My Inquiry
My Account
Microchip Technology TC1313-1H0EUN
- Part No.:
- TC1313-1H0EUN
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1313-1H0EUN.pdf
- Description:
- IC REG DL BUCK/LNR SYNC 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TC1313-1H0EUN from Microchip Technology is a dual-output power management IC integrating a 500 mA synchronous buck regulator and a 300 mA low-dropout linear regulator (LDO) in a single 10-pin DFN package. It delivers 1.8 V (buck, adjustable) and 3.3 V (LDO, fixed) outputs with 57 µA total quiescent current, 2.0 MHz fixed-frequency PWM operation under heavy load, and automatic PWM-to-PFM transition for battery efficiency - deployed in portable medical instruments and USB-powered devices.
For engineers reviewing the TC1313-1H0EUN datasheet, TC1313-1H0EUN pinout, TC1313-1H0EUN application, or TC1313-1H0EUN equivalent, key selection criteria include independent shutdown control per rail, 137 mV LDO dropout at 200 mA, internal compensation eliminating external loop components, -40°C to +125°C junction temperature rating, and UVLO/overtemperature/short-circuit protection across both outputs.
Technical Context
The TC1313-1H0EUN implements a current-mode synchronous buck regulator with integrated P-channel and N-channel MOSFETs (RDS(on) = 450 mΩ each), operating at 2.0 MHz (±20%) under heavy load and transitioning autonomously to PFM mode below ~30 mA to maintain ultra-low IQ. Its LDO uses a PMOS pass element with 137 mV typical dropout at 200 mA and supports ceramic output capacitors as small as 1 µF.
Both regulators feature independent logic-level shutdown inputs (SHDN1/SHDN2), internally compensated control loops, and share common ground references (AGND for analog sensing, PGND for high-current return). The device enforces undervoltage lockout (2.55 V nominal, 200 mV hysteresis) and thermal shutdown at 165°C with 10°C hysteresis, ensuring robust operation in thermally constrained portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Output Current | 500 mA maximum - supports processor core rails requiring high current at low voltage (e.g., 1.8 V). |
| LDO Output Current | 300 mA maximum - powers auxiliary circuits like I/O interfaces or sensors with minimal external components. |
| Total Quiescent Current | 57 µA typical - enables multi-day battery life in standby mode for handheld medical instruments. |
| Buck Switching Frequency | 2.0 MHz fixed (1.6–2.4 MHz range) - allows use of compact 4.7 µH inductors and reduces EMI filtering burden. |
| LDO Dropout Voltage | 137 mV typical @ 200 mA - permits operation with minimal input–output differential, e.g., 3.437 V input for 3.3 V output. |
| Operating Junction Temp | -40°C to +125°C - qualified for industrial and automotive-adjacent portable equipment environments. |
| UVLO Threshold | 2.55 V ±150 mV - prevents erratic startup during brown-out conditions in USB-powered systems. |
Pinout & Package
TC1313-1H0EUN is housed in a 3×3 mm, 10-lead DFN package with exposed thermal pad (EP), optimized for space-constrained portable designs. The EP must be soldered to AGND for thermal and electrical performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic input (>45% VIN); enables/disables 300 mA LDO output independently of buck stage. |
| 2 (VIN2) | LDO input supply | Accepts 2.7–5.5 V; must be routed with minimal trace length to VIN1 to reduce noise coupling into analog ground. |
| 3 (VOUT2) | LDO regulated output | Fixed 3.3 V output; requires ≥1 µF ceramic capacitor to AGND for stability and transient response. |
| 4 (NC) | No-connect terminal | Not bonded internally; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 5 (AGND) | Analog reference ground | Reference node for feedback sensing (VFB/VOUT1); must be isolated from PGND except at single-point star connection. |
| 6 (VFB/VOUT1) | Buck feedback or output | Configured as VFB for adjustable 0.8–4.5 V outputs or direct VOUT1 connection for fixed options (e.g., 1.8 V). |
| 7 (SHDN1) | Buck shutdown control input | Active-high logic input (>45% VIN); controls 500 mA buck stage independently - enables dynamic rail sequencing. |
| 8 (VIN1) | Buck input supply | Primary input for synchronous buck stage; shares same source as VIN2 but requires separate decoupling near pin. |
| 9 (LX) | Buck switch node | High-slew-rate switching node connecting to inductor; demands shortest possible trace and no vias to minimize EMI. |
