EC49220|600mA CMOS Ultra LDO Voltage Regulator with EN

EC49220|600mA CMOS Ultra LDO Voltage Regulator with EN


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EC49220

600mA CMOS Ultra LDO Voltage Regulator with EN

 

 

DESCRIPTIONS

The​​ EC49220​​ series​​ of adjustable output ultra​​ low dropout linear regulators are designed​​ for​​ portable battery powered

applications, which​​ require​​ low power consumption and low dropout​​ voltage. Each​​ device contains a band​​ gap voltage

reference,​​ an​​ error​​ amplifier,​​ a​​ PMOS​​ power​​ transistor, and current limit and temperature limit​​ protection​​ circuits.

The​​ output​​ voltage​​ can​​ be​​ adjusted via the external resistor network, based on​​ the internal reference voltage of 0.8V

The EC49220 is designed to work with low cost​​ electrolytic and ceramic capacitors and requires a​​ minimum output capacitor of 1µF.

 

 

FEATURE

​​ ​​ Typical 150mV Dropout Voltage at 500mA.

​​ ​​ Fast Enable Turn-On Time of 20µs (Typ.)

​​ ​​ Excellent Line and Load Regulation.

​​ ​​ High Accuracy Output Voltage of 2%.

​​ ​​ Ultra-Low Ground Current at 78µA (Typ.)

​​ ​​ Disable Current Less than 1µA (Typ.)

​​ ​​ Thermal and Over-Current Protection.

​​ ​​ Short Circuit Protection

​​ ​​ Standard SOT23-5​​ Package.

 

 

APPLICATION

​​ ​​ USB removable devices

 ​​​​ MPEG4 devices

 ​​​​ Wireless LAN’s

 ​​​​ Hand-Held Instrumentation.

 ​​​​ Portable DVD players

 ​​​​ Digital camera

 

 

​​ ORDERING INFORMATION

 

 

​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ EC49220-XX ​​ ​​​​ XX​​ X

​​ Output Voltage:

 ​​ ​​ ​​ ​​ ​​​​ 18=1.8V

 ​​ ​​ ​​ ​​ ​​​​ 33=3.3V

 ​​ ​​ ​​ ​​ ​​​​ AJ=ADJ

R:Tape & Reel

 

 

B2:SOT23-5

 

 

Part Number

Package

Marking

Marking Information

EC49220XXB2R

SOT23-5

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 220XXX

1.​​ Adjustable output voltage

X means Production batch.

2.​​ Fixed output voltage 1.0~4.3V

X means Production batch.

 

 

PIN CONFIGURATION​​ 

 

 

 

 

 

 

 

 

 

 

Typical Application

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2. ADJ Vout Typical Application CircuitMinimum Cout 1uF

 

​​ 

 

 

 

 

 

 

 

 

 

 

 

 

Figure​​ 3.​​ Fix​​ Vout Typical Application CircuitMinimum Cout 1uF

 

 

 

Pin Description

 

NO.

Pin Name

Pin Function Description

1

ENABLE

Enable Pin

2

VIN

Input Voltage

3

VOUT

Output Voltage

4

ADJ

Adjust Pin

5

GND

Ground

 

Functional Block Diagram

 

 

 

 

 

 

 

 

 

 

 

 

Absolute ​​ Maximum ​​ Ratings(1)

 

Parameter

Symbol

Value

Units

Input Voltage

VIN

6.5

V

Enable Voltage Range

VEN

-0.3 to VIN

V

Output Voltage Range

VOUT

-0.3 to VIN

V

Power Dissipation

PD

SOT23-50.4

PSOP80.9

W

Thermal Resistance, Junction-to-Ambient

ΘJA

SOT23-5: 150

°C/W

PSOP830

ΘJC

SOT23-5: 33

PSOP820

Lead Temperature (Soldering, 5 sec.)

