My Inquiry
My Account
Texas Instruments LM2830XMF
- Part No.:
- LM2830XMF
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM2830XMF.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2830XMF from Texas Instruments is a high-frequency, current-mode PWM step-down DC-DC regulator IC in a 5-pin SOT-23 package, delivering up to 1.0 A output current with 1.6 MHz fixed switching frequency, 0.6 V internal reference (±2%), and 130 mΩ PMOS switch. It regulates 3.0–5.5 V input to adjustable 0.6–4.5 V output in space-constrained USB-powered devices and set-top boxes.
For engineers reviewing the LM2830XMF datasheet, LM2830XMF pinout, LM2830XMF application, or LM2830XMF equivalent, key selection considerations include its 1.6 MHz operation enabling ultra-small external magnetics, internal soft-start limiting inrush current, thermal shutdown at 165°C, and EN pin control for low-quiescent-power sequencing in portable electronics.
Technical Context
The LM2830XMF uses constant-frequency current-mode PWM control with internal compensation and a 0.6 V ±2% bandgap reference. Its 1.6 MHz oscillator enables stable regulation with minimal external components while supporting duty cycles from 5% to 94% across the 3.0–5.5 V input range.
It integrates pulse-by-pulse overcurrent protection (1.2–1.75 A typical limit), undervoltage lockout (2.73 V turn-on, 2.3 V turn-off with 430 mV hysteresis), and output overvoltage protection triggered at 15% above VREF - all implemented without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz - enables use of ≤3.3 µH inductors and 22 µF ceramic capacitors for compact PCB layout |
| Output Current | 1.0 A continuous - supports core power in HDDs and USB peripherals without external current boosting |
| Input Voltage Range | 3.0 V to 5.5 V - compatible with single-cell Li-ion, USB 5 V, and regulated 3.3 V rails |
| Feedback Reference | 0.600 V ±2% - sets output voltage via resistor divider; enables 1.2 V, 1.8 V, 3.3 V configurations with <1% error |
| PMOS RDS(on) | 130 mΩ - limits conduction loss to ≤130 mW at 1 A, supporting >90% efficiency at mid-load |
| Quiescent Current | 5 mA (active), 30 nA (shutdown) - allows battery-backed standby modes with negligible drain |
| Thermal Shutdown | 165°C - protects against sustained overload or poor heatsinking; auto-recovery at ~150°C |
Pinout & Package
LM2830XMF is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm), optimized for thermal performance on standard PCBs with minimal copper area. The exposed pad variant is not used in this SOT-23 configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node output | Drives inductor and catch diode; swings from VIN to –0.3 V during off-time; requires tight layout to minimize EMI |
| GND | Signal and power ground | Primary return path for feedback network and internal regulators; must be connected near FB resistor bottom leg |
| FB | Feedback input | Senses output voltage via resistor divider; bias current <100 nA enables high-impedance dividers reducing quiescent load |
| EN | Enable control input | Active-high logic interface; threshold 1.8 V; must not float or exceed VIN + 0.3 V to prevent damage |
| VIN | Power input supply | Accepts 3.0–5.5 V; supplies both control circuitry and PMOS gate drive; requires local 22 µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Internal soft-start | Ramps reference from 0 V to 0.6 V over ~600 µs, limiting inrush current during power-up |
| Current-mode PWM control | Enables fast transient response and inherent cycle-by-cycle current limiting without external slope compensation |
| Overvoltage protection | Shuts down SW when FB exceeds 0.69 V (15% above 0.6 V), preventing damage to downstream 3.3 V logic |
| Undervoltage lockout | Blocks startup until VIN ≥2.73 V and holds operation down to 2.3 V, avoiding brownout instability |
| Thermal shutdown with hysteresis | Disables switching at 165°C junction temperature and resumes only after cooling to ~150°C |
Applications
| Local 5-V to Vcore Step-Down Converters | Core Power in HDDs |
|---|---|
Use Scenario: Regulating 5 V USB or adapter input to 1.2 V or 1.8 V CPU core rail in embedded controllers. IC Role / Device Role / Timing Role: Primary buck regulator providing tightly regulated, low-noise Vcore with fast load-step response. Use Value: 1.6 MHz switching minimizes inductor size to ≤3.3 µH, enabling integration into space-limited MCU modules. | Use Scenario: Supplying 3.3 V/1.0 A to spindle motor drivers and servo ICs in 2.5-inch hard disk drives. IC Role / Device Role / Timing Role: Main power stage delivering stable output under dynamic mechanical load transients. Use Value: Internal 130 mΩ PMOS and current-mode control maintain <±1% line/load regulation during rapid torque changes. |
| Set-Top Boxes | USB Powered Devices |
Use Scenario: Generating 3.3 V system rail from 5 V USB-C or wall adapter in consumer media boxes. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter powering SoC, memory, and HDMI PHY. Use Value: 93% peak efficiency at 500 mA reduces thermal load in sealed enclosures without heatsinks. | Use Scenario: Powering portable test equipment or Bluetooth audio dongles directly from USB 5 V. IC Role / Device Role / Timing Role: Compact, enable-controlled DC-DC stage enabling zero-power shutdown via host GPIO. Use Value: 30 nA shutdown current extends battery life in intermittently active USB peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2830ZMF | 3.0 MHz switching frequency, 195 mΩ RDS(on), 82–90% max duty cycle | Better suited for ultra-low-profile designs requiring <1.5 µH inductors; lower efficiency at high load due to higher RDS(on) | Select LM2830ZMF when board height is constrained and load current remains ≤700 mA. |
| TPS62231DRVR | 3.0 MHz, 2.05 V to 6.0 V input, 1.0 A, 25 µA quiescent current, integrated sync rectifier | Higher input range and lower IQ support wider battery chemistries; synchronous design eliminates catch diode | Choose TPS62231DRVR for battery-powered systems needing >100-hour standby and reduced BOM count. |
Compared with LM2830XMF, LM2830ZMF trades higher switching frequency for increased conduction loss, while TPS62231DRVR replaces the external Schottky diode with an integrated MOSFET to improve light-load efficiency and simplify layout - both require revalidation of loop stability and thermal design.
