MIC5332-SSYMT

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators8-Pin 2 mm x 2 mm UDFN

IC REG LDO DUAL 300MA 2.3V-5.5V 8-UDFN

MIC5332-SSYMT is a dual-channel 300mA low dropout linear regulator with 2.3V to 5.5V input, 3.3V/3.3V outputs, 8-pin 2mm x 2mm UDFN package, -40°C to +125°C operating temperature, low quiescent current, and POR function.Checked against the datasheet

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Technical parameters

Key specs

Output voltage3.3 V

Output current300 mAMax

Input voltage2.3 ~ 5.5 V

Dropout voltage240 mVMax · IOUT=300 mA

Quiescent current25 µATyp · VEN1=High，VEN2=Low，IOUT=100 μA to 300 mA

Datasheet-verified parameters

21 items

Parameter	Value and test conditions	Source
Output Voltage	3.3V/3.3V
Output Current	300 mA per LDO
Input Voltage Range	2.3V to 5.5V
Dropout Voltage	Typ 120 mV, Max 240 mV @ IOUT=300 mA
Quiescent Current	Typ 25 μA, Max 50 μA @ VEN1=High, VEN2=Low, IOUT=100 μA to 300 mA
Package	8-Pin 2 mm x 2 mm UDFN
Operating Temperature	-40°C to +125°C
Absolute Maximum Ratings - Supply Voltage	0V to +6V
Operating Ratings - Supply Voltage	+2.3V to +5.5V
Line Regulation	Typ 0.02 %/V, Max 0.3 %/V @ VIN=VOUT+1V to 5.5V, IOUT=100 μA
Load Regulation	Typ 0.2 %, Max 0.5 % @ IOUT=100 μA to 300 mA
Power Supply Rejection Ratio	Typ 65 dB @ f=1 kHz, COUT=2.2 μF
Current Limit	Min 350 mA, Typ 550 mA, Max 800 mA @ VOUT=0V
Output Voltage Noise	Typ 50 μVRMS @ COUT=1 μF, 10 Hz to 100 kHz
Enable Input Voltage - Logic Low	Max 0.2 V
Enable Input Voltage - Logic High	Min 1.2 V
Turn-On Time	Typ 140 μs, Max 500 μs @ COUT=1 μF (Enable of First LDO)
POR2 Threshold Voltage - Low	Min 88 % of VOUT2
POR2 Threshold Voltage - High	Max 98 % of VOUT2
ESD Rating	2 kV
Protection Features	Current-Limit and Thermal Shutdown Protection

All parameters (7)ExpandCollapse

Power
Dropout Voltage (VDO)	120 mV (Typ)
Ground Current (IGND)	25 μA (Typ)
Output Current per LDO	300 mA
Supply Voltage (VIN)	+2.3V to +5.5V
AC and DC characteristics
Output Voltage Noise (en)	50 μVRMS (Typ)
Ripple Rejection (PSRR)	65 dB (Typ)
Environment and package
Package	8-Pin 2 mm x 2 mm UDFN

Pinout and package

Package8-Pin 2 mm x 2 mm UDFN

Pin	Name	Function	Source
1		VIN: Supply Input
2		GND: Ground
3		POR2: Power-On Reset Output (Regulator 2): Open-drain output. Active low indicates an output undervoltage condition on Regulator 2 when the device is enabled.
4		EN2: Enable Input (Regulator 2): Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
5		EN1: Enable Input (Regulator 1): Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
6		CSET2: Delay Set Input (Regulator 2): Connect external capacitor to GND to set the internal delay for the POR2 output. When left open, there is no delay. This pin cannot be grounded.
7		VOUT2: Regulator Output: LDO2
8		VOUT1: Regulator Output: LDO1
EP		ePAD: Exposed Heat Sink Pad. Connect to GND for best thermal performance.

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DatasheetDatasheet · 2.0 MB · 2026-11-02

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