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Diodes Incorporated PAM2306AYPBB
- Part No.:
- PAM2306AYPBB
- Manufacturer:
- Diodes Incorporated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
PAM2306AYPBB.pdf
- Description:
- IC REG BUCK 1.2V 1A DL 12WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,242
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Product details
Overview
PAM2306AYPBB from Diodes Incorporated is a dual-channel, current-mode PWM step-down DC-DC converter with synchronous rectification, supporting 2.5V–5.5V input and delivering up to 1A per channel at adjustable or fixed outputs (e.g., 1.2V/1.5V). It integrates P/N-MOSFETs, operates at 1.5MHz, achieves 96% peak efficiency, and features pulse-skipping mode for ultra-low 40μA/channel quiescent current-optimized for battery-powered portable electronics.
For engineers reviewing the PAM2306AYPBB datasheet, PAM2306AYPBB pinout, PAM2306AYPBB application, or PAM2306AYPBB equivalent, key selection criteria include dual independent enable control (EN1/EN2), 0.6V feedback reference accuracy (±2%), thermal shutdown at +150°C, UVLO threshold at ~2.3V, and W-DFN3030-12 package thermal resistance (θJA = 60°C/W).
Technical Context
The PAM2306AYPBB implements two independent current-mode PWM controllers with integrated high-side P-MOSFET and low-side N-MOSFET per channel, enabling precise output regulation via external resistor dividers on FB1/FB2 pins. Its 1.5MHz fixed-frequency operation ensures compact filter design using ≤4.7μH inductors and ceramic capacitors.
Each channel supports seamless transition between PWM and pulse-skipping modulation (PSM) based on load demand-maintaining >85% efficiency down to 1mA while limiting quiescent current to 40μA/channel. Protection includes cycle-by-cycle peak current limiting (1.5A typical), short-circuit foldback (400kHz min frequency), and thermal shutdown with 30°C hysteresis.
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 pre-regulation. |
| Output Current (per channel) | Up to 1A - sufficient to power core logic, memory, or RF subsystems in portable devices. |
| Switching Frequency | 1.5MHz (typ.) - enables use of small 2.2–4.7μH inductors and low-ESR ceramic capacitors for space-constrained layouts. |
| Feedback Reference Voltage | 0.6V ±2% - sets output voltage via external resistor divider (e.g., 1.2V = 0.6V × (100k/100k + 1)). |
| Quiescent Current (per channel) | 40μA (typ.) - extends battery runtime in standby/sleep modes of handheld devices. |
| Efficiency (peak) | 96% - minimizes power loss and thermal stress in dual-rail power domains. |
| Thermal Shutdown Threshold | +150°C with +30°C hysteresis - prevents permanent damage during sustained overload or poor PCB heat sinking. |
Pinout & Package
Package: W-DFN3030-12 (Type US), 3.0mm × 3.0mm × 0.75mm, exposed thermal pad (pins 3 & 9), RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN2 | Power Input (Channel 2) | Supplies input voltage to second regulator channel; requires local 10μF ceramic decoupling. |
| 2 LX2 | Switch Node (Channel 2) | Connects to inductor and catch diode (or synchronous rectifier); high dv/dt node requiring tight layout. |
| 3, 9 Exposed Pad | Ground (Thermal & Electrical) | Mandatory solder connection to large PCB ground plane for thermal dissipation (θJC = 8.5°C/W). |
| 4 FB1 | Feedback Input (Channel 1) | Senses output voltage via resistor divider; high-impedance node sensitive to noise and trace coupling. |
| 5, 11 NC1, NC2 | No Connection | Unbonded pins; must remain unconnected and unpopulated on PCB. |
| 6 EN1 | Enable Input (Channel 1, Active High) | Logic-level control (VEN1 ≤ VIN1); pulls low to disable Channel 1 and reduce shutdown current to <0.1μA. |
| 7 VIN1 | Power Input (Channel 1) | Independent input rail for first regulator channel; allows dual-input source flexibility. |
| 8 LX1 | Switch Node (Channel 1) | Identical function to LX2; requires separate inductor and output filter per channel. |
| 10 FB2 | Feedback Input (Channel 2) | Independent feedback path for second channel; enables asynchronous voltage setting (e.g., 1.2V + 3.3V). |
| 12 EN2 | Enable Input (Channel 2, Active High) | Independent enable control for sequencing or power-domain isolation in multi-rail systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM channels | Enables simultaneous generation of two regulated rails (e.g., core + I/O) with separate enable and feedback control. |
| Synchronous rectification | Integrated P/N-MOSFETs eliminate external Schottky diodes, reducing conduction loss and board area. |
| 1.5MHz switching frequency | Permits use of sub-3mm inductors and 10μF ceramic caps, cutting solution size by >40% vs. 500kHz converters. |
| Pulse-skipping modulation (PSM) | Maintains >85% efficiency at 1mA load while drawing only 40μA/channel-critical for IoT sensor sleep modes. |
| Soft-start with current limiting | Gradually ramps switch current to 1.5A limit, preventing input voltage sag and output overshoot at startup. |
Applications
| Smartphone Baseband Power | Wireless Modem Core Supply |
|---|---|
|
Use Scenario: Dual-rail power for application processor (1.2V) and memory interface (3.3V) in LTE smartphones. IC Role / Device Role / Timing Role: Primary DC-DC regulator providing stable, sequenced, low-noise supply rails with independent enable control. Use Value: Enables simultaneous core and I/O domain regulation with <1% output voltage deviation across temperature and load. |
