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A103
600mA CMOS LOW DROPOUT REGULATOR
DESCRIPTION
The A103 is a positive, low dropout regulator rated for 600mA output current, making it ideal for battery applications. Low power consumption and high accuracy is achieved through CMOS technology and internal trimmed reference voltage.
The space-saving SOT-89, and SOT-223 packages are attractive for "Pocket" and "Hand Held" applications.
The A103 consists of a high-precision voltage reference, and an error correction circuit. The fast transient response is an outstanding feature for applications with various loads.
TYPICAL APPLICATION CIRCUIT
VIN
CIN 1µF
VIN VOUT
A103
GND
VOUT
COUT 4.7µF
VOLTAGE OPTIONS
A103LFT-1.5 A103LFT-1.8 A103LFT-2.5 A103LFT-3.3 A103NFT-1.5 A103NFT-1.8 A103NFT-2.5 A103NFT-3.3
SOT-223, 1.5V Fixed SOT-223, 1.8V Fixed SOT-223, 2.5V Fixed SOT-223, 3.3V Fixed SOT-89, 1.5V Fixed SOT-89, 1.8V Fixed SOT-89, 2.5V Fixed SOT-89, 3.3V Fixed
FEATURES ±1.5% internally trimmed output. Guaranteed 600mA Output. P-MOS output stage with low RDS, ON. Internal thermal overload protection. Enhanced pin-to-pin compatible to the AME8805. 3-Lead SOT-89 and SOT-223 packages.
APPLICATIONS
CD ROM, DVD Wireless Communication Systems Digital Camera Battery Powered Applications Instrumentation Portable Electronics Cordless Phones PC Peripherals
PACKAGE PIN OUT
3. VOUT 2. VIN 1. GND
3-Pin Plastic SOT-89 Surface Mount (Top View)
3. VOUT 2. GND 1. VIN
3-Pin Plastic SOT-223 Surface Mount (Top View)
ORDER INFORMATION
Plastic SOT-223
L 3-pin
N
Plastic SOT-89 3-pin
Lead Free
A103LFT-X.X
A103NFT-X.X
Green
A103LGT-X.X
Note: 1. For other output voltage options and pin out, please consult sales or FAEs.
2: Part Number: A 1 0 3 □ □ □ - □.□
A103NGT-X.X
Package Type. PK: SOT-89; SK: SOT-223 Package Process. F: Lead Free; G: Green
Voltage Options Packing. T: Tape & Reel; N/A: Bulk
Copyright © 2008 ADDtek Corp.
1
DD085_A -- JUNE 2008
ABSOLUTE MAXIMUM RATINGS (Note) Input Voltage, VIN Maximum Operating Junction Temperature, TJ Storage Temperature Range Lead Temperature (soldering, 10 seconds)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal.
BLOCK DIAGRAM
VIN
Current Limiter
VOUT
A103
13V 150°C -65°C to 150°C 260°C
GND
VREF
POWER DISSIPATION TABLE
Package Types
SOT-223
Thermal Resistance from Junction to Ambient, θJA, (°C/ W ) Thermal Resistance from Junction to Tab, θJT, (°C/ W )
116 21
Note: TJ = TA + (PD × θJA) PD: Power dissipation. θJA: Thermal resistance from Junction to Ambient.
For SOT-89 package, θJT = 25°C / W.
TJ = TTAB + (PD × θJT) TTAB: Tab temperature.
θJT: Thermal resistance from junction to tab of the package.
The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow.
SOT-89 173 25
Copyright © 2008 ADDtek Corp.
2
DD085_A -- JUNE 2008
A103
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol Min.
Input Voltage Load Current (with adequate heat sinking) Input Capacitor (VIN to GND) Output Capacitor with ESR of 10Ω max., (VOUT to GND) Operating ambient temperature range Operating junction temperature
VIN 3.0 IO 5
0.1 1.0 TA -40 TJ
Typ. 300
Max. 10 600
85 125
Units V mA µF µF °C °C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VIN = VOUT(TYP) + 1V, IO = 10mA, COUT = 4.7µF, TA=25 °C. (Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Symbol
Test Conditions
Min Typ Max Units
Output Voltage Accuracy Line Regulation Load regulation
Dropout Voltage
Ground Pin Current Current Limit Output Voltage Temperature Coefficient
VO ∆VOI ∆VOL
∆V
IQ ICL
IO = 10mA
VIN = (VOUT + 1V) to 6V IO = 10mA
VIN = 5V, 10mA ≤ IO ≤ 600mA
VO>2.5V
IO = 300mA IO = 600mA
2.0V