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Microchip Technology TC1313-DG0EMF
- Part No.:
- TC1313-DG0EMF
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-DG0EMF.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
TC1313-DG0EMF 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 two independent, tightly regulated voltage rails - one adjustable (0.8V–4.5V) or fixed (0.8V/1.2V/1.5V/1.8V/2.5V/3.3V), the other fixed (1.5V/1.8V/2.5V/3.3V) - with total quiescent current of 57 µA typical, 2.0 MHz PWM switching, and 137 mV dropout at 200 mA for the LDO. It is engineered for battery-powered portable electronics requiring high efficiency and minimal board area.
For engineers reviewing the TC1313-DG0EMF datasheet, TC1313-DG0EMF pinout, TC1313-DG0EMF application, or TC1313-DG0EMF equivalent, key selection criteria include independent shutdown control per rail, automatic PWM-to-PFM mode transition under light load, internal compensation eliminating external loop components, thermal/UVLO/short-circuit protection, and compatibility with ceramic output capacitors as small as 1 µF for the LDO output.
Technical Context
The TC1313-DG0EMF implements a current-mode synchronous buck regulator with integrated P- and N-channel MOSFETs (RDS(on) = 450 mΩ each), operating at 2.0 MHz (±0.4 MHz) under heavy load and transitioning automatically to PFM mode below ~30 mA load to maintain ultra-low IQ. Its LDO stage uses a PMOS pass device with 137 mV typical dropout at 200 mA and supports fixed-output voltages only.
Both regulators share common input (VIN1/VIN2 tied), feature independent logic-level shutdown inputs (SHDN1/SHDN2), and incorporate undervoltage lockout (2.55 V nominal, 200 mV hysteresis), overtemperature shutdown (165°C), and short-circuit protection. The device operates across –40°C to +125°C junction temperature and requires no external compensation network for either output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output 1 Type | Synchronous buck regulator: 500 mA max output, adjustable (0.8–4.5 V) or fixed (0.8/1.2/1.5/1.8/2.5/3.3 V), internally compensated |
| Output 2 Type | Low-dropout linear regulator: 300 mA max output, fixed only (1.5/1.8/2.5/3.3 V), stable with 1 µF ceramic capacitor |
| Quiescent Current | 57 µA typical total (38 µA buck + 44 µA LDO when active separately), enabling long battery life in standby |
| Switching Frequency | 2.0 MHz fixed PWM frequency under heavy load; automatic transition to PFM mode at light load to reduce IQ |
| LDO Dropout Voltage | 137 mV typical at 200 mA load, allowing efficient operation with minimal input–output differential |
| Protection Features | Undervoltage lockout (2.55 V ±150 mV), thermal shutdown (165°C), output short-circuit protection on both rails |
| Operating Temperature | –40°C to +125°C junction temperature range, qualified for industrial and extended-temperature applications |
Pinout & Package
TC1313-DG0EMF is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), optimized for compact, thermally efficient PCB layouts. The EP must be connected to AGND via multiple vias 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/disables LDO output independently without affecting buck stage |
| 2 VIN2 | LDO input supply | Input voltage source for LDO; must be tied directly to VIN1 with minimal trace length to reduce noise coupling |
| 3 VOUT2 | LDO regulated output | Delivers fixed 1.5/1.8/2.5/3.3 V; requires ≥1 µF ceramic capacitor to AGND for stability and transient response |
| 4 NC | No-connect terminal | Not bonded; must remain unconnected on PCB to avoid parasitic coupling or reliability risk |
| 5 AGND | Analog ground reference | Reference node for feedback and analog circuitry; must be isolated from PGND except at single-point connection |
| 6 VFB/VOUT1 | Buck feedback or output sense | For adjustable versions: connects to resistor divider midpoint; for fixed versions: direct output connection point |
| 7 SHDN1 | Buck shutdown control input | Active-high logic input (>45% VIN); enables/disables buck regulator independently of LDO |
| 8 VIN1 | Buck input supply | Main input for buck stage; shares same source as VIN2; requires local 4.7 µF ceramic input capacitor |
