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Diodes Incorporated PAM2305CGF180
- Part No.:
- PAM2305CGF180
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
PAM2305CGF180.pdf
- Description:
- IC REG BUCK 1.8V 1A 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,790
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Product details
Overview
PAM2305CGF180 from Diodes Incorporated is a 1A synchronous step-down DC-DC converter with fixed 1.8V output, internal power MOSFETs, and pulse-skipping modulation (PSM) for ultra-low quiescent current (40µA typ) in light-load portable applications. It operates from 2.5V to 5.5V input, delivers up to 1A continuous output, and features 1.5MHz switching frequency, 0.6V feedback reference, and thermal shutdown.
For engineers reviewing the PAM2305CGF180 datasheet, PAM2305CGF180 pinout, PAM2305CGF180 application, or PAM2305CGF180 equivalent, this device is selected for battery-powered systems requiring high efficiency (>96%), compact DFN2x2-6 packaging, precise 1.8V rail generation, and low-noise PSM/PWM hybrid operation across wide VIN and load ranges.
Technical Context
The PAM2305CGF180 implements current-mode control with a 1.5MHz fixed-frequency PWM architecture and automatic transition to pulse-skipping mode below ~100mA load to minimize IQ. Its internal synchronous rectifier eliminates external diode losses, and the 0.6V feedback reference enables accurate output regulation via resistor divider or fixed-voltage configuration.
Under-voltage lockout (UVLO) activates below ~2.3V VIN to prevent deep battery discharge, while cycle-by-cycle peak current limiting (1.5A typ) and thermal shutdown at 150°C ensure robust fault protection. The EN pin provides logic-level on/off control with 1.5V high-threshold and 0.3V low-threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±3% - stable core voltage for 1.8V logic, memory, or RF ICs without external resistors. |
| Input Voltage Range | 2.5V to 5.5V - supports single Li+/Li-Po cell, USB VBUS, or dual alkaline/NiMH batteries. |
| Max Output Current | 1A continuous - sufficient for microcontrollers, sensors, and wireless SoCs in space-constrained designs. |
| Quiescent Current | 40µA typical - extends battery runtime in standby/sleep modes of portable electronics. |
| Switching Frequency | 1.5MHz nominal - enables use of small 2.2µH inductors and ceramic capacitors for minimal footprint. |
| Feedback Reference | 0.6V ±2% - sets output accuracy and allows flexible resistor-based adjustment if used in adjustable variant. |
| Shutdown Current | <0.1µA - isolates input from output during system sleep, eliminating parasitic drain. |
Pinout & Package
Package: DFN2x2-6L (2.0mm × 2.0mm, 0.5mm pitch, exposed thermal pad). Compact footprint ideal for wearables, IoT sensors, and slim mobile peripherals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Main DC input (2.5–5.5V); connects to bulk input capacitor and must be routed with low-inductance path. |
| GND | Ground Reference | Power and signal ground; ties to exposed thermal pad for optimal heat dissipation and noise control. |
| EN | Enable Control Input | Logic-compatible enable: >1.5V = active, <0.3V = shutdown; pulls down to GND via resistor for default-off behavior. |
| VOUT/FB | Output Feedback Node | Internal 0.6V reference point; in fixed-output version, internally connected to set 1.8V - no external divider required. |
| SW | Switch Node | Drain connection of internal high-side P-MOSFET and low-side N-MOSFET; routes to inductor and requires tight layout to minimize EMI. |
| NC | No Connection | Unused terminal (Pin 1); must remain unconnected and not tied to any net to avoid malfunction. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated P- and N-channel MOSFETs eliminate external Schottky loss, enabling >96% peak efficiency at 1A. |
| Pulse-Skipping Modulation (PSM) | Reduces IQ to 40µA under light load while maintaining regulation - critical for battery longevity in intermittent-use devices. |
| Thermal Shutdown & Hysteresis | Shuts down at 150°C junction temperature and restarts at 120°C, preventing damage during sustained overload or poor PCB cooling. |
| Soft-Start Function | Digital-controlled ramp limits inrush current and prevents input voltage sag or output overshoot during power-up. |
| Short-Circuit Protection | Peak current limit clamps switch current to 1.5A; under short, device pulses at 400kHz with minimal duty cycle to limit average input current to ~200mA. |
Applications
| Wearable Fitness Tracker | Bluetooth Low Energy Module |
|---|---|
|
Use Scenario: Continuous heart-rate monitoring with periodic BLE advertising bursts and deep-sleep intervals. IC Role / Device Role: Primary 1.8V supply for ARM Cortex-M0+ MCU and optical sensor ASIC. Use Value: PSM mode maintains 40µA IQ during 95% sleep time, extending coin-cell life beyond 6 months. |
Use Scenario: Compact BLE 5.0 transceiver module powered by CR2032 or single Li-Po cell. IC Role / Device Role: Regulates stable 1.8V rail for RF front-end and digital baseband under dynamic TX/RX load. Use Value: 1.5MHz switching enables 2.2µH inductor + 10µF ceramic solution fitting within 8mm² PCB area. |
