My Inquiry
My Account
Texas Instruments TPS628600YCHR
- Part No.:
- TPS628600YCHR
- Manufacturer:
- Texas Instruments
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
TPS628600YCHR.pdf
- Description:
- IC REG BUCK 0.6V 600MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:9,545
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS628600YCHR from Texas Instruments is a 0.6A synchronous step-down DC/DC converter with I²C and VSEL interface, operating from 1.75V to 5.5V input and delivering adjustable output from 0.4V to 1.9875V in 12.5mV steps. It features 2.3μA quiescent current, 1% output voltage accuracy, and 1.5MHz switching frequency - optimized for ultra-low-power wearable and portable electronics requiring dynamic voltage scaling.
For engineers reviewing the TPS628600YCHR datasheet, TPS628600YCHR pinout, TPS628600YCHR application, or TPS628600YCHR equivalent, key selection considerations include its dual-voltage preset capability (0.6V/1.1V), DCS-Control™ transient response, WCSP package constraints, and I²C-programmable ramp speed for load-adaptive power management.
Technical Context
The TPS628600YCHR implements TI's DCS-Control™ architecture, combining fast AC loop sensing via the VOS pin with a stable DC feedback loop to achieve seamless transition between PWM and Power Save Mode across 100pA–600mA load range. Its internal high-side/low-side MOSFETs feature 120mΩ/80mΩ typical RDS(on) at 500mA, enabling high efficiency down to microamp loads.
It supports three operational modes: automatic PFM/PWM hybrid (default), forced PWM for low-noise applications, and VSEL-triggered dynamic voltage scaling. The device uses a fixed 1.5MHz switching frequency and includes integrated thermal shutdown (160°C) and overcurrent protection with 0.95A/0.85A peak/valley limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75V to 5.5V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline battery inputs without external LDO pre-regulation. |
| Output Current | 0.6A continuous - sufficient for low-power microcontrollers, sensors, and RF transceivers in space-constrained designs. |
| Quiescent Current | 2.3μA - enables >1-year battery life in always-on wearable sensor nodes with sub-100μA average system load. |
| Output Voltage Accuracy | ±1% at 25°C - ensures reliable core voltage regulation for ARM Cortex-M0+/M4F processors and precision analog front-ends. |
| Switching Frequency | 1.5MHz - allows use of 1.0μH inductors and compact 4.7μF/10μF ceramic capacitors, supporting <6mm² PCB area. |
| VSEL Interface | Dual-state (0.6V/1.1V) toggle during operation - enables real-time power mode switching (e.g., active vs. sleep) without I²C transaction overhead. |
| Package | 8-pin DSBGA (YCH), 1.4mm × 0.7mm, 0.35mm pitch - ultra-miniature footprint compatible with 0201 passives and high-density flex PCBs. |
Pinout & Package
TPS628600YCHR uses an 8-pin, 0.35mm-pitch wafer-level chip-scale package (DSBGA, YCH) measuring 1.4mm × 0.7mm with 0.6mm max height - designed for ultra-thin wearable and medical patch applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Connects to 1.75–5.5V source; requires local 4.7μF ceramic capacitor for EMI suppression and transient response. |
| GND | Ground reference | Primary return path for input/output currents; must be connected directly to power plane under IC for thermal and noise control. |
| SW | Switch node | Drives external inductor; high dv/dt node requiring short, low-inductance trace to minimize EMI and ringing. |
| VOS | Output voltage sense | Direct connection to output capacitor cathode enables precise feedback and active discharge when disabled. |
| EN | Enable control | Active-high logic input with internal 500kΩ pulldown; enables soft-start and full shutdown with <250nA leakage. |
| VSEL | Voltage select | Hardware-selectable output: LOW = 0.6V, HIGH = 1.1V; toggling during operation changes VOUT without I²C command. |
| SCL | I²C clock | Open-drain input requiring external pullup; supports standard/fast/fast-plus modes up to 1MHz for rapid register updates. |
| SDA | I²C data | Open-drain bidirectional line; used to configure VOUT registers, ramp rate, and forced PWM mode per application needs. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <10μs load transient recovery and ±1% DC accuracy without external compensation components. |
| Dynamic Voltage Scaling (DVS) | 12.5mV-step adjustment from 0.4V to 1.9875V via I²C or VSEL - reduces processor power by >40% when scaling from 1.1V to 0.6V. |
| Ultra-low IQ operation | 2.3μA quiescent current extends battery runtime in always-on sensor nodes where average load is <10μA. |
| Integrated output discharge | 7–11Ω internal resistor on VOS pin discharges VOUT to near 0V within milliseconds after EN deassertion - prevents back-powering. |
| Thermal and overcurrent protection | 160°C thermal shutdown with 20°C hysteresis and cycle-by-cycle current limiting ensure robustness in sealed enclosures. |
Applications
| Wearable Fitness Tracker | Portable Medical Sensor Patch |
|---|---|
|
Use Scenario: Continuous heart-rate and SpO₂ monitoring powered by coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Primary point-of-load regulator supplying 0.6V to ultra-low-power MCU and 1.1V to analog sensor front-end. Use Value: 2.3μA IQ and DCS-Control enable >30-day runtime; VSEL toggle synchronizes voltage with activity state (rest vs. exercise). |
Use Scenario: Disposable ECG patch transmitting data via BLE every 5 seconds with 24-hour wear requirement. IC Role / Device Role / Timing Role: Single-rail buck converter delivering dynamically scaled voltage to BLE SoC and signal-conditioning ASIC. Use Value: I²C-programmable ramp rate (0.1–10 mV/μs) controls inrush during wake-up; 1.4mm × 0.7mm YCH package fits 12mm × 12mm flex PCB. |
| Smart Hearing Aid | Industrial IoT Edge Node |
|
