component
HT5429AREZ
Public Made by Adomby adom
HTCSEMI DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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HT5429AREZ
HTCSEMI · DC-DC Converters · ESOP-8
HT5429AREZ from HTCSEMI, in a ESOP-8. 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 | GATE | output | Power-stage gate drive output that switches the external N-channel MOSFET. |
| 2 | SENS | input | The voltage between SENS and IN sets the input current limit through an external sense resistor, with a typical threshold of 57 mV. |
| 3 | IN | power_in | Input supply pin; the recommended operating supply is 3.0 V to 20 V, with an absolute maximum of 36 V. |
| 4 | SS | passive | Soft-start pin where an external capacitor to GND is charged by a 5 µA source, and leaving it open disables soft-start. |
| 5 | COMP | passive | Error-amplifier compensation pin, where a capacitor and resistor in series to GND stabilize the control loop. |
| 6 | VDD | power_out | Internal bias supply output that requires a 2.2 µF ceramic capacitor placed as close to the pin as possible. |
| 7 | FB | input | Feedback voltage input with a 1.25 V reference, connected to an external resistor divider. |
| 8 | EN | input | Enable pin where high turns the chip on and low turns it off, and it must not be left floating. |
| 9 | GND | power_in | Chip ground connected to the thermal pad of the ESOP8 package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage range | VIN | 3 | 22 | V | 3 | ||
| Input supply voltage | VIN | 3 | 20 | V | 2 | ||
| Output voltage | VOUT | 5 | 22 | V | 2 | ||
| EN bias current | EN | 0 | 0.3 | mA | 2 | ||
| Operating critical temperature | -40 | 125 | °C | 2 | |||
| IN, SENSE pin voltage | IN, SENSE | -0.5 | 36 | V | 2 | ||
| Other pins voltage | -0.3 | 6 | V | 2 | |||
| EN bias current | EN | 0.5 | mA | 2 | |||
| Junction temperature | 150 | °C | 2 | ||||
| Storage temperature | -65 | 150 | °C | 2 | |||
| VOUT-VIN differential | VOUT-VIN | 10 | V | 2 | |||
| Undervoltage lockout threshold | VUVLO | 2.9 | V | VIN Rising | 3 | ||
| UVLO hysteresis | ΔVUVLO | 200 | mV | 3 | |||
| VDD voltage | VDD | 4.75 | 5 | 5.25 | V | C=10nF, VIN=12V, -40℃<T<85℃ | 3 |
| Shutdown current | ISD | 0.8 | μA | VEN = 0V | 3 | ||
| Quiescent current | IQ | 660 | μA | VFB = 1.4V | 3 | ||
| Switching frequency | FREQ | 650 | kHz | 3 | |||
| Minimum off time | TON | 100 | ns | VFB = 0V | 3 | ||
| Minimum on time | TOFF | 100 | ns | VFB = 1.4V | 3 | ||
| EN high turn-on threshold | EN-ON | 1.584 | 1.7 | V | VEN Rising (switching) | 3 | |
| EN low threshold | EN-OFF | 0.5 | V | VEN Falling | 3 | ||
| Soft-start current | SS | 5.1 | μA | 3 | |||
| FB threshold voltage | VFB | 1.23 | 1.25 | 1.27 | V | 3 | |
| FB bias current | IFB | -100 | nA | 3 | |||
| Thermal shutdown | TSD | 150 | ℃ | 3 | |||
| Input current limit | ICL | 11.4 | A | RSENSE=5m | 3 | ||
| Input current limit | ICL | 5.7 | A | RSENSE=10m | 3 | ||
| Input current limit threshold | VCL | 57 | mV | VIN-SENS | 3 | ||
| Input current limit time | TCL | 500 | μs | 3 |
CAD (KiCad official)
- Symbol:
HT5429AREZ - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
ht5429arez-etched.step/ht5429arez-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht5429arez.step/ht5429arez.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTCSEMI datasheet (8 pp, sha256
925c355fc4bd463a, retrieved 2026-10-27, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# HT5429AREZ
