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Diodes Incorporated PAM2306AYPKE
- Part No.:
- PAM2306AYPKE
- Manufacturer:
- Diodes Incorporated
- Package:
- 12-UFDFN Exposed Pad
- Datasheet:
-
PAM2306AYPKE.pdf
- Description:
- IC REG BUCK 1.8/3.3V UDFN303012
- Quantity:
- Payment:
- Shipping:
Inventory:1,119
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Product details
Overview
PAM2306AYPKE from Diodes Incorporated is a dual-channel, current-mode PWM step-down DC-DC converter in a U-DFN3030-12 package, delivering up to 1A per channel with 96% peak efficiency, 1.5MHz switching frequency, and 40μA typical quiescent current per channel. It supports 2.5V–5.5V input and configurable dual outputs (e.g., 3.3V/1.8V) for portable power rail generation in space-constrained battery-powered systems.
For engineers reviewing the PAM2306AYPKE datasheet, PAM2306AYPKE pinout, PAM2306AYPKE application, or PAM2306AYPKE equivalent, key selection criteria include dual-output voltage flexibility, PSM/PWM mode transition behavior, thermal shutdown threshold (+150°C), and synchronous rectifier integration enabling high-efficiency operation below 1V output.
Technical Context
The PAM2306AYPKE implements two independent current-mode PWM controllers with internal P-channel and N-channel MOSFETs, enabling synchronous buck conversion per channel. Each channel features cycle-by-cycle peak current limiting (1.5A typ), soft-start, and under-voltage lockout (UVLO) with hysteresis.
It operates in fixed-frequency PWM mode at light-to-heavy loads and automatically transitions to pulse-skipping modulation (PSM) under light load to reduce quiescent current to 40μA/channel. Feedback regulation uses a precise 0.6V reference with ±3% output voltage accuracy over line, load, and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single Li+/Li-Po cell, USB, or multi-cell alkaline/NiMH sources without external regulators. |
| Output Current (per channel) | Up to 1A - sufficient to power core logic, memory, and I/O rails in portable SoC subsystems. |
| Switching Frequency | 1.5MHz (typ) - enables use of small 2.2µH inductors and ceramic capacitors for compact PCB layout. |
| Quiescent Current | 40μA per channel (typ) - extends battery runtime in standby/sleep modes of handheld devices. |
| Feedback Reference Voltage | 0.6V ±2% - allows precise resistor-divider-based output setting (e.g., 1.2V to 3.3V) with minimal external components. |
| Thermal Shutdown Threshold | +150°C with +30°C hysteresis - protects against sustained overload or poor heatsinking while allowing recovery at +120°C. |
| Efficiency | Up to 96% - minimizes power loss and heat generation in thermally constrained U-DFN3030-12 package (θJA = 60°C/W). |
Pinout & Package
Package: U-DFN3030-12 (3.0mm × 3.0mm × 0.6mm), exposed thermal pad (Pin 3 & 9), RoHS-compliant NiPdAu finish, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN2 | Power Input (Channel 2) | Supplies input voltage to second buck regulator; must be decoupled locally with low-ESR ceramic capacitor. |
| 2 LX2 | Switch Node (Channel 2) | Connects to inductor and output capacitor; high di/dt node requiring short, wide trace routing away from sensitive analog nodes. |
| 3,9 Exposed Pad | Ground / Thermal Plane | Mandatory solder connection to large PCB ground plane for thermal dissipation and EMI reduction. |
| 4 FB1 | Feedback Input (Channel 1) | Monitors regulated output via resistor divider; high-impedance node requiring direct routing and shielding from noise. |
| 5,11 NC1, NC2 | No Connection | Unbonded pins; must remain unconnected and unpopulated on PCB. |
| 6 EN1 | Enable Input (Channel 1, Active High) | Controls startup/shutdown of Channel 1; logic-high threshold ≥1.5V, leakage <±0.01µA. |
| 7 VIN1 | Power Input (Channel 1) | Independent input supply for first buck regulator; may be tied to VIN2 or powered separately. |
| 8 LX1 | Switch Node (Channel 1) | Primary high-frequency switching node for Channel 1; requires identical layout care as LX2. |
| 10 FB2 | Feedback Input (Channel 2) | Regulation sense point for second output; routed separately from FB1 to avoid crosstalk. |
| 12 EN2 | Enable Input (Channel 2, Active High) | Independent enable control for Channel 2; supports staggered power sequencing in multi-rail systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent synchronous buck regulators | Eliminates need for external high-side/low-side MOSFETs and reduces BOM count by ≥6 components per channel. |
| Pulse-Skipping Modulation (PSM) + PWM mode | Automatically selects optimal regulation mode to maintain >85% efficiency across 10µA–1A load range. |
| Integrated thermal shutdown with hysteresis | Prevents latch-up during transient overloads; resumes operation only after junction cools to +120°C. |
| Internal 0.6V reference with ±3% accuracy | Enables stable output voltage setting across -40°C to +85°C ambient without trimming or calibration. |
| Short-circuit protection with 400kHz fallback | Limits average input current to ~200mA during output short, preventing damage while maintaining system visibility. |
Applications
| Smartphone Baseband Power | Wearable Sensor Hub Supply |
|---|---|
|
Use Scenario: Dual-rail power for application processor (1.2V core) and RF transceiver (2.8V I/O) in LTE/5G handsets. IC Role / Device Role / Timing Role: Primary dual-output PMIC providing tightly regulated, sequenced, and low-noise DC supplies. Use Value: 96% efficiency and 40μA quiescent current extend talk time by >12% versus discrete solutions; 1.5MHz switching avoids AM radio band interference. |
