A6300AE3R-15 [AITSEMI]
LOW DROPOUT VOLTAGE REGULATOR;
| 型号： | A6300AE3R-15 |
| 厂家： | 
AiT Semiconductor |
| 描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总12页 (文件大小：759K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
DESCRIPTION
FEATURES
The A6300A is designed for portable RF and wireless
applications with demanding performance and space
requirements.
Ultra-low Noise for RF Application
Ultra-Fast Response in Line/Load Transient
Quick Start-Up (Typically 50µS)
<0.01µA Standby Current When Shutdown.
Low Dropout:210mV@300mA
Wide Operating Voltage Ranges:2V to 6V
Output Voltage Accuracy: ±2%
TTL-logic-Controlled Shutdown Input
Low Temperature Coefficient
The
A6300A
performance
is
optimized
for
battery-powered systems to deliver ultra low noise and
low quiescent current. A noise bypass pin is available for
further reduction of output noise. Regulator ground
current increases only slightly in dropout, further
prolonging the battery life.
The A6300A also works with low- ESR ceramic
capacitors, reducing the amount of board space
necessary for power applications, critical in hand-held
wireless devices.
Current Limiting Protection
Thermal Shutdown Protection
Only 1µF Output Capacitor Required for
Stability
The A6300A consumes less than 0.01μA in shutdown
mode and has fast turn-on time less than 50μs. The
other features include ultra low dropout voltage, high
output accuracy, current limiting protection, and high
ripple rejection ratio.
High Power Supply Rejection Ratio
Custom Voltage Available
Fast output discharge
Available in SOT-23 and SOT-25 Packages.
The A6300A is available in SOT-23 and SOT-25
packages.
ORDERING INFORMATION
APPLICATIONS
Cellular and Smart Phones
Battery-Powered Equipment
Laptop, Palmtops,Notebook Computers
Package Type
SOT-23
Part Number
A6300AE3R-XXA
A6300AE3VR-XXA
A6300AE5R-XXA
A6300AE5VR-XXA
Hand-Held Instruments
PCMCIA Cards
E3
E5
MP3/MP4/MP5 Players
Portable Information Appliances
SOT-25
Note
XX =Output Voltage
18=1.8V,25=2.5V,33=3.3V
V: Halogen free Package
R : Tape & Reel
TYPICAL APPLICATION
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 1 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
PIN DESCRIPTION
Top View
Top View
Function
Pin #
Symbol
SOT-23
SOT-25
3
1
-
1
2
3
4
5
VIN
GND
CE
Power lnput Voltage.
Ground.
Chip Enable Pin with four options
Reference Noise Bypass. FB pin for adjustable version
Output Voltage.
-
BP
2
VOUT
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 2 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
ABSOLUTE MAXIMUM RATINGS
VCC, Input Supply Voltage
CE lnput Voltage
-0.3V to +6V
-0.3V to +VIN
-0.3V to VIN+0.3V
-0.3V to +6V
300mA
Output Voltage
BP Voltage
Output Current
Maximum Junction Temperature
Operating Temperature Range NOTE1
Storage Temperature Range
ESD
125℃
-40℃ to 85℃
-65℃ to 125℃
2KV
Lead Temperature (Soldering, 10s)
300℃
Stresses above may cause permanent damage to the device. These are stress ratings only and functional operation of the device at
these or any other conditions beyond those indicated in the Electrical Characteristics are not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
NOTE1: The A6300A is guaranteed to meet performance specifications from 0℃ to 70℃. Specifications over the -40℃ to 85℃
operating temperature range are assured by design, characterization and correlation with statistical process controls.
THERMAL RESISTANCE
Package
SOT-23
SOT-25
θJA
θJC
250℃/W
130℃/W
130℃/W
250℃/W
NOTE: Thermal Resistance is specified with approximately 1 square of 1 oz copper.
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 3 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
ELECTRICAL CHARACTERISTICS
VDD=3.6V, CE=VDD, CIN=COUT=1uF, CBP=22nF, TA=25℃, unless otherwise specified.
Min
Typ.