**HTCSEMI** · DC-DC Converters · ESOP-8
HT5429AREZ from HTCSEMI, in a ESOP-8. 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 | GATE | output | Power-stage gate drive output that switches the external N-channel MOSFET. |
| 2 | SENS | input | The voltage between SENS and IN sets the input current limit through an external sense resistor, with a typical threshold of 57 mV. |
| 3 | IN | power_in | Input supply pin; the recommended operating supply is 3.0 V to 20 V, with an absolute maximum of 36 V. |
| 4 | SS | passive | Soft-start pin where an external capacitor to GND is charged by a 5 µA source, and leaving it open disables soft-start. |
| 5 | COMP | passive | Error-amplifier compensation pin, where a capacitor and resistor in series to GND stabilize the control loop. |
| 6 | VDD | power_out | Internal bias supply output that requires a 2.2 µF ceramic capacitor placed as close to the pin as possible. |
| 7 | FB | input | Feedback voltage input with a 1.25 V reference, connected to an external resistor divider. |
| 8 | EN | input | Enable pin where high turns the chip on and low turns it off, and it must not be left floating. |
| 9 | GND | power_in | Chip ground connected to the thermal pad of the ESOP8 package. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage range | VIN | 3 | | 22 | V | | 3 |
| Input supply voltage | VIN | 3 | | 20 | V | | 2 |
| Output voltage | VOUT | 5 | | 22 | V | | 2 |
| EN bias current | EN | 0 | | 0.3 | mA | | 2 |
| Operating critical temperature | | -40 | | 125 | °C | | 2 |
| IN, SENSE pin voltage | IN, SENSE | -0.5 | | 36 | V | | 2 |
| Other pins voltage | | -0.3 | | 6 | V | | 2 |
| EN bias current | EN | | | 0.5 | mA | | 2 |
| Junction temperature | | | | 150 | °C | | 2 |
| Storage temperature | | -65 | | 150 | °C | | 2 |
| VOUT-VIN differential | VOUT-VIN | | | 10 | V | | 2 |
| Undervoltage lockout threshold | VUVLO | | 2.9 | | V | VIN Rising | 3 |
| UVLO hysteresis | ΔVUVLO | | 200 | | mV | | 3 |
| VDD voltage | VDD | 4.75 | 5 | 5.25 | V | C=10nF, VIN=12V, -40℃<T<85℃ | 3 |
| Shutdown current | ISD | | 0.8 | | μA | VEN = 0V | 3 |
| Quiescent current | IQ | | 660 | | μA | VFB = 1.4V | 3 |
| Switching frequency | FREQ | | 650 | | kHz | | 3 |
| Minimum off time | TON | | 100 | | ns | VFB = 0V | 3 |
| Minimum on time | TOFF | | 100 | | ns | VFB = 1.4V | 3 |
| EN high turn-on threshold | EN-ON | 1.584 | | 1.7 | V | VEN Rising (switching) | 3 |
| EN low threshold | EN-OFF | | 0.5 | | V | VEN Falling | 3 |
| Soft-start current | SS | | 5.1 | | μA | | 3 |
| FB threshold voltage | VFB | 1.23 | 1.25 | 1.27 | V | | 3 |
| FB bias current | IFB | | -100 | | nA | | 3 |
| Thermal shutdown | TSD | | 150 | | ℃ | | 3 |
| Input current limit | ICL | | 11.4 | | A | RSENSE=5m | 3 |
| Input current limit | ICL | | 5.7 | | A | RSENSE=10m | 3 |
| Input current limit threshold | VCL | | 57 | | mV | VIN-SENS | 3 |
| Input current limit time | TCL | | 500 | | μs | | 3 |
## CAD (KiCad official)
- Symbol: `HT5429AREZ`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `ht5429arez-etched.step` / `ht5429arez-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ht5429arez.step` / `ht5429arez.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HTCSEMI datasheet](docs/ht5429arez-datasheet.pdf) (8 pp, sha256 `925c355fc4bd463a`, retrieved 2026-10-27, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/ht5429arez-datasheet.pdf)