component
BQ25570RGRT
Public Made by Adomby adom
Texas Instruments Battery Management, VQFN-20-EP(3.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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.
README
markdownBQ25570RGRT
Texas Instruments · Battery Management · VQFN-20-EP(3.5x3.5)
BQ25570RGRT from Texas Instruments, in a VQFN-20-EP(3.5x3.5). 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 | VSS | power_in | Power ground for the boost charger. |
| 2 | VIN_DC | input | DC voltage input from the energy harvesting source, rated VIN(DC) 0.1 V to 5.1 V; connect at least a 4.7 µF capacitor as close as possible between this pin and pin 1. |
| 3 | VOC_SAMP | input | Sampling pin for the MPPT network: connect to VSTOR to sample at 80% of the input source open-circuit voltage, to GND for 50%, or to a resistor divider midpoint between VIN_DC and GND. |
| 4 | VREF_SAMP | input | Connect a 0.01-µF low-leakage capacitor from this pin to GND to store the voltage to which VIN_DC will be regulated, provided by the MPPT sample circuit. |
| 5 | EN | input | Active-low digital programming input for enabling or disabling the IC; connect to GND to enable the IC. |
| 6 | VOUT_EN | input | Active-high digital programming input for enabling or disabling the buck converter; connect to VSTOR to enable the buck converter. |
| 7 | VBAT_OV | input | Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VBAT overvoltage threshold. |
| 8 | VRDIV | output | High side of the resistor divider networks; connect to this biasing voltage. |
| 9 | NC | unconnected | Listed as NC in the pin table but the datasheet instructs connecting it to ground using the IC's PowerPAD. |
| 10 | OK_HYST | input | Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VBAT_OK hysteresis threshold; connect to GND if not used. |
| 11 | OK_PROG | input | Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VBAT_OK threshold; connect to GND if not used. |
| 12 | VOUT_SET | input | Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VOUT regulation set point. |
| 13 | VBAT_OK | output | Digital battery-good indicator output, internally referenced to the VSTOR voltage; leave floating if not used. |
| 14 | VOUT | output | Buck converter output; connect at least a 22 µF output capacitor between this pin and pin 15 (VSS). |
| 15 | VSS | power_in | Power ground for the buck converter and analog/signal ground for the resistor dividers and VREF_SAMP capacitor. |
| 16 | LBUCK | bidirectional | Inductor connection for the buck converter switching node; connect at least a 4.7 µH inductor between this pin and pin 14 (VOUT). |
| 17 | NC | unconnected | Listed as NC in the pin table but the datasheet instructs connecting it to ground using the IC's PowerPAD. |
| 18 | VBAT | power_in | Connect a rechargeable storage element with at least 100 µF of equivalent capacitance between this pin and either VSS pin. |
| 19 | VSTOR | output | Output of the boost charger; connect at least a 4.7 µF capacitor in parallel with a 0.1 µF capacitor as close as possible between this pin and pin 1 (VSS). |
| 20 | LBOOST | bidirectional | Inductor connection for the boost charger switching node; connect a 22 µH inductor between this pin and pin 2 (VIN_DC). |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-20-EP(3.5x3.5) |
| Category | Power Management (PMIC) |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
BQ25570RGRT - Footprint:
Package_DFN_QFN:QFN-20-1EP_3.5x3.5mm_P0.5mm_EP2x2mm - 3D model: VQFN-20-EP(3.5x3.5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
bq25570rgrt-etched.step/bq25570rgrt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bq25570rgrt.step/bq25570rgrt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (46 pp, sha256
87e66e0264e36d59, retrieved 2026-10-11, 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).