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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Diodes Incorporated PAM2305CGF150

Name: PAM2305CGF150
Brand: Diodes Incorporated
SKU: PAM2305CGF150
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PAM2305CGF150

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: -

Datasheet:: PAM2305CGF150.pdf

Description:: IC REG

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PAM2305CGF150 from Diodes Incorporated is a 1A synchronous step-down DC-DC converter with adjustable output (set to 1.5V), 2.5–5.5V input range, 1.5MHz fixed-frequency PWM/PSM hybrid control, 0.6V internal reference, and integrated high-side P-MOSFET + low-side N-MOSFET. It delivers up to 96% efficiency in portable battery-powered systems such as wireless handsets and digital frames.

For engineers reviewing the PAM2305CGF150 datasheet, PAM2305CGF150 pinout, PAM2305CGF150 application, or PAM2305CGF150 equivalent, key selection criteria include light-load quiescent current (40µA typ), shutdown current (<0.1µA), EN threshold (1.5V high / 0.3V low), thermal shutdown (150°C), and DFN2x2-6 package thermal resistance (θJA = 68°C/W).

Technical Context

The PAM2305CGF150 employs current-mode control with constant-frequency PWM at full load and automatic transition to pulse-skipping modulation (PSM) under light load to minimize quiescent current. Its internal 0.6V reference feeds an error amplifier that compares FB voltage against this threshold to regulate output via duty-cycle adjustment of the 1.5MHz oscillator.

It integrates both power switches - a 0.45Ω (typ) P-channel high-side MOSFET and a 0.5Ω (typ) N-channel synchronous rectifier - enabling high-efficiency operation without external diodes. Protection includes cycle-by-cycle peak current limiting (1.5A typ), under-voltage lockout (UVLO), 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.
Output Voltage	1.5V (pre-set) - set by internal resistor divider; feedback threshold is 0.6V ±2%.
Max Output Current	1A continuous - limited by thermal dissipation in DFN2x2-6 package (PD ≤ 980mW @ TA=25°C).
Switching Frequency	1.5MHz (typ) - enables compact external LC filter (e.g., 2.2µH inductor + 10µF ceramic caps).
Quiescent Current	40µA (typ) - ensures >100h runtime on 400mAh battery at 100µA system standby load.
Shutdown Current	<0.1µA - disconnects VIN from VOUT and disables internal bias, preserving battery charge.
Efficiency	96% (typ) at 3.6V_IN/1.5V_OUT/500mA - achieved via synchronous rectification and low R_DS(ON) switches.

Pinout & Package

Package: DFN2x2-6L (2.0mm × 2.0mm, 0.5mm pitch, exposed thermal pad). Pin 1 marked by dot; pin 1 is EN, pin 2 is GND, pin 3 is VIN, pin 4 is SW, pin 5 is VOUT/FB, pin 6 is NC.

Pin/Terminal	Circuit Role	Design Meaning
VIN	Main power supply input	Accepts 2.5–5.5V; connects to input capacitor (10µF ceramic) placed adjacent to pin for low-impedance AC return path.
GND	Power and signal ground reference	Must be tied directly to PCB thermal pad and input/output capacitor (-) plates to minimize noise coupling into FB node.
EN	Enable control input	Logic-high (>1.5V) enables regulation; logic-low (<0.3V) forces shutdown with <0.1µA draw; internal pull-down ensures default-off.
VOUT/FB	Feedback voltage sensing	Monitors output via internal 0.6V reference; for fixed 1.5V version, internal divider replaces external resistors - no external R1/R2 required.
SW	Switch node	Drain connection of internal high-side P-MOSFET and low-side N-MOSFET; requires tight layout with minimal trace area to reduce EMI and switching losses.
NC	No connection	Pin 6 is unconnected internally; must remain floating or grounded per layout best practice - not used for thermal relief.

Key Features

Feature	Design Value
Synchronous rectification	Eliminates external Schottky diode, reducing conduction loss and improving efficiency by ~8% vs. asynchronous designs at 500mA.
Hybrid PWM/PSM mode	Automatically switches from 1.5MHz PWM to burst-mode PSM below ~10mA load, cutting IQ to 40µA while maintaining regulation.
Integrated soft-start	Digitally ramps switch current in steps to limit inrush; prevents input voltage sag and output overshoot during startup.
Thermal shutdown with hysteresis	Shuts down at 150°C junction temperature and resumes only after cooling to 120°C - prevents thermal runaway in sealed enclosures.
UVLO protection	Disables regulator when VIN drops below UVLO threshold (~2.3V), preventing deep discharge of Li+ cells and system brownout.

Applications

Wireless Handset Power Rail

Digital Photo Frame Core Supply

Use Scenario: Powers baseband processor core (1.5V @ 600mA) from single Li+ cell in compact handset design.

IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 1.5V rail with fast transient response to CPU load changes.

Use Value: 96% efficiency extends talk time; 40µA quiescent current preserves standby battery life over weeks.

Use Scenario: Supplies 1.5V to LCD controller and memory interface in wall-powered but battery-backed digital frame.

IC Role / Device Role / Timing Role: Fixed-output DC-DC converter replacing linear regulator to reduce heat and improve energy efficiency.

