E-CMOS EC49513A/L-33FG 300ma linear regulator with enable and fast discharge function Datasheet

EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Description
Features
The EC49513A/L is a 4-Low (Low dropout,
Low quiescent Current, Low noise, Low cost)
linear regulator with ON/OFF control and
EC49513L can discharge output capacitor charge
fast. The device operates in the input voltage
range from +2.2V to +7.0V and delivers 300mA
output current.
The high accuracy output voltage is preset at an
internally trimmed voltage 1.2V, 1.5V, 1.8V, 2.5V,
2.8V, 3.0V or 3.3V. Other output voltages can be
mask optioned from 1.2V to 5.0V with 100mV
increment, except the EC49513A/L-285 which
has 2.85V output voltage.
The EC49513A/L consists of a 1.0V
reference compares amplifier, a P-channel pass
transistor, and an enable/disable logic circuit.
Other features include soft start function, short
circuit protection, and thermal shutdown
protection.
The EC49513A/L is also compatible with
low ESR ceramic capacitors which give added
output stability. This stability can be maintained
even during load fluctuations due to the excellent
transient response of the chip. The EC49513A/L
devices are available in SOT23-5L、UFN-6 and
TSOT23-5 packages.
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E-CMOS Corp. (www.ecmos.com.tw)
Page 1 of 24
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EC49513A/L Without / With Fast Discharge
Operating Voltage Range:+2.2V to +7.0V
Output Voltages:+1.2V to +5.0V with 100mV
Maximum Output Current:300 mA
Dropout Voltage:120mV @ 100mA
Low Current Consumption 15μA (Typ.)
Shutdown Current:0.1μA (Typ.)
±2% Output Voltage Accuracy (special ±1% highly
accurate)
Low ESR Capacitor Compatible
High Ripple Rejection:70 dB
Output Current Limit Protection (450mA)
Short Circuit Protection (150mA)
Thermal Overload Shutdown Protection
Control Output ON/OFF Function
SOT23-5L、UFN-6 and TSOT23-5 packages.
Green (Halogen Free With Commercial Standard)
Application
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Battery-Powered Devices.
Personal Communication Devices.
Mobile Phones, Cordless Phone.
Portable Games.
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Portable AV equipment.
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2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Block Diagram
E-CMOS Corp. (www.ecmos.com.tw)
Page 2 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Pin Descriptions
Pin Assignment
SOT23-5L/TSOT23-5L
(Top View)
UFN-6
(Bottom View)
Pin#
Pin#
SOT23-5L/TSOT23-5L
UFN-6
Symbol
Function
1
1
VIN
Power Input.
2
5
GND
Ground Pin.
3
6
EN
Chip Enable Pin.
4
2,4
NC
No Connection.
5
3
VOUT
Voltage Output Pin.
Ordering Information
Package
SOT23-5L
Part Number
Information
EC49513A-XXXB2G
The XXX character represents Output Voltage. Example: 12=1.2V, 15=1.5V...
EC49513L-XXXB2G
UFN-6
EC49513A-XXXFG
EC49513L-XXXFG
TSOT23-5
EC49513A-XXXT2G
EC49513L-XXXT2G
E-CMOS Corp. (www.ecmos.com.tw)
Page 3 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Marking Information
Package
Part Number
Marking
EC49513A-XXXB2G
3AVXX
Marking Information
The 1st to 2nd character represents the VOUT Type. 3A: With Enable, 3L: With Enable and
Fast Discharge Function.
The 3rd character represents the Output Voltage code. Please refer the table for Output
SOT23-5L
Voltage Code information.
EC49513L-XXXB2G
3LVXX
The XX characters represents the Date Code
There are under-lines on 4th and 5th character for Green package.
There are no under lines on second lines of 1st and 2nd characters for Lead Free package.
EC49513A-XXXFG
3AV
XX
UFN-6
The 1st to 2nd character represents the VOUT Type. 3A: With Enable, 3L: With Enable and
Fast Discharge Function.
The 3rd character represents the Output Voltage code. Please refer the table for Output
Voltage Code information.
EC49513L-XXXFG
3LV
The XX characters represents the Date Code
XX
There are under-lines on 4th and 5th character for Green package.
There are no under lines on second lines of 1st and 2nd characters for Lead Free package.