| 10 (PGND) | Power ground return | High-current return path for buck inductor and internal MOSFETs; must route separately from AGND until single-point tie. |
Key Features
| Feature | Design Value |
|---|---|
| Independent shutdown per regulator | Enables precise power sequencing - e.g., keep LDO active for real-time clock while shutting down buck during sleep. |
| Internal compensation (both rails) | Eliminates need for external compensation networks, reducing BOM count and layout sensitivity in cost-sensitive designs. |
| Automatic PWM-to-PFM mode transition | Maintains regulation down to microamp loads without manual mode control or external circuitry - critical for battery longevity. |
| Low-noise buck operation (<8 mVPP) | Minimizes conducted EMI into sensitive analog sections (e.g., ADC references or sensor front-ends) without added LC filters. |
| Thermal and short-circuit protection | Self-protecting behavior prevents field failures in unattended portable devices - no external fault-handling logic required. |
Applications
| Portable Medical Instrumentation | USB-Powered Peripheral |
|---|---|
|
Use Scenario: Handheld glucose meter with LCD display, Bluetooth LE radio, and precision analog front-end. IC Role / Device Role / Timing Role: TC1313-1H0EUN supplies 1.8 V to MCU core and 3.3 V to BLE transceiver and display driver from single 3.7 V Li-ion cell. Use Value: Dual-rail integration eliminates discrete DC/DC + LDO solution, saving 32 mm² PCB area and reducing bill-of-materials by 7 components. |
Use Scenario: USB bus-powered barcode scanner with CMOS image sensor and motorized trigger mechanism. IC Role / Device Role / Timing Role: TC1313-1H0EUN delivers regulated 1.8 V to image sensor logic and 3.3 V to motor driver and USB PHY from 5 V USB source. Use Value: 2.0 MHz switching frequency avoids interference with USB 2.0 high-speed data bands (480 MHz), simplifying EMI compliance testing. |
| Industrial Handheld Terminal | Wearable Health Monitor |
|
Use Scenario: Ruggedized PDA used in warehouse logistics with RFID reader, barcode engine, and touch interface. IC Role / Device Role / Timing Role: TC1313-1H0EUN provides 1.8 V for ARM Cortex-M7 application processor and 3.3 V for RFID transceiver IC from 3.6 V primary battery. Use Value: -40°C to +125°C junction rating ensures reliable startup and operation in cold storage or hot vehicle-mounted environments. |
Use Scenario: Chest-worn ECG monitor powered by coin-cell battery with Bluetooth streaming and motion sensing. IC Role / Device Role / Timing Role: TC1313-1H0EUN generates 1.8 V for ultra-low-power MCU and 3.3 V for analog signal chain from 3.0 V CR2032 source. Use Value: 57 µA total quiescent current extends battery life beyond 12 months in always-on monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBT | Triple-output (2 buck + 1 LDO), higher IQ (85 µA), 3.5 mm × 3.5 mm QFN, no PFM mode | Supports three-rail systems (e.g., DDR memory termination); less suitable for strict size-constrained dual-rail designs | Select when needing third rail or higher current (1 A buck); avoid if minimizing footprint or maximizing light-load efficiency is critical |
| RT8059ZSP | Dual buck only (no integrated LDO), 2.5 MHz switching, smaller 2 mm × 2 mm DFN, no independent shutdown | Requires external LDO for auxiliary rail; better for high-density layouts where LDO can be shared across multiple ICs | Select when system already includes a dedicated LDO or when board space is <9 mm²; not drop-in due to missing LDO function |
Compared with TPS65023BRSBT and RT8059ZSP, TC1313-1H0EUN uniquely balances dual-rail integration, ultra-low quiescent current, and independent shutdown in a 3×3 mm DFN - making it optimal for space- and battery-limited portable instrumentation where auxiliary rail simplicity matters more than triple-output flexibility or sub-2 mm footprint.
Availability
TC1313-1H0EUN is available at Aetrix Electronics and suitable for portable medical instrumentation, USB-powered peripherals, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TC1313-1H0EUN 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
Microchip Technology is a leading provider of microcontrollers, analog devices, and power management ICs, serving industrial, automotive, and consumer markets with high-reliability semiconductor solutions.