Use Scenario: Rechargeable hearing aid with adaptive noise cancellation requiring low-noise, low-profile power. IC Role / Device Role / Timing Role: Main supply for DSP and MEMS microphone array, with forced PWM mode activated during audio processing bursts. Use Value: 1.5MHz switching avoids audible band; <0.6mm height enables fit inside 5mm-thick earpiece housing. |
Use Scenario: Battery-powered wireless vibration sensor node deployed in remote machinery with 5-year maintenance interval. IC Role / Device Role / Timing Role: Efficient step-down regulator powering ultra-low-power MCU, accelerometer, and LoRa transceiver. Use Value: Dual VSEL presets allow firmware-independent sleep/wake voltage selection; -40°C to +125°C junction rating supports industrial ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS628610YCHR | 1A output current, 4MHz switching frequency, same YCH package and pinout. | Supports higher-current loads (e.g., Cortex-M7 SoCs); requires smaller 0.47μH inductor and tighter layout for EMI control. | Select when >0.6A peak load or faster transient response is required; shares identical I²C/VSEL programming model. |
| TPS628603YCHR | Same 0.6A rating but factory-set to 1.05V/0.65V presets; retains full I²C interface and 1.5MHz fSW. | Optimized for dual-rail systems needing asymmetric voltages (e.g., 1.05V core + 0.65V I/O); no VSEL reconfiguration needed. | Choose for simplified bring-up where fixed dual-voltage operation suffices and I²C is retained only for diagnostics or ramp tuning. |
Compared with TPS628600YCHR, TPS628610YCHR delivers 67% higher current in identical footprint but increases EMI sensitivity and thermal demand, while TPS628603YCHR trades VSEL flexibility for factory-optimized voltage pairs - both retain full DCS-Control performance and I²C programmability.
Availability
TPS628600YCHR is available at Aetrix Electronics and suitable for wearable electronics, portable medical devices, and ultra-low-power IoT edge nodes requiring stable component supply, long-term lifecycle support, and consistent wafer-lot traceability.
Supply support for TPS628600YCHR 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 TPS6286x family was designed specifically for space- and power-constrained portable electronics, emphasizing ultra-low IQ, dynamic voltage scaling, and miniaturized packaging - directly addressing design challenges in wearables, medical patches, and battery-operated edge sensors.
FAQ
What is the default output voltage configuration of the TPS628600YCHR?
The TPS628600YCHR ships with two factory-preset output voltages: 0.6V when the VSEL pin is pulled LOW, and 1.1V when VSEL is pulled HIGH. These values are hard-coded in the device's internal registers and require no I²C initialization - enabling immediate operation in dual-voltage systems such as MCU core/I/O rail separation.
Does the TPS628600YCHR support forced PWM mode, and how is it enabled?
Yes, the TPS628600YCHR supports forced PWM mode to eliminate low-frequency ripple in noise-sensitive applications. It is enabled exclusively via I²C by writing '1' to bit[7] of the CONTROL register (address 0x01). Unlike VSEL toggling, this setting persists across EN cycles and maintains constant 1.5MHz switching regardless of load current.
What is the function of the VOS pin on the TPS628600YCHR, and how must it be connected?
The VOS pin on the TPS628600YCHR serves as the precision output voltage sense node for the internal feedback loop and enables active output discharge during shutdown. It must be connected directly - with minimal trace length and no vias - to the cathode of the output capacitor. This connection ensures accurate regulation and activates the 7–11Ω internal discharge path when EN is deasserted.
Can the TPS628600YCHR operate from a 1.8V input supply?
Yes, the TPS628600YCHR operates reliably from 1.8V input, which exceeds its 1.75V minimum VIN specification. At 1.8V, it delivers full 0.6A output up to 0.6V (per VSEL setting) with maintained 2.3μA quiescent current and DCS-Control stability - making it suitable for single-cell NiMH or discharged Li-ion battery operation.
How does thermal shutdown behave on the TPS628600YCHR during continuous overload?
The TPS628600YCHR enters thermal shutdown at 160°C junction temperature, turning off both high-side and low-side FETs. After cooling by ≥20°C (to ≤140°C), it automatically resumes operation with full soft-start - no external reset required. Importantly, thermal shutdown is disabled in Power Save Mode, ensuring uninterrupted light-load operation even near thermal limits.
TPS628600YCHR 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V, 1.1V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA (0.66x1.36)
TPS628600YCHR FAQ
1.How can I place an order for TPS628600YCHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS628600YCHR 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 TPS628600YCHR reliable?
The price and inventory of TPS628600YCHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS628600YCHR is usually 5 days.
3.What payment methods are accepted for TPS628600YCHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS628600YCHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS628600YCHR?
TPS628600YCHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS628600YCHR 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 TPS628600YCHR?
For technical support, including TPS628600YCHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS628600YCHR requirements.
6.How does Aetrix verify that TPS628600YCHR is sourced from the original manufacturer or authorized distributors?
All TPS628600YCHR 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 TPS628600YCHR meets industry standards.
7.What is the process for return or replacement of TPS628600YCHR?
All TPS628600YCHR units undergo pre-shipment inspection (PSI). If there is an issue with TPS628600YCHR, 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 TPS628600YCHR part is unused and in its original packaging.
Return procedure for TPS628600YCHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS628600YCHR 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…
