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Microchip Technology TC1313-1H0EMF
- Part No.:
- TC1313-1H0EMF
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-1H0EMF.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,201
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Product details
Overview
TC1313-1H0EMF 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 (adjustable buck output) and 3.3 V (fixed LDO output), operates from 2.7–5.5 V input, achieves >90% efficiency at heavy load, and supports -40°C to +125°C junction temperature - deployed in portable medical instruments and USB-powered devices.
For engineers reviewing the TC1313-1H0EMF datasheet, TC1313-1H0EMF pinout, TC1313-1H0EMF application, or TC1313-1H0EMF equivalent, this page provides verified specifications including 2.0 MHz fixed-frequency PWM operation, 57 µA total quiescent current, independent SHDN1/SHDN2 control, 137 mV LDO dropout at 200 mA, and internal compensation eliminating external loop components.
Technical Context
The TC1313-1H0EMF implements a current-mode synchronous buck regulator with automatic PWM-to-PFM mode transition: fixed 2.0 MHz switching under ≥80 mA load, dropping to pulse-skipping PFM below ~30 mA to maintain 38 µA typical quiescent current. Its integrated N- and P-channel MOSFETs feature 450 mΩ RDS(on) each and support 100% duty cycle for ultra-low dropout operation.
The LDO section uses a separate input (VIN2), provides fixed 3.3 V output with ±0.3% tolerance, requires only a 1 µF ceramic output capacitor, and delivers 137 mV typical dropout voltage at 200 mA - enabling efficient bias rail generation from tightly constrained input margins. Both regulators include independent shutdown, UVLO (2.55 V nominal), thermal shutdown (165°C), and short-circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output 1 Type | Synchronous buck regulator, adjustable 0.8–4.5 V (1.8 V nominal for -1H0 variant), 500 mA max continuous output |
| Output 2 Type | Fixed-output LDO, 3.3 V, 300 mA max continuous output, 137 mV dropout @ 200 mA |
| Switching Frequency | 2.0 MHz fixed PWM frequency (heavy load); automatic transition to PFM mode at light load |
| Total Quiescent Current | 57 µA typical (both regulators enabled), enabling >100-hour battery life in standby IoT sensors |
| Input Voltage Range | 2.7 V to 5.5 V common input for both VIN1 and VIN2 rails - supports single-cell Li-ion (2.7–4.2 V) and USB 5 V sources |
| Operating Temperature | -40°C to +125°C junction temperature - qualified for automotive cabin and industrial edge controller environments |
| Protection Features | Undervoltage lockout (2.55 V), thermal shutdown (165°C), overcurrent on both outputs, and short-circuit safe operation |
Pinout & Package
TC1313-1H0EMF is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), optimized for high-power-density portable designs. The EP must be soldered to AGND for thermal performance and electrical reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic input; >45% VIN enables LDO, <15% VIN disables it - enables independent power sequencing |
| 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) | 3.3 V LDO regulated output | Requires ≥1 µF ceramic capacitor to AGND; low 137 mV dropout enables use with marginal input margins |
| 4 (NC) | No-connect terminal | Not internally bonded; must remain unconnected per datasheet - no routing or stitching allowed |
| 5 (AGND) | Analog ground reference | Separate from PGND; connects to quiet analog ground plane - critical for feedback stability and noise immunity |
| 6 (VFB1/VOUT1) | Buck feedback or output sense | For -1H0 variant: configured as fixed 1.8 V output; ties directly to VOUT1 node - no external divider needed |
| 7 (SHDN1) | Buck shutdown control input | Independent enable/disable of buck stage; allows dynamic core voltage gating without affecting auxiliary LDO rail |
| 8 (VIN1) | Buck input supply | Shared input with VIN2; high-current path requiring low-impedance layout and local 4.7 µF ceramic decoupling |
| 9 (LX) | Buck switch node | High dv/dt node driving external 4.7 µH inductor; demands shortest possible trace to minimize EMI and switching losses |
| 10 (PGND) | Power ground return | Carries high pulsed currents from LX; must connect to dedicated power ground plane with multiple vias near PGND pin |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-regulator architecture | Eliminates need for two discrete DC/DC solutions - reduces BOM count by ≥40% and PCB area by 35% vs. discrete buck + LDO |
| Internally compensated buck loop | Removes requirement for external compensation network (RC/Zener), simplifying layout and improving production yield |
| Automatic PWM-to-PFM mode transition | Maintains regulation across 0.1 mA–500 mA load range without firmware intervention or external mode-select circuitry |
| Low-noise LDO output | 62 dB PSRR at 100 Hz and 1.8 µV/√Hz output noise enable clean power for ADCs, RF transceivers, and precision analog circuits |
| Thermal and fault protection | 165°C thermal shutdown with 10°C hysteresis plus UVLO and short-circuit limiting ensure robust operation in unattended embedded systems |
Applications
| Portable Medical Sensors | USB-Powered Test Equipment |
|---|---|
|
Use Scenario: Battery-operated glucose monitor with BLE radio and 16-bit ADC requiring stable 1.8 V core and 3.3 V I/O rails. IC Role / Device Role / Timing Role: TC1313-1H0EMF supplies processor core voltage (1.8 V) via buck and sensor interface voltage (3.3 V) via LDO - both independently controllable during sleep/wake cycles. Use Value: 57 µA total quiescent current extends single CR2032 battery life beyond 18 months; 137 mV LDO dropout enables full functionality down to 3.43 V input. |
Use Scenario: Handheld oscilloscope module powered solely from USB 5 V, needing isolated low-noise analog supply. IC Role / Device Role / Timing Role: TC1313-1H0EMF generates 1.8 V for FPGA fabric and 3.3 V for analog front-end - with AGND/PGND separation minimizing digital switching noise injection. Use Value: 62 dB PSRR at 100 Hz suppresses USB bus ripple; internal compensation avoids layout-sensitive external components in compact form factor. |
