component
MD7533H
Public Made by Adomby adom
Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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
markdownMD7533H
Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
MD7533H from Shanghai Mingda Microelectronics, in a SOT-89-3. 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 terminal (接地端) of the MD75XXH regulator; the datasheet gives no separate electrical limit for this pin. |
| 2 | VDD | power_in | Power input (电源输入端); the absolute maximum input voltage VIN is 32 V, the maximum operating input voltage Vmax is 30 V, and the datasheet states the output is held in regulation up to 30 V input. |
| 3 | VOUT | power_out | Regulated output (输出端); the absolute maximum output voltage is Vss-0.3 V to VIN+0.3 V, and VOUT must not be driven more than 0.3 V above VIN, and a 2.2 µF or larger output capacitor (tantalum recommended) is required between VOUT and GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | VOUT | 3.201 | 3.3 | 3.399 | V | VIN= 5.3V，IOUT=10mA | 3 |
| Output current | IOUT | 120 | mA | VIN= 5.3V | 3 | ||
| Input-output voltage difference (Vdrop) | Vdrop | 5 | 10 | mV | IOUT=1mA | 3 | |
| Input-output voltage difference (Vdrop) | Vdrop | 60 | 100 | mV | IOUT=10mA | 3 | |
| Input stability | ΔVOUT/(ΔVIN·VOUT) | 0.05 | 0.2 | ％/V | 4.3V≤VIN≤30V, IOUT=1mA | 3 | |
| Load stability | ΔVOUT2 | 60 | 100 | mV | VIN=5.3V, 1.0mA≤IOUT≤100mA | 3 | |
| Output voltage temperature coefficient | ΔVOUT/(ΔTa·VOUT) | 50 | 100 | ppm/℃ | VIN=5.3V，IOUT=10mA, -40℃≤Ta≤85℃ | 3 | |
| Quiescent current | ISS | 1.2 | 5 | uA | VIN=30V, no load | 3 | |
| Input voltage | Vmax | 30 | V | 3 | |||
| Output short-circuit current | Ishort | 180 | mA | Vout=0V | 3 | ||
| Overvoltage protection | OVP | 37 | V | IOUT=1mA | 3 | ||
| Input voltage (absolute maximum) | VIN | 32 | V | 2 | |||
| Allowable power dissipation | PD | 500 | mW | SOT-89 package | 2 | ||
| Operating ambient temperature range | Topr | -40 | 85 | ℃ | 2 | ||
| Storage ambient temperature range | Tstg | -40 | 125 | ℃ | 2 | ||
| Input capacitor | CIN | 1 | µF | 6 | |||
| Output capacitor (tantalum) | CL | 2.2 | µF | tantalum capacitor | 6 | ||
| Output capacitor (aluminum electrolytic) | CL | 10 | µF | aluminum electrolytic capacitor | 6 | ||
| Output capacitor ESR range | ESR | 0.5 | 5 | Ω | approximate appropriate range, output capacitor | 7 |
CAD (KiCad official)
- Symbol:
MD7533H - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
md7533h-etched.step/md7533h-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md7533h.step/md7533h.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (15 pp, sha256
33161ff733e26ee1, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).