Use Scenario: Compact wearable device powering MCU (3.3V), MEMS sensors (1.8V), and BLE radio (2.5V) from coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Single-chip dual-buck regulator enabling ultra-low-power sleep mode with independent channel enable control. Use Value: PSM mode maintains 89% efficiency at 50µA load, extending shelf life beyond 18 months; U-DFN3030-12 footprint fits ≤8mm² PCB area. |
| USB-Powered IoT Gateway | Portable Medical Monitor |
|
Use Scenario: Dual-rail supply for ARM Cortex-M7 MCU (1.1V core) and Ethernet PHY (3.3V) in battery-backed industrial gateway. IC Role / Device Role / Timing Role: Input-flexible (2.5V–5.5V) dual converter supporting USB host (5V) or Li-ion (3.7V) input without redesign. Use Value: UVLO prevents deep discharge of backup battery; thermal shutdown ensures safe operation during enclosure overheating events. |
Use Scenario: Life-critical patient monitor requiring redundant, low-noise power for ADC front-end (2.5V reference) and display driver (3.3V). IC Role / Device Role / Timing Role: Dual-channel regulator with independent enable and feedback paths enabling fault-isolated power domains. Use Value: ±3% output accuracy and <10mV ripple ensure clinical-grade signal integrity; RoHS/halogen-free construction meets ISO 13485 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62150ARGTR | Single-channel, 1A, 2.5V–6V input, 3.5MHz switching, 18μA IQ | Requires two ICs for dual output; higher frequency enables smaller passives but increases EMI filtering complexity. | Select when board space permits separate regulators and ultra-low IQ (<20μA) is prioritized over integration. |
| RTQ2132BGQW | Dual-channel, 1.2A/ch, 2.7V–5.5V input, 2.2MHz, 25μA IQ, integrated compensation | Higher current rating and faster switching; lacks PSM mode - less efficient below 100µA load. | Select when peak load exceeds 1A/ch or tighter output voltage tolerance (±1%) is required for precision analog rails. |
Compared with TPS62150ARGTR and RTQ2132BGQW, the PAM2306AYPKE offers superior light-load efficiency via PSM, native dual-channel integration in a smaller footprint, and robust thermal protection - making it optimal for battery-constrained portable designs where standby duration and PCB area are critical.
Availability
PAM2306AYPKE is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor hub supply, USB-powered IoT gateways, and portable medical monitors requiring stable component supply across production lifecycles.
Supply support for PAM2306AYPKE 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-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The PAM2306AYPKE belongs to Diodes' PAM-series dual buck regulator family, designed specifically for space- and power-constrained portable electronics requiring high integration, low quiescent current, and reliable thermal management.
FAQ
What is the minimum recommended inductor value for PAM2306AYPKE at 1.8V/1A output?
The datasheet specifies 2.2µH as the standard inductor for 1.8V output. This value balances ripple current (≈400mA), core saturation margin (1.4A DC rating), and efficiency. Using <2.2µH increases ripple and EMI; >4.7µH adds unnecessary size and copper loss without meaningful benefit at this load point.
Can PAM2306AYPKE operate with only one channel enabled?
Yes. EN1 and EN2 are independently controlled. Disabling one channel (ENx = low) disconnects its input from output and reduces total quiescent current to ~40μA. The enabled channel continues full regulation; no cross-talk or instability occurs due to internal isolation of control loops and power paths.
How does the exposed thermal pad affect PCB layout and thermal performance?
The exposed pad (Pins 3 & 9) must be soldered to a solid copper pour connected to system ground. Minimum recommended pad area is 25mm² with ≥4 thermal vias (0.3mm diameter) to inner ground planes. This achieves θJA ≈60°C/W; omitting vias or undersizing the pad raises junction temperature by >25°C at full load.
What happens during input voltage dropout near the UVLO threshold?
When VIN drops below the UVLO threshold (~2.3V), both channels shut down and FB pins enter high-impedance state. Output voltages decay passively. Upon VIN recovery above threshold + hysteresis (~2.5V), soft-start reinitiates each enabled channel sequentially, preventing inrush current and output overshoot - no external reset circuitry is needed.
PAM2306AYPKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 12-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V, 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN3030-12
PAM2306AYPKE FAQ
1.How can I place an order for PAM2306AYPKE through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM2306AYPKE 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 PAM2306AYPKE reliable?
The price and inventory of PAM2306AYPKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2306AYPKE is usually 5 days.
3.What payment methods are accepted for PAM2306AYPKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2306AYPKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM2306AYPKE?
PAM2306AYPKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM2306AYPKE 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 PAM2306AYPKE?
For technical support, including PAM2306AYPKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2306AYPKE requirements.
6.How does Aetrix verify that PAM2306AYPKE is sourced from the original manufacturer or authorized distributors?
All PAM2306AYPKE 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 PAM2306AYPKE meets industry standards.
7.What is the process for return or replacement of PAM2306AYPKE?
All PAM2306AYPKE units undergo pre-shipment inspection (PSI). If there is an issue with PAM2306AYPKE, 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 PAM2306AYPKE part is unused and in its original packaging.
Return procedure for PAM2306AYPKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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