PAM2305BJE250

Part: PAM2305 — Diodes Incorporated

Type: Synchronous Step-Down (Buck) DC-DC Converter

Description: 2.5–5.5 V input, 1 A step-down current-mode DC-DC converter with internal synchronous rectifier, 1.5 MHz switching frequency, 40 μA typical quiescent current and up to 96% efficiency. Not recommended for new designs (AP61100 is the suggested replacement).

Operating Conditions:

• Supply voltage: 2.5–5.5 V
• Operating temperature: -40 to +85 °C
• Junction temperature range: -40 to +125 °C
• Output voltage: 0.6 V to VIN (adjustable), or preset 3.3 V, 2.8 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V

Absolute Maximum Ratings:

• Max input voltage: 6.0 V (-0.3 to +6.0 V)
• EN, FB pin voltage: -0.3 to VIN
• SW pin voltage: -0.3 to (VIN + 0.3) V
• Max junction temperature: +150 °C
• Storage temperature: -65 to +150 °C
• Soldering temperature: +300 °C, 5 s

Key Specs:

• Feedback voltage VFB: 0.588 / 0.6 / 0.612 V (min/typ/max)
• Output voltage accuracy: ±3% (IO = 100 mA)
• Quiescent current: 40 μA typ, 70 μA max (no load)
• Shutdown current: 0.1 μA typ, 1 μA max (VEN = 0 V)
• Oscillator frequency: 1.2 / 1.5 / 1.8 MHz (min/typ/max); 500 kHz typ when VFB = 0 V or VO = 0 V
• Peak inductor current: 1.5 A typ (VIN = 3 V)
• RDS(ON): 0.3 Ω typ / 0.45 Ω max (P-MOSFET); 0.35 Ω typ / 0.5 Ω max (N-MOSFET) at 100 mA
• Load regulation: 0.5% typ, 1.5% max (IO = 1 mA to 800 mA)
• EN thresholds: high ≥ 1.5 V, low ≤ 0.3 V
• Overtemperature protection: +150 °C trip, 30 °C hysteresis
• θJA: 250 °C/W (TSOT25), 68 °C/W (U-DFN2020-6), 35 °C/W (QFN3x3-16L)

Features:

• Efficiency up to 96%
• Output current up to 1 A (TSOT25 limited by power dissipation)
• Constant-frequency PWM with Pulse-Skipping Modulation (PSM) for light-load efficiency
• Internal synchronous rectifier and power switch
• Soft-start
• Undervoltage lockout
• Short-circuit protection
• Thermal shutdown
• 100% duty cycle operation
• Pb-free packages

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

• 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/

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

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.

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.)

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