Availability
LM2830XMF is available at Aetrix Electronics and suitable for USB powered devices, set-top boxes, and local 5-V to Vcore step-down converters requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for LM2830XMF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC-DC conversion.
The LM2830XMF belongs to TI's LM2830 family of monolithic high-frequency buck regulators, designed specifically for space-constrained, cost-sensitive consumer and industrial applications demanding simple, robust, and efficient local power conversion.
FAQ
What is the recommended input capacitor for LM2830XMF?
The LM2830XMF datasheet specifies a 22 µF X5R ceramic capacitor rated for ≥6.3 V as the minimum input capacitance. This value ensures stable operation by limiting VIN droop during 1.6 MHz switching transients. Mount it as close as possible to the VIN and GND pins with short, wide traces to minimize ESL. MLCCs from TDK (C3216X5ROJ226M) or similar X5R/X7R types are validated in TI's reference designs for LM2830XMF.
Does LM2830XMF require an external catch diode?
Yes, LM2830XMF requires an external Schottky catch diode (e.g., Toshiba CRS08) connected between SW and GND. Unlike synchronous buck regulators, LM2830XMF uses an internal PMOS high-side switch and relies on this external diode to provide the freewheeling path during the off-time. Omitting it will cause catastrophic failure due to unclamped inductive kickback at the SW node.
How is output voltage set on LM2830XMF?
LM2830XMF output voltage is set using a resistive divider from VO to GND, connected to the FB pin. With a 0.600 V internal reference, the formula is VO = 0.6 × (1 + R1/R2). For 3.3 V output, use R2 = 15 kΩ and R1 = 67.5 kΩ (1% tolerance). The FB pin draws <100 nA, so high-value resistors minimize quiescent current without affecting regulation accuracy.
What is the thermal performance of LM2830XMF in SOT-23?
In the 5-pin SOT-23 package, LM2830XMF has a junction-to-ambient thermal resistance (RθJA) of 165.2°C/W per TI's datasheet. At 1.0 A output with 5 V input and 3.3 V output, typical power dissipation is ~170 mW, resulting in ~28°C junction rise above ambient. Adequate copper pour on GND and VIN pads is essential; derate output current if ambient exceeds 85°C or airflow is restricted.
Can LM2830XMF be used in automotive applications?
No, LM2830XMF is not qualified for automotive use. Only the LM2830X-Q1 and LM2830Z-Q1 variants are AEC-Q100 Grade 1 qualified (–40°C to +125°C junction). The LM2830XMF is rated for –40°C to +125°C operating temperature but lacks automotive-specific stress testing, qualification reports, and PPAP documentation required for vehicle systems.
LM2830XMF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM2830XMF FAQ
1.How can I place an order for LM2830XMF through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2830XMF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM2830XMF reliable?
The price and inventory of LM2830XMF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2830XMF is usually 5 days.
3.What payment methods are accepted for LM2830XMF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2830XMF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2830XMF?
LM2830XMF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2830XMF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM2830XMF?
For technical support, including LM2830XMF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2830XMF requirements.
6.How does Aetrix verify that LM2830XMF is sourced from the original manufacturer or authorized distributors?
All LM2830XMF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2830XMF meets industry standards.
7.What is the process for return or replacement of LM2830XMF?
All LM2830XMF units undergo pre-shipment inspection (PSI). If there is an issue with LM2830XMF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM2830XMF part is unused and in its original packaging.
Return procedure for LM2830XMF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2830XMF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
