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:

​​ 11=1.0V

​​ 12=1.2V

​​ 13=1.3V

 ​​​​ 

 ​​​​ 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 Circuit(Minimum Cout 1uF)

 

​​ 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 3. Fix Vout Typical Application Circuit(Minimum 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

V

Enable Voltage Range

VEN

-0.3 to VIN

V

Output Voltage Range

VOUT

-0.3 to VIN

V

Power Dissipation

PD

SOT23-50.7

PSOP81.45

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

2.0V to 6.0V

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

 

61

 

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