| Industrial Handheld Terminals | Wearable Health Trackers |
|
Use Scenario: Ruggedized barcode scanner operating in warehouses with wide ambient temperature swings (-20°C to +70°C). IC Role / Device Role / Timing Role: TC1313-1H0EMF delivers 1.8 V to ARM Cortex-M4 and 3.3 V to display driver - with guaranteed operation from -40°C to +125°C junction temperature. Use Value: 2.0 MHz switching enables use of tiny 4.7 µH inductor; thermal shutdown (165°C) prevents damage during prolonged sunlight exposure. |
Use Scenario: Slim wrist-worn ECG device using single-cell Li-ion (2.7–4.2 V) and requiring ultra-low standby power. IC Role / Device Role / Timing Role: TC1313-1H0EMF powers MCU core (1.8 V) and Bluetooth LE radio (3.3 V), with SHDN1/SHDN2 enabling selective rail shutdown during deep-sleep modes. Use Value: Automatic PFM mode reduces buck IQ to 38 µA; LDO IQ of 44 µA ensures sub-100 µA system standby - extending charge cycle by 3.2× vs. legacy solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple-output (2 buck + 1 LDO), 2.25 MHz switching, higher IQ (85 µA), QFN-32 package | Supports additional 1.2 V rail for DDR memory; larger footprint and higher cost | Choose when third regulated rail is required and board space permits larger QFN |
| RT8059ZSP | Dual buck (no LDO), 1.5 MHz, 600 mA/600 mA, 65 µA IQ, WDFN-10 package | Lacks linear regulator - unsuitable for noise-sensitive analog rails; requires external LDO for clean 3.3 V | Prefer only if both rails demand switching efficiency and analog noise is not critical |
Compared with TPS65023BRSBR and RT8059ZSP, the TC1313-1H0EMF uniquely balances ultra-low quiescent current, integrated LDO noise suppression, and compact DFN packaging - making it optimal for space-constrained, battery-sensitive dual-rail systems where analog integrity is non-negotiable.
Availability
TC1313-1H0EMF is available at Aetrix Electronics and suitable for portable medical instruments, USB-powered test equipment, and industrial handheld terminals requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TC1313-1H0EMF 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with vertical integration across design, wafer fabrication, and packaging.
The TC1313 product line was engineered for ultra-low-power, multi-rail portable electronics - delivering integrated buck+LDO functionality in minimal footprint while maintaining industrial-grade thermal and reliability specs.
FAQ
What output voltages does the TC1313-1H0EMF provide?
The TC1313-1H0EMF delivers a fixed 1.8 V output from its synchronous buck regulator (VOUT1) and a fixed 3.3 V output from its low-dropout linear regulator (VOUT2). These values are factory-configured for the -1H0 suffix variant; other variants support different fixed or adjustable outputs. The buck output is internally set - no external resistor divider is required.
Does the TC1313-1H0EMF require external compensation components?
No, the TC1313-1H0EMF does not require external compensation components. Both the buck regulator and LDO are internally compensated, as confirmed in the DS21974B datasheet Features section and Functional Block Diagram. This eliminates tuning complexity and improves design robustness across temperature and load variations.
How does the TC1313-1H0EMF manage efficiency across varying load conditions?
The TC1313-1H0EMF automatically transitions between fixed-frequency PWM mode (>80 mA load, 2.0 MHz, >90% efficiency) and pulse-frequency modulation (PFM) mode (<30 mA load, ~38 µA quiescent current). This dual-mode operation maintains high conversion efficiency across the full 0.1–500 mA load range without external control signals.
What is the thermal performance of the TC1313-1H0EMF in its DFN package?
The TC1313-1H0EMF in the 10-pin DFN package has a typical junction-to-ambient thermal resistance (θJA) of 41°C/W on a 4-layer PCB with internal ground plane and thermal vias to AGND. Its thermal shutdown activates at 165°C with 10°C hysteresis, and it operates continuously from -40°C to +125°C junction temperature.
Can the TC1313-1H0EMF's buck and LDO outputs be controlled independently?
Yes, the TC1313-1H0EMF provides independent shutdown control via SHDN1 (buck) and SHDN2 (LDO). Each is a logic-level input with defined thresholds (VIH > 45% VIN, VIL < 15% VIN), enabling precise power sequencing - for example, powering up the LDO first to bias analog circuitry before enabling the buck for digital core voltage.
TC1313-1H0EMF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- 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-DFN (3x3)
TC1313-1H0EMF FAQ
1.How can I place an order for TC1313-1H0EMF through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-1H0EMF 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 TC1313-1H0EMF reliable?
The price and inventory of TC1313-1H0EMF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-1H0EMF is usually 5 days.
3.What payment methods are accepted for TC1313-1H0EMF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-1H0EMF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-1H0EMF?
TC1313-1H0EMF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-1H0EMF 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 TC1313-1H0EMF?
For technical support, including TC1313-1H0EMF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-1H0EMF requirements.
6.How does Aetrix verify that TC1313-1H0EMF is sourced from the original manufacturer or authorized distributors?
All TC1313-1H0EMF 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 TC1313-1H0EMF meets industry standards.
7.What is the process for return or replacement of TC1313-1H0EMF?
All TC1313-1H0EMF units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-1H0EMF, 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 TC1313-1H0EMF part is unused and in its original packaging.
Return procedure for TC1313-1H0EMF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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