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NDP13701QB
Public Made by Adomby adom
NDP DC-DC Converters, QFN-20(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownNDP13701QB
NDP · DC-DC Converters · QFN-20(5x5)
NDP13701QB from NDP, in a QFN-20(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 of the exposed-pad group PAD1; connect to system ground. |
| 2 | GND | power_in | Ground pin of the exposed-pad group PAD1; connect to system ground. |
| 3 | GND | power_in | Ground pin of the exposed-pad group PAD1; connect to system ground. |
| 4 | NC | unconnected | No internal connection; the layout note says pins 4 and 5 may be tied to VIN or GND for easier layout. |
| 5 | NC | unconnected | No internal connection; the layout note says pins 4 and 5 may be tied to VIN or GND for easier layout. |
| 6 | VIN | power_in | Power input of the exposed-pad group PAD2; VIN range is 7.5 V to 30 V with an absolute maximum of -0.3 V to 33 V to GND. |
| 7 | VIN | power_in | Power input of the exposed-pad group PAD2; VIN range is 7.5 V to 30 V with an absolute maximum of -0.3 V to 33 V to GND. |
| 8 | VIN | power_in | Power input of the exposed-pad group PAD2; VIN range is 7.5 V to 30 V with an absolute maximum of -0.3 V to 33 V to GND. |
| 9 | NC | unconnected | No internal connection. |
| 10 | BST | power_out | Boot-strap pin for the high-side driver; connect a resistor of 0-10 Ω (4.7 Ω typ) and 100 nF from BST to SW, with BST to GND rated -0.3 V to VIN+7 V. |
| 11 | NC | unconnected | No internal connection. |
| 12 | SW | output | Switching node of the exposed-pad group PAD3, connected to the inductor; SW to GND rated -0.3 V to VIN+0.3 V. |
| 13 | SW | output | Switching node of the exposed-pad group PAD3, connected to the inductor; SW to GND rated -0.3 V to VIN+0.3 V. |
| 14 | SW | output | Switching node of the exposed-pad group PAD3, connected to the inductor; SW to GND rated -0.3 V to VIN+0.3 V. |
| 15 | NC | unconnected | No internal connection. |
| 16 | FB | input | Feedback input for the output voltage divider, regulated to the 1.0 V internal reference; FB to GND rated -0.3 V to 6.5 V. |
| 17 | CSP | input | Positive pole of the current-sense amplifier; CSP to GND rated -0.3 V to VIN, with the CSP-CSN current-sense voltage of 51-59 mV. |
| 18 | CSN1 | input | Negative pole 1 of the current-sense amplifier; CSN1 to GND rated -0.3 V to VIN. |
| 19 | CSN2 | input | Negative pole 2 of the current-sense amplifier; CSN2 to GND rated -0.3 V to VIN. |
| 20 | FS/EN | input | Connect a resistor to GND to set switching frequency, or float for 130 kHz; it also serves as enable with an internal 8 µA pull-up, and FS/EN to GND is rated -0.3 V to 6.5 V; below 0.3 V the part enters shutdown. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NDP |
| Package | QFN-20(5x5) |
| 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 to GND | VIN | -0.3 | 33 | V | VIN to GND | 4 | |
| SW to GND | -0.3 | V | Upper limit printed as VIN+0.3 V | 4 | |||
| BST to GND | -0.3 | V | Upper limit printed as VIN+7 V | 4 | |||
| FB, FS/EN to GND | -0.3 | 6.5 | V | FB, FS/EN to GND | 4 | ||
| CSP, CSN1, CSN2 to GND | -0.3 | V | Upper limit printed as VIN V | 4 | |||
| Operating Junction Temperature | TA | -40 | 150 | °C | 4 | ||
| Storage Junction Temperature | Tstg | -65 | 150 | °C | 4 | ||
| Input Voltage (VIN) | VIN | 8 | 24 | V | 4 | ||
| Output Voltage (VOUT) | VOUT | 3.3 | 20 | V | 4 | ||
| Maximum Duty Cycle (DMAX) | DMAX | 95 | 99 | % | 4 | ||
| Input Voltage | VIN | 7.5 | 30 | V | 5 | ||
| UVLO OFF Voltage | VUVLO_OFF | 6.8 | 7.1 | 7.5 | V | VIN Rising | 5 |
| UVLO ON Voltage | VUVLO_ON | 6 | 6.5 | 6.8 | V | VIN Falling | 5 |
| Standby Current | ISB | 1.7 | 2.2 | mA | No Load | 5 | |
| FB Reference Voltage | VREF | 0.98 | 1 | 1.02 | V | 5 | |
| Current Sense AMP VCS1 | VCS1 | 51 | 55 | 59 | mV | CSP-CSN1 | 5 |
| Current Sense AMP VCS2 | VCS2 | 51 | 55 | 59 | mV | CSP-CSN2 | 5 |
| Switching Frequency | FSW | 110 | 130 | 150 | kHz | FS Floating | 5 |
| Switching Frequency | FSW | 220 | 260 | 300 | kHz | R_FS=200kΩ | 5 |
| Enable On Voltage | VEN_ON | 0.68 | 0.7 | 1.5 | V | VEN Rising | 5 |
| Enable Off Voltage | VEN_OFF | 0.3 | 0.62 | 0.65 | V | VEN Falling | 5 |
| Output Current (IOUT) | IOUT | 7 | A | 4 | |||
| Quiescent Current | ICCQ | 1.3 | mA | VFB = 1.2V, No Switch | 5 | ||
| Enable Voltage | VEN | 1 | V | EN Floating | 5 | ||
| Enable Internal Pull Up Current | IEN | 8 | μA | 5 | |||
| Maximum Duty Cycle | 99 | % | 5 | ||||
| Minimum On-Time | 250 | ns | 5 | ||||
| Current Limit | ILIMIT | 10 | A | 5 | |||
| Hiccup Interval | THICCUP | 580 | ms | FS Floating | 5 | ||
| Soft Start Time | TSS | 5 | ms | 5 | |||
| RDSON of Power MOSFET (high side) | RDSON_H | 10 | mΩ | Temperature=25℃ | 5 | ||
| RDSON of Power MOSFET (low side) | RDSON_L | 10 | mΩ | Temperature=25℃ | 5 | ||
| Thermal shutdown Temperature | TSD | 165 | °C | 5 | |||
| Thermal Shutdown Hysteresis Temperature | TSH | 20 | °C | 5 | |||
| Thermal Resistance from Junction to Case | θJC | 15 | °C/W | 4 | |||
| Thermal Resistance from Junction to Ambient | θJA | 40 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
NDP13701QB - Footprint:
Package_DFN_QFN:QFN-20-1EP_5x5mm_P0.65mm_EP3.35x3.35mm - 3D model: QFN-20(5x5) (KiCad packages3D, STEP)
- 3D model files:
ndp13701qb-etched.step/ndp13701qb-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ndp13701qb.step/ndp13701qb.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NDP datasheet (15 pp, sha256
1b9d13346e5e1af4, retrieved 2026-10-18, tier: lcsc) - 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).