Max
Units
Parameter
Input Voltage
Symbol
VDD
Conditions
-
1.8
-2
-
-
6
+2
-
V
%
Output Voltage Accuracy
Current Limit
ΔVOUT
ILIM
VIN=3.6V, IOUT=1mA
RLOAD=1Ω
400
430
mA
μA
Quiescent Current
IQ
VCE>1.2V, IOUT=0mA
IOUT=200mA, VOUT=2.8V
IOUT=300mA, VOUT=2.8V
VIN=3.6V to 5.5V
IOUT=1mA
1mA<IOUT<300mA
-
-
-
90
130
210
130
180
300
Dropout Voltage
VDROP
mV
Line RegulationNote2
ΔVLINE
ΔVLOAD
TCVOUT
-
-
-
-
0.05
-
0.17
%/V
%/A
Load RegulationNote3
Output Voltage
Temperature CoefficientNote4
Standby Current
2
-
IOUT=1mA
±60
ppm/℃
ISTBY
IIBSD
VCE=GND, Shutdown
VEN=GND or VIN
0.01
0
1
100
μA
nA
CE Input Bias Current
Logic Low
VIL
VIH
VIN=3V to 5.5V, Shutdown
-
-
-
0.4
-
V
V
CE 0.4 V Input
Threshold
Logic High
VIN=3V to 5.5V, Start up
10Hz to100KHz,
IOUT=200mA, COUT=1uF
1.2
Output Noise Voltage
eNO
-
100
-
μVRMS
f=217Hz
f=1KHz
f=10KHz
-
-
-
-
-
-80
-78
-65
165
30
-
-
-
-
-
Power Supply
Rejection Ratio
PSRR
COUT=1uF, IOUT=100mA
dB
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
NOTE2: Line regulation is calculated by
TSD
TSDHY
Shutdown, Temp increasing
℃
℃
-
VOUT1-VOUT2
ΔVIN x VOUT (Normal)
ΔVLINE =〔
〕X100
Where VOUT1 is the output voltage when VIN=5.5V, and VOUT2 is the output voltage when VIN=3.6V, △VIN=1.9V .VOUT (normal) =2.8V.
NOTE3: Load regulation is calculated by
VOUT1-VOUT2
ΔVLOAD =〔
〕X100
ΔIOUT x VOUT (Normal)
Where VOUT1 is the output voltage when IOUT=1mA, and VOUT2 is the output voltage when IOUT=300mA. △IOUT=0.299A, VOUT (normal) =2.8V.
NOTE4: The temperature coefficient is calculated by
VOUT
TCVOUT
=
ΔT x VOUT
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 4 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
TYPICAL PERFORMANCE CHARACTERISTICS
1.Output Voltage vs. Temperature
VIN=3.6V, CIN=COUT=1uF
2.Quiescent Current vs. Temperature
VIN=3.6V, CIN=COUT=1uF
3. Dropout Voltage vs. Load Current
CIN=COUT=1uF
4. PSRR
VIN=3.6V, CBP=22nF, CIN=COUT=1uF
5. CE Pin Shutdown Threshold vs. Temperature
VIN=3.6V, CIN=COUT=1uF
6. CE Pin Shutdown Response
VIN=5V, CIN=COUT=1uF, No Load
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 5 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
7. Load Transient Response
8. Load Transient Response
VIN=5V,VOUT=2.8V, CIN=COUT=1uF,ILOAD=1 to 60mA
VIN=5V,VOUT=2.8V, CIN=COUT=1uF,ILOAD=1 to 250mA
9. Line Transient Response
10. Line Transient Response
VIN=4 to 5V, CIN=COUT=1uF,ILOAD=1mA
VIN=4 to 5V, CIN=COUT=1uF,ILOAD=100mA
11. Start Up
VIN=5V, CIN=COUT=1uF,No Load
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 6 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
BLOCK DIAGRAM
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 7 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
DEATILED INFORMATION
Like any low-dropout regulator, the external capacitors used with the A6300A must be carefully selected for
regulator stability and performance. Using a capacitor whose value is > 1μF on the A6300A input and the
amount of capacitance can be increased without limit. The input capacitor must be located a distance of not
more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality
ceramic or tantalum can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent
series resistance) provides better PSRR and line-transient response. The output capacitor must meet both
requirements for minimum amount of capacitance and ESR in all LDOs application.
