Is there a pin-compatible replacement for TPMP1470GJ-Z?

Yes, several parts like ETA8110S2G and ETA8120S2G are available in the same SOT23-6 package with an identical pinout. However, they are not drop-in replacements due to differences in electrical parameters like input voltage or switching frequency, which require engineering review.

What risks should I check before replacing TPMP1470GJ-Z?

Before replacing TPMP1470GJ-Z, you must verify the candidate's input voltage range meets your system's needs. Also, check the switching frequency; a mismatch will require changing the inductor and capacitor values to ensure stability and performance. Always review the candidate's datasheet.

TPMP1470GJ-Z Alternatives, Datasheet & Cross Reference | TECH PUBLIC

The TPMP1470GJ-Z is a 2A, 18V synchronous buck converter. While no direct drop-in replacement is confirmed, several pin-compatible alternatives in the same SOT23-6 package are available, requiring review of key electrical parameters.

AI replacement insight

Electrical riskmedium

Differences in Vin(min) and switching frequency require careful verification.

Package risklow

Multiple candidates share the same SOT23-6 package and pinout.

Firmware risklow

These are simple regulators with no firmware interaction.

Can it be replaced directly?

No direct drop-in replacement has been identified. While several parts are pin-compatible, they have key electrical differences requiring circuit review.

Best replacement path

Use ETA8120S2G if your application's input voltage is always above 4.5V. Otherwise, use ETA8110S2G but be prepared to change external components.

Main risk

The primary risks are mismatches in minimum input voltage and switching frequency, which can cause system failure or require redesign of passive components.

Recommended alternatives

Pin-compatible alternative with matching current and frequency, but a more restrictive input voltage range.

View details

Alternative comparison matrix

Feature / factor	TPMP1470GJ-Z	ETA8120S2G	ETA8110S2G	ETA8103S2G	Compatibility / risk
Package	SOT23-6	SOT23-6	SOT23-6	SOT23-6	SOT23-6 — Pinout is identical.; ETA8110S2G: Pinout is identical.; ETA8103S2G: Pinout is identical.
Voltage	3.5 V to 18 V	4.5 V to 18 V	3.5 V to 18 V	4 V to 18 V	4.5 V to 18 V / 3.5 V to 18 V / 4 V to 18 V — Minimum input voltage is higher.; ETA8110S2G: Input voltage range matches.; ETA8103S2G: Minimum input voltage is higher.
Current	2 A	2 A	2 A	3 A	2 A / 3 A — Output current matches.; ETA8110S2G: Output current matches.; ETA8103S2G: Higher output current capability.
Switching Frequency	600 kHz	600 kHz	1 MHz	1 MHz	600 kHz / 1 MHz — Switching frequency matches.; ETA8110S2G: Higher frequency requires recalculation of external L/C components.; ETA8103S2G: Higher frequency requires recalculation of external L/C components.

Application & sourcing insights

Questions & answers

The best alternative depends on your design constraints. ETA8120S2G is a strong choice if your input voltage stays above 4.5V, as it matches the current and frequency. If you need the full 3.5V-18V input range, ETA8110S2G is a good option, but you must redesign external components for its 1MHz switching frequency.