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Diodes Incorporated AP2132MP-1.8TRG1
- Part No.:
- AP2132MP-1.8TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP2132MP-1.8TRG1.pdf
- Description:
- IC REG LINEAR POS ADJ 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,634
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Product details
Overview
AP2132MP-1.8TRG1 from Diodes Incorporated is a 2A, 1.8V fixed-output CMOS low-dropout (LDO) voltage regulator in PSOP-8 package with thermal pad, featuring 300mV dropout at 2A, ±2% output voltage accuracy, power-good (PG) signal, and enable control. It operates from 1.4V input and supports notebook, portable computing, and point-of-load regulation where stable low-voltage rail generation is critical.
For engineers reviewing the AP2132MP-1.8TRG1 datasheet, AP2132MP-1.8TRG1 pinout, AP2132MP-1.8TRG1 application, or AP2132MP-1.8TRG1 equivalent, key selection criteria include dropout performance at full load, PG assertion threshold (92% VOUT), EN logic thresholds, thermal resistance (θJC = 40°C/W), and PSOP-8 thermal pad layout compliance.
Technical Context
The AP2132MP-1.8TRG1 integrates a precision 0.6V reference, error amplifier, PMOS pass transistor, current-limit circuit, thermal shutdown (165°C), and open-drain PG output. Its internal resistor network fixes VOUT to 1.8V without external components-ADJ pin is grounded per specification.
VCTRL pin accepts 4.5–5.5V for biasing internal control circuitry independently of VIN; EN enables/disables regulation with 1.5V high-threshold and 0.4V low-threshold; PG asserts high when VOUT reaches ≥92% of nominal 1.8V (i.e., ≥1.656V) with 7% hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% (±36mV) over -40°C to +85°C ambient |
| Max Output Current | 2A continuous; limited by thermal design and 300mV dropout at full load |
| Dropout Voltage | 300mV @ IOUT = 2A, VOUT = 1.8V - enables operation from 2.1V input rail |
| Power Good Threshold | 92% of 1.8V = 1.656V with 7% hysteresis - ensures reliable system power sequencing |
| Supply Current | 300µA typical quiescent current - minimizes no-load power loss in battery systems |
| PSRR | 60dB @ 100Hz/1kHz - suppresses ripple from upstream switching regulators |
| Thermal Resistance | θJC = 40°C/W - requires thermal pad soldering for sustained 2A operation |
Pinout & Package
AP2132MP-1.8TRG1 uses the PSOP-8 package with exposed thermal pad (pin 8 GND and pad both serve as thermal and electrical ground). The package measures 4.7mm × 6.2mm × 1.27mm and requires specific PCB pad layout per Diodes' recommended footprint (E = 1.27mm pitch, thermal pad = 3.9mm × 2.7mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PG) | Open-drain Power Good output | Asserts high when VOUT ≥ 1.656V; requires external pull-up for logic-level interface |
| 2 (EN) | Active-high enable input | Drives regulator ON when ≥1.5V; <0.4V disables output and reduces IQ to standby level |
| 3 (VIN) | Main input supply | Accepts 1.4V–5.5V; must be decoupled with ≥10µF ceramic capacitor near pin |
| 4 (VCTRL) | Bias voltage input | Supplies 4.5–5.5V to internal control circuitry; independent of VIN for stable operation |
| 5 (NC) | No-connect terminal | Not internally bonded; must remain unconnected on PCB |
| 6 (VOUT) | Regulated output | Delivers 1.8V ±2% up to 2A; requires ≥10µF output capacitance for stability |
| 7 (ADJ) | Internal voltage divider tap | Internally grounded for 1.8V fixed mode; not used externally in this variant |
| 8 (GND) | Power and signal ground | Primary ground return; thermal pad must be soldered to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 300mV @ 2A enables use with 2.1V input sources like Li-ion single-cell or buck-boost outputs |
| Integrated power-good signaling | PG output eliminates need for external supervisor IC in power sequencing-critical systems |
| Enable-controlled startup/shutdown | EN pin allows precise system-level power gating with <0.4V logic-low disable threshold |
| Robust protection suite | Includes overcurrent limit, thermal shutdown (165°C), and hysteresis (20°C) for safe fault recovery |
| Thermally optimized PSOP-8 | Exposed thermal pad and θJC = 40°C/W support 2A operation with minimal heatsinking |
Applications
| Notebook Core Voltage Regulation | Portable SSD Power Rail |
|---|---|
|
Use Scenario: Supplies 1.8V core voltage to Intel/AMD mobile CPU I/O domains or DDR memory termination. IC Role / Device Role / Timing Role: Primary LDO delivering clean, sequenced 1.8V rail with PG confirmation before memory initialization. Use Value: 300mV dropout allows direct regulation from 2.1V intermediate bus, reducing conversion stages and BOM count. |
Use Scenario: Powers NAND flash controller and DRAM cache in M.2 NVMe SSD modules. IC Role / Device Role / Timing Role: Fixed-output LDO providing stable 1.8V under dynamic 0–2A load transients during read/write bursts. Use Value: 60dB PSRR at 1kHz suppresses switching noise from main 3.3V DC-DC converter, preventing data corruption. |
| Industrial PLC I/O Module | Medical Handheld Diagnostic Device |
|