Use Value: Eliminates 0.5W dissipation seen with LDO at 600mA, enabling fanless, slim enclosure design.

USB-Powered Portable Scanner

Bluetooth Audio Module Supply

Use Scenario: Generates 1.5V for CMOS image sensor and ADC in handheld scanner powered via USB 5V.

IC Role / Device Role / Timing Role: Input-to-output step-down converter with tight line/load regulation (±0.5% total).

Use Value: Maintains <±1% output accuracy across 4.5–5.5V USB input variation, ensuring consistent ADC reference stability.

Use Scenario: Powers Bluetooth SoC RF/analog section in wearable earbud with strict EMI limits.

IC Role / Device Role / Timing Role: High-frequency (1.5MHz) buck converter minimizing low-frequency ripple interference with 2.4GHz radio.

Use Value: Switching noise falls outside critical 2.4–2.48GHz band; ceramic input/output caps suppress residual ripple to <5mV_pp.

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	1.5V fixed, 1.7–6.5V input, 1.8MHz, 35µA IQ, DSBGA6 package (1.2×1.2mm)	Higher input range supports wider source flexibility; smaller package but lower thermal margin (θJA = 120°C/W)	Select if board space is constrained and input may exceed 5.5V; verify thermal performance at 1A in target layout.
RT8059GJ6	1.5V fixed, 2.5–5.5V input, 1.5MHz, 55µA IQ, SOT-23-6 package	Asynchronous (external diode required); larger footprint; higher dropout at light load due to diode V_F	Choose only if cost sensitivity outweighs efficiency needs; avoid in battery-critical applications due to 55µA IQ and diode loss.

Compared with TPS62231DRYR and RT8059GJ6, the PAM2305CGF150 offers superior thermal performance in DFN2x2-6 (θJA = 68°C/W), lowest light-load IQ among the three, and fully integrated synchronous switching - making it optimal for thermally dense, battery-sensitive portable designs.

Availability

PAM2305CGF150 is available at Aetrix Electronics and suitable for wireless handsets, digital photo frames, USB-powered scanners, and Bluetooth audio modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for PAM2305CGF150 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the US.

The PAM2305 belongs to Diodes' Power Management product line, engineered specifically for high-efficiency, low-quiescent-current DC-DC conversion in space-constrained portable electronics.

FAQ

What is the maximum continuous output current for PAM2305CGF150 in DFN2x2-6 package?

The DFN2x2-6 package supports up to 1A continuous output current under typical conditions (TA = 25°C, 2-layer PCB, no forced airflow). At 1A and 3.6V_IN/1.5V_OUT, power dissipation is ~210mW; with θJA = 68°C/W, junction rise is ~14°C - well within the 125°C max operating limit. Derating is required above 60°C ambient.

Can PAM2305CGF150 operate with input voltage lower than 2.5V?

No - the absolute minimum input voltage is 2.5V per datasheet Recommended Operating Conditions. Below this, UVLO prevents startup, and internal bias circuits may malfunction. At 2.4V, the device remains disabled; attempting operation risks unstable regulation or failure to maintain 1.5V output under load.

Is an external feedback resistor network required for PAM2305CGF150?

No - the "150" suffix indicates factory-trimmed 1.5V fixed output. Internal resistor divider sets VFB = 0.6V and scales output to exactly 1.5V; no external R1/R2 is needed or recommended. Adding external resistors would disrupt regulation and void accuracy guarantees.

How does the PAM2305CGF150 behave during short-circuit events?

Under output short, the device enters foldback mode: peak current is limited to 1.5A (typ), switching frequency drops to ~400kHz, and average input current is clamped to ~200mA. This limits power dissipation and prevents thermal damage while maintaining safe operating conditions until fault clears.

PAM2305CGF150 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

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Voltage - Input (Min):: -

Voltage - Input (Max):: -

Voltage - Output (Min/Fixed):: -

Voltage - Output (Max):: -

Current - Output:: -

Frequency - Switching:: -

Synchronous Rectifier:: -

Operating Temperature:: -

Grade:: -

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PAM2305CGF150 FAQ

1.How can I place an order for PAM2305CGF150 through Aetrix?

Please submit a Request for Quotation (RFQ) for PAM2305CGF150 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 PAM2305CGF150 reliable?

The price and inventory of PAM2305CGF150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2305CGF150 is usually 5 days.

3.What payment methods are accepted for PAM2305CGF150?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2305CGF150 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PAM2305CGF150?

PAM2305CGF150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PAM2305CGF150 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 PAM2305CGF150?

For technical support, including PAM2305CGF150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2305CGF150 requirements.

6.How does Aetrix verify that PAM2305CGF150 is sourced from the original manufacturer or authorized distributors?

All PAM2305CGF150 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 PAM2305CGF150 meets industry standards.

7.What is the process for return or replacement of PAM2305CGF150?

All PAM2305CGF150 units undergo pre-shipment inspection (PSI). If there is an issue with PAM2305CGF150, 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 PAM2305CGF150 part is unused and in its original packaging.

Return procedure for PAM2305CGF150:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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