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Diodes Incorporated AP7354-12FS4-7
- Part No.:
- AP7354-12FS4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7354-12FS4-7.pdf
- Description:
- IC REG LINEAR 1.2V 150MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
AP7354-12FS4-7 from Diodes Incorporated is a 1.2V fixed-output, 150mA ultra-low quiescent current LDO regulator in X2-DFN1010-4 (Type B) package, featuring ±1% output accuracy, 0.25µA quiescent current, and integrated enable control - designed for power management in space-constrained, battery-operated wearable and IoT sensor modules.
For engineers reviewing the AP7354-12FS4-7 datasheet, AP7354-12FS4-7 pinout, AP7354-12FS4-7 application, or AP7354-12FS4-7 equivalent, key selection criteria include dropout voltage at 150mA (0.60V typ), EN logic thresholds (0.4V low / 1.0V high), active discharge capability (35Ω typ), thermal resistance (295°C/W), and compatibility with 0.1µF ceramic input/output capacitors.
Technical Context
The AP7354-12FS4-7 implements a precision bandgap reference and error amplifier to maintain 1.2V output within ±1% over -40°C to +85°C ambient, with line regulation of 0.02%/V and load regulation of ±40mV across 1–150mA. Its internal current limit circuit protects against short-circuit faults up to 60mA.
Enable functionality is implemented via a dedicated EN pin (Pin 3) requiring TTL-compatible drive: logic high (>1.0V) enables regulation; logic low (<0.4V) forces shutdown with 0.02µA standby current. The device supports active output discharge only in D-suffix variants - this part (non-D) lacks discharge but retains EN control and ultra-low IQ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% at +25°C; ±2% over full temperature range - ensures stable core/sensor rail without external feedback. |
| Max Output Current | 150mA continuous - sufficient for microcontrollers, BLE radios, and image sensors in compact edge nodes. |
| Quiescent Current | 0.25µA typical - extends battery life in always-on wearables by minimizing idle power loss. |
| Dropout Voltage | 0.60V typ at 150mA - enables operation from single-cell Li-ion (3.0V min) or two-cell alkaline (2.4V min) sources. |
| Input Voltage Range | 2.0V to 5.5V - compatible with wide-input battery and intermediate supply rails. |
| EN Thresholds | VIL ≤ 0.4V, VIH ≥ 1.0V - interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Resistance | θJA = 295°C/W (X2-DFN1010-4) - requires minimal PCB copper area for thermal management in thin-profile designs. |
Pinout & Package
X2-DFN1010-4 (Type B) is a 1.0mm × 1.0mm, 0.39mm height, 4-terminal leadless package with exposed thermal pad (no electrical connection). It offers high power density and excellent thermal performance for space-limited portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VOUT | Regulated 1.2V output - connects directly to load; requires 0.1µF ceramic capacitor placed adjacent to pin. |
| Pin 2 | GND | Power ground reference - must be connected to system ground plane with low-impedance path to minimize noise and dropout error. |
| Pin 3 | EN | Active-high enable input - drives regulator ON/OFF; must not float; tied to VIN if always-on operation required. |
| Pin 4 | VIN | Input power supply (2.0–5.5V) - requires 0.1µF decoupling capacitor placed near pin to suppress supply transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.25µA typical - reduces battery drain in sleep modes, enabling multi-year operation in coin-cell-powered sensors. |
| High output accuracy | ±1% at +25°C, ±2% over -40°C to +85°C - eliminates need for post-regulation trimming in precision analog subsystems. |
| Small-footprint packaging | X2-DFN1010-4 (1.0mm × 1.0mm) - saves >70% board area vs. SOT25, critical for wrist-worn and hearable devices. |
| Robust protection suite | 4kV HBM ESD, 400mA latch-up immunity, and -0.3V to VIN+0.3V absolute max VOUT - enhances field reliability in uncontrolled environments. |
| Stable with minimal capacitance | 0.1µF ceramic CIN/COUT - simplifies layout, lowers BOM cost, and avoids large tantalum or polymer capacitors. |
Applications
| Wearable Fitness Tracker | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Powering accelerometer, gyroscope, and BLE SoC in a wrist-worn tracker operating on CR2032 coin cell. IC Role / Device Role: Primary 1.2V LDO supplying digital core and RF interface, enabled only during data transmission bursts. Use Value: 0.25µA IQ extends battery life beyond 12 months; 1.0mm² footprint enables ultra-thin form factor. |
Use Scenario: Regulating power for temperature/humidity sensor and sub-GHz transceiver in battery-powered smart agriculture node. IC Role / Device Role: Low-noise, always-on 1.2V rail for analog front-end and MCU real-time clock domain. Use Value: ±1% accuracy ensures consistent ADC reference stability; 2.0–5.5V input range accommodates aging primary cells. |
| Wireless Camera Module | Medical Patch Sensor |
