PAM2305
Step-Down DC-DC ConverterThe PAM2305 is a step-down dc-dc converter from Diodes Incorporated. View the full PAM2305 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official PAM2305 datasheet (PDF) — the source this page was extracted from.
Manufacturer
Diodes IncorporatedCategory
Switching Regulators (Buck)Package
TSOT25, QFN3x3, QFN3x3-16L, U-DFN2020-6 (Type C)
PAM2305 Key Specifications
| Parameter | Value |
|---|---|
| Regulated feedback voltage | 0.588 V (min), 0.6 V (typ), 0.612 V (max) |
| 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 MHz (min), 1.5 MHz (typ), 1.8 MHz (max) (VO = 100%) |
| Peak inductor current | 1.5 A (typ) (VIN = 3 V, VFB = 0.5 V or VO = 90%) |
| P-MOSFET on-resistance | 0.3 Ω (typ), 0.45 Ω (max) (IDS = 100 mA) |
| N-MOSFET on-resistance | 0.35 Ω (typ), 0.5 Ω (max) (IDS = 100 mA) |
| Output voltage accuracy | -3% to +3% (IO = 100 mA) |
PAM2305 Overview
Part: PAM2305
Type: Step-Down DC-DC Converter
Description: 2.5–5.5 V input, 1 A synchronous step-down DC-DC converter with 1.5 MHz switching frequency and up to 96% efficiency.
Operating Conditions:
- Supply voltage: 2.5 to 5.5 V
- Operating temperature: -40 to +85 °C
- Junction temperature: -40 to +125 °C
- Output voltage range: 0.6 V to VIN
Absolute Maximum Ratings:
- Max supply voltage: 6.0 V
- Max junction/storage temperature: 150 °C
Key Specs:
- Regulated feedback voltage: 0.588 V (min), 0.6 V (typ), 0.612 V (max)
- 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 MHz (min), 1.5 MHz (typ), 1.8 MHz (max) (VO = 100%)
- Peak inductor current: 1.5 A (typ) (VIN = 3 V, VFB = 0.5 V or VO = 90%)
- P-MOSFET on-resistance: 0.3 Ω (typ), 0.45 Ω (max) (IDS = 100 mA)
- N-MOSFET on-resistance: 0.35 Ω (typ), 0.5 Ω (max) (IDS = 100 mA)
- Output voltage accuracy: -3% to +3% (IO = 100 mA)
Features:
- Efficiency up to 96%
- Output current up to 1 A
- Internal synchronous rectifier
- 1.5 MHz switching frequency
- Pulse-Skipping Modulation (PSM) mode for light load efficiency
- Soft start and under-voltage lockout
- Cycle-by-cycle short circuit protection
- Thermal shutdown protection
Applications:
- Cellular phone
- Portable electronics
- Wireless devices
- Cordless phone
- Computer peripherals
- Battery powered widgets
- Electronic scales
- Digital frame
Package:
- TSOT25 (5-pin)
- DFN2x2-6L (6-pin)
- QFN3x3-16L (16-pin)
PAM2305 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
PAM2305 Applications
- Cellular Phone
- Portable Electronics
- Wireless Devices
- Cordless Phone
- Computer Peripherals
- Battery Powered Widgets
- Electronic Scales
- Digital Frame
PAM2305
1A STEP-DOWN DC-DC CONVERTER
PAM2305 Pin Configuration
PAM2305 Electrical Characteristics
| Parameter | Symbol | Test Conditions | Test Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | V IN | 2.5 | 5.5 | V | |||
| Regulated Feedback Voltage | V FB | 0.588 | 0.6 | 0.612 | V | ||
| Reference Voltage Line Regulation | Δ V FB | 0.3 | %/V | ||||
| Regulated Output Voltage Accuracy | V O | I O = 100mA | I O = 100mA | -3 | +3 | % | |
| Peak Inductor Current | I PK | V IN = 3V,V FB = 0.5V or V O = 90% | V IN = 3V,V FB = 0.5V or V O = 90% | 1.5 | A | ||
| Output Voltage Line Regulation | LNR | V IN = 2.5V to 5V, I O = 10mA | V IN = 2.5V to 5V, I O = 10mA | 0.2 | 0.5 | %/V | |
| Output Voltage Load Regulation | LDR | I O = 1mA to 800mA | I O = 1mA to 800mA | 0.5 | 1.5 | % | |
| Quiescent Current | I Q | No load | No load | 40 | 70 | μA | |
| Shutdown Current | I SD | V EN = 0V | V EN = 0V | 0.1 | 1 | μA | |
| Oscillator Frequency | f OSC | V O = 100% | V O = 100% | 1.2 | 1.5 | 1.8 | MHz |
| f OSC | V FB = 0V or V O = 0V | V FB = 0V or V O = 0V | 500 | kHz | |||
| Drain-Source On-State Resistance | R DS(ON) | I DS = 100mA | P MOSFET | 0.3 | 0.45 | Ω | |
| Drain-Source On-State Resistance | R DS(ON) | I DS = 100mA | N MOSFET | 0.35 | 0.5 | Ω | |
| SW Leakage Current | I LSW | ±0.01 | 1 | μA | |||
| High | η | Efficiency | Efficiency | 96 | % | ||
| EN Threshold High | V EH | 1.5 | V | ||||
| EN Threshold Low | V EL | 0.3 | V | ||||
| EN Leakage Current | I EN | ±0.01 | μA | ||||
| Over Temperature Protection | OTP | 150 | °C | ||||
| OTP | OTH | Hysteresis | Hysteresis | 30 | °C |
PAM2305
PAM2305 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 V IN | V |
| 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, 5sec | °C |
PAM2305 Recommended Operating Conditions
| Parameter | Rating | Unit |
|---|---|---|
| Supply Voltage | 2.5 to 5.5 | V |
| Operation Temperature Range | -40 to +85 | °C |
| Junction Temperature Range | -40 to +125 | °C |
PAM2305 Thermal Information
| Parameter | Package | Symbol | Max | Unit |
|---|---|---|---|---|
| Thermal Resistance (Junction to Case) | TSOT25 (Note 1) | θ JC | 130 | °C/W |
| Thermal Resistance (Junction to Case) | DFN2x2-6 | θ JC | 25 | °C/W |
| Thermal Resistance (Junction to Case) | QFN3x3-16 | θ JC | 14 | °C/W |
| Thermal Resistance (Junction to Ambient) | TSOT25 | θ JA | 250 | °C/W |
| Thermal Resistance (Junction to Ambient) | DFN2x2-6 | θ JA | 68 | °C/W |
| Thermal Resistance (Junction to Ambient) | QFN3x3-16 | θ JA | 35 | °C/W |
| Internal Power Dissipation | TSOT25 | P D | 400 | mW |
| Internal Power Dissipation | DFN2x2-6 | P D | 980 | mW |
| Internal Power Dissipation | QFN3x3-16 | P D | 1470 | mW |
Note:
- The maximun output current for TSOT25 package is limited by internal power dissipation capacity as described in Application Information here inafter.
PAM2305
PAM2305
PAM2305 Typical Application
PAM2305 Package Information
PAM2305
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All Switching Regulators (Buck) datasheetsAll Diodes datasheets (217)
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