 

260

°C

Junction Temperature Range

TJ

-40 to +150

°C

Storage Temperature Range

TS

-60 to +150

°C

 

Test ​​ condition ​​ for ​​ all ​​ packages: ​​ Device ​​ mounted ​​ on ​​ FR-4 ​​ substrate ​​ PC ​​ board, ​​ 1oz ​​ copper, ​​ with ​​ minimum ​​ recommended ​​ pad ​​ layout.MIL-STD-202G ​​ 210F

 

 

Recommended ​​ Operating ​​ Conditions(2)

Parameter

Symbol

Value

Units

Supply Input Voltage Range

VIN

2~6

V

Junction Temperature Range

TJ

-40 to +125

°C

Ambient Temperature

TA

-40 to 85

°C

 

Electrical Characteristics

(VIN = ​​ (Vout+1.0V); CIN = 10μF; COUT = 10μF; IOUT = 10mA; TJ = 25°C; unless otherwise noted)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOUT

Output Voltage Accuracy

Iout=10mA

-2%

 

2%

V

VREF

ADJ Pin Voltage

EC49220  ADJ

-2%

0.8

2%

V

ΔVOUT/VOUT

Line Regulation

VIN = (VOUT + 0.7)V to 6V

--

0.05

0.2

%/V

ΔVOUT/VOUT

Load Regulation (5)

VIN = (VOUT + 0.7)V

IOUT = 10mA to 600mA

--

0.12

1

%

ΔVOUT/ΔT

Output Voltage

Temperature Coefficient

Note 4

--

0.1

--

mV/°C

VIN  VOUT

Dropout Voltage (6)

VOUT2.5V ,IOUT = 600mA

--

306

550

mV

VOUT2.5V ,IOUT = 600mA

--

240

350

TPROTECTION

Thermal Protection

Thermal Protect Threshold

--

150

--

°C

Hysterisys

 

30

 

IQ

Quiescent Current

VEN = VIN; IOUT = 0mA

--

78

100

μA

VEN = 0.4V; IOUT = 0mA

--

0.1

1

VTH(EN)

Enable Input Threshold

Voltage

Voltage Increasing, Output

Turns On, Logic High

1.6

--

--

V

Voltage Decreasing, Output

Turns Off, Logic Low

--

--

0.4

 

ILIMIT

Current Limit

 

1

1.7

--

A

Ishort

Short Circuit Current

VIN=Vout+1V; Vout< 0.4V

--

0.32

--

A

PSRR

Ripple Rejection

f =1KHz VIN=4.5V

Vp-p=0.5V, ILoad=50mA

 

53.6

 

dB

Note 1:​​ Exceeding the absolute maximum rating may damage the device.

Note 2:​​ The device is not guaranteed to function outside its operating rating.

Note 3:​​ The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX)

= (TJ(MAX) – TA)/ΘJA.  ​​​​ Exceeding the maximum allowable power dissipation will result in excessive die​​ temperature, ​​ and ​​ the ​​ regulator ​​ will ​​ go ​​ into ​​ thermal ​​ shutdown.See ​​ “Thermal ​​ Consideration” ​​ section​​ for details

Note​​ 4:​​ Output  ​​​​ voltage  ​​​​ temperature  ​​​​ coefficient  ​​​​ is  ​​​​ the  ​​​​ worst  ​​​​ case  ​​​​ voltage  ​​​​ change  ​​​​ divided  ​​​​ by  ​​​​ the  ​​​​ total

temperature range.

Note 5:​​ Regulation ​​ is ​​ measured ​​ at ​​ constant ​​ junction ​​ temperature ​​ using ​​ low ​​ duty ​​ cycle ​​ pulse ​​ testing.Parts​​ are tested for load regulation in the load range from 10mA to 600mA.  ​​​​ Changes in output voltage due​​ to heating effects are covered by the thermal regulation specification.

Note 6: ​​​​ Dropout ​​ voltage ​​ is ​​ defined ​​ as ​​ the ​​ input ​​ to ​​ output ​​ differential ​​ at ​​ which ​​ the ​​ output ​​ voltage ​​ drops ​​ 2%

below its nominal value measured at 1V differential.Input voltage above minimum Vin=2V.

 

 

Typical ​​ Performance ​​ Characteristics