component
MAX16993ATJA
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Analog Devices Inc Maxim Integrated DC-DC Converters, TQFN-32-EP(5x5). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownMAX16993ATJA
Analog Devices Inc Maxim Integrated · DC-DC Converters · TQFN-32-EP(5x5)
MAX16993ATJA from Analog Devices Inc Maxim Integrated, in a TQFN-32-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PV1 | power_in | Supply input for Buck 1 low-side gate drive. Bypass to GND with ≥0.1µF ceramic capacitor. Range -0.3V to +6.0V. |
| 2 | DL1 | output | Low-side gate-drive output for Buck 1. Swings from GND to VPV1 (~5V). |
| 3 | GND | power_in | Power ground for Buck 1 driver stage. Tie to the system ground plane along with PGND2, PGND3, and EP. |
| 4 | LX1 | passive | Buck 1 inductor / switching node. Connect to the switched side of the external inductor; also serves as the return rail for the DH1 high-side driver. Range -6.0V to VSUP+6.0V. |
| 5 | DH1 | output | High-side gate-drive output for Buck 1. Swings from VLX1 to VBST1 (bootstrapped ~5V above LX1). |
| 6 | BST1 | passive | Bootstrap capacitor connection for the Buck 1 high-side gate drive. Connect a high-voltage diode from BIAS to BST1 and a ceramic capacitor between BST1 and LX1. BST1-LX1 range -0.3V to +6.0V. |
| 7 | VSUP | power_in | Main high-voltage supply input. Operating range 3.5V to 36V continuous (42V load-dump). Bypass with ≥0.1µF close to the pin. |
| 8 | EN1 | input | High-voltage-tolerant active-high digital enable for Buck 1. Drive high to enable OUT1. Rated -0.3V to +45V. |
| 9 | BIAS | power_out | 5V internal LDO output that powers the internal circuitry. Bypass to GND with ≥2.2µF low-ESR ceramic. Typ 5.0V (4.6V-5.4V). |
| 10 | PV | power_in | Analog supply. Connect to BIAS through a ~10Ω resistor and to GND through a 1µF ceramic capacitor. |
| 11 | FB1 | input | Buck 1 feedback input. In fixed-output variants tie FB1 to BIAS or GND to select factory-trimmed voltage; in adjustable option (ordered here) connect a resistor divider from OUT1, regulated to 1.0V (typ). |
| 12 | CS1 | input | Positive current-sense input for Buck 1. Connect to the positive terminal of the external current-sense resistor. Current-limit threshold VCS1-VOUT1 = 120mV typ. |
| 13 | OUT1 | input | Buck 1 output-voltage sense and negative current-sense input. Connect to the negative terminal of the sense resistor / OUT1 rail; also powers/references PV2 and PV3 in the cascaded topology. |
| 14 | EN2 | input | Active-high digital enable input for Buck 2. Drive high to enable OUT2. |
| 15 | EN3 | input | Active-high digital enable input for Buck 3. Drive high to enable OUT3. |
| 16 | OUT3 | input | Buck 3 output voltage-sense input. In adjustable mode (this option) connect through a resistor divider from VOUT3. |
| 17 | RESET3 | output | Open-drain Buck 3 reset output. Asserted low while VOUT3 is out of regulation and for the programmed active timeout after regulation. Pull up to a rail ≤5V. |
| 18 | PV3 | power_in | Buck 3 power input. Connect to OUT1 with a ≥2.2µF ceramic capacitor to PGND3. Range -0.3V to +6.0V. |
| 19 | LX3 | passive | Buck 3 switching node (drain of internal HS/LS FETs). High impedance when Buck 3 is disabled. |
| 20 | PGND3 | power_in | Power ground return for the Buck 3 internal FETs. Must be within ±0.3V of GND. |
| 21 | PGND2 | power_in | Power ground return for the Buck 2 internal FETs. Must be within ±0.3V of GND. |
| 22 | LX2 | passive | Buck 2 switching node (drain of internal HS/LS FETs). High impedance when Buck 2 is disabled. |
| 23 | PV2 | power_in | Buck 2 power input. Connect to OUT1 with a ≥2.2µF ceramic capacitor to PGND2. Range -0.3V to +6.0V. |
| 24 | RESET2 | output | Open-drain Buck 2 reset output. Asserted low until VOUT2 has been in regulation for the programmed active timeout. Pull up to a rail ≤5V. |
| 25 | OUT2 | input | Buck 2 output voltage-sense input. In adjustable mode (this option) connect through a resistor divider from VOUT2. |
| 26 | CSEL1 | input | Buck 1 clock select. Tie to GND for 2.1MHz operation; tie to BIAS for the OTP-programmed divide-down (e.g., 1.05MHz/525kHz/420kHz/350kHz per Selector Guide). |
| 27 | SSEN | input | Spread-spectrum enable. Tie to GND for a standard oscillator; tie to BIAS to enable ±3% (0 to +6%) spread-spectrum modulation of fSW. |
| 28 | RESET1 | output | Open-drain Buck 1 reset output. Asserted low until VOUT1 has been in regulation for the programmed active timeout. Pull up to a rail ≤5V. |
| 29 | GND | power_in | Analog ground reference for the controller and internal circuitry. |
| 30 | COMP1 | passive | Buck 1 error-amplifier compensation node. Connect an external R-C network to GND to set the loop response (see Compensation Network section). |
| 31 | ERR | output | Open-drain error-status output. Asserts low on a thermal-warning / thermal-shutdown event. Pull up to a rail ≤5V. |
| 32 | SYNC | input | External clock synchronization input. Leave open or tie to GND for skip-mode; tie to BIAS or drive with an external 1.7-2.4MHz clock for forced-PWM fixed-frequency operation. |
| 33 | EP | power_in | Exposed thermal pad on the package underside. Connect to the ground plane for heat removal. Does not replace the PGND2/PGND3/GND connections. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | TQFN-32-EP(5x5) |
| Category | Power Management (PMIC) |
| Pins | 33 |
Ordering variants
Same part, different packaging or reel option.
MAX16993ATJA+MAX16993ATJA/V+MAX16993ATJAAGJA/VY+
CAD (KiCad official)
- Symbol:
MAX16993ATJA - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: TQFN-32-EP(5x5) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (None pp, sha256
e7f77665b839feb1, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).