MP2344
Synchronous Step-Down ConverterThe MP2344 is a synchronous step-down converter from Monolithic Power Systems. View the full MP2344 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official MP2344 datasheet (PDF) — the source this page was extracted from.
MP2344 Key Specifications
| Parameter | Value |
|---|---|
| Case/Package | VSSOP |
| Output Current | 2A |
| Switching Frequency | 600kHz |
| Function | Step-Down |
| Height - Seated (Max) | 1 mm |
| Length | 2.9 mm |
| Lifecycle Status | Production (Last Updated: 2 years ago) |
| Manufacturer Lifecycle Status | ACTIVE (Last Updated: 2 years ago) |
| Max Input Voltage | 26 V |
| Max Operating Temperature | 125 °C |
| Max Output Current | 2 A |
| Max Output Voltage | 24.18 V |
| Max Switching Frequency | 700 kHz |
| Min Input Voltage | 7.5 V |
| Min Operating Temperature | -40 °C |
| Min Output Voltage | 3.3 V |
| Mounting Type | Surface Mount |
| Nominal Input Voltage | 12 V |
| Number of Circuits | 1 |
| Number of Outputs | 1 |
| Number of Terminals | 6 |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | SOT-23-6 Thin, TSOT-23-6 |
| Packaging | Cut Tape |
| REACH SVHC | Unaffected |
| RoHS | Compliant |
| Standard Pack Qty | 3000 |
| Supplier Device Package | TSOT-23-6 |
| Synchronous Rectifier | Yes |
| Terminal Pitch | 950 µm |
| Topology | Buck |
| Topology | Buck |
| Input Voltage (Max) | 26V |
| Input Voltage (Min) | 7.5V |
| Output Voltage (Max) | 24.2V |
| Output Voltage | 3.3V |
| Width | 1.6 mm |
MP2344 Overview
Part: MP2344GJ-Z — Monolithic Power Systems (MPS)
Type: Synchronous Step-Down (Buck) Converter
Description: 7.5–26 V input, 2 A synchronous step-down converter with 95 mΩ/45 mΩ integrated MOSFETs, 600 kHz fixed switching frequency and low-EMI optimization in a TSOT23-6 package.
Operating Conditions:
- Supply voltage (VIN): 7.5–26 V
- Operating junction temperature: -40 to +125 °C
- Output voltage: 3.3 V to VIN × D(MAX)
- Switching frequency: 600 kHz fixed (CCM)
Absolute Maximum Ratings:
- Max supply voltage (VIN): 28 V
- Max SW voltage: 28 V (30 V for <10 ns)
- Max junction temperature: 150 °C
- Storage temperature: -65 to 150 °C
- Continuous power dissipation (TA = 25 °C): 1.25 W
- ESD: HBM ±2000 V, CDM ±1000 V
Key Specs:
- Feedback voltage: 775 / 791 / 807 mV (min/typ/max)
- Quiescent supply current: 170 μA typ (VFB = 1 V)
- HS / LS switch on resistance: 95 mΩ / 45 mΩ typ
- Current limit: 3 A min (duty cycle 40%, TJ = 25 °C)
- Oscillator frequency: 500 / 600 / 700 kHz (VFB = 750 mV)
- Maximum duty cycle: 93% typ; minimum on-time 90 ns typ
- VIN UVLO rising threshold: 5.2 / 6.3 / 7.5 V, hysteresis 470 mV typ
- Soft-start time: 0.8 / 1.5 / 2.2 ms (10% to 90%)
- Thermal shutdown: 150 °C typ, 20 °C hysteresis
- Switch leakage: 1 μA max
Features:
- Wide 7.5–26 V operating input range
- 2 A load current
- 95 mΩ/45 mΩ low-RDS(ON) internal power MOSFETs
- Internal power-save mode (AAM) for light load
- Optimized switching edge and SW anti-ringing for low EMI
- 600 kHz fixed switching frequency in CCM
- Internal soft start
- Over-current protection with hiccup mode
- Thermal shutdown
- Output adjustable from 3.3 V
Applications:
- RF-enabled devices
- Stand-by power supply
- White goods
- Flat-panel televisions and monitors
Package:
- TSOT23-6 (6-pin), MSL rating 1; tape & reel suffix -Z
MP2344 Features
- Wide 7.5V to 26V Operating Input Range
- 2A Load Current
- 95m Ω /45m Ω Low RDS(ON) Internal Power MOSFETs
- Internal Power-Save Mode for Light Load
- Optimized for Low EMI
- 600kHz Fixed Switching Frequency at CCM
- Internal Soft Start
- Thermal Shutdown
- Over-Current Protection (OCP) and Hiccup Mode
- Output Adjustable from 3.3V
- The MPL-AL-5050 Inductor Series Matches Best Performance
- Available in a TSOT23-6 Package
MP2344 Applications
- RF-Enabled Devices
- Stand-By Power Supply
- White Goods
- Flat-Panel Television and Monitors
