MP2307
Synchronous Buck ConverterThe MP2307 is a synchronous buck converter from Monolithic Power Systems. View the full MP2307 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official MP2307 datasheet (PDF) — the source this page was extracted from.
MP2307 Key Specifications
| Parameter | Value |
|---|---|
| Efficiency | Up to 95% |
| Input Voltage Range | 4.75V to 23V |
| Peak Output Current | 4A |
| Switching Frequency | 340KHz |
| Output Voltage Range | 0.925V to 20V (Adjustable) |
| Shutdown Supply Current | 0.3μA (Typ), 3.0μA (Max) |
| Operating Supply Current | 1.3mA (Typ), 1.5mA (Max) |
| Continuous Output Current | 3A |
| Thermal Shutdown Temperature | 160°C |
| Integrated Low-Side MOSFET Rds(On) | 100mΩ |
| Integrated High-Side MOSFET Rds(On) | 100mΩ |
MP2307 Overview
Part: MP2307 — Monolithic Power Systems, Inc.
Type: Synchronous Rectified Step-Down Converter
Description: 4.75 V to 23 V input, 3 A continuous load current synchronous buck regulator with integrated 100 mΩ MOSFETs and up to 95% efficiency.
Operating Conditions:
- Supply voltage: 4.75 V to 23 V
- Operating temperature: -40°C to +85°C
- Output voltage range: 0.925 V to 20 V
Absolute Maximum Ratings:
- Max supply voltage: 26 V
- Max junction/storage temperature: 150 °C
Key Specs:
- Feedback Voltage: 0.900 V (min), 0.925 V (typ), 0.950 V (max) at 4.75 V ≤ VIN ≤ 23 V
- High-Side Switch On-Resistance: 100 mΩ (typ)
- Low-Side Switch On-Resistance: 100 mΩ (typ)
- Upper Switch Current Limit: 4.0 A (min), 5.8 A (typ) at minimum duty cycle
- Oscillation Frequency: 300 kHz (min), 340 kHz (typ), 380 kHz (max)
- Shutdown Supply Current: 0.3 μA (typ), 3.0 μA (max) at VEN = 0 V
- Quiescent Supply Current: 1.3 mA (typ), 1.5 mA (max) at VEN = 2.0 V, VFB = 1.0 V
- Input Under Voltage Lockout Threshold: 3.80 V (min), 4.05 V (typ), 4.40 V (max) (VIN rising)
Features:
- 3 A continuous output current, 4 A peak output current
- Integrated 100 mΩ power MOSFET switches
- Up to 95% efficiency
- Programmable soft-start
- Cycle-by-cycle over-current protection
- Fixed 340 kHz frequency
- Input under-voltage lockout
- Stable with low-ESR ceramic output capacitors
Applications:
- Distributed power systems
- FPGA, DSP, ASIC power supplies
- Networking systems
- Green electronics/appliances
- Notebook computers
Package:
- 8-pin SOICN with Exposed Pad (SOIC8N)
MP2307 Features
- 3A Continuous Output Current 4A Peak Output Current
- Wide 4.75V to 23V Operating Input Range
- Output Adjustable from 0.925V to 20V
- Integrated 100m Ω Power MOSFET Switches
- Up to 95% Efficiency
- Programmable Soft-Start
- Stable with Low ESR Ceramic Output Capacitors
- Cycle-by-Cycle Over Current Protection
- Fixed 340KHz Frequency
- Input Under Voltage Lockout
- Thermally Enhanced 8-Pin SOIC Package
MP2307 Applications
- Distributed Power Systems
- FPGA, DSP, ASIC Power Supplies
- Networking Systems
- Green Electronics/Appliances
- Notebook Computers
'MPS' and 'The Future of Analog IC Technology' are Registered Trademarks of Monolithic Power Systems, Inc.
