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Contents

Pinout
Key specifications
Electrical characteristics
CAD (KiCad official)
Provenance

README

markdown

MD7219E33PC1

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-5L

MD7219E33PC1 from Shanghai Mingda Microelectronics, in a SOT-89-5L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	NC	unconnected	No connection; the datasheet pin drawing labels this pin NC.
2	GND	power_in	Ground pin; the drawing also shows the top-side tab numbered 2.
3	EN	input	Enable input, active high: VEN high level is 1.6V to 18V and low level is 0V to 0.5V.
4	VIN	power_in	Input supply, operating range 2.2V to 18V (absolute maximum 20V).
5	VOUT	power_out	Regulated 3.3V output for MD7219E33, up to 1A, with ±2% accuracy.

Key specifications

Parameter	Value
Manufacturer	Shanghai Mingda Microelectronics
Package	SOT-89-5L
Category	Power Management (PMIC)
Pins	5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Input Voltage (absolute maximum)	VIN	-0.3		20	V		3
Storage Temperature	Tstg	-40		125	℃		3
Operating Ambient Temperature	Topr	-40		85	℃		3
ESD Protection	ESD HBM			4000	V	HBM	3
Power Dissipation (SOT89-5L)	PD			1000	mW		3
Output Voltage	VOUT(S)	0.98		1.02	V	VIN= VOUT(S)+2V, IOUT=1mA; min/max printed as multiples of VOUT(S)	4
Dropout Voltage	VDROP		3	8	mV	VOUT(S)=3.3V, IOUT=1mA	4
Dropout Voltage	VDROP		900	1300	mV	VOUT(S)=3.3V, IOUT=1A	4
Line Regulation			0.01	0.02	%/V	VOUT(S)+2V≤VIN≤18V, IOUT=1mA	4
Temperature Stability		-50		50	ppm/℃	VIN = VOUT(S)+2V, IOUT=1mA, -40℃≤Ta≤125℃	4
GND Current (no load, VOUT(S)≤5.0V)	IGND		14	30	µA	no load, VOUT(S)≤5.0V	4
Shutdown Current	ISHUT		0.1	1	µA	VIN=18V, VEN=0	4
Input Voltage	VIN	2.2		18	V		4
EN 'H' Level Voltage	VENH	1.6		18	V		4
EN 'L' Level Voltage	VENL	0		0.5	V		4
EN 'H' Level Current	IENH	-0.1		0.1	µA	VIN=18V, VEN=VIN	4
EN 'L' Level Current	IENL	-0.1		0.1	µA	VIN=18V, VEN=0	4
Load Regulation	VOUT2		80		mV	VIN=VOUT(S)+2V, 1mA≤IOUT≤1A, VOUT(S)≤5.0V	4
GND Current (IOUT=100mA)	IGND		420		µA	IOUT=100mA	4
Maximum Output Current	IOUTMAX		1		A		4
Current Limit	ILIM		1.35		A	VIN= VOUT(S)+2V, VOUT = 0.95 ×VOUT(S)	4
Power Supply Rejection Ratio	PSRR		72		dB	f=10Hz, IOUT=10mA	4
Power Supply Rejection Ratio	PSRR		80		dB	f=100Hz, IOUT=10mA	4
Power Supply Rejection Ratio	PSRR		75		dB	f=1kHz, IOUT=10mA	4
Short Circuit Current	ISHORT		40		mA	VIN=VEN=VOUT(S)+2.0V, VOUT=0V	4
Over Temperature Protection	OTP		150		℃	IOUT=1mA	4
Thermal Resistance (SOT89-5L)	RθJA		100		℃/W		3

CAD (KiCad official)

Symbol: MD7219E33PC1
Footprint: Package_TO_SOT_SMD:SOT-89-5
3D model: SOT-89-5L (KiCad packages3D, STEP)
3D model files: md7219e33pc1-etched.step / md7219e33pc1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md7219e33pc1.step / md7219e33pc1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Shanghai Mingda Microelectronics datasheet (15 pp, sha256 0052f2803aae3218, retrieved 2026-10-22, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF