LM34910CSD/NOPB Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
Texas Instruments LM34910CSD/NOPB is an 8 V to 50 V constant on-time non-synchronous buck regulator capable of 1.25 A output current using hysteretic current-mode control. The device requires minimal external components and operates with fast transient response in a 10-pin small-outline no-lead (SON) package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LM34910CSD/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0450(MOQ 25)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM34910CSD/NOPB?
- Wide 8 V to 50 V input voltage range supporting industrial 24 V, automotive 48 V, and telecom 48 V bus architectures
- Constant on-time hysteretic current-mode control providing inherently stable operation without external loop compensation
- 1.25 A output in compact 10-pin SON package enabling high power density in industrial and automotive DC-DC converters
What is LM34910CSD/NOPB used for?
The LM34910CSD/NOPB is designed for industrial automation systems, factory sensor nodes, and building-control equipment powered from 24 V DC bus rails, where its wide 8 V to 50 V input range accommodates input transients and unregulated supply variations without over-voltage faults. Its constant on-time control also suits automotive pre-regulation stages, motor-drive bias supplies, and point-of-load converters in telecom equipment operating from -40°C environments where fast load-transient response and loop stability without compensation design are critical.
What are the specifications of LM34910CSD/NOPB?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | HYSTERETIC CURRENT MODE |
| Input Voltage-Max | 50V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 24V |
| JESD-30 Code | S-PDSO-N10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 1.25A |
| Output Voltage-Max | 45V |
| Output Voltage-Min | 2.5V |
| Output Voltage-Nom | 7V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC10,.16,32 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 1mA |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.8mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LM34910CSD/NOPB datasheet?
LM34910CSD/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM34910CSD/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LM34910CSD/NOPB support, and how does that span help industrial designs?
The LM34910CSD/NOPB accepts input voltages from 8 V to 50 V, covering nominal 12 V, 24 V, and 48 V industrial bus rails plus their transient overshoot headroom. A 24 V industrial rail with load-dump spikes to 40 V remains safely within the 50 V absolute maximum, eliminating the need for a series diode or external clamping circuit in most factory-floor applications.
Why does constant on-time (COT) control in the LM34910CSD/NOPB eliminate the need for an external compensation network?
Constant on-time hysteretic control sets stability through the inductor ripple current and output capacitor ESR rather than a Type-II or Type-III error-amplifier compensation network. The output capacitor's ESR zero naturally stabilizes the feedback loop, so the LM34910CSD/NOPB requires only a standard inductor and bulk capacitor with ESR above approximately 5 mΩ — no resistor-capacitor compensation components are needed, reducing BOM count by 3 to 5 parts.
For a 24 V to 5 V converter delivering 1.25 A, what is the approximate switching frequency of the LM34910CSD/NOPB?
Switching frequency in constant on-time control varies with input voltage and duty cycle. At 24 V input and 5 V output (duty cycle ≈ 21%), with the on-time resistor set for a nominal 400 kHz at 24 V, the actual frequency is approximately 400 kHz. Output power is 6.25 W (5 V × 1.25 A), and at this frequency a 15 µH to 22 µH inductor keeps ripple below 30% of peak current.
How does the non-synchronous topology of the LM34910CSD/NOPB affect efficiency compared to synchronous buck alternatives?
The non-synchronous topology uses an external Schottky diode as the freewheeling element instead of a low-side MOSFET. At light loads below 200 mA the Schottky diode allows discontinuous conduction, improving efficiency. At full 1.25 A load the Schottky forward voltage (approximately 0.4 V to 0.5 V) causes roughly 2% to 3% higher conduction loss compared to a synchronous design, but the reduced gate-drive circuitry and lower cost justify the choice for output currents under 2 A.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $2.1180 | $52.95 |
| 100+ | $2.0810 | $208.10 |
| 250+ | $2.0450 | $511.25 |
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