The 1st to 2nd character represents the VOUT Type. 3A: With Enable, 3L: With Enable and
Fast Discharge Function.
EC49513A-XXXT2G
3AVXX
The 3rd character represents the Output Voltage code. Please refer the table for Output
Voltage Code information.
TSOT23-5
The XX characters represents the Date Code.
st
There is an under-line on 1 digit for SOT23-5 package.
EC49513L-XXXT2G
3LVXX
nd
There is an under-line on 2 digit for TSOT25 package
There are under-lines on 4th and 5th character for Green package.
There are no under lines on second lines of 1st and 2nd characters for Lead Free package.
E-CMOS Corp. (www.ecmos.com.tw)
Page 4 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Table1
Mark code vs. Output Voltage code of Products part
Part Number
Mark
EC49513A/L-12B2G
Part Number
Mark
EC49513A/L-28B2G
5
EC49513A/L-12FG
EC49513A/L-28FG
EC49513A/L-12T2G
EC49513A/L-28T2G
EC49513A/L-15B2G
EC49513A/L-285B2G
8
EC49513A/L-15FG
EC49513A/L-15T2G
EC49513A/L-285FG
Part Number
Mark
EC49513A/L-42B2G
K
EC49513A/L-42FG
S
EC49513A/L-42T2G
L
EC49513A/L-285T2G
EC49513A/L-18B2G
EC49513A/L-30B2G
A
EC49513A/L-18FG
EC49513A/L-18T2G
EC49513A/L-30FG
M
EC49513A/L-30T2G
EC49513A/L-25B2G
EC49513A/L-33B2G
G
EC49513A/L-25FG
EC49513A/L-25T2G
EC49513A/L-33FG
Q
EC49513A/L-33T2G
EC49513A/L-27B2G
EC49513A/L-36B2G
J
EC49513A/L-27FG
EC49513A/L-27T2G
EC49513A/L-36FG
V
EC49513A/L-36T2G
Absolute Maximum Ratings
Parameter
Symbol
Value
Units
Input Voltage VIN to GND
VIN
7.0
V
Output Current Limit, I(LIMIT)
IOUT
0.5
A
Junction Temperature
TJ
+155
°C
Thermal Resistance (SOT23-5L)
ΘJA
250
°C/W
Power Dissipation
SOT23-5L
UFN-6
PD
400
mW
500
Operating Ambient Temperature
TOPR
-40 to +125
°C
Storage Temperature
TSTG
-55 to +150
°C
—
+260
°C
Lead Temperature (Soldering, 10sec.)
Note:
*The power dissipation of values are based on the condition that junction temperature TJ and ambient temperature TA difference is
100℃
*Stresses beyond those listed under” absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and function operation of the device at these to any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability.
* The power dissipation of UFN-6 would be 500 mW normally with the 0.5X0.5 square inches cooper area connected to the bottom pad.
However, it could be up to 1000mW with larger cooper area.
E-CMOS Corp. (www.ecmos.com.tw)
Page 5 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Electrical Characteristics
(VIN=5V, TA=25℃, unless otherwise noted.)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
VIN
Input Voltage
—
2.2
—
7.0
V
VOUT
Output Voltage
VIN=VOUT+0.8V
-1%
-2%
VOUT
+1%
+2%
V
Output Current (see note *1)
VOUT +0.8V≦VIN≦7.0V, 2.2V≦VIN
300
—
—
mA
IOUT=300mA,2.8V≦VIN, 25°C≦TA≦80°C
—
550
650
IOUT=180mA,2.8V≦VIN
—
240
280
IOUT=150mA,2.8V≦VIN
—
160
180
VOUT +0.5V≦VIN≦7.0V, IOUT =1mA
—
0.2
0.3
—
—
0.2
VIN = VOUT +1V, 1mA≦IOUT≦100mA
—
0.01
0.02
VIN =5V, EN=5V, No Load
—
15
30
VIN =5V, EN=5V, IOUT =150mA,
—
30
60
IMAX
VDROP
∆VLINE
Dropout Voltage
Line Regulation
VOUT+0.15V≦VIN≦5.0V,IOUT 1mA,
VIN≧2.8V
∆VLOAD
Load Regulation
mV
%/V
%/mA
μA
IQ
Ground Pin Current
ISD
Shutdown Current
VIN = VOUT+1V, EN=0V, No Load
—
0.1
1.0
μA
VIH
EN Pin Input Voltage “H”
(See note *2, *4 )
2.0
—
—
V
VIL
EN Pin Input Voltage “L”
(See note *2 )
—
—
0.3
V
IEN
EN Pin Leakage Current
—
0.1
0.15
μA
ISC
Short Circuit Current
—
—
150
—
mA
IOUT =30mA, F=1KHz
—
70
—
IOUT =30mA, F=10KHz
—
65
—
PSRR
Ripple Rejection Rate
VIN =( VOUT+0.15V) to 5V, VEN>VIH
(See note *3 )
dB
eN
Output Noise
IOUT =100mA, F=1KHz, COUT=10μA
—
40
—
μV (rms)
TSD
Thermal Shutdown
Temperature
—
—
150
—
°C
