component

RT6576DGQW

Public Made by Adom

by adom

Richtek Tech DC-DC Converters, WQFN-20-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)rt6576dgqwfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Download PDF
Contents

README

markdown

RT6576DGQW

Richtek Tech · DC-DC Converters · WQFN-20-EP(3x3)

RT6576DGQW from Richtek Tech, in a WQFN-20-EP(3x3). 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 CS1 input Channel 1 current-limit setting input: a resistor to GND sets the threshold to 1/8 of the CS1 voltage over a 0.2V to 2V range, fed by an internal 10µA source from LDO5.
2 FB1 input Channel 1 feedback input: a resistive divider from VOUT1 to GND sets the output from 2V to 5.5V.
3 LDO3 power_out 3.3V linear regulator output that is always on when VIN is above the VINPOR threshold, rated up to 100mA.
4 FB2 input Channel 2 feedback input: a resistive divider from VOUT2 to GND sets the output from 2V to 4V.
5 CS2 input Channel 2 current-limit setting input: a resistor to GND sets the threshold to 1/8 of the CS2 voltage over a 0.2V to 2V range, fed by an internal 10µA source from LDO5.
6 EN2 input Channel 2 enable input with 1.6V minimum logic-high and 0.4V maximum logic-low thresholds.
7 PGOOD output Open-drain power-good output for Channel 1 and Channel 2 (logical AND) that requires a pull-up resistor and is released when both outputs are above 88% of nominal.
8 PHASE2 passive Channel 2 switch node that serves as the internal lower supply rail for the UGATE2 driver and as the Channel 2 current-sense input.
9 BOOT2 power_out Bootstrap supply for the Channel 2 high-side gate driver, connected to an external capacitor per the typical application circuit.
10 UGATE2 output Channel 2 high-side gate driver output that swings between PHASE2 and BOOT2.
11 LGATE2 output Channel 2 low-side gate driver output that swings between GND and LDO5.
12 VIN power_in Power input for the 5V and 3.3V LDO regulators and buck controllers, with a 5V to 25V recommended operating range and 30V absolute maximum.
13 LDO5 power_out 5V linear regulator output that also supplies the low-side MOSFET gate drivers and the analog circuitry, rated up to 100mA.
14 BYP1 power_in Switch-over source input for LDO5 that connects to the Channel 1 output, bypassing LDO5 once VOUT1 exceeds the 4.66V threshold.
15 LGATE1 output Channel 1 low-side gate driver output that swings between GND and LDO5.
16 UGATE1 output Channel 1 high-side gate driver output that swings between PHASE1 and BOOT1.
17 BOOT1 power_out Bootstrap supply for the Channel 1 high-side gate driver, connected to an external capacitor per the typical application circuit.
18 PHASE1 passive Channel 1 switch node that serves as the internal lower supply rail for the UGATE1 driver and as the Channel 1 current-sense input.
19 VCLK output Oscillator output for an external charge pump, operating at a typical 260kHz and driven from BYP1.
20 EN1 input Channel 1 enable input with 1.6V minimum logic-high and 0.4V maximum logic-low thresholds.
21 GND power_in Ground exposed pad that must be soldered to a large PCB and connected to GND for maximum power dissipation.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package WQFN-20-EP(3x3)
Category Power Management (PMIC)
Pins 21

