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LMZ14203HTZ

Voltage Regulators - DC DC Switching RegulatorsTO-PMOD

IC REG BUCK 3A 30V TO-PMOD-7

LMZ14203HTZ is a 6V to 42V input, 3A output step-down DC-DC switching regulator module in TO-PMOD package, featuring integrated shielded inductor, 5V minimum output voltage, and multiple protection functions.Checked against the datasheet

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Technical parameters

Key specs

Input voltage6 ~ 42 V

Output voltage5 V

Output current3 AMax

Switching frequency1 MHz

Datasheet-verified parameters

19 items

Parameter	Value and test conditions	Source
Input Voltage Range	Min: 6 V, Max: 42 V
Output Voltage	As low as 5 V (Adjustable)
Output Current	Up to 3 A
Switching Frequency	Adjustable up to 1 MHz
Package	TO-PMOD (7), 10.16 mm × 9.85 mm
Operating Junction Temperature	Min: -40 °C, Max: 125 °C
RoHS	Yes
Absolute Maximum Ratings (VIN, RON to GND)	Min: -0.3 V, Max: 43.5 V
Absolute Maximum Ratings (Junction Temperature)	Max: 150 °C
Storage Temperature	Min: -65 °C, Max: 150 °C
EN Threshold Trip Point	Min: 1.10 V, Typ: 1.18 V, Max: 1.25 V (VEN rising, TJ = -40°C to 125°C)
SS Source Current	Min: 8 μA, Typ: 10 μA, Max: 15 μA (VSS = 0 V, TJ = -40°C to 125°C)
Current Limit Threshold	Min: 3.2 A, Typ: 4.7 A, Max: 5.5 A (DC average, TJ = -40°C to 125°C)
Input UVLO	Typ: 3.75 V (EN pin floating, VIN rising)
Junction-to-ambient Thermal Resistance	16 °C/W (4 layer PCB, 7.62 cm x 7.62 cm, 1-oz copper, no air flow)
Efficiency	Up to 97%
Protection Features	Thermal shutdown, Input UVLO, Output OVP, Short-circuit protection, Output current limit
Internal Inductor	10 μH
Peak Reflow Case Temperature	Max: 245 °C (30 s)

All parameters (8)ExpandCollapse

Power
Output Current	3 A
Output Voltage	as low as 5 V
AC and DC characteristics
Switching Frequency	up to 1 MHz
Environment and package
Body Size (NOM)	10.16 mm × 9.85 mm
Operation Junction Temperature	-40 °C to 125 °C
Package	TO-PMOD (7)
Other
Efficiency	up to 97%
VIN	6 V to 42 V

Pinout and package

PackageTO-PMOD (7), 10.16 mm × 9.85 mm

Pin	Name	Function
1	VIN	- Power Supply input, additional external input capacitance required between this pin and the exposed pad (EP)
2	RON	- ON-time resistor, external resistor from VIN to this pin sets the ON-time and frequency, typical values 100k to 700k ohms
3	EN	- Enable, input to the precision enable comparator, rising threshold is 1.18 V
4	GND	- Ground, reference point for all stated voltages, must be externally connected to EP
5	SS	- Soft-Start, internal 8-μA current source charges an external capacitor to produce the soft-start function
6	FB	- Feedback, internally connected to the regulation, overvoltage, and short-circuit comparators, regulation reference point is 0.8 V, connect feedback resistor divider to set output voltage
7	VOUT	- Output Voltage, output from the internal inductor, connect the output capacitor between this pin and the EP
EP	EP	- Exposed Pad, internally connected to pin 4, used to dissipate heat, must be electrically connected to pin 4 external to the package

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DatasheetDatasheet · 872.2 KB · 2026-10-29

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