PAM2305
1A STEP-DOWN DC-DC CONVERTER
The PAM2305 is an electronic component from Diodes Incorporated. 1A STEP-DOWN DC-DC CONVERTER. View the full PAM2305 datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Diodes Incorporated
Overview
Part: PAM2305
Type: Step-Down DC-DC Converter
Key Specs:
- Input Voltage Range: 2.5V to 5.5V
- Output Voltage Range: 0.6V to input voltage (adjustable), or 3.3V, 2.8V, 2.5V, 1.8V, 1.5V, 1.2V (pre-set)
- Output Current: Up to 1A
- Efficiency: Up to 96%
- Quiescent Current: 40μA (typ)
- Switching Frequency: 1.5MHz
- Shutdown Current: Less than 0.1μA
Features:
- Efficiency up to 96%
- Only 40μA(typ) Quiescent Current
- Output Current: Up to 1A
- Internal Synchronous Rectifier
- 1.5MHz Switching Frequency
- Soft Start
- Under-Voltage Lockout
- Short Circuit Protection
- Thermal Shutdown
- 5-pin Small TSOT25, DFN2x2-6 Pin and QFN3x3-16 Pin Packages
- Pb-Free Package
- Power-saving Pulse-Skipping Modulation (PSM) mode
Applications:
- Cellular Phone
- Portable Electronics
- Wireless Devices
- Cordless Phone
- Computer Peripherals
- Battery Powered Widgets
- Electronic Scales
- Digital Frame
Package:
- TSOT25: 5-pin
- DFN2x2-6 Pin: 2x2 dimensions
- QFN3x3-16 Pin: 3x3 dimensions
Features
- Efficiency up to 96%
- Only 40μA(typ) Quiescent Current
- Output Current: Up to 1A
- Internal Synchronous Rectifier
- 1.5MHz Switching Frequency
- Soft Start
- Under-Voltage Lockout
- Short Circuit Protection
- Thermal Shutdown
- 5-pin Small TSOT25, DFN2x2-6 Pin and QFN3x3-16 Pin Packages
- Pb-Free Package
Applications
- Cellular Phone
- Portable Electronics
- Wireless Devices
- Cordless Phone
- Computer Peripherals
- Battery Powered Widgets
- Electronic Scales
- Digital Frame
Pin Configuration
Electrical Characteristics
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | - | 2.5 | - | 5.5 | V |
| Regulated Feedback Voltage | VFB | - | 0.588 | 0.6 | 0.612 | V |
| Reference Voltage Line Regulation | ΔVFB | VIN = 2.5V to 5.5V | - | 0.3 | - | %/V |
| Regulated Output Voltage Accuracy | VO | IO = 100mA | -3 | - | +3 | % |
| Peak Inductor Current | IPK | VIN = 3V, VFB = 0.5V or VO = 90% | - | 1.5 | - | A |
| Output Voltage Line Regulation | LNR | VIN = 2.5V to 5V, IO = 10mA | - | 0.2 | 0.5 | %/V |
| Output Voltage Load Regulation | LDR | IO = 1mA to 800mA | - | 0.5 | 1.5 | % |
| Quiescent Current | IQ | No load | - | 40 | 70 | μA |
| Shutdown Current | ISD | VEN = 0V | - | 0.1 | 1 | μ |
Absolute Maximum Ratings
These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground.
| Parameter | Rating | Unit |
|---|---|---|
| Input Voltage | -0.3 to +6.0 | V |
| EN, FB Pin Voltage | -0.3 to VIN | V |
| SW Pin Voltage | -0.3 to (VIN +0.3) | V |
| Junction Temperature | 150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Soldering Temperature | 300, 5sec | °C |
Recommended Operating Conditions
| Parameter | Rating | Unit |
|---|---|---|
| Supply Voltage | 2.5 to 5.5 | V |
| Operation Temperature Range | -40 to +85 | |
| Junction Temperature Range | -40 to +125 | °C |
Thermal Information
| Parameter | Package | Symbol | Max | Unit |
|---|---|---|---|---|
| TSOT25 (Note 1) | 130 | |||
| Thermal Resistance (Junction to Case) | DFN2x2-6 QFN3x3-16 TSOT25 | θJC | 25 14 250 | °C/W |
| Thermal Resistance (Junction to Ambient) | DFN2x2-6 QFN3x3-16 | θJA | 68 35 | |
| TSOT25 | 400 | mW | ||
| Internal Power Dissipation | DFN2x2-6 QFN3x3-16 | PD | 980 1470 |
Electrical Characteristics (@TA = +25°C, VIN = 3.6V, VO = 1.8V, CIN = 10μF, COUT = 10μF, L = 4.7μH, unless otherwise specified.)
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | - | 2.5 | - | 5.5 | V |
| Regulated Feedback Voltage | VFB | - | 0.588 | 0.6 | 0.612 | V |
| Reference Voltage Line Regulation | ΔVFB | VIN = 2.5V to 5.5V | - | 0.3 | - | %/V |
| Regulated Output Voltage Accuracy | VO | IO = 100mA | -3 | - | +3 | % |
| Peak Inductor Current | IPK | VIN = 3V, VFB = 0.5V or VO = 90% | - | 1.5 | - | A |
| Output Voltage Line Regulation | LNR | VIN = 2.5V to 5V, IO = 10mA | - | 0.2 | 0.5 | %/V |
| Output Voltage Load Regulation | LDR | IO = 1mA to 800mA | - | 0.5 | 1.5 | % |
| Quiescent Current | IQ | No load | - | 40 | 70 | μA |
| Shutdown Current | ISD | VEN = 0V | - | 0.1 | 1 | μ |
Typical Application
Fixed Output Voltage Adjustable Output Voltage
⎝
⎠
Package Information
| REF. | Millimeter |
|---|---|
| Min | |
| A | 1.10 MAX |
| A1 | O |
| A2 | 0.70 |
| C | 0.12REF |
| D | 2.70 |
| E | 2.60 |
| E1 | 1.40 |
| L | 0.45 REF. |
| L1 | 0.60 REF. |
| 0 | 00 |
| b | 0.30 |
| e | 0.95 REF. |
| e 1 | 1.90 REF |
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