TSDR1,2 -40- °C

Regulator1

Output Voltage Accuracy VOUT1 IOUT1=30mA 3.234 3.3 3.366 V

Output Voltage Temperature stability IOUT1=10mA (Note4) - 1 - %

Dropout Voltage VDROP1 IOUT1=600mA, VOUT1=VOUT1-2% - 300 500 mV

Quiescent Current IQ1 IOUT1 =0mA, VIN1=5V - 50 80 uA

Line Regulation VLine1 VIN1 = 4V to 5.5V, IOUT1 = 30mA - 0.1 0.2 %/V

Load Regulation ∆VLOAD IOUT1 =1m~600mA -1040

Current Limit ILIMIT1 VIN1 = 5.0V 700 - - mA

Short Circuit Current IShort1 VOUT1<0.25 x VOUT1 - 500 - mA

Ripple Rejection PSRR1 IOUT1 =30mA, F=100Hz - -60 - dB

Regulator2

IOUT2=30mA (APE8839AMP-A) 1.764 1.8 1.836

IOUT2=30mA (APE8839AMP-B) 1.470 1.5 1.530

IOUT2=30mA (APE8839AMP-C) 1.176 1.2 1.224

Output Voltage Temperature stability IOUT2=10mA - 1 - %

VOUT=1.2V - 1300 1600

VOUT=1.5V - 1000 1300

VOUT=1.8V - 700 1000

Quiescent Current IQ2 IOUT2 =0mA, VIN2=5V - 50 80 uA

Line Regulation VLine2 VIN2 = 2.8V to 5.5V, IOUT2 = 30mA - 0.1 0.2 %/V

Load Regulation (Note3) ∆VLOAD IOUT2 =1m~600mA -1030

Current Limit (Note2) ILIMIT2 VIN2 = 5.0V 700 - - mA

Short Circuit Current IShort2 VOUT2<0.25 x VOUT2 - 500 - mA

Ripple Rejection PSRR2 IOUT2 =30mA, F=100Hz - -60 - dB

Note1: The device is not guaranteed to function outside its operating conditions.

Note2: Current limit is measured at constant junction temperature by using pulsed testing with a low ON time.

Note3: Regulation is measured at constant junction temperature by using pulsed testing with a low ON time.

Note4: Guaranteed by design.

Enable Input Threshold Each channel V

Output Voltage Accuracy

VDROP2 mV

Dropout Voltage

VOUT2

Input Voltage (Note1) V

Thermal Resistance from Junction to case (Rthjc)

Thermal Resistance from Junction to ambient (R thja)Note

IOUT2=600mA,

VOUT2=VOUT2-2%

Advanced Power

Electronics Corp. APE8839

PIN DESCRIPTIONS

PIN SYMBOL PIN DESCRIPTION

GND Common Ground

EN1 Channel 1 Shutdown Control Pin, the pin is internal pull high.

EN2 Channel 2 Shutdown Control Pin, the pin is internal pull high.

VOUT1 Channel1 Output Voltage

VOUT2 Channel2 Output Voltage

VIN1 Channel1 input Voltage

VIN2 Channel2 input Voltage

BLOCK DIAGRAM

FUNCTION DESCRIPTIONS

Enable Function

The APE8839A is a highly accurate, dual, low noise, CMOS LDO voltage

regulators with enable function. The output voltage for each regulator is set

independently by fuse trimming. As illustrated in function block diagram, it consists of

a reference, error amplifier, a P-channel pass transistor, an ON/OFF control logic and

an internal feedback voltage divider. The band gap reference is connected to the error

amplifier, which compares the reference with the feedback voltage and amplifies the

voltage difference. If the feedback voltage is lower than the reference voltage, the

pass- transistor gate is pulled lower, which allows more current to pass to the VOUT

pin and increases the output voltage. If the feedback voltage is too high, the pass

transistor gate is pulled up to decrease the output voltage. The output voltage is feed

back through an internal resistive divider connected to VOUT pin. Additional blocks

include an output current limiter, thermal sensor, and shutdown logic.

EN1 and EN2 pin start and stop the corresponding outputs independently. Those

pins are internal pull high. When the EN pin is switched to the power off level, the

operation of all internal circuit stops, the build-in P-channel MOSFET output transistor

between pins VIN and VOUT is switched off, allowing current consumption to be

drastically reduced.

Current

Limit1

VIN2

VOUT1

GND

Error

Amp

Bandgap

Thermal

Shutdown

Enable1

EN1

Current

Limit2

Error

Amp Enable2

EN2

VOUT2

VIN1

For senstitive applications, due to the high internal pull-high resistance value, we

recommend add the external pull-high resistor to reduce any external influence, such

as the side effect brought by high humidity environment.

Advanced Power

Electronics Corp. APE8839

Dropout Voltage

Current Limit

Thermal Shutdown Protection

Application Information

Input Capacitor

An input capacitance of 1μF is required between input pin and ground directly

(the amount of the capacitance may be increased without limit). The input capacitor

must be located less than 1cm from the device to assure input stability. A lower ESR

capacitor allows the use of less capacitance, while higher ESR type (like aluminum

electrolytic) requires more capacitance. Capacitor types (aluminum, ceramic and

tantalum) can be mixed in parallel, but the total equivalent input capacitance/ ESR

must be defined as above to stable operation. There are no requirements for the ESR

on the input capacitor, but tolerance and temperature coefficient must be considered

when selecting the capacitor to ensure the capacitance will be 1μF over the entire

operating temperature range.

Like any low-dropout regulator, the APE8839A requires input and output

decoupling capacitors. The device is specifically designed for portable applications

requiring minimum board space and smallest components. These capacitors must be

correctly selected for good performance (see Capacitor Characteristics Section).

