component

NDP23A5QB

Public Made by Adom

by adom

NDP DC-DC Converters, QFN-20-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NDP23A5QB

NDP · DC-DC Converters · QFN-20-EP(5x5)

NDP23A5QB from NDP, in a QFN-20-EP(5x5). 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 GND power_in Ground pin; the datasheet's pin table assigns pins 1, 2 and 3 together with exposed pad PAD1 to GND.
2 GND power_in Ground pin; the datasheet's pin table assigns pins 1, 2 and 3 together with exposed pad PAD1 to GND.
3 GND power_in Ground pin; the datasheet's pin table assigns pins 1, 2 and 3 together with exposed pad PAD1 to GND.
4 NC unconnected Listed as no connect in the pin table, although the layout note says pin 4 is connected to VIN or GND.
5 NC unconnected Listed as no connect in the pin table, although the layout note says pin 5 is connected to VIN or GND.
6 VIN power_in Power input with a 7.5 V to 30 V input voltage range; VIN to GND absolute maximum is -0.3 V to 33 V.
7 VIN power_in Power input with a 7.5 V to 30 V input voltage range; VIN to GND absolute maximum is -0.3 V to 33 V.
8 VIN power_in Power input with a 7.5 V to 30 V input voltage range; VIN to GND absolute maximum is -0.3 V to 33 V.
9 NC unconnected Not connected.
10 BST passive Boot strap pin for the high-side switch drive; BST to GND is rated -0.3 V to VIN+7 V.
11 NC unconnected Not connected.
12 SW power_out Switching node connected to the inductor; SW to GND is rated -0.3 V to VIN+0.3 V.
13 SW power_out Switching node connected to the inductor; SW to GND is rated -0.3 V to VIN+0.3 V.
14 SW power_out Switching node connected to the inductor; SW to GND is rated -0.3 V to VIN+0.3 V.
15 NC unconnected Not connected.
16 FB input Output voltage feedback input compared with the internal 1.0 V reference; FB to GND is rated -0.3 V to 6.5 V.
17 CSP input Positive pole of the current sense amplifier; CSP to GND is rated -0.3 V to 25 V.
18 CSN input Negative pole of the current sense amplifier; CSP-CSN sense voltage is 21 mV min, 25 mV typ, 29 mV max.
19 EN input Enable input with internal pull-up; enable-on threshold is 1 V and enable-off threshold is 0.3 V.
20 FS input Connect a resistor to GND to set switching frequency; FS to GND is rated -0.3 V to 6.5 V.
21 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer NDP
Package QFN-20-EP(5x5)
Category Power Management (PMIC)
Pins 21

CAD (KiCad official)

  • Symbol: NDP23A5QB
  • Footprint: Package_DFN_QFN:QFN-20-1EP_5x5mm_P0.65mm_EP3.35x3.35mm
  • 3D model: QFN-20-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: ndp23a5qb-etched.step / ndp23a5qb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ndp23a5qb.step / ndp23a5qb.glb are the bare package body.

Provenance

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

  • Datasheet: NDP datasheet (14 pp, sha256 4e99169d88d6f3f5, retrieved 2026-10-10, 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