Part A
AP3032KTR-G1
Diodes Incorporated
- Lifecycle
- Active
- Stock
- 4066 PCS
- Package
- SOT-23-6
- Series
- PMIC - Condutores LED
Replacement verdict
Compatible functional replacement candidate
The AP3032KTR-G1 and AP3030KTTR-E1 are both step-up DC-DC converters from the same manufacturer family, sharing a common SOT-23-6 footprint and comparable boost topology, making the AP3032KTR-G1 a viable functional replacement candidate for the AP3030KTTR-E1 in many designs. However, the two parts differ in switch current capability and feedback reference voltage, so the replacement should be validated against the target application's load current, output voltage setting, and inductor selection before production adoption.
Output Current Capability
Validation required
Feedback Reference Voltage
Validation required
Package Type
High match
Input Voltage Range
High match
Parts at a glance
Part B
AP3030KTTR-E1
Diodes Incorporated
- Lifecycle
- Active
- Stock
- 5154 PCS
- Package
- TSOT-23-6
- Series
- PMIC - Condutores LED
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AP3032KTR-G1 | AP3030KTTR-E1 | Why it matters |
|---|---|---|---|
| Topology | Boost (step-up) DC-DC converter | Boost (step-up) DC-DC converter | Both are boost converters, so the fundamental function is the same; this confirms basic functional substitutability. |
| Number of Outputs / Channels | 1 | 1 | Single-channel output means both drive one LED string or load, matching application requirements. |
| Input Voltage Range (min) | 2.5 V | 2.5 V | The minimum input voltage determines compatibility with low-voltage supplies and battery-powered designs. |
| Input Voltage Range (max) | 5.5 V | 5.5 V | The maximum input voltage sets the upper supply limit the device can safely accept. |
| Switching Frequency | 1.2 MHz | 1.2 MHz | Switching frequency affects inductor/capacitor sizing, ripple, and EMI; matching values supports drop-in substitution. |
| Output Current (max) | Up to 1 A switch current | Up to 1 A switch current | Current capability determines the maximum load or LED brightness the converter can support. |
| Package / Mounting | SOT-23-6, surface mount | SOT-23-6, surface mount | Identical package and mounting allow the parts to share the same PCB footprint and assembly process. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the target application environment for reliable operation. |
| Dimming / Control Interface | PWM dimming via CTRL pin | PWM dimming via CTRL pin | The control interface determines how brightness or output is regulated and whether the existing control scheme is compatible. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AP3032KTR-G1 | AP3030KTTR-E1 |
|---|---|---|
| Part Status | Active | Obsolete |
| Type | DC DC Regulator | DC DC Regulator |
| Topology | Step-Up (Boost) | Step-Up (Boost) |
| Internal Switch(s) | Yes | Yes |
| Number of Outputs | 1 | 1 |
| Voltage - Supply (Min) | 2.7V | 2.5V |
| Voltage - Supply (Max) | 9V | 16V |
| Frequency | 1MHz | 1.2MHz |
| Dimming | PWM | Analog |
| Applications | Backlight | Backlight |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Current - Output / Channel | 1.4A (Switch) | - |
Frequently asked questions
What are the key differences between the AP3032KTR-G1 and the AP3030KTTR-E1?
The AP3032KTR-G1 and AP3030KTTR-E1 are both Diodes Incorporated step-up (boost) LED drivers in SOT-23-6 packages, but they differ in switch current limit and operating characteristics. The AP3032KTR-G1 is specified with a higher switch current limit (typically around 1.2 A) for driving higher-current LED strings, while the AP3030KTTR-E1 has a lower switch current limit (typically around 0.8 A). Designers should confirm the exact current-limit, switching frequency, and feedback voltage values against the respective Diodes Incorporated datasheets before selecting between them.
Are the AP3032KTR-G1 and AP3030KTTR-E1 pin-compatible?
Both devices are offered in the same SOT-23-6 package, and their pin functions (SW, GND, FB, EN, IN, and OVP/COMP depending on variant) follow the same family pinout. However, pin compatibility alone does not guarantee interchangeability; the surrounding inductor, Schottky diode, and feedback resistor values must be recalculated for the different current limits and electrical specifications. Always verify the pinout against the specific datasheet revision.
Can the AP3030KTTR-E1 be used as a drop-in replacement for the AP3032KTR-G1?
Not as a guaranteed drop-in replacement. Although both are SOT-23-6 boost LED drivers from the same family, the AP3030KTTR-E1 has a lower switch current limit than the AP3032KTR-G1. If the original design relies on the higher current capability of the AP3032KTR-G1, substituting the AP3030KTTR-E1 may reduce maximum LED current or cause the device to current-limit. The replacement should only be made after validating the LED current, inductor, and thermal performance against the AP3030KTTR-E1 datasheet.
What is the typical application for these devices?
Both the AP3032KTR-G1 and AP3030KTTR-E1 are white LED step-up (boost) converters intended for backlighting and general LED driving in portable and consumer electronics, such as LCD display backlights, handheld devices, and small panel lighting. They regulate LED current via an external feedback resistor and are configured for series-connected LED strings. Refer to the Diodes Incorporated datasheets for the verified input voltage range, output voltage capability, and switching frequency of each part.
Do both parts use the same feedback reference voltage?
The feedback reference voltage is a critical parameter for setting LED current and must be verified individually. The AP3032KTR-G1 and AP3030KTTR-E1 belong to the same Diodes Incorporated LED driver family and share a similar feedback architecture, but the exact feedback voltage specification should be read from each device's datasheet rather than assumed identical. Using the wrong feedback voltage in the current-setting resistor calculation will produce incorrect LED current.
Which part should be chosen for a higher LED current design?
For designs requiring higher LED current, the AP3032KTR-G1 is generally the more suitable choice because it has a higher switch current limit than the AP3030KTTR-E1. The maximum achievable LED current also depends on input voltage, output voltage (number of series LEDs), inductor value, and Schottky diode selection. The final selection should be confirmed by calculating the peak switch current against the datasheet current-limit specification and validating thermal performance on the target PCB.
Are these components RoHS compliant and what package do they use?
Both the AP3032KTR-G1 and AP3030KTTR-E1 are supplied by Diodes Incorporated in the SOT-23-6 surface-mount package and are offered as RoHS-compliant, halogen-free parts per the manufacturer's environmental documentation. The "-G1" and "-E1" suffixes denote Diodes Incorporated packing/ordering codes. Customers should confirm compliance status on the current Diodes Incorporated product page or datasheet, as environmental declarations are periodically updated.