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LP3997MM-3.3/NOPB |LP3997MM33NOPBNSN/a742avaiMicropower 250mA CMOS LDO Regulator with Error Flag / Power-On-Reset 8-VSSOP -40 to 125


LP3997MM-3.3/NOPB ,Micropower 250mA CMOS LDO Regulator with Error Flag / Power-On-Reset 8-VSSOP -40 to 125FEATURES DESCRIPTIONThe LP3997 regulator is designed to meet the2• Low 140-mV Dropout at 250-mA Loa ..
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LP3997MM-3.3/NOPB
Micropower 250mA CMOS LDO Regulator with Error Flag / Power-On-Reset 8-VSSOP -40 to 125
LP3997
VIN
Enable
DELAY
VIN SENSE
VOUT
CBYP
ERROR 2.2 PF
470k
GND40.1 PF 0.1 PF
LP3997
www.ti.com
SNVS272B –MAY 2004–REVISED MAY 2013
Micropower 250-mA CMOS LDO Regulator With Error Flag and Power-On-Reset
Checkfor Samples: LP3997
1FEATURES DESCRIPTION

The LP3997 regulator is designed to meet the Low 140-mV Dropoutat 250-mA Load requirementsof portable, battery-powered systems,• Stable With Ceramic Capacitor. providing accurate output voltage, low noise, and low Low Noise With Bypass Capacitor quiescent current. The LP3997 provides 3.3V output upto 250mA load current. The chip architectureis• Less Than80µA TypicalIQat 250 mA capableof providing output voltages as low as 0.8V.• Virtually ZeroIQ (Disabled) When switched in shutdown mode, the power• Thermal and Short Circuit Protection consumptionis virtually zero. 3.3-V Output(1) The LP3997is designedto be stable with space 8-Lead VSSOP Package(2) saving ceramic output capacitoras smallas1µF.
The LP3997 also includes an out-of-regulation errorAPPLICATIONS flag. When the outputis more than 5% below its Portable Consumer Electronics nominal voltage, the error flag sets to low.Ifa
capacitor is connected to device’s delay pin,a• Cellular Handsets delayed power-on reset signal will be generated.• Laptop and Palm Computers PDAs Digital Cameras
(1) For other voltage options, contact yourTI sales office
(2) For other package options, contact yourTI sales office.
Typical Application Circuit
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