component

DS6521BFD33

Public Made by Adom

by adom

DSTECH Battery Management, DFN-10L(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ds6521bfd33factory-2.0.0extractor-text

Verified DS6521BFD33

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 11 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: DS6521BFD33 · DFN-10L(3x3) · 11 pins
  • ✓copper: 11 copper pads, none touching another net
  • ✓datasheet: all 11 pin names found in the 15-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-o7rrp9q2/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 11 pins = 11 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 11 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ds6521bfd33.kicad_sym✓ ds6521bfd33.kicad_mod✓ ds6521bfd33.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2d ago
viewers ds6521bfd33: viewers · Ray 2d ago
ds6521bfd33-etched.glb Publish 0.1.0 · Ray 2d ago
ds6521bfd33-etched.step ds6521bfd33: factory component page (tier=lcsc) · Ray 2d ago
ds6521bfd33-hero.glb ds6521bfd33: hero GLB from the etched model (keeps the MPN mark) · Ray 2d ago
ds6521bfd33-hero.overlay.json Publish 0.1.0 · Ray 2d ago
ds6521bfd33.glb Publish 0.1.0 · Ray 2d ago
ds6521bfd33.kicad_mod Publish 0.1.0 · Ray 2d ago
ds6521bfd33.kicad_sym Publish 0.1.0 · Ray 2d ago
ds6521bfd33.lbr Publish 0.1.0 · Ray 2d ago
ds6521bfd33.step Publish 0.1.0 · Ray 2d ago
package.json Publish 0.1.0 · Ray 2d ago
page.json Set visibility: public · Ray 2d ago
README.md Publish 0.1.0 · Ray 2d ago
verification.json Verified: Published by the parts factory: tier lcsc, 11 pins · Ray 2d ago

DS6521BFD33

DSTECH · Battery Management · DFN-10L(3x3)

DS6521BFD33 from DSTECH, in a DFN-10L(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 TS input Connects to the battery pack's temperature-sensing thermistor (25°C NTC, 10K or 100K).
2 ISET passive Programs the fast-charge current; an external resistor from ISET to GND sets the fast-charge current value.
3 GND power_in Ground.
4 VIN power_in Input supply voltage, recommended 4.5V to 24V (28V absolute max).
5 VCC power_out Internal regulator output; a 0.1uF to 1uF capacitor to ground is recommended.
6 IMIN passive Programs the charge termination current; an external resistor from IMIN to GND sets the termination current value.
7 BAT power_out Battery connection, may also connect to the system load; recommended bypass capacitor 10uF to 22uF.
8 TEM output Open-drain output: low (FET on) indicates charge current is below the termination current, open (FET off) indicates it is above.
9 CHG output Open-drain output: low (FET on) indicates charging, open (FET off) indicates not charging or charge complete.
10 EN input Chip enable input; high threshold 1.5V rising, low threshold 0.4V falling.
11 PGND power_in Exposed pad, chip substrate; leave floating or connect directly to ground.

Key specifications

Parameter Value
Manufacturer DSTECH
Package DFN-10L(3x3)
Category Power Management (PMIC)
Pins 11

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 voltage (recommended) VIN 4.5 24 V 4
Application junction temperature range -40 125 oC 4
Application ambient temperature range -40 85 oC 4
VIN / EN / CHG / TEM to GND -0.3 28 V 4
BAT to GND -0.3 15 V 4
Other pins to GND -0.3 6 V 4
Storage temperature range -60 150 oC 4
Junction temperature (absolute maximum) 150 oC 4
Lead soldering temperature 260 oC Soldering, 10 sec. 4
ESD HBM 2 KV HBM 4
ESD MM 200 V MM 4
Thermal resistance junction-to-ambient, DFN3x3-10L θJA 70 oC /W TA = 25°C, DSTECH EVB board (Note 2) 4
Input voltage VIN 4.5 24 V 5
Input overvoltage protection threshold VOVP 6 V VIN Rising 5
Input overvoltage protection hysteresis VOVP_HYS 0.2 V 5
Input supply current, charge mode IQA 350 μA EN = High, VIN = 5V, no load on OUT terminal 5
Input standby current IQS 80 μA EN = 0V, VIN = 5V 5
Reverse battery current (BAT pin inflow) IRBAT 800 μA VBAT = -4.2V 5
EN high threshold voltage VIH 1.5 V EN Rising 5
EN low threshold voltage VIL 0.4 V EN Falling 5
EN input current IEN 10 100 nA VEN = 5V 5
Battery output voltage, Type B (4.35V) VBAT 4.31 4.35 4.39 V 5
Recharge battery voltage, Type B VBAT 4.125 V 5
Fast charge current ICHG 50 1000 mA RISET = KΩ 5
Fast charge current accuracy, ICHG > 100mA ICHG -10 10 % ICHG > 100mA 5
Fast charge current accuracy, ICHG < 100mA ICHG -10 10 mA ICHG < 100mA 5
Pre-charge current IPRE 10 % Percentage of ICHG 5
Termination (cut-off) charge current IMIN 5 100 mA RIMIN = KΩ 5
Termination current delay time TTEM 16.7 mS IMIN to CHG 5
Temperature regulation threshold TJ(REG) 125 °C 5
Thermal shutdown temperature TJ_OFF 155 °C 5

CAD (KiCad official)

  • Symbol: DS6521BFD33
  • Footprint: Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm
  • 3D model: DFN-10L(3x3) (KiCad packages3D, STEP)
  • 3D model files: ds6521bfd33-etched.step / ds6521bfd33-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ds6521bfd33.step / ds6521bfd33.glb are the bare package body.

Provenance

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

  • Datasheet: DSTECH datasheet (15 pp, sha256 e4ba68fabe077547, retrieved 2026-11-05, 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-sonnet-5-5 (text+vision), consensus claude-opus-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