My Inquiry
My Account
Asahi Kasei Microdevices/AKM AP1154ADL18
- Part No.:
- AP1154ADL18
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Package:
- 8-SOIC (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
AP1154ADL18.pdf
- Description:
- IC REG LINEAR 1.8V 1A 8HSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1154ADL18 from Asahi Kasei Microdevices is a 1.8 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 limit via external resistor - designed for space-constrained MPU power supplies and USB-compliant 500 mA applications.
For engineers reviewing the AP1154ADL18 datasheet, AP1154ADL18 pinout, AP1154ADL18 application, or AP1154ADL18 equivalent, this page delivers verified electrical specs, thermal behavior across –40°C to +85°C, ceramic capacitor stability guidance (≥1 μF), and real-world current-limiting implementation using RPCL.
Technical Context
The AP1154ADL18 uses a monolithic bipolar structure with internal reference trimming and built-in disconnect circuitry for reverse-bias overcurrent protection. Its high-PSRR architecture achieves 80 dB ripple rejection at 1 kHz while maintaining stable regulation under load transients up to 1 A.
Control logic includes high-active ON/OFF functionality with internal 500 kΩ pull-down on Vcont, enabling clean enable sequencing. Thermal shutdown activates at ~145°C junction temperature, and power dissipation is derated linearly above 25°C (–19.2 mW/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.800 V (±1.5% or ±50 mV tolerance over –40°C to +85°C) |
| Max Output Current | 1 A continuous; peak current programmable up to 1.4 A via RPCL resistor |
| Dropout Voltage | 160 mV typical at 500 mA; 300 mV typical at 1 A (Ta = 25°C) |
| Ripple Rejection | 80 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Quiescent Current | 320 μA typical at zero load - enables low-power standby modes |
| Input Voltage Range | 2.4 V to 14.0 V - supports wide-input industrial and automotive supply rails |
| Operating Temp | –40°C to +85°C ambient - qualified for extended industrial environments |
Pinout & Package
HSOP-8 package with exposed thermal pad (high heat radiation design); 5.0 mm × 6.0 mm footprint, 1.0 mm height, gull-wing leads.
| 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 RPCL resistor to GND to set ILIM (100 Ω–10 kΩ range) |
| 4 | GND | Power ground reference; connects to PCB thermal pad for heat dissipation |
| 6 | Vcont | ON/OFF control input; high-active (≥1.8 V = ON; ≤0.35 V = OFF); internal 500 kΩ pull-down |
| 7 | Vin | Input supply terminal; requires ≥1 μF ceramic capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise operation | Enables use in noise-sensitive analog/RF subsystems without additional filtering |
| Reverse bias overcurrent protection | Prevents damage when Vin = 0 V and Vout > 0 V - critical for hot-swap and battery-backup systems |
| Thermal shutdown with auto-recovery | Halts output during overtemperature events and resumes once junction cools below threshold |
| Stable with 1 μF ceramic output cap | Reduces BOM count and board area vs. traditional LDOs requiring ≥10 μF tantalum |
| Wide input voltage range (2.4–14 V) | Eliminates need for pre-regulation in 12 V rail applications such as industrial controllers |
Applications
| Power Supply for Low-Voltage MPU | Digital AV System |
|---|---|
Use Scenario: Powering ARM Cortex-M series microprocessors and associated peripherals (SDRAM, flash, sensors) in compact embedded controllers. IC Role / Device Role / Timing Role: Primary 1.8 V core supply regulator with fast transient response and tight DC accuracy. Use Value: Maintains MPU stability during burst-mode execution; ±1.5% output tolerance ensures reliable boot and memory interface timing. | Use Scenario: Providing clean 1.8 V bias to HDMI PHYs, audio DACs, and video decoders in home theater receivers. IC Role / Device Role / Timing Role: Low-noise post-regulator for analog signal chains requiring minimal PSRR-induced jitter. Use Value: 80 dB ripple rejection at 1 kHz prevents switching artifacts from upstream DC/DC from degrading audio SNR or video color fidelity. |
| USB-Compliant 500 mA Port | Industrial Sensor Node |
Use Scenario: Implementing a self-powered USB device port with current limiting compliant to USB 2.0 specification. IC Role / Device Role / Timing Role: Regulated 1.8 V supply with externally programmable current limit (RPCL) for fault containment. Use Value: Enables precise 500 mA current limit via resistor selection - satisfies USB enumeration and overcurrent safety requirements. | Use Scenario: Powering ultra-low-power IoT sensor nodes (e.g., temperature/humidity sensors with BLE MCU) operating from 3.6 V Li-ion or 12 V industrial bus. IC Role / Device Role / Timing Role: Efficient step-down regulator delivering 1.8 V at sub-100 μA quiescent current in standby mode. Use Value: 320 μA IQ extends battery life; ON/OFF control allows full system sleep with near-zero leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP1154ADL25 | Fixed 2.5 V output; identical pinout, package, and feature set | Used where 2.5 V rail required for ADC references or logic interfaces | Select AP1154ADL25 only when 2.5 V output is needed - not a drop-in replacement for 1.8 V systems |
| Torex XC6210B182MR-G | 1.8 V, 1 A LDO in SOT-25; 250 mV dropout at 1 A; no PCL terminal | Lacks programmable current limit and thermal shutdown auto-recovery | Choose XC6210B182MR-G for cost-sensitive, non-safety-critical applications where PCL and robust protection are unnecessary |
Compared with AP1154ADL25 and XC6210B182MR-G, the AP1154ADL18 uniquely combines 1.8 V precision output, programmable current limiting, and integrated reverse-bias protection - making it optimal for USB-compliant and industrial hot-swap designs where fault resilience is mandatory.
