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Asahi Kasei Microdevices/AKM AP1153ADS33
- Part No.:
- AP1153ADS33
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP1153ADS33.pdf
- Description:
- IC REG LINEAR 3.3V 100MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
AP1153ADS33 from Asahi Kasei Microdevices is a 3.3V, 100mA low-dropout linear regulator in SOT23-5 package with ON/OFF control, ±1.5% output voltage accuracy, 160mV dropout at full load, and integrated thermal/short-circuit/reverse-bias protection. It powers space-constrained battery-powered systems requiring stable low-noise 3.3V supply.
For engineers reviewing the AP1153ADS33 datasheet, AP1153ADS33 pinout, AP1153ADS33 application, or AP1153ADS33 equivalent, key selection criteria include its 2.1–14.0V input range, 75μA quiescent current, 80dB ripple rejection at 1kHz, 0.22μF minimum ceramic output capacitor support, and noise-bypass (NP) terminal for ultra-low-noise operation.
Technical Context
The AP1153ADS33 uses a bipolar monolithic structure with internal bandgap reference and active control circuitry to regulate output voltage. Its ON/OFF function is high-active, with built-in 500kΩ pull-down resistor on VCONT and guaranteed switching thresholds of VCONT > 1.8V (ON) and VCONT < 0.35V (OFF).
Stability is ensured with ≥0.22μF ceramic output capacitance; the NP pin accepts 0.001–0.1μF bypass capacitors to reduce output noise-measured at 38μVrms (typ.) at 3.0V output-and enables optimization for low-noise applications without oscillation risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300V ±1.5% (3.217–3.383V over –40°C to +85°C), trimmed during production for precision point-of-load regulation |
| Max Output Current | 100mA continuous; limited by thermal dissipation-supports 150mA peak under short-term transient conditions |
| Dropout Voltage | 160mV at 100mA load (typ.), enabling regulation from 3.46V input for 3.3V output-critical for battery-powered systems near end-of-life |
| Quiescent Current | 75μA at zero load, minimizing standby power loss in always-on or intermittently active devices |
| Ripple Rejection | 80dB at 1kHz, 70dB at 10kHz-suppresses switching noise from upstream DC/DC converters feeding the LDO |
| Noise Performance | 38μVrms (typ.) with 1.0μF COUT and 0.01μF CNP, meeting low-noise analog/RF supply requirements |
| Input Voltage Range | 2.1V to 14.0V-compatible with single-cell Li-ion (2.7–4.2V), dual-cell alkaline (2.4–3.2V), and automotive 12V rails with transient suppression |
Pinout & Package
AP1153ADS33 is housed in a 5-pin SOT23-5 surface-mount package (2.9mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCONT | ON/OFF Control Input | High-active enable; internal 500kΩ pull-down ensures default OFF state; requires ≥1.8V to activate regulator |
| GND | Ground Reference | Common return path for input, output, and control circuits; must be low-impedance for stability and noise performance |
| NP | Noise Bypass Terminal | Connects external capacitor (0.001–0.1μF) to GND to suppress internal reference noise-directly lowers output voltage noise floor |
| VOUT | Regulated Output | Delivers stable 3.3V to load; requires ≥0.22μF ceramic capacitor (low ESR) for loop stability across temperature and voltage range |
| VIN | Unregulated Input | Accepts 2.1–14.0V supply; benefits from ≥0.47μF ceramic input capacitor when source impedance is high or trace length is long |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | SOT23-5 package (2.9 × 1.6 mm) enables placement in tight spaces-ideal for wearables and compact modules |
| Low-noise regulation | NP pin supports configurable noise filtering; 38μVrms output noise meets analog sensor and RF front-end requirements |
| Robust protection suite | Integrated thermal shutdown, short-circuit current limiting (200mA), and reverse-bias overcurrent protection prevent field failures |
| Wide-input compatibility | 2.1–14.0V operating range supports diverse sources-from coin cells to automotive 12V-without external pre-regulation |
| Minimal external components | Stable with only 0.22μF ceramic output capacitor; eliminates need for tantalum or electrolytic types and reduces BOM count |
Applications
| Automotive Accessory Equipment | Battery-Powered Systems |
|---|---|
Use Scenario: Powering infotainment USB hubs, OBD-II adapters, and LED interior lighting modules in vehicles with 12V battery rails subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying microcontroller I/O, CAN transceiver logic, and sensor interfaces-acting as final-stage clean power filter. Use Value: Withstands 14V max input and includes reverse-bias protection to survive battery reversal during service; 80dB ripple rejection suppresses alternator noise. | Use Scenario: Supplying Bluetooth LE modules, environmental sensors, and real-time clocks in portable medical monitors and handheld test equipment. IC Role / Device Role / Timing Role: Low-quiescent-current (75μA) 3.3V regulator enabling multi-week battery life in sleep mode while maintaining fast wake-up response via VCONT control. Use Value: Enables use of single CR2032 or two AA cells; 0.22μF output cap reduces component height and cost versus larger tantalum alternatives. |
| Mobile Communication | Any Electronic Equipment |
