My Inquiry
My Account
Texas Instruments TLV627432YFPT
- Part No.:
- TLV627432YFPT
- Manufacturer:
- Texas Instruments
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
TLV627432YFPT.pdf
- Description:
- IC REG BUCK ADJ 400MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,382
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV627432YFPT from Texas Instruments is a high-efficiency synchronous buck converter optimized for ultra-low-power wearable and energy-harvesting systems. It delivers up to 400 mA output current across an input range of 2.15 V–5.5 V, features 360 nA typical quiescent current, supports eight programmable output voltages (1.2 V–3.3 V) via VSEL pins, and operates with DCS-Control™ topology at ~1.2 MHz switching frequency.
For engineers reviewing the TLV627432YFPT datasheet, TLV627432YFPT pinout, TLV627432YFPT application, or TLV627432YFPT equivalent, key selection criteria include light-load efficiency down to 10 µA, automatic 100% duty-cycle mode for near-input-output voltage operation, RF-friendly low-noise regulation, output voltage discharge capability, and compact 1.57 mm × 0.88 mm WCSP package integration.
Technical Context
The TLV627432YFPT implements TI's DCS-Control™ architecture-combining fast AC transient response via direct VOS sensing with stable DC regulation through an internally compensated error amplifier. It seamlessly transitions between PWM (1.2 MHz nominal) and PFM Power Save Mode without output ripple discontinuity.
Functional modes include enable-controlled startup with 10 ms delay and 700 µs softstart, undervoltage lockout (2.15 V turn-on, 2.0 V shutdown), cycle-by-cycle overcurrent protection on both high- and low-side MOSFETs, and automatic No Ripple 100% Mode activation when VIN − VOUT falls below 200 mV (typical enter threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.15 V to 5.5 V - supports single-cell Li-ion, Li-polymer, and alkaline/coin-cell sources without external LDO pre-regulation. |
| Quiescent Current | 360 nA (typ) - enables multi-year battery life in always-on wearables and energy-harvesting nodes. |
| Output Current | 400 mA - sufficient for dual-core microcontrollers, BLE radios, and optical sensors in compact form factors. |
| Switching Frequency | ~1.2 MHz - allows use of tiny 2.2 µH inductors and 10 µF ceramic output capacitors, minimizing solution size to <10 mm². |
| Output Voltage Options | Eight fixed values (1.2 V–3.3 V) - selected by three logic-level VSEL pins; no external resistors required. |
| Efficiency at 10 µA | Up to 90% - maintains high conversion efficiency even during deep-sleep MCU states. |
| Package | 8-ball DSBGA (YFP), 1.57 mm × 0.88 mm - ultra-compact footprint compatible with space-constrained wearable PCB layouts. |
Pinout & Package
TLV627432YFPT uses an 8-ball DSBGA (WCSP) package with 0.4-mm pitch and nominal body size 1.57 mm × 0.88 mm. The package is moisture-sensitive level 1 (MSL-1) and requires no special handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply connection; requires local 4.7 µF ceramic capacitor for noise suppression and voltage spike mitigation. |
| SW | Switch Node | Connection to internal high- and low-side MOSFETs; ties directly to inductor; critical for EMI control and thermal path. |
| GND | Power Ground | Low-impedance return path for input/output capacitors and power stage; must be connected with short, wide traces. |
| VOS | Feedback & Discharge | Regulation sense point and active output discharge path; connects directly to output capacitor for accuracy and fast ramp-down. |
| VSEL1–VSEL3 | Output Voltage Select | Three digital inputs setting one of eight output voltages (1.2 V–3.3 V); support dynamic reconfiguration during operation. |
| EN | Enable Control | Active-high logic input; pulls device into shutdown (70 nA ISD) when low; must be externally terminated. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ Topology | Enables simultaneous fast load transient response (<10 µs recovery), low output ripple (<10 mVpp), and seamless PWM-to-PFM transition without audible noise or voltage glitches. |
