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CAT6221
LDO, Dual, 2.8 V / 1.8 V, 300 mA
CAT6221
300 mA CMOS Dual LDO
Regulator
Description
The 300 mA CMOS Dual LDO CAT6221 combines in a single
TSOTï23 6ïlead package two low dropout regulators (LDO), each
with its own enable pin.
The regulator outputs drive loads up to 300 mA. By design, the dual
LDO provides fast response time during load current and line voltage
changes.
Each LDO is optimized for low noise and high crosstalk isolation.
With zero shut down current and a low quiescent current of 100 A,
the dual LDO is ideal for batteryïoperated devices with supply voltage
from 2.3 V to 5.5 V.
The dual LDO offers 1% initial accuracy and very low dropout
voltage, typical 210 mV at 300 mA. Stable operation is provided with
small 1 F ceramic output capacitors, reducing required board space
and component cost.
Other features include foldïback current limit and thermal
protection.
The dual LDO is available in the tiny 6ïlead TSOTï23 package
with a maximum height of 0.8 mm.
Features Two Outputs with Guaranteed 300 mA Peak Output Current Low Dropout V oltages of 210 mV Typical at 300 mA Stable with Ceramic Output Capacitors Independent Enable Pins Under V oltage Lockout Noïload Ground Current of 100 A Typical Fullïload Ground Current of 160 A Typical ±1.0% Output Voltage Initial Accuracy (VOUT 2.0 V) ±2.0% Accuracy Over Temperature (VOUT 2.0 V) Zero Current Shutdown Mode Foldïback Current Limit and Thermal Protection TSOTï23 6ïlead, 0.8 mm Height Package These Devices are PbïFree, Halogen Free/BFR Free and are RoHS
Compliant
Applications Cellular Phones Batteryïpowered Devices Consumer Electronics
http://
TSOTï23
TD SUFFIX
CASE 419AF
PIN CONNECTIONS
T3YM
MARKING DIAGRAM
(Top View)
VOUT1
VOUT2
EN1
VIN
EN2
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
ORDERING INFORMATION
Enable input (active high) for
VOUT1.
Supply voltage input.2
Enable input (active high) for
VOUT2.
LDO Output Voltage 2.4
Ground reference.5
FunctionPin #
PIN FUNCTION
Name
EN1
VIN
EN2
VOUT2
GND = CAT6221 Device Code = Production Year (last digit) = Production Month: 1 ï 9, A, B, C
GND
LDO Output Voltage 1.6 VOUT1
