CAT6218 Datasheet, PDF (1/9 Pages) Catalyst Semiconductor – 300mA CMOS LDO Regulator

CAT6218
300 mA CMOS LDO
Regulator
Description
The CAT6218 is a 300 mA CMOS low dropout regulator that
provides fast response time during load current and line voltage
changes.
The quick−start feature allows the use of an external bypass
capacitor to reduce the overall output noise without affecting the
turn−on time of just 150 ms.
With zero shutdown current and low ground current of 55 mA
typical, the CAT6218 is ideal for battery−operated devices with supply
voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit
disables the output at supply voltages under 2.1 V typical.
The CAT6218 offers 1% initial accuracy and low dropout voltage,
180 mV typical at 300 mA. Stable operation is provided with a small
value ceramic capacitor, reducing required board space and
component cost.
Other features include fold−back current limit and thermal
protection.
The device is available in the low profile (1 mm max height) 5−lead
thin SOT23 package.
Features
• Guaranteed 300 mA Output Current
• Low Dropout Voltage of 180 mV Typical at 300 mA
• Stable with 1 mF Ceramic Output Capacitor
• External 10 nF Bypass Capacitor for Low Noise
• Quick−start Feature
• No−load Ground Current of 55 mA Typical
• Full−load Ground Current of 80 mA Typical
• ±1.0% Initial Accuracy (V_OUT ≥ 2.0 V)
• ±2.0% Accuracy Over Temperature (V_OUT ≥ 2.0 V)
• “Zero” Current Shutdown Mode
• Fold−back Current Limit and Under−voltage Lockout
• Thermal Protection
• Thin SOT23−5 Package
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Cellular Phones
• Battery−powered Devices
• Consumer Electronics
http://onsemi.com
5
1
TSOT−23
TD SUFFIX
CASE 419AE
PIN CONNECTIONS
1
VIN
VOUT
GND
EN
BYP
(Top View)
MARKING DIAGRAM
RUYM
RU= CAT6218 Device Code
Y = Production Year (last digit)
M = Production Month: 1 − 9, A, B, C
PIN FUNCTION
Pin # Name
Function
1 VIN Supply voltage input.
2 GND Ground reference.
3
EN Enable input (active high); a 2.5 MW
pull−down resistor is provided.
4 BYP Optional bypass capacitor connec-
tion for noise reduction and PSRR
enhancing.
5 VOUT LDO Output Voltage.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2009
1
December, 2009 − Rev. 4
Publication Order Number:
CAT6218/D