The A6300A is designed specifically to work with low ESR ceramic output capacitor in space-saving and
performance consideration. Using a ceramic capacitor whose value is at least 1μF with ESR is > 25mΩ on the
A6300A output ensur-es stability. The A6300A still works well with output capacitor of other types due to the
wide stable ESR range. Output capacitor of larger capacitance can reduce noise and improve load transient
response, stability, and PSRR. The output capacitor should be located not more than 0.5 inch from the VOUT
pin of the A6300A and returned to a clean analog ground.
Bypass Capacitor and Low Noise
Connecting a 22nF between the BP pin and GND pin significantly reduces noise on the regulator output, it is
critical that the capacitor connection between the BP pin and GND pin be direct and PCB traces should be as
short as possible. There is a relationship between the bypass capacitor value and the LDO regulator turn on
time. DC leakage on this pin can affect the LDO regulator output noise and voltage regulation performance.
Enable Function
The A6300A features an LDO regulator enable/ disable function. To assure the LDO regulator will switch on;
the CE turn on control level must be greater than 1.2 volts. The LDO regulator will go into the shutdown mode
when the voltage on the CE pin falls below 0.4 volts. For to protect the system, the A6300A have a quick
discharge function. If the enable function is not needed in a specific application, it may be tied to VDD to keep
the LDO regulator in a continuously on state.
Thermal Considerations
Thermal protection limits power dissipation in A6300A. When the operation junction temperature exceeds 165
℃, the OTP circuit starts the thermal shutdown function turn the pass element off. The pass element turns on
again after the junction temperature cools by 30℃. For continue operation, do not exceed absolute maximum
operation junction temperature 125℃. The power dissipation definition in device is:
PD = (VIN−VOUT) ×IOUT + VIN×IQ
The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of
surroundings airflow and temperature difference between junctions to ambient. The maximum power
dissipation can be calculated by following formula：
PD (MAX) = (TJ (MAX) − TA) /θJA
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 8 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
Where TJ(MAX) is the maximum operation junction temperature 125℃, TA is the ambient temperature and the
θJA is the junction to ambient thermal resistance. For recommended operating conditions specification of
A6300A, where TJ(MAX) is the maximum junction temperature of the die (125℃) and TA is the maximum
ambient temperature. The junction to ambient thermal resistance (θJA is layout dependent) for SOT-23 AND
SOT-25 package are 250℃/W, on standard JEDEC 51-3 thermal test board. The maximum power dissipation
at TA= 25℃ can be calculated by following formula:
PD(MAX) = (125℃−25℃)/250 = 400mW (SOT-23 & SOT-25)
The maximum power dissipation depends on operating ambient temperature for fixed TJ (MAX) and thermal
resistance θJA. It is also useful to calculate the junction of temperature of the A6300A under a set of specific
conditions. In this example let the Input voltage VIN=3.3V, the output current Io=300mA and the case
temperature TA=40℃ measured by a thermal couple during operation. The power dissipation for the VO=2.8V
version of the A6300A can be calculated as:
PD = (3.3V−2.8V) ×300mA+3.6V×100uA =150mW
And the junction temperature, TJ, can be calculated as follows:
TJ=TA+PD×θJA=40℃+0.15W×250℃/W =40℃+37.5℃=77.5℃<TJ(MAX) =125℃
For this operating condition, TJ is lower than the absolute maximum operating junction temperature,125°C,
so it is safe to use the A6300A in this configuration.
Layout considerations
To improve ac performance such as PSRR, output noise, and transient response, it is recommended that the
PCB be designed with separate ground planes for VIN and VOUT, with each ground plane connected only at the
GND pin of the device. In addition, the ground connection for the bypass capacitor should connect directly to
the GND pin of the A6300A.
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 9 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
PACKAGE INFORMATION
Dimension in SOT-23 Package (Unit: mm)
SYMBOL
MIN
MAX
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
c
D
E
E1
e
0.950(BSC)
e1
L
1.800
0.300
0°
2.000
0.600
8°
θ
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 10 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
Dimension in SOT-25 (Unit: mm)
Symbol
Min
Max
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
c
D
E
E1
e
0.950(BSC)
e1
L
1.800
0.300
0°
2.000
0.600
8°
θ
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 11 -
A6300A
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
300mA CMOS ULTRA LOW NOISE AND FAST RESPONSE
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer.
As used herein may
In order to
involve potential risks of death, personal injury, or servere property, or environmental damage.
minimize risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.4
-FEB 2010 RELEASED, DEC 2012 UPDATE –
- 12 -
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