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VIN Power-On Reset Rising Threshold VINPOR 4.6 4.9 V 7
VIN Power-On Reset Falling Threshold VINPOR 3.2 3.7 V 7
VIN Standby Supply Current (RT6576D) IVIN_SBY 80 100 µA Both Buck Controllers Off, VEN1 = VEN2 = GND 7
VIN Quiescent Current IVIN_nosw 15 25 µA Both Buck Controllers On, VFBx = 2.05V, VBYP1 = 5.05V 7
BYP1 Supply Current IBYP1_nosw 420 500 µA Both Buck Controllers On, VFBx = 2.05V, VBYP1 = 5.05V 7
FBx Valley Trip Voltage VFBx 1.98 2 2.02 V CCM Operation 7
BYP1 Discharge Current IDCHG_BYP1 10 45 mA VBYP1 = 0.5V 7
PHASEx Discharge Current IDCHG_LX 5 8 mA VPHASEx = 0.5V 7
Switching Frequency CH1 fSWx 240 300 360 kHz VIN = 20V, VOUT1 = 5V 7
Switching Frequency CH2 fSWx 280 355 430 kHz VIN = 20V, VOUT2 = 3.33V 7
Minimum Off-Time tOFF(MIN) 200 275 ns VFBx = 1.9V 7
Soft-Start Time tSSx 2 4.5 ms VOUTx Ramp-up Time 7
CSx Source Current ICSx 9 10 11 µA VCSx = 1V, VFBx = 1.9V 7
LDO5 Output Voltage VLDO5 4.9 5 5.1 V VIN = 12V, No Load 7
LDO5 Output Voltage VLDO5 4.8 5 5.1 V VIN > 7V, ILDO5 < 100mA 7
LDO5 Output Voltage VLDO5 4.5 4.75 5.1 V VIN > 5V, ILDO5 < 20mA 7
LDO3 Output Voltage VLDO3 3.267 3.3 3.333 V VIN = 12V, No Load 7
LDO3 Output Voltage VLDO3 3.217 3.3 3.383 V VIN > 7V, ILDO3 < 100mA 7
LDO5 Output Current ILDO5 100 175 mA VLDO5 = 4.5V, VBYP1 = GND, VIN = 7.4V 8
LDO3 Output Current ILDO3 100 175 mA VLDO3 = 3V, VIN = 7.4V 8
LDO5 Switch-over Equivalent Resistance RSW 1.5 3 Ω LDO5 to BYP1, 10mA 8
LDO5 UVLO Threshold Rising Edge VUVLO5 4.3 4.6 V Rising Edge 8
LDO5 UVLO Threshold Falling Edge VUVLO5 3.7 3.9 4.1 V Falling Edge 8
PGOOD Threshold VPGxTH 84 88 92 % PGOOD Detect, VFBx Rising Edge 8
PGOOD Leakage Current 1 µA High state, VPGOOD = 5.5V 8
PGOOD Output Low Voltage 0.3 V ISINK = 4mA 8
OVP Trip Threshold VOVP 109 113 117 % FBx with Respect to Internal Reference 8
UVP Trip Threshold VUVP 47 52 57 % UVP Detect, FBx Falling Edge 8
ENx Threshold Voltage Logic-High VENx_H 1.6 V SMPS On 8
ENx Threshold Voltage Logic-Low VENx_L 0.4 V SMPS Off 8
VIN to GND -0.3 30 V 6
BOOTx to GND -0.3 36 V DC 6
BOOTx to GND -5 42 V <100ns 6
BOOTx to PHASEx -0.3 6 V DC 6
BOOTx to PHASEx -5 7.5 V <100ns 6
PHASEx to GND -5 30 V DC 6
PHASEx to GND -10 42 V <100ns 6
UGATEx to GND -5 36 V DC 6
UGATEx to GND -10 42 V <100ns 6
UGATEx to PHASEx -0.3 6 V DC 6
UGATEx to PHASEx -5 7.5 V <100ns 6
LGATEx to GND -0.3 6 V DC 6
LGATEx to GND -5 7.5 V <100ns 6
Other Pins -0.3 6.5 V 6
Power Dissipation PD 3.33 W TA = 25°C, WQFN-20L 3x3 6
Junction Temperature 150 °C 6
Lead Temperature 260 °C Soldering, 10 sec. 6
Storage Temperature Range -65 150 °C 6
ESD Susceptibility HBM 2 kV HBM (Human Body Model) 6
Package Thermal Resistance Junction-to-Ambient θJA 30 °C/W WQFN-20L 3x3 6
Package Thermal Resistance Junction-to-Case θJC 7.5 °C/W WQFN-20L 3x3 6
Supply Voltage VIN 5 25 V 6
Junction Temperature Range -40 125 °C 6
Ambient Temperature Range -40 85 °C 6

CAD (KiCad official)

  • Symbol: RT6576DGQW
  • Footprint: Package_DFN_QFN:UQFN-20-1EP_3x3mm_P0.4mm_EP1.85x1.85mm
  • 3D model: WQFN-20-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: rt6576dgqw-etched.step / rt6576dgqw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt6576dgqw.step / rt6576dgqw.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (22 pp, sha256 7f62ce8acae8f459, retrieved 2026-10-20, 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