# ISL6545IBZ-T

**RENESAS** · DC-DC Converters · SOIC-8

ISL6545IBZ-T from RENESAS, in a SOIC-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 | BOOT | power_out | Provides the ground-referenced bootstrap bias for the upper MOSFET driver, equal to VCC minus the on-chip BOOT diode drop and referenced to PHASE, with VBOOT rated GND - 0.3V to 36V and VBOOT - VPHASE limited to 15V. |
| 2 | UGATE | output | Drives the gate of the upper MOSFET with the PWM-controlled output, and is monitored by the adaptive shoot-through protection; UGATE is rated VPHASE - 0.3V to VBOOT + 0.3V. |
| 3 | GND | power_in | Serves as the signal and power ground for the IC and should be tied to the ground plane through the lowest impedance connection available. |
| 4 | LGATE/OCSET | output | Drives the gate of the lower MOSFET from VCC and also sets the overcurrent threshold through a resistor ROCSET to GND during the short period after POR or shutdown release, with LGATE/OCSET rated GND - 0.3V to VCC + 0.3V. |
| 5 | VCC | power_in | Provides the bias supply for the controller, the lower gate driver and the BOOT voltage, with an operating supply of +5V ±10%, +12V ±20%, or 6.5V to 14.4V and an absolute maximum of GND - 0.3V to 15V. |
| 6 | FB | input | Serves as the inverting input of the internal error amplifier, with a resistor divider from the output to GND setting the regulation voltage, and is rated GND - 0.3V to 6V. |
| 7 | COMP/SD | bidirectional | Acts as the error amplifier output during soft-start and normal operation, and pulling it below the 0.4V nominal disable threshold shuts the controller down, with the pin rated GND - 0.3V to 6V. |
| 8 | PHASE | passive | Connects to the upper MOSFET source and lower MOSFET drain, serving as the UGATE driver sink and the overcurrent sense point, with PHASE rated GND - 0.3V to VBOOT + 0.3V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## 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 Bias Supply Current | IVCC |  | 4 | 7 | mA | VCC = 12V; disabled | 4 |
| Rising VCC POR Threshold | VPOR | 3.9 | 4.1 | 4.3 | V |  | 4 |
| VCC POR Threshold Hysteresis |  | 0.3 | 0.35 | 0.4 | V |  | 4 |
| Switching Frequency (ISL6545I) | fOSC | 240 | 300 | 330 | kHz | ISL6545I | 4 |
| Ramp Amplitude | VOSC |  | 1.5 |  | VP-P |  | 4 |
| Reference Voltage Tolerance (ISL6545I) |  | -1.5 |  | 1.5 | % | ISL6545I | 4 |
| Nominal Reference Voltage | VREF |  | 0.6 |  | V |  | 4 |
| DC Gain | GAIN |  | 96 |  | dB |  | 4 |
| Gain-Bandwidth Product | GBWP |  | 20 |  | MHz |  | 4 |
| Slew Rate | SR |  | 9 |  | V/µs |  | 4 |
| Upper Gate Source Impedance | RUG-SRCh |  | 3 |  |  | VCC = 14.5V; I = 50mA | 4 |
| Upper Gate Sink Impedance | RUG-SNKh |  | 2.7 |  |  | VCC = 14.5V; I = 50mA | 4 |
| Lower Gate Source Impedance | RLG-SRCh |  | 2.4 |  |  | VCC = 14.5V; I = 50mA | 4 |
| Lower Gate Sink Impedance | RLG-SNKh |  | 2 |  |  | VCC = 14.5V; I = 50mA | 4 |
| Upper Gate Source Impedance | RUG-SRCl |  | 3.5 |  |  | VCC = 4.25V; I = 50mA | 5 |
| Upper Gate Sink Impedance | RUG-SNKl |  | 2.7 |  |  | VCC = 4.25V; I = 50mA | 5 |
| Lower Gate Source Impedance | RLG-SRCl |  | 2.75 |  |  | VCC = 4.25V; I = 50mA | 5 |
| Lower Gate Sink Impedance | RLG-SNKl |  | 2.1 |  |  | VCC = 4.25V; I = 50mA | 5 |
| OCSET Current Source (ISL6545I) | IOCSET | 18 | 21.5 | 23.5 | µA | ISL6545I; LGATE/OCSET = 0V | 5 |
| Disable Threshold (COMP/SD pin) | VDISABLE | 0.375 | 0.4 | 0.425 | V |  | 5 |
| Supply Voltage | VCC | 6.5 |  | 14.4 | V | +5V ±10%, +12V ±20%, or 6.5V to 14.4V | 4 |
| Ambient Temperature Range (ISL6545I) | TA | -40 |  | 85 | °C | ISL6545I, ISL6545AI | 4 |
| Junction Temperature Range | TJ | -40 |  | 125 | °C |  | 4 |
| Supply Voltage | VCC | -0.3 |  | 15 | V | referenced to GND | 4 |
| BOOT Voltage | VBOOT | -0.3 |  | 36 | V | referenced to GND | 4 |
| Upper Driver Supply Voltage | VBOOT-VPHASE |  |  | 15 | V |  | 4 |
| FB, COMP/SD Voltage | VFB, VCOMP/SD | -0.3 |  | 6 | V | referenced to GND | 4 |
| PHASE Voltage (transient) | VPHASE | -8 |  | 30 | V | GND-8V (<400ns, 20µJ) to 30V (<200ns, VBOOT-GND<36V) | 4 |
| LGATE/OCSET Voltage (transient) | VLGATE/OCSET | -5 |  |  | V | GND-5V (<100ns Pulse Width, 2µJ) to VCC+0.3V | 4 |
| Human Body Model ESD | HBM |  |  | 1.5 | kV |  | 4 |
| Machine Model ESD | MM |  |  | 150 | V |  | 4 |
| Charged Device Model ESD | CDM |  |  | 1 | kV |  | 4 |
| Maximum Junction Temperature (Plastic Package) | TJ |  |  | 150 | °C |  | 4 |
| Maximum Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 4 |
| Thermal Resistance JA (SOIC package) | JA |  |  | 95 | °C/W | SOIC package, mounted on high effective thermal conductivity test board in free air | 4 |

## CAD (KiCad official)

- Symbol: `ISL6545IBZ-T`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `isl6545ibz-t-etched.step` / `isl6545ibz-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `isl6545ibz-t.step` / `isl6545ibz-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RENESAS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839219410833408) (17 pp, sha256 `be5cdd01ef0fd8ea`, retrieved 2026-10-18, tier: lcsc)
- **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/isl6545ibz-t-datasheet.pdf)