My Inquiry
My Account
Diodes Incorporated PAM2306AYPKB
- Part No.:
- PAM2306AYPKB
- Manufacturer:
- Diodes Incorporated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
PAM2306AYPKB.pdf
- Description:
- IC REG BCK 1.2V/3.3V DL 12WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,524
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PAM2306AYPKB from Diodes Incorporated is a dual-channel, synchronous step-down DC-DC converter with fixed 3.3V and adjustable outputs, supporting 2.5V–5.5V input, delivering up to 1A per channel, operating at 1.5MHz switching frequency, and achieving 96% peak efficiency in portable power management applications such as cellular phones and wireless modems.
For engineers reviewing the PAM2306AYPKB datasheet, PAM2306AYPKB pinout, PAM2306AYPKB application, or PAM2306AYPKB equivalent, key selection criteria include per-channel quiescent current (40µA typ), shutdown current (<0.1µA), feedback reference voltage (0.6V), thermal shutdown threshold (+150°C), and W-DFN3030-12 package compatibility with high-density PCB layouts.
Technical Context
The PAM2306AYPKB integrates two independent current-mode PWM controllers with pulse-skipping modulation (PSM) for light-load efficiency optimization and fixed-frequency PWM for heavy-load stability. Each channel features internal P/N-MOSFETs with RDS(ON) of 0.3Ω (P-ch) and 0.35Ω (N-ch), enabling high-efficiency synchronous rectification without external diodes.
It employs a 0.6V precision internal reference, soft-start circuitry limiting inrush current, and cycle-by-cycle peak current limiting (1.5A typ) with overtemperature protection (150°C trip, 30°C hysteresis). UVLO activates below 2.5V input, ensuring safe startup from single-cell Li+/alkaline sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single Li+/Li-polymer, dual alkaline/NiMH, or USB 5V sources without external regulation. |
| Output Voltage (Ch1) | Fixed 3.3V - eliminates external feedback resistors for Ch1, reducing BOM count and layout complexity. |
| Output Voltage (Ch2) | Adjustable via FB2 pin - set using external resistor divider; VFB = 0.6V enables precise output tuning (e.g., 1.2V–3.3V). |
| Switching Frequency | 1.5MHz (typ) - allows use of compact 2.2µH inductors and ceramic capacitors, minimizing solution footprint. |
| Quiescent Current | 40µA per channel (typ) - extends battery runtime in always-on or low-duty-cycle portable systems. |
| Peak Efficiency | 96% - achieved via synchronous rectification and low RDS(ON), reducing thermal load in space-constrained designs. |
| Thermal Shutdown | +150°C with +30°C hysteresis - protects IC during sustained overload or poor PCB heat sinking. |
| Shutdown Current | <0.1µA per channel - ensures near-zero battery drain when disabled in battery-backed systems. |
Pinout & Package
Package: W-DFN3030-12 (Type US), 3.0mm × 3.0mm × 0.75mm, thermally enhanced with exposed GND pad (Pins 3 & 9) requiring solder connection to PCB ground plane for optimal thermal performance (θJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN2 | Power Input (Channel 2) | Supplies input voltage to second buck regulator; must be decoupled locally with ≥10µF ceramic capacitor. |
| 2 LX2 | Switch Node (Channel 2) | Connects to inductor and output capacitor; high dv/dt node requiring short, low-inductance routing. |
| 3, 9 Exposed Pad | Ground (Thermal & Electrical) | Primary thermal path and low-impedance GND return; must be fully soldered to large copper pour. |
| 4 FB1 | Feedback (Channel 1) | Internally tied to fixed 3.3V regulator; not user-accessible - no external components required. |
| 5, 11 NC1, NC2 | No Connection | Unbonded pins; must remain unconnected and unpopulated on PCB to avoid parasitic coupling. |
| 6 EN1 | Enable (Channel 1) | Active-high logic control (VEH = 1.5V min); ties to system power rail or microcontroller GPIO. |
| 7 VIN1 | Power Input (Channel 1) | Supplies input to fixed 3.3V regulator; may be shared with VIN2 or independently powered. |
| 8 LX1 | Switch Node (Channel 1) | High-frequency switching node for Channel 1; requires separate LC filter from LX2 to prevent crosstalk. |
| 10 FB2 | Feedback (Channel 2) | Connects to resistor divider for adjustable output; sensitive analog node requiring guard ring and short trace. |
| 12 EN2 | Enable (Channel 2) | Independent enable for Channel 2; supports staggered startup or dynamic power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | One fixed 3.3V output (Ch1) and one adjustable output (Ch2) enable flexible multi-rail power delivery from single input source. |
| Synchronous rectification | Integrated P/N-MOSFETs eliminate external Schottky diodes, reducing conduction loss and improving efficiency above 300mA load. |
| Pulse-skipping mode (PSM) | Reduces quiescent current to 40µA per channel at light loads, extending battery life in standby or sleep states. |
| Comprehensive protection | Includes cycle-by-cycle current limiting (1.5A), thermal shutdown (+150°C), UVLO, and short-circuit recovery at 400kHz. |
| Soft-start control | Digital soft-start limits inrush current by ramping switch current in steps, preventing input voltage sag and output overshoot. |
Applications
| Cellular Phone Power Management | Wireless Modem Core Supply |
|---|---|
|
Use Scenario: Dual-rail power for baseband processor (1.2V/1.5V core) and RF transceiver (3.3V I/O) in LTE/5G handsets. IC Role / Device Role / Timing Role: Primary dual-output DC-DC converter providing regulated, sequenced, and efficient voltage rails. Use Value: Enables compact form factor via 3mm×3mm package and eliminates need for discrete MOSFETs or external diodes. |
Use Scenario: Powering DSL/wireless modem SoC requiring stable 3.3V I/O and programmable 1.8V core voltage. IC Role / Device Role / Timing Role: Dual-channel buck regulator with independent enable pins for power-domain isolation and wake-up sequencing. Use Value: Achieves 96% efficiency at full load and 40µA quiescent current in idle mode, optimizing modem battery life. |
