AS1103 Datasheet: (AS1101 - AS1104) Low-Dropout LED Drivers





AS1103 Datasheet PDF

Part Number AS1103
Description (AS1101 - AS1104) Low-Dropout LED Drivers
Manufacture AMSCO
Total Page 13 Pages
PDF Download Download AS1103 Datasheet PDF

Features: www.DataSheet4U.com austriamicrosystems Data Sheet A S 11 0 1 , A S 11 0 2 , A S 11 0 3 , A S 11 0 4 Low-Dropout LED Drivers 1 General Description The AS1 10x family are LED drivers providing ma tched current source bias for any color LED, including white and blue. LED cur rent is programmable using an external resistor. The AS1101 LED currents are t ypical 460 x ISET (per LED) at an LED c athode voltage of 150mV and typical 650 x ISET at an LED cathode voltage of 1V . The AS1102, AS1103, and AS1104 LED cu rrents are typical 230 x ISET (per LED) at an LED cathode voltage of 150mV and typical 325 x ISET at an LED cathode v oltage of 1V where ISET is the current through the external resistor connected to the CTRL pin. The AS110x family can drive up to 4 high-current LEDs. The A S1101, AS1102, and AS1104 incorporate a chipenable feature via pin ON. When th e devices are disabled, the supply curr ent drops to less than 1µA. The device s are pin-to-pin compatible to the FAN5611, FAN5612 and FAN5614..

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AS1103 datasheet
www.DataSheet4U.com
austriamicrosystems
AS1101, AS1102, AS1103, AS1104
Low-Dropout LED Drivers
Data Sheet
1 General Description
2 Key Features
The AS110x family are LED drivers providing matched
! LED Drivers for Parallel-Connected LEDs
current source bias for any color LED, including white
and blue. LED current is programmable using an exter-
nal resistor.
! Ultra-Low Voltage Drop: Less Than 150mV (for Li-
ion Battery Support)
! Analog and PWM Brightness Control
The AS1101 LED currents are typical 460 x ISET (per
LED) at an LED cathode voltage of 150mV and typical
650 x ISET at an LED cathode voltage of 1V.
! Up to 80mA per LED (AS1101)
! Up to 40mA per LED (AS1102, AS1103, AS1104)
! No Electromagnetic Interference, No Switching-
The AS1102, AS1103, and AS1104 LED currents are
Noise
typical 230 x ISET (per LED) at an LED cathode voltage
of 150mV and typical 325 x ISET at an LED cathode volt-
age of 1V where ISET is the current through the external
resistor connected to the CTRL pin.
! Current-Matching Requires No External Compo-
nents
! Active-Low Shutdown Mode (AS1101, AS1102,
and AS1103)
The AS110x family can drive up to 4 high-current LEDs.
! Low Shutdown-Current: Less Than 1µA
The AS1101, AS1102, and AS1104 incorporate a chip-
enable feature via pin ON. When the devices are dis-
abled, the supply current drops to less than 1µA.
The devices are pin-to-pin compatible to the FAN5611,
FAN5612 and FAN5614.
! SC70-6 Package (AS1101, AS1102, and AS1103)
! MSOP-8 Package (AS1104)
! Pin-to-Pin Compatible to FAN5611, FAN5612, and
FAN5614
The AS1101, AS1102, and AS1103 are available in a
3 Applications
6-pin SC70 package; the AS1104 is available in aD8a-tpainSheet4U.com
MSOP package.
The AS110x devices are ideal for LED displays and key-
board backlights, as well as lighting management units
for battery powered audio devices such as MP3 and CD
players, mobile and cordless phones, PDAs, portable
DVD players, and consumer electronics.
Figure 1. Typical Application Diagrams
DataShee
2 Diode Control with On/Off
VIN
3 Diode Control with On/Off
VIN
VSET(3V)
ENABLE
ISET
RSET
I1/I2 I3/I4
CTRL AS1101
ON GND
VSET(3V)
ENABLE
ISET
RSET
I3 I2 I1
CTRL AS1102
ON GND
4 Diode Control
VIN
VSET(3V)
ISET
RSET
I4 I3 I2
CTRL AS1103
GND
I1
4 Diode Control with On/Off
VIN
VSET(3V)
ENABLE
ISET
RSET
I4 I3 I2
CTRL AS1104
ON GND
I1
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