Availability
AP1154ADL18 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB peripheral power supplies, low-voltage MPU core rails, and digital AV system biasing requiring stable component supply and long-term lifecycle support.
Supply support for AP1154ADL18 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 is a Japanese semiconductor manufacturer specializing in analog and mixed-signal ICs, including LDOs, DC/DC converters, and sensor signal conditioners.
The AP1154ADLXX family was designed for space-constrained, high-reliability applications demanding low dropout, programmable current limiting, and robust protection - targeting industrial automation, consumer AV, and USB-powered devices.
FAQ
What is the guaranteed output voltage tolerance for AP1154ADL18 over temperature?
The AP1154ADL18 guarantees ±1.5% output voltage accuracy (±50 mV absolute) across the full operating temperature range of –40°C to +85°C, as confirmed in Table 3 of the datasheet. This tolerance includes line, load, and temperature effects - ensuring reliable operation in industrial environments without external trimming.
Can AP1154ADL18 operate stably with a 1 μF ceramic output capacitor?
Yes, the AP1154ADL18 is explicitly characterized for stable operation with a 1.0 μF ceramic capacitor on the Vout pin, provided Vout ≥ 2.4 V. Since AP1154ADL18 has a 1.8 V output, the datasheet specifies ≥2.2 μF capacitance - so a 1 μF capacitor alone is insufficient; a 2.2 μF or higher X5R/X7R ceramic capacitor is required for guaranteed stability.
How is the current limit programmed on AP1154ADL18?
The AP1154ADL18 current limit is set by connecting an external resistor (RPCL) between the PCL pin and GND. For example, a 1 kΩ resistor yields ~1.0 A limit at 25°C and Vin = Vout + 1 V. The relationship is non-linear and documented in Figure 22; RPCL values from 100 Ω to 10 kΩ support limits from ~1.4 A down to ~200 mA.
Does AP1154ADL18 include reverse bias protection?
Yes, AP1154ADL18 integrates reverse bias overcurrent protection. When Vin = 0 V and Vout is back-driven (e.g., by a backup battery), the device limits reverse current to ≤0.1 μA at 25°C and ≤1.5 μA over –40°C to +85°C - preventing damage and unintended power sourcing from downstream circuits.
What is the maximum allowable input voltage for AP1154ADL18?
The absolute maximum input voltage for AP1154ADL18 is 16 V, but the recommended operating range is 2.4 V to 14.0 V per Section 9 of the datasheet. Operation above 14.0 V risks exceeding safe power dissipation limits, especially at elevated ambient temperatures, and may trigger thermal shutdown prematurely.
AP1154ADL18 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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
AP1154ADL18 FAQ
1.How can I place an order for AP1154ADL18 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1154ADL18 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 AP1154ADL18 reliable?
The price and inventory of AP1154ADL18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1154ADL18 is usually 5 days.
3.What payment methods are accepted for AP1154ADL18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1154ADL18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1154ADL18?
AP1154ADL18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1154ADL18 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 AP1154ADL18?
For technical support, including AP1154ADL18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1154ADL18 requirements.
6.How does Aetrix verify that AP1154ADL18 is sourced from the original manufacturer or authorized distributors?
All AP1154ADL18 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 AP1154ADL18 meets industry standards.
7.What is the process for return or replacement of AP1154ADL18?
All AP1154ADL18 units undergo pre-shipment inspection (PSI). If there is an issue with AP1154ADL18, 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 AP1154ADL18 part is unused and in its original packaging.
Return procedure for AP1154ADL18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1154ADL18 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
