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PDF A6110 Data sheet ( Hoja de datos )
| Número de pieza | A6110 | |
| Descripción | LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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AiT Semiconductor Inc.
www.ait-ic.com
A6110
LOW DROPOUT VOLTAGE REGULATOR
1A CMOS, LOW CONSUMPTION
DESCRIPTION
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 two types, either
fixed or adjustable 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. The output range of adjustable types is
from 1V to 5V. The adjustable output voltage is only
available in SOT-89-5 package.
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.
A standby mode with ultra low supply current can be
realized with the chip enable function.
The A6110 is available in DFN-6, SOT-89-5,
SOT-89-3, SOT-223-5, SOT-223-3, TO-263-3,
TO-220-3, TO-252-3 and TO-252-5 packages.
FEATURES
Up to 1A Output Current
65uA Operating Supply Current
Excellent Line Regulation: 0.05%/V
Low Dropout: 300mV@1A(VOUT=3.3V)
High Power Supply Rejection Ratio
Wide Operating Voltage Range: 2.5V to 6.0V
High Accuracy:±2%
Built-in Auto Discharge Function
500mA in-rush Current Limit
Fold-back Current Limit Protection
Thermal Shutdown Protection
Available in DFN-6, SOT-89-5, SOT-89-3,
SOT-223-5, SOT-223-3, TO-263-3, TO-220-3,
TO-252-3 and TO-252-5 packages.
ORERING INFORMATION
Package Type
Part Number
DFN-6
J6
A6110J6R-XX
A6110J6VR-XX
SOT-89-5
K5
A6110K5R-XXZ
A6110K5VR-XXZ
SOT-89-3
K3
A6110K3R-XXZ
A6110K3VR-XXZ
SOT-223-5
N5
A6110N5R-XX
A6110N5VR-XX
SOT-223-3
N
A6110NR-XXZ
A6110NVR-XXZ
TO-263-3
S3
A6110S3R-XXZ
A6110S3VR-XXZ
TO-220-3
T3
A6110T3U-XX
A6110T3VU-XX
TO-252-3
D3
A6110D3R-XXZ
A6110D3VR-XXZ
TO-252-5
D5
A6110D5R-XX
A6110D5VR-XX
XX: Output Voltage
25=2.5V, 33=3.3V
Note
V: Green Package
Z: Package Type
see pin description
R: Tape & Reel
AiT provides all Pb free products
Suffix “ V “ means Green Package
APPLICATION
Portable Communication Equipment
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards and Wireless LAN
Cameras & VCRs
TYPICAL APPLICATION
A6110 in Fixed Output Voltage Version
REV1.3
- OCT 2010 RELEASED, MAY 2011 REVISED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A6110
LOW DROPOUT VOLTAGE REGULATOR
1A CMOS, LOW CONSUMPTION
Top View
A
2
1
3
Pin Number
TO-263-3
B
3
1
2
Top View
C
3
2
1
Top View
Symbol
Functions
VOUT
GND
VDD
Output Pin
Ground Pin
Input Pin
REV1.3
- OCT 2010 RELEASED, MAY 2011 REVISED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
A6110
LOW DROPOUT VOLTAGE REGULATOR
1A CMOS, LOW CONSUMPTION
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
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 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.
REV1.3
- OCT 2010 RELEASED, MAY 2011 REVISED -
- 11 -
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet A6110.PDF ] | |
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