Use Scenario: Generates isolated 1.8V supply for FPGA configuration I/O banks in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Enable-controlled LDO enabling firmware-triggered power cycling of peripheral interfaces. Use Value: EN logic thresholds compatible with 3.3V microcontroller GPIO, eliminating level-shifter requirement. |
Use Scenario: Powers low-power sensor interface ASIC and BLE radio in battery-operated ultrasound probe. IC Role / Device Role / Timing Role: Low-quiescent (300µA) LDO extending runtime while maintaining PG-synchronized boot sequence. Use Value: ±2% output accuracy ensures consistent ADC reference scaling across temperature, critical for diagnostic precision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2202K-1.8TRG1 | 150mA max output, SOT-25 package, no PG output, higher dropout (500mV @ 150mA) | Suitable only for ultra-low-power logic rails; lacks PG and thermal capability for 2A loads | Select only if load current ≤150mA and PG signaling is unnecessary. |
| Torex XC6210B182MR-G | 2A output, SOT-89-5 package, no VCTRL pin, PG threshold 90% VOUT, θJA = 120°C/W | Requires larger PCB area for thermal management; lacks independent VCTRL for bias stability | Prefer when board space permits SOT-89-5 and VCTRL independence is not required. |
Compared with AP2202K-1.8TRG1 and XC6210B182MR-G, the AP2132MP-1.8TRG1 uniquely combines 2A capability, integrated PG, low 300mV dropout, and dedicated VCTRL biasing-enabling robust, space-efficient 1.8V regulation in thermally constrained, high-reliability systems.
Availability
AP2132MP-1.8TRG1 is available at Aetrix Electronics and suitable for notebook power delivery, portable SSD subsystems, industrial PLC I/O modules, and medical handheld diagnostics requiring stable component supply and RoHS-compliant green packaging.
Supply support for AP2132MP-1.8TRG1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP2132 series belongs to Diodes' high-current LDO portfolio, designed specifically for low-noise, high-accuracy point-of-load regulation in space-constrained portable and embedded systems demanding tight voltage tolerance and fast transient response.
FAQ
What is the minimum input voltage required for AP2132MP-1.8TRG1 to regulate 1.8V at 2A?
The absolute minimum input voltage is 2.1V: VOUT (1.8V) + VDROP (300mV) = 2.1V. Per datasheet, VIN must be ≥1.4V, but full 2A regulation requires VIN ≥ VOUT + 300mV. Operation below 2.1V results in dropout and unregulated output.
Can the ADJ pin be left floating in the AP2132MP-1.8TRG1 fixed-output version?
No. For the 1.8V fixed version, the ADJ pin must be grounded per datasheet Internal Mode definition. Floating ADJ may cause undefined output voltage or instability, as the internal resistor divider requires a solid GND reference to set 1.8V accurately.
Is the thermal pad on the PSOP-8 package electrically connected to GND?
Yes. The exposed thermal pad is internally connected to pin 8 (GND) and must be soldered to the PCB ground plane. It serves both thermal dissipation and electrical grounding functions; omitting pad connection degrades θJA by >50% and risks thermal shutdown under 2A load.
Does the PG output require an external pull-up resistor, and what value is recommended?
Yes. PG is open-drain and requires an external pull-up to a logic-compatible voltage (e.g., 1.8V or 3.3V). Diodes recommends 10kΩ to balance speed (<1µs rise time) and current draw (<0.33mA at 3.3V); values <4.7kΩ increase power, >100kΩ slow response and risk noise susceptibility.
AP2132MP-1.8TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V (1.8V)
- Voltage - Output (Max):
- 3V
- Voltage Dropout (Max):
- 0.45V @ 2A
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- 300 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz ~ 1kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AP2132MP-1.8TRG1 FAQ
1.How can I place an order for AP2132MP-1.8TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2132MP-1.8TRG1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP2132MP-1.8TRG1 reliable?
The price and inventory of AP2132MP-1.8TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2132MP-1.8TRG1 is usually 5 days.
3.What payment methods are accepted for AP2132MP-1.8TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2132MP-1.8TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2132MP-1.8TRG1?
AP2132MP-1.8TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2132MP-1.8TRG1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP2132MP-1.8TRG1?
For technical support, including AP2132MP-1.8TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2132MP-1.8TRG1 requirements.
6.How does Aetrix verify that AP2132MP-1.8TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2132MP-1.8TRG1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP2132MP-1.8TRG1 meets industry standards.
7.What is the process for return or replacement of AP2132MP-1.8TRG1?
All AP2132MP-1.8TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2132MP-1.8TRG1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP2132MP-1.8TRG1 part is unused and in its original packaging.
Return procedure for AP2132MP-1.8TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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