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Asahi Kasei Microdevices/AKM AP1154ADL33
- Part No.:
- AP1154ADL33
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Package:
- 8-SOIC (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
AP1154ADL33.pdf
- Description:
- IC REG LINEAR 3.3V 1A 8HSOP
- Quantity:
- Payment:
- Shipping:
Inventory:427
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Product details
Overview
AP1154ADL33 from Asahi Kasei Microdevices is a 3.3 V, 1 A low-dropout linear regulator in HSOP-8 package with ON/OFF control, ±1.5% output voltage accuracy, 160 mV dropout at 500 mA, and programmable current limiting via external resistor. It supports USB power delivery (500 mA) and integrates thermal shutdown, short-circuit protection, and reverse-bias overcurrent protection.
For engineers reviewing the AP1154ADL33 datasheet, AP1154ADL33 pinout, AP1154ADL33 application, or AP1154ADL33 equivalent, this page delivers verified electrical specs, thermal behavior across -40°C to +85°C, stability guidance for 1 μF ceramic output capacitors, and real-world load/line transient response data per JEDEC JESD78.
Technical Context
The AP1154ADL33 employs a monolithic bipolar LDO architecture with internal reference trimming and active pass transistor control. Its dropout voltage remains stable across temperature (160–385 mV at 500 mA, -40°C to +85°C), and its quiescent current stays low (320–624 μA) even under no-load conditions.
ON/OFF control is high-active (VCONT ≥ 1.8 V = ON), with built-in 500 kΩ pull-down. Output current limit is set externally via RPCL-to-GND resistor (100 Ω to 10 kΩ), enabling precise peak current tuning from ~150 mA to 1400 mA at VIN = VOUT(typ) + 1 V and TA = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300 V (±1.5% or ±50 mV tolerance; trimmed during production) |
| Max Output Current | 1 A continuous; peak up to 1400 mA before thermal foldback |
| Dropout Voltage | 160 mV at 500 mA (25°C); ≤385 mV across full operating temperature range |
| Input Voltage Range | 2.4 V to 14.0 V - supports wide-input industrial and automotive supply rails |
| Ripple Rejection | 80 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Quiescent Current | 320 μA typical at IOUT = 0 mA - enables low-power standby modes |
| Thermal Shutdown | Activates at ~145°C junction temperature; auto-recovery on cooldown |
Pinout & Package
AP1154ADL33 uses the HSOP-8 surface-mount package (high heat radiation, 52°C/W θJA on standard PCB), optimized for space-constrained applications requiring thermal robustness without heatsinks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | No Connect (NC) | Not internally bonded; must remain unconnected per datasheet |
| 2 | VOUT | Main regulated output; requires ≥1 μF ceramic capacitor to GND (≥2.2 μF if VOUT < 2.4 V) |
| 3 | PCL | Programmable current limit terminal; connect external resistor to GND to set IOUT,PEAK (100–10 kΩ → 150–1400 mA) |
| 4 | GND | Power ground reference; low-impedance return path for load and internal protection circuits |
| 6 | VCONT | High-active enable input; ≥1.8 V = ON, ≤0.35 V = OFF; includes 500 kΩ internal pull-down |
| 7 | VIN | Unregulated input; requires ≥1 μF ceramic capacitor to GND for stability |
| 8 | NC | No Connect - not bonded; leave floating or unpopulated |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ESR capacitor support | Stable with 1 μF ceramic output cap - eliminates need for tantalum or electrolytic |
| Programmable current limit | External resistor sets precise IOUT,PEAK threshold - avoids overdesigning current-limiting circuitry |
| Reverse bias protection | Blocks reverse current flow when VIN = 0 V and VOUT > 0 V - prevents backfeeding into source |
| Low-noise operation | Optimized for sensitive analog/RF subsystems - measured output noise specified in datasheet |
| Thermal robustness | HSOP-8 package with enhanced thermal pad design - dissipates 2400 mW at TA = 25°C |
Applications
| Power Supply for Low-Voltage MPU | Digital AV System Power |
|---|---|
Use Scenario: Regulating 3.3 V rail for ARM Cortex-M microcontrollers and associated peripherals (SPI flash, sensors, UART transceivers). IC Role / Device Role / Timing Role: Primary post-regulation LDO delivering clean, stable 3.3 V with fast load transient response (<25 μs recovery). Use Value: Enables reliable MCU boot and runtime operation under dynamic load changes while maintaining ±1.5% output accuracy. | Use Scenario: Powering audio DACs, video decoders, and HDMI interface ICs in set-top boxes and media players. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO supplying critical analog and digital core supplies. Use Value: 80 dB ripple rejection at 1 kHz suppresses switching noise from upstream DC/DC, preserving SNR in audio/video signal chains. |
| USB Peripheral Power | Industrial Control Module |
Use Scenario: Providing compliant 500 mA @ 3.3 V to USB-connected peripherals (HID devices, serial adapters) with current limiting. IC Role / Device Role / Timing Role: Programmable-current LDO acting as USB port power switch with overcurrent fault signaling. Use Value: External RPCL resistor allows exact 500 mA current limit - meets USB 2.0 power delivery requirements without external sense resistors. | Use Scenario: Powering PLC I/O modules, sensor conditioners, and isolated communication interfaces in harsh environments. IC Role / Device Role / Timing Role: Industrial-grade LDO with -40°C to +85°C operation, reverse-bias protection, and thermal shutdown. Use Value: Reverse bias protection prevents damage during hot-swap or field wiring faults; thermal shutdown ensures fail-safe operation under overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP1154ADL33-E1 | Same silicon die and electrical specs; differs only in tape-and-reel packaging (E1 = 3000 pcs/reel vs standard bulk) | No functional difference; identical performance and pinout | Select for automated SMT assembly requiring reel packaging |
| Torex XC6219B332MR-G | 3.3 V, 1 A LDO in SOT-23-5; lower IQ (15 μA), but no PCL terminal or reverse bias protection | Lacks programmable current limit and reverse bias protection - unsuitable for USB or field-wirable systems | Choose only for ultra-low-power battery applications where protection features are unnecessary |
Compared with AP1154ADL33-E1, the AP1154ADL33 offers identical regulation performance with flexible packaging options; versus XC6219B332MR-G, AP1154ADL33 provides essential industrial protections (reverse bias, thermal, short-circuit) and programmable current limiting - critical for robust system-level power management.
