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MAX1721EUT+T

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Analog Devices Inc Maxim Integrated Charge Pumps, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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MAX1721EUT+T

Analog Devices Inc Maxim Integrated · Charge Pumps · SOT-23-6

MAX1721EUT+T from Analog Devices Inc Maxim Integrated, in a SOT-23-6. 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 OUT power_out Inverting charge-pump output that is not regulated and droops toward GND as load current rises (output resistance about 23Ω at room temperature with VIN = +5V), is actively pulled to ground in shutdown, and is rated for 25mA continuous output current with a 100mA absolute maximum OUT current.
2 IN power_in Power-supply positive voltage input specified for +1.5V to +5.5V, with an absolute maximum IN-to-GND range of -0.3V to +6V.
3 C1- passive Negative terminal of the flying capacitor, with an absolute maximum C1- to GND range of (VOUT - 0.3V) to +0.3V.
4 GND power_in Ground reference pin for the device.
5 SHDN input Inverting shutdown input for the MAX1721: drive high for normal operation and low for shutdown, where OUT is actively pulled to ground; the SHDN/SHDN absolute range is -0.3V to (VIN + 0.3V).
6 C1+ passive Positive terminal of the flying capacitor, with an absolute maximum C1+ to GND range of -0.3V to (VIN + 0.3V).

Key specifications

Parameter Value
Manufacturer Analog Devices Inc Maxim Integrated
Package SOT-23-6
Category Power Management (PMIC)
Pins 6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage Range VIN 1.5 5.5 V TA = 0°C to +85°C 2
Supply Voltage Range VIN 1.6 5.5 V TA = -40°C to +85°C, MAX1719/MAX1721 3
Output Current, continuous long-term IOUT 25 mARMS Continuous, long-term 3
Voltage Conversion Efficiency 99 99.9 % IOUT = 5mA 2
Voltage Conversion Efficiency 99 % 3
Oscillator Frequency fOSC 70 125 180 kHz TA = 0°C to +85°C 2
Oscillator Frequency fOSC 60 200 kHz TA = -40°C to +85°C 3
Quiescent Supply Current ICC 350 650 µA IOUT = 0 2
Quiescent Supply Current ICC 750 µA IOUT = 0 3
Shutdown Supply Current ISHDN 0.001 1 µA SHDN = GND (MAX1721), OUT forced to GND in shutdown 2
SHDN/SHDN Bias Current IIL, IIH -100 0.05 100 nA SHDN/SHDN = GND or VIN 2
SHDN/SHDN Input Logic Low VIL 0.2 V VIN(MIN) ≤ VIN ≤ +2.5V 2
SHDN/SHDN Input Logic Low VIL 0.6 V +2.5V ≤ VIN ≤ +5.5V 2
SHDN/SHDN Input Logic High VIH 2 V +2.5V ≤ VIN ≤ +5.5V 2
Output Resistance RO 23 50 Ω RL = 10kΩ 2
Output Resistance RO 65 Ω 3
Shutdown Resistance RO, SHDN 4 12 Ω OUT to GND 2
Shutdown Resistance RO, SHDN 12 Ω OUT to GND 3
IN to GND -0.3 6 V 2
OUT to GND -6 0.3 V 2
C1+, SHDN, SHDN to GND -0.3 V to GND; upper limit printed as VIN + 0.3V 2
C1- to GND 0.3 V to GND; lower limit printed as VOUT - 0.3V 2
OUT Output Current 100 mA 2
Operating Temperature Range TA -40 85 °C 2
Junction Temperature TJ 150 °C 2
Storage Temperature Range TSTG -65 150 °C 2
Lead Temperature 300 °C soldering, 10s 2

CAD (KiCad official)

  • Symbol: MAX1721EUT+T
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: max1721eut-t-etched.step / max1721eut-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max1721eut-t.step / max1721eut-t.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices Inc Maxim Integrated datasheet (8 pp, sha256 295872db0ab30660, retrieved 2026-10-17, 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