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. 'MPS', the MPS logo, and 'Simple, Easy Solutions' are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
MP2344 Pin Configuration
| Pin # | Name | Description |
|---|---|---|
| 1 | IN | Supply voltage. The MP2344 operates from a +7.5V to +26V input rail. C1 is needed to decouple the input rail. Connect using wide PCB traces. |
| 2 | SW | Switch output. Connect using wide PCB traces. |
| 3 | GND | System ground. GND is the reference ground of the regulated output voltage. GND requires special consideration during PCB layout. Connect GND with copper traces and vias. |
| 4 | BST | Bootstrap. Connect a capacitor between SW and BST to form a floating supply across the high-side switch driver. |
| 5 | VCC | Internal LDO output. Decouple VCC with a 0.1 μ F to 0.22 μ F capacitor. VCC can be biased by an external 5V output voltage through a diode. |
| 6 | FB | Feedback. An external resistor divider from the output to GND tapped to FB sets the output voltage. To prevent a current-limit runaway during a short-circuit fault condition, the frequency foldback comparator lowers the oscillator frequency when the FB voltage is below 396mV. |
MP2344 Electrical Characteristics
VIN = 12V, TJ = -40°C to 125°C (7) , unless otherwise noted. Typical value is based on the average value when TJ = 25°C.
| Parameter | Symbol | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Supply current (quiescent) | I q | V FB = 1V | 170 | μ A | ||
| HS switch on resistance | HS RDS-ON | V BST-SW = 4V | 95 | m Ω | ||
| LS switch on resistance | LS RDS-ON | VCC = 4V | 45 | m Ω | ||
| Switch leakage | SW LKG | 1 | μ A | |||
| Current limit | I LIMIT | Duty cycle = 40%, T J = 25°C | 3 | A | ||
| Oscillator frequency | f SW | V FB = 750mV | 500 | 600 | 700 | kHz |
| Foldback frequency | f FB | V FB = 200mV | 0.2 | f SW | ||
| Maximum duty cycle | D MAX | V FB = 750mV | 93 | % | ||
| Minimum on time (8) | T ON_MIN | 90 | ns | |||
| Feedback voltage | V FB | 775 | 791 | 807 | mV | |
| Feedback current | I FB | V FB = 820mV | 10 | 50 | nA | |
| V IN under-voltage lockout threshold rising | INUV Vth | 5.2 | 6.3 | 7.5 | V | |
| V IN under-voltage lockout threshold hysteresis | INUV HYS | 470 | mV | |||
| VCC regulator | V CC | 4 | V | |||
| VCC load regulation | I CC = 5mA | 1.5 | % | |||
| Soft-start period | T SS | 10% to 90% | 0.8 | 1.5 | 2.2 | ms |
| Thermal shutdown (8) | T SD | 150 | °C | |||
| Thermal hysteresis (8) | T SD_HYS | 20 | °C |
MP2344 Absolute Maximum Ratings
| Parameter | Limit |
|---|---|
| V IN | -0.3V to +28V |
| V SW | -0.6V (-5V < 10ns) to +28V (30V < 10ns) |
| V BST | V SW + 6V |
| All other pins | -0.3V to +6V |
| Continuous power dissipation (T A = +25°C) (2) (4) | 1.25W |
| Junction temperature | 150°C |
| Lead temperature | 260°C |
| Storage temperature | -65°C to 150°C |
| ESD Rating | |
| Human-body model (HBM) | ±2000V |
| Charged-device model (CDM) | ±1000V |
| Recommended Operating Conditions (3) | |
| Supply voltage (V IN ) | 7.5V to 26V Output voltage (V OUT )..............3.3V to V IN x D |
| MAX Operating junction temp (T J ) | -40°C to +125°C |
MP2344 Thermal Information
TSOT23-6
EV2344-J-00A (5) …………….62…....24......°C/W
JESD51-7 (6) ………………...100……55.....°C/W
MP2344 Typical Application
Figure 7: 5V/2A Output
Figure 8: 3.3V/2A Output
MP2344 Package Information
TOP VIEW
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 |
|---|---|---|
| MP2344GJ | Monolithic Power Systems | TSOT23-6 |
| MP2344GJ-Z | Monolithic Power Systems | SOT-23-6 Thin, TSOT-23-6 |
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
- TPS54202 – Texas Instruments, Synchronous Buck Converter
- AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
All Switching Regulators (Buck) datasheetsAll Monolithic Power Systems datasheets (40)
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