|
Use Scenario: Supplying image signal processor and CMOS sensor in a miniaturized USB-C camera dongle. IC Role / Device Role: Secondary LDO delivering clean 1.2V to sensor analog block, isolated from noisy digital switching noise. Use Value: 0.02µA shutdown current prevents battery depletion during storage; fast EN turn-on (<10µs) supports instant wake-up. |
Use Scenario: Powering ultra-low-power ECG front-end ASIC and Bluetooth LE radio in disposable skin patch. IC Role / Device Role: Single-point 1.2V regulator for mixed-signal ASIC, activated only during periodic measurement cycles. Use Value: 0.60V dropout allows use of depleted 2.4V lithium primary cells; 4kV HBM ESD withstands handling in clinical settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-12FS4-7 | Higher output current (300mA), higher IQ (0.6µA), same package and EN interface. | Better suited for loads exceeding 150mA (e.g., dual-core MCUs), but less optimal for ultra-low-power sleep states. | Select when peak current demand exceeds 150mA and 0.25µA IQ is not mandatory. |
| MCP1700-1202E/MB | Same 1.2V/150mA rating, 1.6µA IQ, SOT23-3 package, no EN pin. | Lacks enable control and occupies larger board area; suitable only for always-on, non-space-constrained designs. | Choose only if EN functionality is unnecessary and X2-DFN1010-4 footprint is not required. |
Compared with AP7354-12FS4-7, AP7361-12FS4-7 trades ultra-low IQ for higher drive capability, while MCP1700-1202E/MB sacrifices both enable control and miniaturization - making the AP7354-12FS4-7 uniquely balanced for compact, battery-gated systems.
Availability
AP7354-12FS4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for AP7354-12FS4-7 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 high-reliability power management, signal integrity, and protection solutions for industrial, consumer, and automotive markets.
The AP7354 series belongs to Diodes' ultra-low-IQ LDO product line, engineered specifically for extended battery life in space-constrained portable and wireless edge devices.
FAQ
What is the minimum input voltage required for AP7354-12FS4-7 to regulate 1.2V at 150mA?
The minimum input voltage is determined by dropout: at 150mA, typical dropout is 0.60V, so VIN must be ≥ 1.8V. Absolute minimum VIN per spec is 2.0V across all conditions, ensuring reliable start-up and regulation under worst-case temperature and tolerance.
Does AP7354-12FS4-7 include output discharge functionality?
No. AP7354-12FS4-7 is the non-discharge variant. Only parts with "D" suffix (e.g., AP7354D-12FS4-7) integrate an internal discharge FET. This version relies on external pull-down or natural load decay for VOUT discharge during shutdown.
Can AP7354-12FS4-7 operate with ceramic capacitors smaller than 0.1µF?
No. The datasheet specifies 0.1µF as the minimum stable value for both CIN and COUT. Using smaller ceramics risks instability, overshoot, or oscillation due to insufficient phase margin - especially under load transients or temperature extremes.
Is the center thermal pad of the X2-DFN1010-4 package electrically connected?
No. The center pad is a thermal slug only, with no electrical connection. It must be soldered to a PCB thermal pad for heat dissipation but must not be tied to GND or any other net - doing so may cause short circuits or violate isolation requirements.
AP7354-12FS4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.9V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 0.6 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1010-4
AP7354-12FS4-7 FAQ
1.How can I place an order for AP7354-12FS4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7354-12FS4-7 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 AP7354-12FS4-7 reliable?
The price and inventory of AP7354-12FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7354-12FS4-7 is usually 5 days.
3.What payment methods are accepted for AP7354-12FS4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7354-12FS4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7354-12FS4-7?
AP7354-12FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7354-12FS4-7 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 AP7354-12FS4-7?
For technical support, including AP7354-12FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7354-12FS4-7 requirements.
6.How does Aetrix verify that AP7354-12FS4-7 is sourced from the original manufacturer or authorized distributors?
All AP7354-12FS4-7 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 AP7354-12FS4-7 meets industry standards.
7.What is the process for return or replacement of AP7354-12FS4-7?
All AP7354-12FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7354-12FS4-7, 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 AP7354-12FS4-7 part is unused and in its original packaging.
Return procedure for AP7354-12FS4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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