MP2307_TAC01
MP2307 Pin Configuration
| Pin # | Name | Description |
|---|---|---|
| 1 | BS | High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel MOSFET switch. Connect a 0.01 μ F or greater capacitor from SW to BS to power the high side switch. |
| 2 | IN | Power Input. IN supplies the power to the IC, as well as the step-down converter switches. Drive IN with a 4.75V to 23V power source. Bypass IN to GND with a suitably large capacitor to eliminate noise on the input to the IC. See Input Capacitor . |
| 3 | SW | Power Switching Output. SW is the switching node that supplies power to the output. Connect the output LC filter from SW to the output load. Note that a capacitor is required from SW to BS to power the high-side switch. |
| 4 | GND | Ground (Connect the exposed pad to Pin 4). |
| 5 | FB | Feedback Input. FB senses the output voltage and regulates it. Drive FB with a resistive voltage divider connected to it from the output voltage. The feedback threshold is 0.925V. See Setting the Output Voltage . |
| 6 | COMP | Compensation Node. COMP is used to compensate the regulation control loop. Connect a series RC network from COMP to GND. In some cases, an additional capacitor from COMP to GND is required. See Compensation Components. |
| 7 | EN | Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on the regulator; low to turn it off. Attach to IN with a 100k Ω pull up resistor for automatic startup. |
| 8 | SS | Soft-Start Control Input. SS controls the soft-start period. Connect a capacitor from SS to GND to set the soft-start period. A 0.1 μ F capacitor sets the soft-start period to 15ms. To disable the soft-start feature, leave SS unconnected. |
MP2307 Electrical Characteristics
VIN = 12V, TA = +25°C, unless otherwise noted.
| Parameter | Symbol | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Shutdown Supply Current | V EN = 0V | 0.3 | 3.0 | μ A | ||
| Supply Current | V EN = 2.0V, V FB = 1.0V | 1.3 | 1.5 | mA | ||
| Feedback Voltage | V FB | 4.75V ≤ V IN ≤ 23V | 0.900 | 0.925 | 0.950 | V |
| Feedback Overvoltage Threshold | 1.1 | V | ||||
| Error Amplifier Voltage Gain (5) | A EA | 400 | V/V | |||
| Error Amplifier Transconductance | G EA | ∆ I C = ± 10 μ A | 820 | μ A/V | ||
| High-Side Switch On-Resistance (5) | R DS(ON)1 | 100 | m Ω | |||
| Low-Side Switch On-Resistance (5) | R DS(ON)2 | 100 | m Ω | |||
| High-Side Switch Leakage Current | V EN = 0V, V SW = 0V | 0 | 10 | μ A | ||
| Upper Switch Current Limit | Minimum Duty Cycle | 4.0 | 5.8 | A | ||
| Lower Switch Current Limit | From Drain to Source | 0.9 | A | |||
| COMP to Current Sense Transconductance | G CS | 5.2 | A/V | |||
| Oscillation Frequency | F osc1 | 300 | 340 | 380 | KHz | |
| Short Circuit Oscillation Frequency | F osc2 | V FB = 0V | 110 | KHz | ||
| Maximum Duty Cycle | D MAX | V FB = 1.0V | 90 | % | ||
| Minimum On Time (5) | T ON | 220 | ns | |||
| EN Shutdown Threshold Voltage | V EN Rising | 1.1 | 1.5 | 2.0 | V | |
| EN Shutdown Threshold Voltage Hysterisis | 220 | mV |
MP2307 Absolute Maximum Ratings
Supply Voltage VIN....................... -0.3V to +26V
Switch Voltage VSW................. -1V to VIN + 0.3V
Boost Voltage VBS..........VSW - 0.3V to VSW + 6V
All Other Pins................................. -0.3V to +6V
Junction Temperature...............................150°C
Lead Temperature....................................260°C
Storage Temperature .............-65°C to +150°C
MP2307 Recommended Operating Conditions
Input Voltage VIN............................ 4.75V to 23V Output Voltage VOUT .................... 0.925V to 20V Ambient Operating Temp .............. -40°C to +85°C
Thermal Resistance (3) θ JA θ JC SOIC8N .................................. 50 ...... 10... ° C/W
MP2307 Typical Application
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| MP2307DN | Monolithic Power Systems | — |
Other Switching Regulators (Buck)
- TPS54302 – Texas Instruments, Synchronous Step-Down Converter
- MAX20730 – Analog Devices, Synchronous Switching Regulator
- TLV62568 – Texas Instruments, Synchronous Buck Converter
- LM2596 – Texas Instruments, Step-Down Voltage Regulator
- TPS562200 – Texas Instruments, Synchronous Buck Converter
- AP63203WU – Diodes Incorporated, Synchronous Buck Converter
- AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
- LMR38010FDDAR – Texas Instruments, Synchronous Buck Converter
All Switching Regulators (Buck) datasheetsAll Monolithic Power Systems datasheets (40)
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