| No Ripple 100% Mode | Disables switching and turns on high-side MOSFET when VIN ≈ VOUT, eliminating switching ripple and enabling clean brownout operation down to ~100 mV headroom. |
| Output Voltage Discharge | Internally discharges VOUT via VOS pin upon disable or UVLO, ensuring controlled start-up sequencing and preventing back-powering of upstream circuitry. |
| RF-Friendly Operation | Controlled edge rates and DCS-Control™ architecture minimize conducted and radiated emissions-validated for co-location with BLE/Bluetooth Low Energy and Zigbee radios. |
| Total Solution Size | <10 mm² - achieved with 2.2 µH inductor and 10 µF output capacitor, enabling integration into wristband-sized PCBs. |
Applications
| Fitness Tracker Power Management | Smartwatch Core Rail |
|---|---|
Use Scenario: Powers motion sensor hub and Bluetooth LE radio in a coin-cell–powered wrist-worn fitness tracker operating in intermittent active/sleep cycles. IC Role / Device Role: Primary step-down regulator delivering 1.8 V at ≤300 mA peak, dynamically scaled to 1.2 V during sleep to reduce system leakage. Use Value: 360 nA IQ extends battery life beyond 12 months while maintaining sub-10 mV output ripple during RF transmission bursts. | Use Scenario: Supplies real-time clock, display driver, and ARM Cortex-M4 core in a rechargeable smartwatch with tight thermal and area constraints. IC Role / Device Role: High-efficiency buck converter generating 3.3 V from 4.2 V Li-ion cell, entering 100% mode as battery discharges to 3.4 V. Use Value: Eliminates switching noise interference with touch controller and OLED display timing, verified per EN 55022 Class B emissions limits. |
| Energy-Harvesting Sensor Node | Health Monitoring Patch |
Use Scenario: Regulates output from thermoelectric or piezoelectric harvester (2.5–5.0 V, µW–mW range) to power ultra-low-power MCU and analog front-end. IC Role / Device Role: Buck converter operating in Power Save Mode at 10–100 µA loads, with automatic VOUT discharge to prevent reverse current flow during harvest interruption. Use Value: 90% efficiency at 10 µA enables usable runtime from intermittent ambient energy sources without supercapacitor buffering. | Use Scenario: Provides stable 2.5 V rail for ECG/PPG analog signal chain and BLE SoC in a disposable, skin-adhesive health patch. IC Role / Device Role: Single-chip power solution replacing discrete LDO + buck combo; integrates VSEL-based voltage scaling for analog/digital domain optimization. Use Value: Compact 1.57 mm × 0.88 mm YFP package fits within 8 mm × 8 mm total PCB area; low EMI avoids corruption of microvolt-level biopotential signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LDR | Lower IQ (250 nA typ), but max IOUT = 150 mA and no VSEL programming; fixed 3.3 V output only. | Suitable only for ultra-low-current peripherals (e.g., RTC, EEPROM), not for MCU/radio rails requiring >200 mA. | Select if system load never exceeds 150 mA and fixed 3.3 V suffices; otherwise TLV627432YFPT provides broader voltage flexibility and higher current. |
| TPS62840YKAR | Similar IQ (300 nA), 1.8 V–5.5 V input, but supports only two VSEL options (1.8 V/3.3 V); 600 mA IOUT rating. | Better for higher-current designs needing only dual-voltage scaling; lacks eight-option granularity and 1.2 V support. | Choose for applications requiring >400 mA or where only two output voltages are needed; TLV627432YFPT preferred when fine-grained voltage selection (e.g., 2.1 V, 2.8 V) is critical. |
Compared with TPL7407LDR and TPS62840YKAR, TLV627432YFPT uniquely balances eight-programmable outputs, 400 mA capability, and sub-400 nA quiescent current-making it optimal for multi-rail, space-constrained wearables where voltage flexibility and long battery life are jointly essential.
Availability
TLV627432YFPT is available at Aetrix Electronics and suitable for wearable electronics, medical patches, and energy-harvesting sensor nodes requiring stable component supply across extended production lifecycles.
