A6110DR-33 [AITSEMI]
LOW DROPOUT VOLTAGE REGULATOR;
| 型号： | A6110DR-33 |
| 厂家： | 
AiT Semiconductor |
| 描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总13页 (文件大小：557K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
DESCRIPTION
FEATURES
The A6110 is a low-dropout regulator that operates
the input voltage from 2.5V to 6V and delivers 1 A
load current. The A6110 is available in fixed output
voltage. The output voltage of the fixed types is
preset at an internally trimmed voltage 1V, 1.2V,
1.3V, 1.5V, 1.8V, 2.5V, 2.7V, 2.8V, 2.85V, 3.0V,
3.2V, 3.3V, 5V or can be made with options of the
output range from 1V to 5V in 50mV increments.
Up to 1A Output Current
70uA Operating Supply Current
Excellent Line Regulation: 0.05%/V
Low Dropout: 350mV@1A(VOUT=3.3V)
High Power Supply Rejection Ratio
Wide Operating Voltage Range: 2.5V to 6.0V
1V to 5V Factory-Preset Output
High Accuracy:±2%
The A6110 consists of a voltage reference unit, an
error amplifier, resistor net for setting output voltage,
a current limit circuit for over-current and a
thermal-shutdown circuit.
Built-in Auto Discharge Function
500mA in-rush Current Limit
Fold-back Current Limit Protection
Thermal Shutdown Protection
Available in TO252-3 and SOT223-3 packages.
The A6110 is available in TO252-3 and SOT223-3
packages.
APPLICATION
ORERING INFORMATION
Portable Communication Equipment
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
Package Type
Part Number
A6110DR-XXZ
A6110DVR-XXZ
A6110NR-XXZ
A6110NVR-XXZ
TO252-3
D
N
SPQ: 2,500pcs/Reel
SOT223-3
SPQ: 2,500pcs/Reel
PCMCIA Cards and Wireless LAN
Cameras & VCRs
XX: Output Voltage
25=2.5V, 33=3.3V
Z: Package Type
see pin description
V: Halogen free Package
R: Tape & Reel
Note
TYPICAL APPLICATION
AiT provides all RoHS products
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 1 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
PIN DESCRIPTION
Top View
Pin Number
TO252
Top View
Functions
Symbol
A
1
2
3
B
2
3
1
GND
VOUT
VDD
Ground Pin
Output Pin
Input Pin
Top View
Pin Number
SOT223-3
Top View
Top View
Top View
Symbol
Functions
A
1
2
3
B
C
3
1
2
D
2
1
3
3
2
1
VOUT
GND
VDD
Output Pin
Ground Pin
Input Pin
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 2 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
ABSOLUTE MAXIMUM RATINGS
VDD, Input Supply Voltage
Output Voltage
-0.3V ~ +7V
-0.3V~VIN+0.3V
1.4A
Output Current
Maximum Junction Temperature
Operating Temperature Range NOTE1
Storage Temperature Range
Lead Temperature (Soldering, 10s)
125°C
-40°C~85°C
-65°C~125°C
300°C
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 A6110 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the -40°C to 85°C operating
temperature range are assured by design, characterization and correlation with statistical process controls.
THERMAL RESISTANCE NOTE2
Package
TO252-3
SOT223-3
θJA
θJC
90°C/W
160°C/W
10°C/W
20°C/W
NOTE2: Thermal Resistance is specified with approximately 1 square of 1 oz copper.
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 3 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
ELECTRICAL CHARACTERISTICS NOTE3
VDD= VOUT +1V, and if VOUT < 1.5V, VDD=2.5V, CIN=2.2μF, COUT=2.2μF, TA=25°C, unless otherwise specified.
