LM3248TME/NOPB Texas Instruments Integrated Circuit (BGA) In Stock
Texas Instruments LM3248TME/NOPB is a 2.5A adjustable step-down/step-up DC-DC converter with current-mode PWM control. It operates from 2.7 V to 5.5 V input and delivers an adjustable output from 0.4 V to 4 V for battery-powered applications. Housed in a 30-pin DSBGA package for ultra-compact portable designs.
- Manufacturer
- Texas Instruments
- Package
- BGA
- Pin Count
- 30
- Lifecycle
- ACTIVE
- Datasheet
- LM3248TME/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1800(MOQ 500)
- Temp Range
- -30.0°C to 90.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Step-down and step-up capability from a single 2.7 V to 5.5 V input supports single-cell Li-Ion battery operation across full discharge cycle
- 2.5 A output current with current-mode PWM control ensures stable regulation and fast transient response
- Adjustable output from 0.4 V to 4 V covers processor core, memory, and RF transceiver supply rails in a single IC
- 30-pin DSBGA package enables the most compact power supply footprint for wearable and handheld mobile devices
Applications
The LM3248TME/NOPB is designed for battery-powered portable electronics such as smartphones, tablets, and wearables where the input voltage from a single Li-Ion cell spans 2.7 V to 4.2 V and the regulated output must remain stable as the battery discharges. Its step-up/step-down topology ensures the 0.4 V to 4 V adjustable output stays in regulation even when VIN crosses VOUT, eliminating dropout issues common with LDO-only designs. The ultra-small DSBGA footprint is critical for space-constrained designs targeting sub-1 cm² power supply implementations.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | BATTERY CHARGE CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | R-XBGA-B30 |
| JESD-609 Code | e1 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 2.5A |
| Output Voltage-Max | 4V |
| Output Voltage-Min | 0.4V |
| Package Body Material | UNSPECIFIED |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2700kHz |
| Temperature Grade | OTHER |
| Terminal Finish | Tin/Silver/Copper (Sn/Ag/Cu) |
| Terminal Form | BALL |
| Terminal Pitch | 0.4mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | BGA |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3248TME/NOPB:
suggested
suggested
Frequently Asked Questions
How does LM3248TME/NOPB maintain output regulation when a Li-Ion battery discharges from 4.2 V to 2.7 V?
The LM3248TME/NOPB uses a buck-boost (step-down/step-up) topology, so it regulates the output whether VIN is above, equal to, or below VOUT. For example, when set to 3.3 V output and powered by a Li-Ion cell, the device steps down from 4.2 V at full charge and seamlessly transitions to step-up mode as the battery drops below 3.3 V, continuing to regulate all the way down to the 2.7 V minimum input. This prevents system brown-out that would occur with a pure buck converter at the end of battery life.
What output current can LM3248TME/NOPB supply, and is it sufficient for powering an application processor?
LM3248TME/NOPB delivers up to 2.5 A output current, which is adequate for powering low-power application processors such as Cortex-M series MCUs with peak currents under 200 mA, as well as driving RF transceivers, DDR memory, and display backlights simultaneously. For a typical IoT device with a combined peak load of 500 mA to 1.5 A, the 2.5 A rating provides 40% to 67% headroom for transient current spikes without triggering current-limit shutdowns.
What makes the 30-pin DSBGA package of LM3248TME/NOPB suitable for wearable electronics?
The DSBGA (Die Size Ball Grid Array) package has a very small body, typically under 2.5 mm x 2.5 mm, with a 0.4 mm ball pitch — making it one of the smallest available packages for a 2.5 A DC-DC converter. Wearable devices such as smartwatches or fitness bands have PCB areas often below 2 cm², requiring power components with minimal footprint. The DSBGA format also allows tighter inductor placement to minimize switching loop area and reduce radiated EMI in devices worn near the body.
Can LM3248TME/NOPB replace a separate LDO post-regulator in a two-stage power architecture?
In many designs, an LM3248TME/NOPB operating in buck-boost mode produces a tightly regulated output with typical output ripple below 20 mV, which is sufficient to eliminate a downstream LDO in noise-tolerant loads such as digital processors and memories. For noise-sensitive analog loads such as RF PLLs requiring ripple below 1 mV, a small LDO post-regulator may still be needed, but the LM3248TME/NOPB handles the primary 2.5 A regulation, reducing the LDO thermal burden and enabling a much smaller LDO package in the final design.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $1.3200 | $660.00 |
| 1000+ | $1.2500 | $1250.00 |
| 10000+ | $1.1800 | $11800.00 |
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