SIP21110 Datasheet, PDF (1/12 Pages) Vishay Siliconix – 250-mA Adjustable, Low Dropout Regulator

SiP21110
Vishay Siliconix
250-mA Adjustable, Low Dropout Regulator
DESCRIPTION
The SiP21110 BiCMOS 250 mA LDO voltage regulators are
the perfect choice for low battery operated low powered
applications. An ultra low ground current and low dropout
voltage of 225 mV at 250 mA load helps to extend battery life
for portable electronics.
The SiP21110 output is adjusted with an external resistor
network.
The regulator allows stable operation with very small ceramic
output capacitors, reducing board space and component
cost. It is designed to maintain regulation while delivering
330 mA typical peak current upon turn-on. During start-up,
an active pull-down circuit improves the output transient
response and regulation. In shutdown mode, the output
automatically discharges to ground through a 100 Ω NMOS.
The SiP21110 are available in TSOT23-5L packages for
operation over the industrial operation range (- 40 °C to
+ 85 °C).
TYPICAL APPLICATION CIRCUIT
FEATURES
• TSOT23-5L (3.05 mm x 2.85 mm x 1.0 mm)
• 1.0 % output voltage accuracy at 25 °C
• Low dropout voltage: 225 mV at 250 mA
• 35 µA (typical) ground current in 1 mA load
RoHS
COMPLIANT
• 1 µA maximum shutdown current at 85 °C
• Output auto discharge in shutdown mode
• Built-in short circuit (500 mA typical) and thermal
protection (160 °C typical)
• - 40 °C to + 125 °C junction temperature range for
operation
• Uses low ESR ceramic capacitors
• Compliant to RoHS Directive 2002/95/EC
APPLICATIONS
• Cellular phones, wireless handsets
• PDAs
• MP3 players
• Digital cameras
• Pagers
• Wireless modem
• Noise-sensitive electronic systems
V_IN
CIN = 1 µF
EN
1 V_IN
VOUT 5
2 GND
COUT = 1µF
SiP21110
3 EN
Adj 4
TSOT23-5L Package
V_OUT
Document Number: 69921
S09-1046-Rev. C, 08-Jun-09
www.vishay.com
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