Parameter
Symbol
Conditions
Min
TYP
Max
Units
VDD
Input Voltage
2.5
-
6
V
Output Voltage Accuracy
Current Limit
∆VOUT
ILIM
IOUT = 1mA
-2
-
+2
%
A
1.0
1.3
-
Short Circuit Current
Quiescent Current
ISCC
IQ
VOUT = 0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
250
70
-
mA
μA
IOUT = 0mA
120
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
1.2V
1.5V
1.8V
420
260
180
140
110
100
870
700
570
440
350
340
-
-
-
-
-
-
-
-
-
-
-
-
IOUT = 300mA
Dropout Voltage NOTE4
VDROP
mV
IOUT = 1A
2.5V ≤ VDD ≤ 6V,
I
OUT = 100mA
3.0V ≤ VDD ≤ 6V,
OUT = 100mA
3.8V ≤ VDD ≤ 6V,
OUT = 100mA
5.5V ≤ VDD ≤ 6V,
OUT = 100mA
2.5V
3.3V
5.0V
Line Regulation NOTE5
∆VLINE
-
0.05
0.5
%/V
I
I
I
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 4 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
Parameter
Symbol
Conditions
1mA ≤ IOUT ≤ 1A
OUT = 100mA,
Min
-
TYP
20
Max
-
Units
mV
Load Regulation NOTE6
Output Voltage NOTE7
Temperature Coefficient
Output Noise Voltage
∆VLOAD
I
TCVOUT
eNO
-
-
-
±100
45
-
-
-
ppm/°C
uVRMS
-40°C ≤ T ≤ 85°C
10Hz to100kHz, IOUT = 1mA
f = 1kHz
Power
Supply
Rejection
Ratio
70
(VOUT ≤ 3.3V)
f = 1kHz
PSRR
0.2VP-P Ripple, IOUT = 100mA
Shutdown, Temp increasing
dB
-
-
-
-
60
165
30
-
-
-
-
(VOUT > 3.3V)
Thermal Shutdown
Temperature
TSD
TSDHY
RDSC
°C
°C
Ω
Thermal Shutdown
Hysteresis
Output Discharge
Resistance
50
NOTE3: 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
NOTE4: The required minimum input operating voltage is equal to VOUT + VDROP, and if VOUT + VDROP < 2.5V, the required minimum input
operating voltage must be set to 2.5V. VOUT is the normal output voltage, e.g. VOUT = 2.8V for 2.8V fixed output version.
NOTE5: Line regulation is calculated by ∆VLINE = [(VOUT1 - VOUT2)/ (∆VDD x VOUT)] x 100
Where VOUT1 is the output voltage when VDD1 = 6.0V, and VOUT2 is the output voltage when VDD2 = max (VOUT + 0.5V, 2.5V).
∆VDD = VDD1 - VDD2
.
NOTE6: Load regulation is calculated by ∆VLOAD = VOUT1 - VOUT2
Where VOUT1 is the output voltage when IOUT1=1mA, and VOUT2 is the output voltage when IOUT2 = 1.0A.
NOTE7: The temperature coefficient is calculated by TCVOUT = ∆VOUT/ (∆T x VOUT
)
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 5 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTIC
VDD = VOUT + 1V, and if VOUT < 1.5V, VDD = 2.5V, CIN = 2.2μF, COUT = 2.2μF, TA = 25°C, unless otherwise noted.
1.
3.
5.
Output Voltage vs. Input Voltage (1.0V)
Output Voltage vs. Input Voltage (3.3V)
Quiescent Current vs. Temperature (3.3V)
2.
4.
6.
Dropout Voltage vs. Output Current (3.3V)
Output Voltage vs. Temperature (3.3V)
Quiescent Current vs. Input Voltage (3.3V)
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 6 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
7.
Output Voltage vs. Output Current (3.3V)
8.
Load Transient Response (3.3V)
9.
Load Transient Response (3.3V)
10. Line Transient Response (3.3V)
11. Line Transient Response (3.3V)
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 7 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
BLOCK DIAGRAM
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 8 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
DETAILED INFORMATION
The A6110 is a low dropout CMOS-based positive voltage regulator that operates the input voltage from
+2.5V to 6.0V. Output voltages are optional ranging from 1.0V to 5.0V, and can supply current up to 1.0 A.
Thermal Protection
Thermal overload protection limits total power dissipation in the A6110. When the junction temperature
exceeds TJ=165°C, the OTP circuit starts the thermal shutdown function and turns the pass element off
allowing the IC to cool. The OTP circuit turns on the pass element again after IC’s junction temperature cool
by 30°C, result in a pulsed output during continuous thermal overload conditions. Thermal-overloaded
protection is designed to protect the A6110 in the event of fault conditions. Do not exceed the absolute
maximum junction temperature rating of TJ=125°C for continuous operation. The build-in fold-back current
limit protection circuit will reduce current value as output voltage drops. When output is shorted to ground,
current limit is reduced to 250mA, avoiding damaging the device.