The TC1313 product line was designed specifically for space-constrained, battery-operated portable electronics requiring tightly regulated dual voltage rails with minimal external components and ultra-low standby power consumption.
FAQ
What output voltages does the TC1313-1H0EUN provide?
The TC1313-1H0EUN delivers two independent outputs: a programmable buck regulator (VOUT1) set to 1.8 V via external resistor divider, and a fixed 3.3 V LDO output (VOUT2). The buck output supports adjustable ranges from 0.8 V to 4.5 V, while the LDO offers factory-trimmed fixed options including 1.5 V, 1.8 V, 2.5 V, and 3.3 V - with TC1313-1H0EUN specifically configured for 3.3 V on VOUT2.
How does the TC1313-1H0EUN manage power efficiency across load conditions?
The TC1313-1H0EUN automatically transitions between fixed-frequency PWM mode (2.0 MHz) under heavy load for >90% efficiency and pulse-frequency modulation (PFM) mode under light load to reduce quiescent current to 38 µA (buck) and 44 µA (LDO). This dual-mode architecture ensures optimal efficiency from full 500 mA/300 mA load down to microamp standby, extending battery life in portable applications without firmware intervention.
Can the TC1313-1H0EUN operate from a single 3.7 V lithium-ion cell?
Yes - the TC1313-1H0EUN supports input voltages from 2.7 V to 5.5 V, fully covering the discharge curve of a standard 3.7 V Li-ion cell (3.0–4.2 V). Its 137 mV LDO dropout at 200 mA ensures stable 3.3 V output even at end-of-discharge (3.0 V input), while the buck regulator maintains 1.8 V output down to 2.7 V input using 100% duty-cycle capability.
What protection features are built into the TC1313-1H0EUN?
The TC1313-1H0EUN integrates undervoltage lockout (UVLO), overtemperature shutdown (165°C trip, 10°C hysteresis), output short-circuit protection, and overcurrent limiting on both buck and LDO outputs. These protections operate autonomously without external components, safeguarding downstream circuitry in portable systems subject to thermal stress, accidental shorts, or input brownouts.
Is the TC1313-1H0EUN pin-compatible with other variants in the TC1313 family?
Yes - all TC1313 variants (e.g., TC1313-1G0EUN, TC1313-2H0EUN) share identical 10-pin DFN packaging and pinout. Differences reside solely in factory-configured output voltages and internal feedback resistor ratios; no PCB layout change is required when substituting between variants offering different VOUT1/VOUT2 combinations.
TC1313-1H0EUN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 1.375V, 500mA
- Voltage/Current - Output 2:
- 2.6V, 300mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
TC1313-1H0EUN FAQ
1.How can I place an order for TC1313-1H0EUN through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-1H0EUN 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 TC1313-1H0EUN reliable?
The price and inventory of TC1313-1H0EUN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-1H0EUN is usually 5 days.
3.What payment methods are accepted for TC1313-1H0EUN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-1H0EUN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-1H0EUN?
TC1313-1H0EUN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-1H0EUN 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 TC1313-1H0EUN?
For technical support, including TC1313-1H0EUN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-1H0EUN requirements.
6.How does Aetrix verify that TC1313-1H0EUN is sourced from the original manufacturer or authorized distributors?
All TC1313-1H0EUN 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 TC1313-1H0EUN meets industry standards.
7.What is the process for return or replacement of TC1313-1H0EUN?
All TC1313-1H0EUN units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-1H0EUN, 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 TC1313-1H0EUN part is unused and in its original packaging.
Return procedure for TC1313-1H0EUN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TC1313-1H0EUN Tags
-
TPS6521905RHBR
Texas Instruments
-
MIC3385YHL-TR
Microchip Technology
-
A4402ELPTR-T
Allegro MicroSystems
-
LM26480SQ-AA/NOPB
Texas Instruments
-
A4402KLPTR-T
Allegro MicroSystems
-
BD71847AMWV-E2
ROHM Semiconductor
-
ADP5040ACPZ-1-R7
Analog Devices Inc.
-
LT3048IDC#TRPBF
Analog Devices Inc.
-
ADP5037ACPZ-R7
Analog Devices Inc.
-
XRP7714ILB-F
MaxLinear, Inc.
-
LTC3260EDE#TRPBF
Analog Devices Inc.
-
LTC3260EMSE#PBF
Analog Devices Inc.
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