Use Scenario: Providing regulated 3.3V bias to cellular modem baseband processors and GNSS receivers in asset trackers and IoT gateways. IC Role / Device Role / Timing Role: Noise-sensitive analog supply rail decoupled via NP pin capacitor to meet stringent phase-noise and SNR requirements of RF receivers. Use Value: 38μVrms output noise and 70dB rejection at 10kHz minimize reciprocal mixing and improve receiver sensitivity in crowded spectral environments. | Use Scenario: Powering industrial PLC I/O modules, smart meter MCUs, and factory automation sensors where reliability and long-term parametric stability are critical. IC Role / Device Role / Timing Role: General-purpose 3.3V LDO delivering precise, temperature-stable voltage (35ppm/°C drift) across –40°C to +85°C operating range. Use Value: ±1.5% initial accuracy and low tempco ensure consistent ADC reference and digital logic timing margins without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | 3.3V fixed, 250mA output, 1.6μA quiescent current, SOT23-5-but no NP pin or reverse-bias protection | Lacks noise-bypass capability and reverse-bias protection; suited for ultra-low-IQ applications where noise is secondary | Select if lowest possible standby current is required and noise/robustness are not primary concerns |
| Torex XC6206P332MR-G | 3.3V fixed, 150mA output, 3μA IQ, SOT23-5-but no NP pin, lower ripple rejection (65dB @ 1kHz), no reverse-bias protection | Optimized for minimal quiescent current in energy-harvesting systems; lacks noise tailoring and automotive-grade robustness | Choose for batteryless or energy-harvested designs where 3μA IQ outweighs noise and protection needs |
Compared with MCP1700T-3302E/TT and XC6206P332MR-G, the AP1153ADS33 uniquely combines 3.3V precision regulation, NP-driven ultra-low-noise operation, and comprehensive protection-including reverse-bias current limiting-making it optimal for automotive and noise-sensitive embedded systems where reliability and signal integrity are non-negotiable.
Availability
AP1153ADS33 is available at Aetrix Electronics and suitable for automotive accessory equipment, battery-powered systems, and mobile communication devices requiring stable component supply, long-term lifecycle support, and guaranteed parametric consistency across production batches.
Supply support for AP1153ADS33 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 core expertise in power management, audio, and magnetic sensing technologies.
The AP1153ADSXX series was designed specifically for space-constrained, high-reliability applications demanding low-noise, low-quiescent-current LDO regulation with robust fault protection-targeting automotive, industrial, and portable electronics markets.
FAQ
What is the guaranteed output voltage tolerance for AP1153ADS33 across temperature?
The AP1153ADS33 guarantees output voltage within ±1.5% (±50mV) over the full operating temperature range of –40°C to +85°C, with typical output of 3.300V and min/max bounds of 3.217V and 3.383V respectively per Table 5 in the datasheet. This precision is achieved through laser-trimmed internal reference circuitry.
Can AP1153ADS33 operate with a 0.22μF output capacitor, and what type is recommended?
Yes, AP1153ADS33 is fully stable with a 0.22μF ceramic output capacitor-the minimum value specified for all output voltages (1.3–5.0V) across temperature and voltage ranges. X5R or X7R dielectric ceramic capacitors are recommended; avoid high-ESR types like tantalum, which may cause instability or oscillation.
What is the function of the NP pin on AP1153ADS33, and how should it be used?
The NP (Noise Bypass) pin on AP1153ADS33 connects to an external capacitor (0.001–0.1μF) to ground, directly reducing internal bandgap reference noise and lowering output voltage noise-measured at 38μVrms (typ.) with 0.01μF. Increasing CNP further reduces noise but slows VCONT turn-on response time.
Does AP1153ADS33 include reverse-bias protection, and under what conditions does it activate?
Yes, AP1153ADS33 integrates reverse-bias overcurrent protection that activates when VOUT exceeds VIN-a condition common during hot-swap or battery replacement. For VOUT ≤ 2.0V, maximum reverse voltage is 6V; for VOUT ≥ 2.1V, it is 12V. This prevents damage and uncontrolled current flow into the input rail.
What is the maximum allowable input voltage for AP1153ADS33, and what happens beyond that limit?
The absolute maximum input voltage for AP1153ADS33 is 16V (per Absolute Maximum Ratings). Operation above 14.0V-the recommended maximum-is not guaranteed and risks permanent damage. Exceeding 16V violates absolute ratings and may cause junction breakdown, irreversible degradation, or catastrophic failure even with brief exposure.
AP1153ADS33 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 100mA
- 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
AP1153ADS33 FAQ
1.How can I place an order for AP1153ADS33 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1153ADS33 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 AP1153ADS33 reliable?
The price and inventory of AP1153ADS33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1153ADS33 is usually 5 days.
3.What payment methods are accepted for AP1153ADS33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1153ADS33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1153ADS33?
AP1153ADS33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1153ADS33 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 AP1153ADS33?
For technical support, including AP1153ADS33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1153ADS33 requirements.
6.How does Aetrix verify that AP1153ADS33 is sourced from the original manufacturer or authorized distributors?
All AP1153ADS33 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 AP1153ADS33 meets industry standards.
7.What is the process for return or replacement of AP1153ADS33?
All AP1153ADS33 units undergo pre-shipment inspection (PSI). If there is an issue with AP1153ADS33, 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 AP1153ADS33 part is unused and in its original packaging.
Return procedure for AP1153ADS33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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