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PAM2305AAB250

Step-Down DC-DC Converter

The PAM2305AAB250 is a step-down dc-dc converter from Diodes Incorporated. View the full PAM2305AAB250 datasheet below including absolute maximum ratings.

Manufacturer

Diodes Incorporated

Category

Step-Down DC-DC Converter

Package

TSOT25

Overview

Part: PAM2305 — Diodes

Type: Step-Down Current-Mode DC-DC Converter

Description: 2.5–5.5V input, 1A step-down DC-DC converter with 1.5MHz switching frequency and up to 96% peak efficiency.

Operating Conditions:

  • Supply voltage: 2.5 to 5.5 V
  • Operating temperature: -40 to +85 °C
  • Junction temperature: -40 to +125 °C
  • Switching frequency: 1.5 MHz

Absolute Maximum Ratings:

  • Max input voltage: +6.0 V
  • Max junction temperature: +150 °C
  • Max storage temperature: -65 to +150 °C

Key Specs:

  • Input Voltage Range: 2.5 to 5.5 V
  • Regulated Feedback Voltage: 0.6 V (Min 0.588 V, Max 0.612 V)
  • Peak Inductor Current: 1.5 A (typ) (V IN = 3V, V FB = 0.5V or V O = 90%)
  • Quiescent Current: 40 μA (typ) (No Load)
  • Shutdown Current: 0.1 μA (typ) (V EN = 0V)
  • Oscillator Frequency: 1.5 MHz (typ) (V O = 100%)
  • Drain-Source On-State Resistance (P MOSFET): 0.3 Ω (typ) (DS = 100mA)
  • High Efficiency: 96 % (typ)

Features:

  • Efficiency up to 96%
  • Only 40μA (typ) Quiescent Current
  • Output Current: Up to 1A
  • Internal Synchronous Rectifier
  • 1.5MHz Switching Frequency
  • Soft-Start
  • Undervoltage Lockout
  • Short-Circuit Protection
  • Thermal Shutdown

Applications:

  • Cellular phones
  • Portable electronics
  • Wireless devices
  • Cordless phones
  • Computer peripherals
  • Battery-powered widgets
  • Electronic scales
  • Digital frames

Package:

  • TSOT25 (5-Pin)
  • U-DFN2020-6 (Type C)
  • QFN3x3-16L

Features

  • Efficiency up to 96%
  • Only 40μA (typ) Quiescent Current
  • Output Current: Up to 1A
  • Internal Synchronous Rectifier
  • 1.5MHz Switching Frequency
  • Soft -Start
  • Undervoltage Lockout
  • Short-Circuit Protection
  • Thermal Shutdown
  • 5-Pin Small TSOT25, U-DFN2020-6 (Type C) and QFN3x3-16L Pin Packages
  • Pb-Free Package
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Applications

  • Cellular phones
  • Portable electronics
  • Wireless devices
  • Cordless phones
  • Computer peripherals
  • Battery-powered widgets
  • Electronic scales
  • Digital frames

Pin Configuration

Absolute Maximum Ratings

Stresses greater than those listed under Absolute Maximum Ratings can cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to Absolute Maximum Ratings for extended periods can affect device reliability. All voltages are with respect to ground.

ParameterRatingUnit
Input Voltage-0.3 to +6.0V
EN, FB Pin Voltage-0.3 to V INV
SW Pin Voltage-0.3 to (V IN +0.3)V
Junction Temperature+150°C
Storage Temperature Range-65 to +150°C
Soldering Temperature+300, 5s°C

Recommended Operating Conditions

ParameterRating Unit
Supply Voltage2.5 to 5.5 V
Operation Temperature Range-40 to +85
Junction Temperature Range°C -40 to +125

Thermal Information

ParameterPackageSymbolMaxUnit
Thermal Resistance (Junction to Case)TSOT25 (Note 1)θ JC130°C/W
Thermal Resistance (Junction to Case)U-DFN2020-6 (Type C)θ JC25°C/W
Thermal Resistance (Junction to Case)QFN3x3-16Lθ JC14°C/W
Thermal Resistance (Junction to Ambient)TSOT25θ JA250°C/W
Thermal Resistance (Junction to Ambient)U-DFN2020-6 (Type C)θ JA68°C/W
Thermal Resistance (Junction to Ambient)QFN3x3-16Lθ JA35°C/W
Internal Power DissipationTSOT25P D400mW
Internal Power DissipationU-DFN2020-6 (Type C)P D980mW
Internal Power DissipationQFN3x3-16LP D1470mW

Note:

  1. The maximum output current for TSOT25 package is limited by internal power dissipation capacity as described in Application Information section.