| Digital Voice Recorder | Smart Remote Control |
|
Use Scenario: Battery-operated recorder using flash memory and MEMS microphone, with variable audio processing load. IC Role / Device Role: Powers 1.8V NAND interface and codec DSP core across 10mA–800mA dynamic current range. Use Value: Seamless PWM-to-PSM transition ensures <10mV output ripple at light load and <50mV at full 1A load. |
Use Scenario: IR/RF remote with OLED display, button matrix, and sub-GHz transceiver, running on two AAA cells. IC Role / Device Role: Generates clean 1.8V for display driver and transceiver IC, rejecting battery voltage droop during keypress bursts. Use Value: UVLO prevents operation below 2.3V, protecting alkaline cells from irreversible capacity loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 1.8V fixed, 1.7MHz, 45µA IQ, but uses external compensation and lacks integrated soft-start. | Requires additional RC network for loop stability; less suitable for rapid prototyping or space-constrained layouts. | Choose when design demands tighter load transient response and board area permits extra passives. |
| RT8059GJ6 | 1.8V fixed, 1.5MHz, 55µA IQ, includes power-good flag but no PSM mode - higher light-load IQ. | Lacks pulse-skipping, resulting in ~2× higher standby current vs. PAM2305CGF180 in always-on sensing nodes. | Prefer where deterministic timing and PG indication outweigh battery-life optimization. |
Compared with TPS62231DRYR and RT8059GJ6, the PAM2305CGF180 delivers superior battery runtime via its 40µA PSM mode and requires zero external feedback components for 1.8V operation - reducing BOM count and layout complexity in cost-sensitive portable designs.
Availability
PAM2305CGF180 is available at Aetrix Electronics and suitable for wearable electronics, Bluetooth modules, digital voice recorders, and smart remote controls requiring stable component supply, long-term lifecycle support, and RoHS-compliant DFN packaging.
Supply support for PAM2305CGF180 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 PAM2305 belongs to Diodes' high-efficiency DC-DC converter product line, engineered specifically for portable and battery-powered systems demanding ultra-low IQ, small footprint, and seamless light-to-heavy load performance.
FAQ
What is the maximum recommended output current for PAM2305CGF180 in DFN2x2-6 package?
The DFN2x2-6 package supports up to 1A continuous output current at ambient temperatures ≤60°C with adequate PCB copper area (≥100mm² 2oz Cu thermal pad). At 25°C ambient, thermal limits allow full 1A; above 60°C, derating is required per θJA = 68°C/W and TJ(max) = 125°C.
Can PAM2305CGF180 be used with ceramic input and output capacitors?
Yes - it is fully compatible with X5R/X7R ceramic capacitors. Recommended values are 10µF input and 10µF output, both rated ≥6.3V. Ceramic caps reduce size, lower ESR, and improve ripple suppression versus electrolytics, aligning with the device's 1.5MHz switching frequency.
Does PAM2305CGF180 require external feedback resistors for 1.8V output?
No - the "180" suffix indicates factory-trimmed fixed 1.8V output. Internal resistor divider is laser-trimmed to achieve ±3% accuracy; no external FB resistors are needed, simplifying layout and reducing component count.
How does the EN pin behave during power sequencing?
The EN pin has CMOS-compatible thresholds: device enables when EN ≥1.5V and shuts down when EN ≤0.3V. With no pull-up, EN floats high due to internal bias; for guaranteed startup, tie EN directly to VIN or use a resistor divider from VIN to GND to set precise enable voltage.
PAM2305CGF180 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- 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:
- 6-DFN (2x2)
PAM2305CGF180 FAQ
1.How can I place an order for PAM2305CGF180 through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM2305CGF180 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 PAM2305CGF180 reliable?
The price and inventory of PAM2305CGF180 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2305CGF180 is usually 5 days.
3.What payment methods are accepted for PAM2305CGF180?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2305CGF180 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM2305CGF180?
PAM2305CGF180 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM2305CGF180 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 PAM2305CGF180?
For technical support, including PAM2305CGF180 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2305CGF180 requirements.
6.How does Aetrix verify that PAM2305CGF180 is sourced from the original manufacturer or authorized distributors?
All PAM2305CGF180 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 PAM2305CGF180 meets industry standards.
7.What is the process for return or replacement of PAM2305CGF180?
All PAM2305CGF180 units undergo pre-shipment inspection (PSI). If there is an issue with PAM2305CGF180, 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 PAM2305CGF180 part is unused and in its original packaging.
Return procedure for PAM2305CGF180:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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