| Portable Medical Sensor Hub | Industrial Handheld Terminal |
|
Use Scenario: Powering ultra-low-power sensor fusion module (accelerometer, temperature, ECG front-end) with 2.5V analog and 1.8V digital rails. IC Role / Device Role / Timing Role: High-efficiency dual buck converter supporting battery operation across -40°C to +85°C ambient range. Use Value: Maintains regulation down to 2.5V input (single Li+ cell) and delivers <0.1µA shutdown current for long-term storage. |
Use Scenario: Providing robust 3.3V logic supply and adjustable 2.8V display backlight driver in ruggedized handheld terminals. IC Role / Device Role / Timing Role: Dual-output PMIC with thermal shutdown and UVLO, ensuring reliable operation under variable industrial input conditions. Use Value: Withstands transient overvoltage (6.5V abs max) and delivers 1A per channel with integrated MOSFETs, reducing component count. |
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 |
|---|---|---|---|
| TPS65070RSLR | Triple-output (2 buck + 1 LDO), higher IQ (100µA), 3mm×3mm QFN-16 package, supports I²C programmability. | Requires firmware integration for voltage configuration; better suited for systems needing dynamic voltage scaling. | Select if programmable outputs and integrated LDO are required; avoid if fixed/adjustable dual-buck simplicity is preferred. |
| RT8070ZSP | Dual buck only, 2A per channel, 2.7V–5.5V input, 45µA IQ, W-QFN3x3-16 package, no PSM mode. | Lacks pulse-skipping mode - less optimal for battery-powered devices with intermittent low-load operation. | Choose for higher current demand (>1A) or where constant-frequency operation is mandatory; not recommended for ultra-low-IQ designs. |
Compared with TPS65070RSLR and RT8070ZSP, the PAM2306AYPKB offers the lowest quiescent current (40µA), smallest footprint (W-DFN3030-12), and dedicated PSM mode - making it optimal for space- and battery-life-constrained dual-rail portable applications.
Availability
PAM2306AYPKB is available at Aetrix Electronics and suitable for cellular phone power management, wireless modem core supply, portable medical sensor hubs, and industrial handheld terminals requiring stable component supply and long-term manufacturability.
Supply support for PAM2306AYPKB 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 power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The PAM2306 belongs to Diodes' high-efficiency DC-DC converter product line, designed specifically for portable electronics requiring dual-output, low-quiescent-current, and thermally robust power conversion in minimal PCB area.
FAQ
What is the function of Pins 5 and 11 (NC1, NC2) on the PAM2306AYPKB?
Pins 5 and 11 are unconnected (NC) and internally unbonded. They must remain floating - no solder mask opening, no trace routing, and no connection to any net. Leaving them unpopulated prevents parasitic coupling, noise injection into sensitive analog nodes like FB2, and potential thermal or electrical interference with adjacent LX or EN pins.
Can the PAM2306AYPKB's Channel 2 be configured for a fixed 2.8V output?
Yes - Channel 2 is adjustable via FB2 and can be set to 2.8V using an external resistor divider. With VFB = 0.6V, select R1 = 360kΩ and R2 = 100kΩ (standard E96 values), yielding VO = 0.6 × (1 + 360k/100k) = 2.76V (±3% accuracy). This matches the 2.8V nominal requirement within datasheet tolerance and avoids custom trimming.
How does the PAM2306AYPKB handle input voltage dropout near the output level?
When VIN approaches VO, the PAM2306AYPKB enters 100% duty-cycle mode: the P-channel MOSFET remains fully on, and VOUT ≈ VIN − ILOAD × (RDS(ON) + RL). With RDS(ON) = 0.3Ω and typical inductor DCR <50mΩ, dropout is <350mV at 1A - enabling usable regulation down to VIN = VO + 0.35V.
Is the exposed thermal pad (Pins 3 & 9) electrically isolated from other pins?
No - the exposed pad is internally connected to GND and serves as both the primary thermal path and the main ground reference. It must be soldered to a solid, low-impedance PCB ground plane covering ≥80% of the pad area. Failure to connect it results in thermal derating (θJA degrades from 60°C/W to >120°C/W) and potential instability due to ground bounce.
PAM2306AYPKB 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, 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:
- W-DFN3030-12
PAM2306AYPKB FAQ
1.How can I place an order for PAM2306AYPKB through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM2306AYPKB 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 PAM2306AYPKB reliable?
The price and inventory of PAM2306AYPKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2306AYPKB is usually 5 days.
3.What payment methods are accepted for PAM2306AYPKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2306AYPKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM2306AYPKB?
PAM2306AYPKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM2306AYPKB 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 PAM2306AYPKB?
For technical support, including PAM2306AYPKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2306AYPKB requirements.
6.How does Aetrix verify that PAM2306AYPKB is sourced from the original manufacturer or authorized distributors?
All PAM2306AYPKB 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 PAM2306AYPKB meets industry standards.
7.What is the process for return or replacement of PAM2306AYPKB?
All PAM2306AYPKB units undergo pre-shipment inspection (PSI). If there is an issue with PAM2306AYPKB, 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 PAM2306AYPKB part is unused and in its original packaging.
Return procedure for PAM2306AYPKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PAM2306AYPKB Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