| 9 LX | Switch node | High-current switching node connecting to buck inductor; demands shortest possible trace and tight layout to minimize EMI |
| 10 PGND | Power ground return | Return path for high-frequency buck switching current; must be routed separately from AGND and joined at single point |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail integration | Combines 500 mA buck + 300 mA LDO in one die/package, reducing BOM count, footprint, and design complexity vs. discrete solutions |
| Ultra-low quiescent current | 57 µA typical total IQ enables >1-year battery life in always-on portable devices with multi-rail power requirements |
| Auto PWM-to-PFM transition | Seamless, no-intervention mode switching maintains regulation while minimizing IQ below ~30 mA load - critical for sleep-state efficiency |
| Single-capacitor LDO stability | Stable with only 1 µF ceramic output capacitor, eliminating need for bulk electrolytic or tantalum, saving space and cost |
| Robust protection suite | Integrated UVLO, thermal shutdown (165°C), and short-circuit protection eliminate need for external fault-handling circuitry |
| Fixed-frequency 2.0 MHz operation | Enables use of small 4.7 µH inductors and 4.7 µF ceramic input/output caps, supporting ultra-compact DC/DC designs |
Applications
| Portable Medical Instrumentation | USB-Powered Peripherals |
|---|---|
Use Scenario: Handheld glucose meters and pulse oximeters powered by single-cell Li-ion (3.0–4.2 V) requiring clean, low-noise 1.8 V for MCU and 3.3 V for sensor interface. IC Role / Device Role / Timing Role: Dual-output PMIC providing core logic rail (buck) and analog/sensor rail (LDO) with independent enable control and low output noise. Use Value: 137 mV LDO dropout preserves battery runtime; 2.0 MHz switching avoids audible noise; 1 µF LDO capacitor minimizes size in constrained enclosures. |
Use Scenario: USB bus-powered hubs, dongles, or audio adapters drawing from 5 V USB port, needing 1.2 V for USB PHY and 3.3 V for I/O logic. IC Role / Device Role / Timing Role: Primary power converter generating two precision rails from unregulated 4.5–5.5 V input, with fast startup and load transient response. Use Value: Internal compensation eliminates external compensation parts; 57 µA IQ reduces no-load power draw; UVLO prevents brownout during USB plug-in. |
| Smartphone Baseband Subsystem | Industrial Handheld Terminals |
Use Scenario: Low-power cellular modem modules in IoT trackers requiring 0.8 V core voltage and 1.8 V I/O voltage from 3.6 V battery. IC Role / Device Role / Timing Role: High-efficiency dual-rail regulator supporting dynamic voltage scaling (DVS) via adjustable buck output and fixed LDO. Use Value: Adjustable buck (0.8–4.5 V) enables precise core voltage tuning; PFM mode extends standby time; thermal shutdown protects during enclosure overheating. |
Use Scenario: Ruggedized barcode scanners or field data loggers using 3.6 V Li-ion packs, needing 1.5 V for display driver and 2.5 V for ADC reference. IC Role / Device Role / Timing Role: Industrial-grade dual-output regulator with –40°C to +125°C operation, independent shutdown, and robust fault protection. Use Value: Wide temperature rating ensures reliability in outdoor environments; 165°C thermal shutdown prevents latch-up; PGND/AGND separation improves noise immunity. |
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 (~100 µA), 3.0 MHz switching, QFN-24 package | Supports more complex SoC power trees; larger footprint and higher cost; lacks auto PFM mode | Select when three regulated rails are required and higher switching frequency justifies added complexity |
| RT8059ZSP | Dual buck-only (no LDO), 600 mA/600 mA, 2.5 MHz, WDFN-10, no independent shutdown | Higher current capability but no low-noise auxiliary rail; unsuitable where LDO's PSRR or dropout advantage is needed | Prefer for high-current digital subsystems where dual switching efficiency outweighs LDO benefits |
Compared with TPS65023BRSBT and RT8059ZSP, TC1313-DG0EMF uniquely balances ultra-low IQ, integrated LDO noise suppression, and compact DFN packaging - making it optimal for space-constrained, battery-sensitive dual-rail systems where one rail demands low ripple and the other high efficiency.