THYS
Thermal Shutdown Hysteresis
—
—
20
—
°C
VEN=0V, (See note *3)
—
30
100
Ω
VOUT=3.3V to 0V, COUT=1μF
(See note *3)
—
70
100
μS
RDIS
TDIS
Discharge Resistor
Discharge Time
Note:
*1) Measured using a double sided board with 1”x2” square inches of copper area connected to the GND pins for “heat spreading”.
*2) EN pin input voltage must be always less than or equal to input voltage.
*3) It is for the EC49513L only.
*4)Corp.
EN Pin
with internal pull high resistor is about several
of KΩ for EC49513A only.
Page 6 hundreds
of 24
2010/10/29
E-CMOS
(www.ecmos.com.tw)
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics
(1) Output Voltage vs. Output Current
E-CMOS Corp. (www.ecmos.com.tw)
Page 7 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics
(1) Output Voltage vs. Output Current (Continued)
E-CMOS Corp. (www.ecmos.com.tw)
Page 8 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(2) Dropout Voltage vs. Output Current
E-CMOS Corp. (www.ecmos.com.tw)
Page 9 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(3) Supply Current vs. Input Voltage
E-CMOS Corp. (www.ecmos.com.tw)
Page 10 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(4) Supply Current vs. Ambient Temperature
E-CMOS Corp. (www.ecmos.com.tw)
Page 11 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(5) Output Voltage vs. Ambient Temperature
(6) Supply Current vs. Output Current
E-CMOS Corp. (www.ecmos.com.tw)
Page 12 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics
(7) Output Voltage vs. Input Voltage
E-CMOS Corp. (www.ecmos.com.tw)
Page 13 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(8) Input Transient Response
E-CMOS Corp. (www.ecmos.com.tw)
Page 14 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(8) Input Transient Response (Continued)
E-CMOS Corp. (www.ecmos.com.tw)
Page 15 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(9) Load Transient Response
E-CMOS Corp. (www.ecmos.com.tw)
Page 16 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(9) Load Transient Response (Continued)
E-CMOS Corp. (www.ecmos.com.tw)
Page 17 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Typical Performance Characteristics (Continued)
(10) Power Supply Rejection Ratio (EC49513A/L)
(11) Discharge Time vs. Output Capacitance (EC49513L only)
E-CMOS Corp. (www.ecmos.com.tw)
Page 18 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Simplified Application Circuit
Detail Description
The EC49513A/L is a low dropout linear regulator. The device provides preset 2.5V, 2.85V and 3.3V output
voltages for output current up to 300mA. Other mask options for special output voltages from 1.2V to 5.0V with
100mV increment are also available. As illustrated in function block diagram, it consists of a 1.0V reference, error
amplifier, a P-channel pass transistor, an ON/OFF control logic and an internal feedback voltage divider.
The 1.0V band gap reference is connected to the error amplifier, which compares this 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 output 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.
Internal P-Channel Pass Transistor
The EC49513A/L features a P-channel MOSFET pass transistor. Unlike similar designs using PNP pass
transistors, P-channel MOSFETs require no base drive, which reduces quiescent current. PNP based regulators
also waste considerable current in dropout when the pass transistor saturates, and use high base-drive currents
under large loads. The EC49513A/L does not suffer from these problems and consumes only 15μA (Typ.) of
current consumption under heavy loads as well as in dropout conditions.