Supply support for TLV627432YFPT 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 TLV627432YFPT belongs to TI's ultra-low-power buck converter product line, designed specifically for battery-operated IoT endpoints, wearables, and energy-harvesting systems demanding nanowatt-level quiescent operation without sacrificing output current or voltage flexibility.
FAQ
What is the minimum input voltage required for TLV627432YFPT to regulate output?
The TLV627432YFPT has an undervoltage lockout (UVLO) turn-on threshold of 2.15 V (typical). Below this, the device remains disabled. Regulation begins once VIN rises above 2.15 V, and stable operation is maintained down to 2.15 V across temperature and load-verified per Section 7.3 Recommended Operating Conditions in the datasheet. The TLV627432YFPT can sustain regulation even as VIN drops to VOUT + 200 mV (typ) before entering 100% mode.
How does TLV627432YFPT achieve 90% efficiency at 10 µA output current?
The TLV627432YFPT achieves 90% efficiency at 10 µA by combining ultra-low-quiescent-current circuitry (360 nA typ), DCS-Control™ topology that minimizes switching losses at light loads, and optimized gate drive for its integrated MOSFETs. In Power Save Mode, it pulses only as needed and shuts down most internal blocks between pulses-reducing static loss. This behavior is confirmed in Figure 9-2 through Figure 9-4 of the TLV627432YFPT datasheet.
Can TLV627432YFPT output voltage be changed dynamically during operation?
Yes, the TLV627432YFPT supports dynamic output voltage scaling: VSEL1–VSEL3 pins may be reconfigured while the device is enabled and regulating. Table 6-2 confirms all eight voltage options are valid under active operation, and Section 8.3.3 explicitly states "The output voltage can be changed during operation." This enables adaptive power management-for example, lowering VOUT from 1.8 V to 1.2 V when the MCU enters deep sleep-without requiring a restart or external intervention.
What is the purpose of the VOS pin on TLV627432YFPT, and how should it be connected?
The VOS pin on TLV627432YFPT serves dual functions: it is the feedback node for the internal resistor divider network and the discharge path for the output capacitor when EN is low or UVLO triggers. Per Table 6-1 and Section 8.3.4, VOS must be connected directly to the output capacitor with the shortest possible trace-no resistors or capacitors in series-to ensure accurate regulation and rapid, controlled VOUT ramp-down. This prevents back-powering and supports precise power sequencing in multi-rail systems.
Does TLV627432YFPT require external compensation components?
No, the TLV627432YFPT does not require external compensation components. Its DCS-Control™ architecture incorporates an internally compensated regulation loop optimized for use with small ceramic capacitors (e.g., 10 µF X7R) and a 2.2 µH inductor. Section 8.3.1 and the Typical Application Circuit (Figure 9-1) confirm full stability is achieved with only CIN, COUT, and L-no additional RC networks, feedforward capacitors, or compensation resistors are needed, simplifying layout and reducing BOM count.
TLV627432YFPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.15V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 400mA
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA
TLV627432YFPT FAQ
1.How can I place an order for TLV627432YFPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV627432YFPT 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 TLV627432YFPT reliable?
The price and inventory of TLV627432YFPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV627432YFPT is usually 5 days.
3.What payment methods are accepted for TLV627432YFPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV627432YFPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV627432YFPT?
TLV627432YFPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV627432YFPT 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 TLV627432YFPT?
For technical support, including TLV627432YFPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV627432YFPT requirements.
6.How does Aetrix verify that TLV627432YFPT is sourced from the original manufacturer or authorized distributors?
All TLV627432YFPT 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 TLV627432YFPT meets industry standards.
7.What is the process for return or replacement of TLV627432YFPT?
All TLV627432YFPT units undergo pre-shipment inspection (PSI). If there is an issue with TLV627432YFPT, 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 TLV627432YFPT part is unused and in its original packaging.
Return procedure for TLV627432YFPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV627432YFPT 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…