Availability
AP1154ADL33 is available at Aetrix Electronics and suitable for industrial control modules, USB peripheral power supplies, and low-voltage MPU power rails requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for AP1154ADL33 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
Asahi Kasei Microdevices (AKM) is a Japanese semiconductor company specializing in analog, mixed-signal, and sensor ICs, with leadership in audio codecs, Hall-effect sensors, and precision power management.
The AP1154ADLXX series was designed for space-constrained, thermally demanding applications requiring high-accuracy, programmable LDOs with integrated protection - targeting industrial, consumer AV, and embedded computing markets.
FAQ
What is the guaranteed output voltage tolerance for AP1154ADL33 across temperature?
The AP1154ADL33 guarantees ±1.5% output voltage accuracy (±49.5 mV at 3.3 V) over the full operating temperature range of -40°C to +85°C, as confirmed in Table 3 of the datasheet. This includes line and load regulation effects, ensuring stable 3.3 V delivery under varying input and load conditions without external trimming.
Can AP1154ADL33 operate with a 1 μF output capacitor at 3.3 V output?
Yes - the AP1154ADL33 is explicitly characterized and guaranteed stable with a 1.0 μF ceramic output capacitor at VOUT = 3.3 V. Section 11.8 confirms stable operation down to 0.47 μF, and the recommended minimum is 1.0 μF for VOUT ≥ 2.4 V, making AP1154ADL33 compatible with compact, low-ESR ceramic capacitors.
How does the PCL terminal function in AP1154ADL33, and what resistor value sets 500 mA current limit?
The PCL terminal in AP1154ADL33 accepts an external resistor to GND to program the output current limit. Per Figure 22 and Section 11.7, a 2.2 kΩ resistor sets IOUT,PEAK ≈ 500 mA at VIN = VOUT(typ) + 1 V and TA = 25°C. The AP1154ADL33 datasheet provides a full RPCL vs. IOUT,PEAK curve for precise tuning.
Does AP1154ADL33 include reverse current protection, and how is it implemented?
Yes - AP1154ADL33 integrates reverse bias overcurrent protection. When VIN = 0 V and VOUT > 0 V (e.g., backfeed from downstream circuitry), the device limits reverse current to ≤1.5 μA (max) at VREV = VOUT(typ), preventing damage to upstream sources and ensuring safe hot-swap operation.
What is the thermal shutdown threshold and recovery behavior of AP1154ADL33?
The AP1154ADL33 activates thermal shutdown at approximately 145°C junction temperature and automatically recovers once TJ falls below the hysteresis threshold (~135°C). This behavior is documented in Section 11.9 and validated by the 2400 mW power dissipation rating at TA = 25°C with derating of 19.2 mW/°C above ambient.
AP1154ADL33 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Series:
- -
- Package/Case:
- 8-SOIC (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 14V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.67V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 624 µA
- Current - Supply (Max):
- 1.8 mA
- PSRR:
- 80dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HSOP
AP1154ADL33 FAQ
1.How can I place an order for AP1154ADL33 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1154ADL33 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 AP1154ADL33 reliable?
The price and inventory of AP1154ADL33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1154ADL33 is usually 5 days.
3.What payment methods are accepted for AP1154ADL33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1154ADL33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1154ADL33?
AP1154ADL33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1154ADL33 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 AP1154ADL33?
For technical support, including AP1154ADL33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1154ADL33 requirements.
6.How does Aetrix verify that AP1154ADL33 is sourced from the original manufacturer or authorized distributors?
All AP1154ADL33 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 AP1154ADL33 meets industry standards.
7.What is the process for return or replacement of AP1154ADL33?
All AP1154ADL33 units undergo pre-shipment inspection (PSI). If there is an issue with AP1154ADL33, 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 AP1154ADL33 part is unused and in its original packaging.
Return procedure for AP1154ADL33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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