Use Scenario: Powering baseband SoC and RF transceiver in DSL/wireless modems operating from USB or wall adapter. IC Role / Device Role / Timing Role: Dual-output buck converter delivering 1.5V for digital logic and 2.5V for analog front-end circuitry. Use Value: Achieves 96% efficiency at full load while maintaining <20mVpp output ripple under dynamic 100mA–1A load steps. |
| Portable Medical Sensor Hub | Bluetooth Audio Earbud SoC |
|
Use Scenario: Battery-powered wearable sensor hub requiring isolated 1.8V (MCU) and 3.3V (BLE radio + analog sensors). IC Role / Device Role / Timing Role: Dual-channel PMIC managing power sequencing, low-quiescent operation, and thermal safety. Use Value: Extends single-cell Li-ion runtime to >72 hours in continuous sensing mode via 40μA/channel PSM operation. |
Use Scenario: Compact earbud PCB where space limits discrete regulators; powers DSP (1.2V), codec (1.8V), and Bluetooth radio (3.3V). IC Role / Device Role / Timing Role: Integrated dual-buck solution replacing two separate ICs to meet strict 3×3mm footprint constraints. Use Value: Reduces BOM count by 2 regulators, 4 inductors, and 8 capacitors while improving thermal performance via shared thermal pad. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | Single-channel, 3A output; no dual-rail capability; higher IQ (19μA) but no PSM mode. | Requires two ICs to match PAM2306AYPBB's dual independent regulation. | Select when higher per-channel current (>1A) or tighter load transient response is required over dual-rail integration. |
| RTQ2132BGQW | Dual-channel, 1.2A/channel; 2.5–5.5V input; 3.5MHz switching; IQ = 25μA/channel. | Higher frequency enables smaller passives but increases EMI sensitivity and reduces light-load efficiency vs. PSM. | Prefer for ultra-compact designs where 3.5MHz allows <1.5mm inductors, accepting trade-off in PSM-enabled battery life. |
Compared with TPS62130ARGTR and RTQ2132BGQW, the PAM2306AYPBB uniquely balances dual-rail integration, 40μA/channel PSM efficiency, and 1.5MHz operation-making it optimal for space- and battery-limited portable devices needing two independent, well-regulated supplies.
Availability
PAM2306AYPBB is available at Aetrix Electronics and suitable for smartphone baseband power, wireless modem core supply, portable medical sensor hubs, and Bluetooth audio earbud SoC applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PAM2306AYPBB 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The PAM2306 belongs to Diodes' high-efficiency DC-DC converter product line, engineered specifically for portable and battery-powered electronics demanding dual-rail regulation, ultra-low quiescent current, and minimal external component count.
FAQ
What is the minimum recommended output capacitance for stable operation?
The PAM2306AYPBB requires ≥10μF ceramic output capacitance per channel, with X5R/X7R dielectric and ≤10mΩ ESR. Lower ESR improves transient response and reduces output ripple; insufficient capacitance causes instability or excessive voltage droop under 1A load steps.
Can the two channels be configured for different output voltages?
Yes-each channel uses independent feedback pins (FB1/FB2) and enable inputs (EN1/EN2), allowing distinct output voltages (e.g., 1.2V on Channel 1, 3.3V on Channel 2) set by separate resistor dividers per the 0.6V reference equation VO = 0.6V × (R1/R2 + 1).
How does the thermal pad (pins 3 & 9) affect PCB layout?
The exposed thermal pad must be soldered to a solid copper pour connected to the system ground plane with ≥4 thermal vias (0.3mm diameter) to achieve θJA ≈ 60°C/W. Omitting this connection raises junction temperature by >40°C at 1A load, triggering premature thermal shutdown.
Is the PAM2306AYPBB qualified for automotive applications?
No-the PAM2306AYPBB is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP6320x series) with PPAP support and IATF 16949 manufacturing; this part is intended for commercial portable electronics per its -40°C to +85°C ambient rating and non-automotive qualification status.
PAM2306AYPBB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 12-WFDFN 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):
- 1.2V
- 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:
- W-DFN3030-12
PAM2306AYPBB FAQ
1.How can I place an order for PAM2306AYPBB through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM2306AYPBB 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 PAM2306AYPBB reliable?
The price and inventory of PAM2306AYPBB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2306AYPBB is usually 5 days.
3.What payment methods are accepted for PAM2306AYPBB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2306AYPBB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM2306AYPBB?
PAM2306AYPBB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM2306AYPBB 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 PAM2306AYPBB?
For technical support, including PAM2306AYPBB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2306AYPBB requirements.
6.How does Aetrix verify that PAM2306AYPBB is sourced from the original manufacturer or authorized distributors?
All PAM2306AYPBB 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 PAM2306AYPBB meets industry standards.
7.What is the process for return or replacement of PAM2306AYPBB?
All PAM2306AYPBB units undergo pre-shipment inspection (PSI). If there is an issue with PAM2306AYPBB, 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 PAM2306AYPBB part is unused and in its original packaging.
Return procedure for PAM2306AYPBB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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