Please note that linear regulators with a low dropout voltage have high internal loop

gains which require care in guarding against oscillation caused by insufficient

decoupling capacitance.

Thermal Shutdown protection limits total power dissipation of APE8839A. When

the junction temperature exceeds TJ = +150°C, a thermal sensor turns off the pass

transistor, allowing the IC to cool down. The thermal sensor turns the pass transistor

on again after the junction temperature cools down by 25°C, resulting in a pulsed

output during continuous thermal shutdown conditions.

Thermal shutdown protection is designed to protect the APE8839A in the event of

fault conditions. For continuous operation, the absolute maximum operating junction

temperature rating of TJ = +125°C should not be exceeded.

Each channel of APE8839A includes a fold back current limiter. It monitors and

controls the pass transistor’s gate voltage, estimates the output current, and limits the

output current minimum 700mA.

A regulator’s minimum input-output voltage differential, or dropout voltage,

determines the lowest usable supply voltage. The APE8839A use a P- channel

MOSFET pass transistor, its dropout voltage is function of drain-to-source on-

resistance RDS (ON) multiplied by the load current.

VDROPOUT = VIN-VOUT = RDS(ON) x IOUT

Advanced Power

Electronics Corp. APE8839A

Output Capacitor

Thermal Considerations

The APE8839A series can deliver a current of up to 600mA/channel over the full

operating junction temperature range. However, the maximum output current must be

debated at higher ambient temperature to ensure the junction temperature does not

exceed 125°C. With all possible conditions, the junction temperature must be within

the range specified under operating conditions. Power dissipation can be calculated

based on the output current and the voltage drop across regulator.

PD = (VIN - VOUT) IOUT + VIN x IQ

The final operating junction temperature for any set of conditions can be estimated

by the following thermal equation:

PD (MAX) = (TJ (MAX) - TA) / RthJA

Where TJ (MAX) is the maximum junction temperature of the die (125° C) and TA is

the maximum ambient temperature. The junction to ambient thermal resistance (RthJA)

ESOP-8 package at recommended minimum footprint is 45°C/W that is connect 1 in2

PCB copper area to exposed pad.

The APE8839A is designed specifically to work with very small ceramic output

capacitors. A ceramic capacitor (temperature characteristics X7R, X5R) in 1μF is

suitable for the APE8839A application. The recommended minimum capacitance for

the device is 1μF, X5R or X7R dielectric ceramic, between VOUT and GND for

stability, but it may be increased without limit. Higher capacitance values help to

improve transient. The output capacitor's ESR is critical because it forms a zero to

provide phase lead which is required for loop stability.

Advanced Power

Electronics Corp. APE8839A

TYPICAL PERFORMANCE CHARACTERISTICS

200

400

600

800

1000

0 0.1 0.2 0.3 0.4 0.5 0.6

IOUT1/2 (A)

Dropout Voltage (mV)

Dropout Voltage

APE8839AMP-A

Channel 1

Channel 2

3.20

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

3.40

3.544.555.5

VIN1 (V)

VOUT1 (V)

VIN VS VOUT1 (Channel 1)

APE8839AMP-A

IOUT1=30mA

3.20

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

3.40

0 0.1 0.2 0.3 0.4 0.5 0.6

IOUT1 (A)

VOUT1 (V)

IOUT VS VOUT1 (Channel 1)

APE8839AMP-A

VIN1=5V

3 3.5 4 4.5 5 5.5

VIN1/2 (V)

Quiescent Current (uA)

VIN VS Quiescent Current

APE8839AMP-A

No Load

Channel 1

Channel 2

1.70

1.72

1.74

1.76

1.78

1.80

1.82

1.84

1.86

1.88

1.90

3 3.5 4 4.5 5 5.5

VIN2 (V)

VOUT2 (V)

VIN VS VOUT2 (Channel 2)

APE8839AMP-A

IOUT1=30mA

1.70

1.72

1.74

1.76

1.78

1.80

1.82

1.84

1.86

1.88

1.90

0 0.1 0.2 0.3 0.4 0.5 0.6

IOUT2 (A)

VOUT2 (V)

IOUT VS VOUT2 (Channel 2)

APE8839AMP-A

VIN2=5V

Advanced Power

Electronics Corp. APE8839A

TYPICAL PERFORMANCE CHARACTERISTICS

3.10

3.15

3.20

3.25

3.30

3.35

3.40

3.45

3.50

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃

Temperature

VOUT 1 (V )

Temperature VS VOUT1 (Channel1)

APE8839AMP-A

VIN1=5V

IOUT1=10mA

1.60

1.65

1.70

1.75

1.80

1.85

1.90

1.95

2.00

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃

Temperature

VOUT2 (V)

Temperature VS VOUT2 (Channel2)

APE8839AMP-A

VIN1=5V

IOUT2=10mA

200

400

600

800

1000

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃

Temperature

Dropout Voltage (mV)

APE8839AMP-A

IOUT1=600mA

IOUT2=600mA

Temperature VS Dropout Voltage

Channel1

Channel2

Advanced Power

Electronics Corp. APE8839A

TYPICAL PERFORMANCE CHARACTERISTICS

Power ON Test (Channel1) Power ON Test (Channel2)

Enable –ON Test (Channel 1) Enable –ON Test (Channel 2)

Load Transient (Channel 1) Load Transient (Channel 2)

Advanced Power

Electronics Corp. APE8839A

MARKING INFORMATION

ESOP-8

Part Numbe

Package Code

8839AMP-&

YWWSSS

Output Voltage

Date Code (YWWSSS)

Y：Last Digit Of The Year

WW：Week

SSS：Sequence