Datasheet

TS5205
Taiwan Semiconductor
Document Number: DS_P0000197 4 Version: I15
ORDERING INFORMATION
OUTPUT VOLTAGE PART NO. PACKAGE PACKING
2.5V
TS5205CX525 RFG SOT-25 3,000pcs / 7” Reel
3.3V
TS5205CX533 RFG SOT-25 3,000pcs / 7” Reel
5.0V
TS5205CX550 RFG SOT-25 3,000pcs / 7” Reel
Note:
1. Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC.
2. Halogen-free according to IEC 61249-2-21 definition.
BLOCK DIAGRAMS
APPLICATION INFORMATION
Enable Input
TS5205 series feature an active-high (>2V) enable (EN) input that allows ON/OFF control of the regulator.
Current drain reduces to “zero” when the device is shutdown, with only micro-amperes of leakage current. The
EN is compatible with CMOS logic interfacing. EN may be directly tied to V
IN
and pulled up to the maximum
supply voltage.
Input Capacitor Requirement
An input capacitor of 0.1µF or greater is recommended when the device is more than 10” away from the bulk AC
supply capacitance or when the supply is a battery.
Output Capacitor Requirement
The TS5205 series requires an output capacitor to maintain stability and improve transient response is necessary.
2.2µF minimum is recommended. Larger values improve the regulator’s transient response. The output capacitor
value may be increased without limit. The output capacitor should have an ESR (effective series resistance) less
than 5Ω and a resonant frequency above 1MHz. Ultra low ESR capacitors can cause a low amplitude oscillation
on the output and/or under damped transient response. Most of tantalum or aluminum electrolytic capacitors are
adequate; film types will work. Since many aluminum electrolytic have electrolytes that freeze at about –30°C,
solid tantalums are recommended for operation below –25
o
C. At lower values of output current, less output
capacitance is required for output stability. The capacitor can be reduced to 0.47µF for current below 10mA or
0.33µF for currents below 1mA .
No Load Stability
The TS5205 series will remain stable and in regulation with no load, unlike many other voltage regulators. This is
especially important in CMOS RAM keep alive applications.