Enable Function
EN pin starts and stops the regulator. 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. The VOUT Pin enters the GND level through the internal discharge path between
and GND pins.
E-CMOS Corp. (www.ecmos.com.tw)
Page 19 of 24
2010/10/29
VOUT
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Fast Discharge Function
The EC49513L has fast discharge Function on EN pin disable. When user turns off EC49513L, its internal pull low resistor
will discharge output capacitor charge. It’ll avoid other device to arise wrong motions.
Output Voltage Selection
The EC49513A/L output voltage is preset at an internally trimmed voltage 2.5V, 2.85V or 3.3V. The output voltage also can be
mask-optioned from 1.2V to 5.0V with 100mV increment by special order. The first two digits of part number suffix identify the
output voltage (see Ordering Information). For example, the EC49513A/L-33 has a preset 3.3V output voltage.
Current Limit
The EC49513A/L also 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 within 0.5A.
Thermal Overload Protection
Thermal overload protection limits total power dissipation of EC49513A/L. 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 20°C, resulting in a pulsed output during
continuous thermal overload conditions.
Thermal overload protection is designed to protect the EC49513A/L in the event of fault conditions. For continuous
operation, the absolute maximum operating junction temperature rating of TJ = +125°C should not be exceeded.
Operating Region and Power Dissipation
Maximum power dissipation of the EC49513A/L depends on the thermal resistance of the case and printed circuit
board, the temperature difference between the die junction and ambient air, and the rate of airflow. The power
dissipation across the devices is P=IOUT x (VIN-VOUT). The resulting maximum power dissipation is
PMAX =
(TJ − T A ) (TJ − T A )
=
θ JC + θ CA
θ JA
Where (TJ-TA) is the temperature difference between the EC49513A/L die junction and the surrounding air, θJC is
the thermal resistance of the package chosen, and θCA is the thermal resistance through the printed circuit board,
copper traces and other materials to the surrounding air. For better heat-sinking, the copper area should be equally
shared between the VIN, VOUT, and GND pins.
The thermal resistance θJA of SOT23-5L package of EC49513A/L is 250°C/W. based on a maximum operating
junction temperature 125°C with an ambient of 25°C, the maximum power dissipation will be:
PMAX =
(TJ − T A ) (125 − 25)
=
= 0.40W
θ JC + θ CA
250
Thermal characteristics were measured using a double sided board with 1”x 2” square inches of copper area
connected to the GND pin for “heat spreading”.
E-CMOS Corp. (www.ecmos.com.tw)
Page 20 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Dropout Voltage
A regulator’s minimum input output voltage differential, or dropout voltage, determines the lowest usable
supply voltage. In battery powered systems, this will determine the useful end of life battery voltage. The
EC49513A/L uses a P-channel MOSFET pass transistor, its dropout voltage is a function of drain-to-source
on-resistance (RDS (ON)) multiplied by the load current.
V DROPOUT = V IN − VOUT = R DS ( ON ) xI out
E-CMOS Corp. (www.ecmos.com.tw)
Page 21 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Mechanical Dimensions
OUTLINE DRAWING SOT23-5L
E-CMOS Corp. (www.ecmos.com.tw)
Page 22 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Mechanical Dimensions
OUTLINE DRAWING UFN-6L
E-CMOS Corp. (www.ecmos.com.tw)
Page 23 of 24
2010/10/29
EC49513A/L
300mA Linear Regulator with Enable
And Fast Discharge Function
Mechanical Dimensions
OUTLINE DRAWING TSOT23-5
SYMBOL
Dimensions in Millimeters
MIN
E-CMOS Corp. (www.ecmos.com.tw)
Page 24 of 24
NOM
MAX
A
-
1.00
A1
0.00
0.05
0.10
A2
0.84
0.87
0.90
A3
0.58
0.68
0.78
b
0.35
0.40
0.50
C
0.10
0.125
0.15
D
2.70
2.90
3.10
E1
1.40
1.60
1.80
e1
-
1.90(TYP)
-
E
2.60
2.80
3.00
e
-
0.95(TYP)
-
θ1
1°
5°
9°
L
0.37
-
-
L1
-
0.6REF
-
∣L1-L2∣
-
-
0.12
2010/10/29
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