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Asahi Kasei Microdevices/AKM AP1153ADS18
- Part No.:
- AP1153ADS18
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP1153ADS18.pdf
- Description:
- IC REG LINEAR 1.8V 100MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,594
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Product details
Overview
AP1153ADS18 from Asahi Kasei Microdevices is a 1.8 V, 100 mA low-dropout linear regulator with ON/OFF control, silicon monolithic bipolar construction, ±1.5% output voltage accuracy, and 160 mV dropout at full load. It supports 2.1–14.0 V input, uses only a 0.22 μF ceramic output capacitor, and integrates thermal shutdown, short-circuit protection, and reverse-bias overcurrent protection for space-constrained battery-powered systems.
For engineers reviewing the AP1153ADS18 datasheet, AP1153ADS18 pinout, AP1153ADS18 application, or AP1153ADS18 equivalent, key selection considerations include its SOT23-5 package footprint, 75 μA quiescent current at zero load, 80 dB ripple rejection at 1 kHz, noise bypass (NP) terminal for ultra-low-noise operation, and guaranteed performance across –40°C to +85°C.
Technical Context
The AP1153ADS18 employs a bandgap reference and internal control circuitry to regulate output voltage with high DC precision and low temperature drift (35 ppm/°C). Its ON/OFF control is high-active, with built-in 500 kΩ pull-down resistor on VCONT and defined turn-on (>1.8 V) and turn-off (<0.35 V) thresholds.
Stability is ensured with ≥0.22 μF ceramic output capacitance; the NP pin accepts 0.001–0.1 μF bypass capacitors to reduce output noise-measured at 38 μVrms (typ.) at 3.0 V output. The device operates within 2.1–14.0 V input range and delivers regulated 1.8 V ±1.5% (±27 mV) under 100 mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±1.5% (±27 mV) - tightly trimmed for precision biasing in analog and RF circuits |
| Max Output Current | 100 mA - sufficient for microcontrollers, sensors, and low-power logic rails |
| Dropout Voltage | 160 mV at 100 mA - enables regulation from 1.96 V input, critical for single-cell Li-ion or alkaline systems |
| Quiescent Current | 75 μA at IOUT = 0 mA - minimizes standby power loss in always-on battery applications |
| Ripple Rejection | 80 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Noise (RMS) | 38 μV at 3.0 V output - low enough for ADC references and audio preamp supplies |
| Operating Temp | –40°C to +85°C - qualified for automotive accessory and industrial embedded use |
Pinout & Package
AP1153ADS18 is housed in a compact, thin-profile SOT23-5 surface-mount package (2.9 mm × 1.6 mm × 1.1 mm), optimized for PCB area-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCONT | ON/OFF Control Input | High-active enable; internal 500 kΩ pull-down ensures default OFF state; logic-compatible with CMOS outputs |
| GND | Ground Reference | Common return path for input, output, and control circuits; must be low-impedance for stability |
| NP | Noise Bypass Terminal | Connects external capacitor (0.001–0.1 μF) to GND to reduce output voltage noise and improve PSRR |
| VOUT | Regulated Output | Delivers stable 1.8 V; requires ≥0.22 μF ceramic capacitor for loop stability across full temp/voltage range |
| VIN | Input Supply | Accepts 2.1–14.0 V; internal protections guard against reverse bias, overcurrent, and thermal overload |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small output capacitor support | Stable with 0.22 μF ceramic - reduces BOM count and board area vs. legacy LDOs requiring ≥1 μF |
| Low-noise architecture | 38 μVrms output noise + dedicated NP pin - enables clean supply for precision analog and RF ICs |
| Integrated protection suite | Thermal shutdown, short-circuit current limiting, and reverse-bias overcurrent protection - eliminates need for external safety components |
| Wide input voltage range | 2.1–14.0 V operation - accommodates varied sources including automotive batteries, wall adapters, and multi-cell packs |
| High-accuracy output | ±1.5% tolerance at 25°C, ±50 mV max - meets tight regulation requirements for memory I/O and core logic rails |
Applications
| Automotive Accessory Power | Portable Medical Sensor Node |
|---|---|
Use Scenario: Powering CAN transceiver interface and microcontroller in rear-view camera module. IC Role / Device Role / Timing Role: Primary 1.8 V LDO supplying MCU core and digital I/O, enabled via vehicle ignition signal. Use Value: 75 μA quiescent current extends battery life during parking mode; 80 dB ripple rejection prevents EMI-induced communication errors. | Use Scenario: Regulating power for wearable ECG front-end amplifier and Bluetooth LE SoC. IC Role / Device Role / Timing Role: Low-noise 1.8 V rail for analog signal chain and digital subsystem, controlled by system sleep controller. Use Value: NP pin bypass reduces output noise to 38 μVrms, preserving SNR in sub-μV bio-potential measurements. |
| Industrial IoT Edge Node | Smartphone Peripheral Module |
Use Scenario: Supplying 1.8 V to LoRaWAN transceiver and environmental sensor cluster in remote monitoring unit. IC Role / Device Role / Timing Role: Always-on LDO with ON/OFF control synchronized to wireless transmission bursts. Use Value: 160 mV dropout allows operation down to 1.96 V input, extending runtime from primary lithium-thionyl chloride cell. | Use Scenario: Providing auxiliary 1.8 V rail for camera ISP and image sensor interface in modular phone add-on. IC Role / Device Role / Timing Role: Secondary LDO decoupling high-speed digital interfaces from noisy main PMIC. Use Value: ±1.5% output accuracy ensures compliance with MIPI CSI-2 timing margins; SOT23-5 footprint matches tight layout constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 1.8 V, 250 mA, 6 μA IQ, SOT23-3 - no NP pin, no reverse-bias protection, lower max input (6 V) | Suitable for ultra-low-IQ consumer wearables but not automotive or wide-input industrial use | Select if lowest quiescent current is critical and input stays ≤6 V; avoid where reverse polarity risk exists |
| Torex XC6206P182MR-G | 1.8 V, 100 mA, 1.0 μA IQ, SOT23-5 - no NP pin, no thermal shutdown, ±2% accuracy | Fits cost-sensitive portable electronics with minimal thermal stress; lacks robustness for automotive ambient | Choose for battery-only applications with strict IQ budget and benign thermal environment |
Compared with MCP1700T-1802E/TT and XC6206P182MR-G, AP1153ADS18 provides superior noise performance via the NP pin, wider input range (2.1–14.0 V), and integrated reverse-bias protection-making it uniquely suited for automotive accessories and industrial edge nodes where reliability and noise immunity are non-negotiable.