Operating Region and Power Dissipation
The maximum power dissipation of A6110 depends on the thermal resistance of the case and circuit board,
the temperature difference between the die junction and ambient air, and the rate of airflow. The power
dissipation across the device is
PD = (VDD−VOUT) ×IOUT + VDD×IQ
The maximum power dissipation is
PD (MAX) = (TJ (MAX) − TA) /θJA
Where TJ (MAX) is the maximum operation junction temperature 125°C, TA is the ambient temperature and
the θJA is the junction to ambient thermal resistance. The GND pin of the A6110 performs the dual function of
providing an electrical connection to ground and channeling heat away. Connect the GND pin to ground using
a large pad or ground plane.
Capacitor Selection and Regulator Stability
Like any low-dropout regulator, the external capacitors used with the A6110 must be carefully selected for
regulator stability and performance. The A6110 requires an output capacitor between the VOUT and GND pins
for phase compensation. Using a capacitor whose value is ≥1μF on the A6110 input and the amount of
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 9 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
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 LDO applications. The A6110 is designed
specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. In
the A6110, phase compensation is made with the output capacitor for securing stable operation even if the
load current is varied. For this purpose, use a 2.2uF capacitor between VOUT pin and GND pin as close as
possible.
Load-Transient Considerations
The A6110 load-transient response graphs show two components of the output response: a DC shift from the
output impedance due to the load current change, and the transient response. The DC shift is quite small due
to the excellent load regulation of the IC. Typical output voltage transient spike for a step change in the load
current from 0mA to 50mA is tens of mV, depending on the ESR of the output capacitor. Increasing the output
capacitor's value and decreasing the ESR attenuates the overshoot.
Input-Output (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. Because
the A6110 uses a P-Channel MOSFET pass transistor, the dropout voltage is a function of drain-to-source on
resistance [RDS(ON)] multiplied by the load current.
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 VDD and VOUT, with each ground plane connected only at
the GND pin of the device. Make VDD and GND lines sufficiently wide. If their impedance is high, noise pickup
or unstable operation may result. Connect a capacitor C1 between VDD and GND pin, as close as possible to
the pins. Set external components, especially the output capacitor C2, as close as possible to the IC, and
make wiring as short as possible.
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 10 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
PACKAGE INFORMATION
Dimension in TO252-3 (Unit: mm)
Symbol
Min
0
Max
0.10
2.40
1.12
0.84
0.79
0.57
0.52
6.70
A1
A2
A3
b
b1
c
2.20
1.02
0.75
0.74
0.49
0.48
6.50
c1
D
D1
D2
E
E1
E2
e
5.334 REF
4.70
9.90
6.00
4.92
10.30
6.20
5.30 REF
2.286 BSC
L
1.40
0.90
0.60
1.70
0°
1.60
1.25
1.00
1.90
8°
L2
L3
L4
θ
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 11 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
Dimension in SOT223-3 (Unit: mm)
Symbol
A
Min
1.50
0.02
1.45
0.80
0.67
0.66
2.96
2.95
0.30
0.29
6.35
6.30
6.80
3.40
Max
1.80
0.10
1.75
1.00
0.80
0.75
3.09
3.05
0.35
0.31
7.05
6.70
7.20
3.60
A1
A2
A3
b
b1
b2
b3
c
c1
D
D1
E
E1
e
e1
L
2.30 BSC
4.60 BSC
0.80
1.20
L1
L2
θ
1.75 REF
0.25 BSC
0°
10°
8°
14°
θ1
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 12 -
A6110
AiT Semiconductor Inc.
www.ait-ic.com
LOW DROPOUT VOLTAGE REGULATOR
1A HIGH PSRR CMOS,LINEAR REGULATOR
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 server 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.
REV1.7
- OCT 2010 RELEASED, APR 2016 UPDATAED -
- 13 -
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