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MIC5219-3.3YM5-TR

LDO ultrabajo ruido 500mA pico, salida fija 3.3V, SOT-23-5, entrada 2.5-12V, 350mV dropout @ 500mA, 80uA Iq, PSRR 75dB, -40C a +125C.

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Pieza del fabricante：

MIC5219-3.3YM5-TR

Paquete：

SOT-23-5 (2,9 x 1,6 x 1,1 mm)

Descripción

Productos

The MIC5219-3.3YM5-TR is a 500 mA peak-output ultra-low-noise LDO linear regulator from Microchip (formerly Micrel) in a SOT-23-5 package. It provides a fixed 3.3 V output with +/-1% accuracy from a 2.5 V to 12 V input. The BYP pin with an external 470 pF capacitor enables ultra-low output noise for RF-sensitive applications. Near-zero shutdown current (<1 μA) and CMOS/TTL-compatible enable control make it ideal for battery-powered and portable devices.

Especificaciones

Output Voltage	3.3 V fixed (+/-1% typ)
Max Output Current	500 mA peak
Input Voltage	2.5 V to 12 V
Dropout Voltage	350 mV typ @ 500 mA / 115 mV typ @ 50 mA
Corriente de reposo	80 μA typ @ light load
Shutdown Current	<1 μA typ
PSRR	75 dB @ 120 Hz
Line Regulation	0.009%/V typ
Load Regulation	0.05% typ
Temperatura de funcionamiento	-40 °C to +125 °C
Paquete	SOT-23-5 (2.9 x 1.6 x 1.1 mm)

Características

Ultra-low noise output with BYP pin bypass capacitor
Near-zero shutdown current extends battery life
CMOS P-MOSFET pass element: ground current does not increase with load
Current limit, thermal shutdown, and reverse-battery protection
Only 2.2 μF tantalum output capacitor required
Available in fixed and adjustable output voltage versions

Aplicaciones

RF / wireless module power supply
Audio circuit low-noise supply
Dispositivos a pilas
GSM/GPRS module peak-current supply
USB-powered devices
3.3 V logic power rail

Introducción del producto:MIC5219-3.3YM5-TR Presentación del producto

The MIC5219-3.3YM5-TR is a 500mA peak-output ultra-low-noise LDO from Microchip (formerly Micrel) in SOT-23-5 package. Fixed 3.3V output with +/-1% accuracy. 350mV typical dropout at 500mA and 80uA quiescent current. BYP pin with 470pF capacitor enables ultra-low noise for RF applications. Near-zero shutdown current (<1uA). CMOS/TTL-compatible enable pin. Current limit, thermal shutdown, and reverse-battery protection included.

Principio de funcionamiento:MIC5219-3.3YM5-TR Principio de funcionamiento

The MIC5219 uses a CMOS P-channel MOSFET pass element, so ground current does not increase significantly with load unlike bipolar LDOs. A bandgap reference provides a precise voltage reference; the error amplifier compares the feedback voltage with the reference and drives the P-MOSFET gate to regulate the output. The BYP pin connects to the internal reference; a 470pF capacitor filters reference noise for ultra-low output noise. EN pin controls the P-MOSFET; shutdown reduces ground current to near-zero. Current limit and thermal shutdown protect against faults.

Descripción de la clavija:MIC5219-3.3YM5-TR Definición y funciones de las clavijas

Pin	SOT-23-5	Función	Descripción
1	EN	Input Supply	2.5V~12V
2	GND	Suelo	-
3	ES	Enable	CMOS/TTL; HIGH=on
4	BYP	Bypass / Adjust	Fixed ver: 470pF cap to GND for noise
5	OUT	Salida	3.3V; 2.2uF tantalum cap

Application Scenarios:In which products and applications isMIC5219-3.3YM5-TR usado

RF / wireless module power supply
Audio circuit low-noise supply
Dispositivos a pilas
GSM/GPRS module peak-current supply
USB-powered devices
3.3V logic power rail

Alternative Models:What chips are recommended as replacements for MIC5219-3.3YM5-TR

Modelo	Tipo	Notas
MIC5219-5.0YM5-TR	Same family	5.0V fixed output version
MIC5219YM5-TR	Same family	Adjustable output version
TLV70033DDCR	Equivalente funcional.	TI 3.3V 200mA LDO; SOT-23-5
RT9193-33GB	Equivalente funcional.	Richtek 3.3V 300mA LDO
AP2112K-3.3	Equivalente funcional.	BCD 3.3V 600mA LDO; SOT-23-5