PAM2305

PAM2305

Electrical Characteristics (@TA = +25°C, VIN = 3.6V, VO = 1.8V, CIN = 10μF, COUT = 10μF, L = 4.7μH, unless otherwise specified.)

ParameterSymbolTest ConditionsMinTypMaxUnit
Input Voltage RangeV IN-2.5-5.5V
Regulated Feedback VoltageV FB-0.5880.60.612V
Reference Voltage Line RegulationΔV FB--0.3-%/V
Regulated Output Voltage AccuracyV OI O = 100mA-3-+3%
Peak Inductor CurrentI PKV IN = 3V, V FB = 0.5V or V O = 90%-1.5-A
Output Voltage Line RegulationLNRV IN = 2.5V to 5V, I O = 10mA-0.20.5%/V
Output Voltage Load RegulationLDRI O = 1mA to 800mA-0.51.5%
Quiescent CurrentI QNo Load-4070μA
Shutdown CurrentI SDV EN = 0V-0.11μA
Oscillator Frequencyf OSCV O = 100%1.21.51.8MHz
Oscillator Frequencyf OSCV FB = 0V or V O = 0V-500-kHz
Drain-Source On-State ResistanceR DS(ON)DS = 100mA P MOSFET N MOSFET-0.30.45Ω
Drain-Source On-State ResistanceR DS(ON)DS = 100mA P MOSFET N MOSFET-0.350.5Ω
SW Leakage CurrentI LSW--±0.011μA
High Efficiencyη--96-%
EN Threshold HighV EH-1.5--V
EN Threshold LowV EL---0.3V
EN Leakage CurrentI EN--±0.01-μA
Overtemperature ProtectionOTP--+150-°C
OTP HysteresisOTH--+30-°C

Typical Application

Package Information

Please see http://www.diodes.com/package-outlines.html for the latest version.

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
PAM2305Diodes IncorporatedTSOT25
PAM2305-XXDiodes Incorporated—
PAM2305AAB120Diodes IncorporatedTSOT25
PAM2305AAB150Diodes IncorporatedTSOT25
PAM2305AAB180Diodes IncorporatedTSOT25
PAM2305AAB280Diodes IncorporatedTSOT25
PAM2305AAB330Diodes IncorporatedTSOT25
PAM2305AABADJDiodes IncorporatedTSOT25
PAM2305BJE120Diodes IncorporatedQFN3x3-16L
PAM2305BJE150Diodes IncorporatedQFN3x3-16L
PAM2305BJE180Diodes IncorporatedQFN3x3-16L
PAM2305BJE250Diodes IncorporatedQFN3x3-16L
PAM2305BJE280Diodes IncorporatedQFN3x3-16L
PAM2305BJE330Diodes IncorporatedQFN3x3
PAM2305BJEADJDiodes IncorporatedQFN3x3-16L
PAM2305CGF120Diodes IncorporatedU-DFN2020-6 (Type C)
PAM2305CGF150Diodes IncorporatedU-DFN2020-6 (Type C)
PAM2305CGF180Diodes IncorporatedU-DFN2020-6 (Type C)
PAM2305CGF250Diodes IncorporatedU-DFN2020-6 (Type C)
PAM2305CGF280Diodes IncorporatedU-DFN2020-6 (Type C)
PAM2305CGF330Diodes IncorporatedU-DFN2020-6 (Type C)
PAM2305CGFADJDiodes IncorporatedU-DFN2020-6 (Type C)
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