Datasheet Texas Instruments LP3997MM-3.3/NOPB — 数据表

LP3997
www.ti.com SNVS272B – MAY 2004 – REVISED MAY 2013 Micropower 250-mA CMOS LDO Regulator With Error Flag and Power-On-Reset
Check for Samples: LP3997 FEATURES DESCRIPTION The LP3997 regulator is designed to meet the
requirements of portable, battery-powered systems,
providing accurate output voltage, low noise, and low
quiescent current. The LP3997 provides 3.3V output
at up to 250mA load current. The chip architecture is
capable of providing output voltages as low as 0.8V.
When switched in shutdown mode, the power
consumption is virtually zero. 1 2 Low 140-mV Dropout at 250-mA Load
Stable With Ceramic Capacitor.
Low Noise With Bypass Capacitor
Less Than 80 ВµA Typical IQ at 250 mA
Virtually Zero IQ (Disabled)
Thermal and Short Circuit Protection
3.3-V Output (1)
8-Lead VSSOP Package (2) The LP3997 is designed to be stable with space
saving ceramic output capacitor as small as 1ВµF.
The LP3997 also includes an out-of-regulation error
flag. When the output is more than 5% below its
nominal voltage, the error flag sets to low. If a
capacitor is connected to device’s delay pin, a
delayed power-on reset signal will be generated. APPLICATIONS (1) …