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L9780

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STMicroelectronics Power Management - Specialized, LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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L9780

STMicroelectronics · Power Management - Specialized · LQFP-48(7x7)

L9780 from STMicroelectronics, in a LQFP-48(7x7). 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 TG1 passive Switching TAG resistor pin for channel 1, connected to the VCCS TG switch between TG1 and OUT1.
2 SNS input VCCS sense pin; SNS may be driven from -VCCA to 40 V and has a design common-mode range of -2 V to 2.4 V.
3 TST1 input Test mode pin 1, rated for -0.3 V to 40 V.
4 INRC input Reference cell input, rated for -0.3 V to 40 V and protected by short-to-battery and short-to-ground diagnostics.
5 RCT1 passive Impedance test pin 1, rated for -0.3 V to 40 V.
6 RCT2 input Impedance test amplifier input, rated for -0.3 V to 40 V.
7 SR input Sensor return (functional ground), rated for -VCCA to 40 V and monitored by the short-to-battery diagnostic.
8 PG1 output Protection FET gate driver for channel 1, swinging between 0 and VCCA with a 70 kΩ to 130 kΩ pull-down.
9 PG2 output Protection FET gate driver for channel 2, swinging between 0 and VCCA with a 70 kΩ to 130 kΩ pull-down.
10 HD input Heater FET drain sense pin, rated for 0 V to 40 V (absolute maximum -0.3 V to 53 V) and used for heater diagnostics.
11 TST2 input Test mode pin 2, rated for -0.3 V to 40 V.
12 HG output Heater FET gate driver, swinging between 0 and VCCA with a 70 kΩ to 130 kΩ pull-down.
13 SY input Synchronous mode selection pin, rated for 0 V to VCCA.
14 PW input Heater PWM input pin, rated for 0 V to VCCA.
15 SO output SPI serial data output, referenced to the VCCI digital transfer level supply.
16 CLK input SPI clock input, rated for 0 V to VCCA.
17 SI input SPI serial data input, rated for 0 V to VCCA.
18 CSN input SPI chip select input, rated for 0 V to VCCA.
19 VCCI power_in Digital transfer level supply, rated 3.14 V to 5.1 V in operation.
20 GNDD power_in Digital ground.
21 VCCD power_in Digital supply, rated 4.9 V to 5.1 V in operation.
22 n.c. unconnected Not connected pin.
23 n.c. unconnected Not connected pin.
24 n.c. unconnected Not connected pin.
25 C1B passive Compensation network pin 1, side B, rated for -0.3 V to VCCA+0.3 V.
26 C2B passive Compensation network pin 2, side B, rated for -0.3 V to VCCA+0.3 V.
27 C3 passive Compensation network common pin, rated for -0.3 V to VCCA+0.3 V.
28 C2A passive Compensation network pin 2, side A, rated for -0.3 V to VCCA+0.3 V.
29 C1A passive Compensation network pin 1, side A, rated for -0.3 V to VCCA+0.3 V.
30 FV passive VCCS filtered control voltage pin, rated for -0.3 V to VCCA+0.3 V.
31 FVOUT output Analog output of the FVOUT amplifier, rated for -0.3 V to VCCA+0.3 V.
32 BG passive Bandgap voltage reference pin, rated for -0.3 V to VCCA+0.3 V.
33 CL2 input VCCS voltage clamp channel 2, rated for -0.3 V to VCCA+0.3 V.
34 CL1 input VCCS voltage clamp channel 1, rated for -0.3 V to VCCA+0.3 V.
35 n.c. unconnected Not connected pin.
36 n.c. unconnected Not connected pin.
37 VCCCP power_in Charge pump supply, rated 4.9 V to 5.1 V in operation.
38 FLCP1 passive Charge pump floating pin 1, rated for -0.3 V to VCCCP+0.3 V.
39 FLCP2 passive Charge pump floating pin 2, rated for CP-0.3 V to +0.3 V.
40 GNDCP power_in Charge pump analog ground.
41 CP power_out -5 V charge pump output, rated for -6.5 V to +0.3 V.
42 VESD power_in ESD reference voltage, rated at 40 V in operation (absolute maximum 53 V).
43 GNDA power_in Analog ground.
44 VCCA power_in Analog supply, rated 4.9 V to 5.1 V in operation.
45 n.c. unconnected Not connected pin.
46 TG2 passive Switching TAG resistor pin for channel 2, connected to the VCCS TG switch between TG2 and OUT2.
47 OUT2 output Pump cell output for channel 2, driven by the VCCS with RTOT between 50 Ω and 300 Ω.
48 OUT1 output Pump cell output for channel 1, driven by the VCCS with RTOT between 50 Ω and 300 Ω.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category Power Management (PMIC)
Pins 48

CAD (KiCad official)

  • Symbol: L9780
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: l9780-etched.step / l9780-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l9780.step / l9780.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (56 pp, sha256 bf560dfa5f013e54, retrieved 2026-10-11, tier: manufacturer)
  • 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