Availability
AP1153ADS18 is available at Aetrix Electronics and suitable for automotive accessory equipment, battery-powered medical sensors, and industrial IoT edge nodes requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature extremes.
Supply support for AP1153ADS18 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 AP1153ADSXX series was designed specifically for space-constrained, low-noise, and high-reliability applications in automotive and industrial environments-emphasizing small footprint, robust protection, and stable operation with minimal external components.
FAQ
What is the guaranteed output voltage tolerance of the AP1153ADS18 across temperature?
The AP1153ADS18 guarantees ±1.5% output voltage accuracy at TA = 25°C, and ±50 mV maximum deviation over the full operating range of –40°C to +85°C. This is confirmed in Tables 5 and 6 of the datasheet, where the 1.8 V version (AP1153ADS18) shows min/max output of 1.720 V / 1.880 V at temperature extremes.
Can the AP1153ADS18 operate with a 0.22 μF output capacitor across its entire temperature and voltage range?
Yes-the AP1153ADS18 is explicitly characterized and guaranteed stable with ≥0.22 μF ceramic output capacitance across all conditions (1.3–5.0 V output, –40°C to +85°C). Section 11.8 states this value is sufficient for stable operation, provided the capacitor has low ESR (e.g., X5R/X7R ceramic).
What is the function of the NP pin on the AP1153ADS18, and what capacitor value is recommended?
The NP (Noise Bypass) pin on the AP1153ADS18 connects to an internal reference node; adding a capacitor (0.001–0.1 μF) between NP and GND reduces output voltage noise. Datasheet Section 11.11 recommends 0.01 μF as a standard value, with higher values further lowering noise-e.g., 38 μVrms measured at 0.01 μF for 3.0 V output.
Does the AP1153ADS18 include reverse-voltage protection, and how does it behave?
Yes-the AP1153ADS18 integrates reverse-bias overcurrent protection. Per Absolute Maximum Ratings (Section 8), it withstands –0.4 V to +6 V on VOUT when VOUT ≤ 2.0 V, and up to +12 V otherwise. Section 2 confirms "built-in reverse bias over current protection" prevents damage during accidental reverse connection.
What is the minimum input voltage required for the AP1153ADS18 to maintain regulation at 100 mA load?
The AP1153ADS18 requires VIN ≥ VOUT + VDROP. With VOUT = 1.8 V and VDROP = 160 mV (max) at 100 mA (Section 10, Table 3), the minimum input is 1.96 V. This is validated in Section 11.1's dropout voltage plots and aligns with the 2.1 V absolute minimum operating voltage specified in Section 9.
AP1153ADS18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- 100mA
- Current - Quiescent (Iq):
- 145 µA
- Current - Supply (Max):
- 3.3 mA
- PSRR:
- 80dB (1kHz)
- Control Features:
- 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:
- SOT-23-5
AP1153ADS18 FAQ
1.How can I place an order for AP1153ADS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1153ADS18 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 AP1153ADS18 reliable?
The price and inventory of AP1153ADS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1153ADS18 is usually 5 days.
3.What payment methods are accepted for AP1153ADS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1153ADS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1153ADS18?
AP1153ADS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1153ADS18 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 AP1153ADS18?
For technical support, including AP1153ADS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1153ADS18 requirements.
6.How does Aetrix verify that AP1153ADS18 is sourced from the original manufacturer or authorized distributors?
All AP1153ADS18 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 AP1153ADS18 meets industry standards.
7.What is the process for return or replacement of AP1153ADS18?
All AP1153ADS18 units undergo pre-shipment inspection (PSI). If there is an issue with AP1153ADS18, 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 AP1153ADS18 part is unused and in its original packaging.
Return procedure for AP1153ADS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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