Availability
TC1313-DG0EMF 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 consistent parametric performance across temperature extremes.
Supply support for TC1313-DG0EMF 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 global semiconductor company specializing in microcontrollers, analog, interface, and power management ICs, with a strong focus on embedded control and energy-efficient solutions.
The TC1313 product line was designed specifically for portable and battery-operated applications demanding high integration, minimal external components, and ultra-low quiescent current across dual voltage rails.
FAQ
What input voltage range does the TC1313-DG0EMF support?
The TC1313-DG0EMF supports an input voltage range of 2.7 V to 5.5 V on both VIN1 and VIN2 pins. This range accommodates single-cell Li-ion (2.7–4.2 V), USB 5 V (4.5–5.5 V), and regulated 3.3 V supplies. Input must exceed the selected output voltage plus dropout margin - e.g., for a 3.3 V buck output, minimum VIN is 3.3 V + 280 mV = 3.58 V under full load.
Can the TC1313-DG0EMF generate an adjustable buck output voltage?
Yes, the TC1313-DG0EMF supports adjustable buck output from 0.8 V to 4.5 V using an external resistor divider connected to the VFB/VOUT1 pin. The internal reference voltage is 0.8 V (±2.5%), and the feedback bias current is only –1.5 nA, minimizing divider current error. Fixed-output variants are also available, but TC1313-DG0EMF is the adjustable version.
How does the TC1313-DG0EMF manage efficiency at light loads?
The TC1313-DG0EMF automatically transitions from fixed-frequency PWM mode (2.0 MHz) to pulse-frequency modulation (PFM) mode when load drops below ~30 mA. In PFM mode, the buck regulator skips switching cycles to reduce gate drive losses, lowering total IQ to 38 µA typical - preserving battery life in standby or intermittent-use applications.
What is the recommended output capacitor for the LDO section of the TC1313-DG0EMF?
The LDO output (VOUT2) of the TC1313-DG0EMF is stable with a single 1 µF or larger X5R/X7R ceramic capacitor placed close to the VOUT2 and AGND pins. Larger values (e.g., 2.2 µF) improve load transient response but are not required for stability. Electrolytic or tantalum capacitors are unnecessary and discouraged due to higher ESR and size.
Does the TC1313-DG0EMF require external compensation components?
No, the TC1313-DG0EMF features fully internal compensation for both the buck regulator and LDO stages. Neither output requires external compensation capacitors or resistors - simplifying layout, reducing BOM count, and improving design repeatability. This is confirmed in the datasheet's "Both Outputs Internally Compensated" feature list and functional block diagram.
TC1313-DG0EMF 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:
- 3V, 500mA
- Voltage/Current - Output 2:
- 2.7V, 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-DG0EMF FAQ
1.How can I place an order for TC1313-DG0EMF through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-DG0EMF 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-DG0EMF reliable?
The price and inventory of TC1313-DG0EMF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-DG0EMF is usually 5 days.
3.What payment methods are accepted for TC1313-DG0EMF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-DG0EMF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-DG0EMF?
TC1313-DG0EMF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-DG0EMF 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-DG0EMF?
For technical support, including TC1313-DG0EMF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-DG0EMF requirements.
6.How does Aetrix verify that TC1313-DG0EMF is sourced from the original manufacturer or authorized distributors?
All TC1313-DG0EMF 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-DG0EMF meets industry standards.
7.What is the process for return or replacement of TC1313-DG0EMF?
All TC1313-DG0EMF units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-DG0EMF, 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-DG0EMF part is unused and in its original packaging.
Return procedure for TC1313-DG0EMF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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