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Microchip Technology TC1313-ZG0EMFTR
- Part No.:
- TC1313-ZG0EMFTR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-ZG0EMFTR.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,546
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Product details
Overview
TC1313-ZG0EMFTR 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 independent, adjustable (0.8–4.5 V) or fixed (e.g., 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V) output voltages with 2.0 MHz fixed-frequency PWM operation, <57 µA total quiescent current, and -40°C to +125°C junction temperature range - optimized for battery-powered portable electronics requiring tightly regulated core and I/O rails.
For engineers reviewing the TC1313-ZG0EMFTR datasheet, TC1313-ZG0EMFTR pinout, TC1313-ZG0EMFTR application, or TC1313-ZG0EMFTR equivalent, this page provides verified technical context, validated pin functions, confirmed dual-rail design trade-offs (buck efficiency vs. LDO noise rejection), and real-world selection guidance for USB-powered devices, handheld medical instruments, and cellular phone power subsystems.
Technical Context
The TC1313-ZG0EMFTR implements a current-mode synchronous buck regulator with automatic PWM-to-PFM mode transition at ~30–80 mA load thresholds, enabling >90% efficiency at heavy loads and ultra-low 38 µA quiescent current in PFM mode. Its integrated N- and P-channel MOSFETs feature typical RDS(on) of 450 mΩ each, supporting 100% duty cycle operation for minimal dropout under low-VIN/VOUT conditions.
The companion LDO operates with 137 mV typical dropout at 200 mA, 62 dB PSRR at 100 Hz, and 1.8 µV/√Hz output noise - stabilized by a single 1 µF ceramic capacitor. Both regulators share independent shutdown controls (SHDN1/SHDN2), undervoltage lockout (2.55 V nominal), thermal shutdown (165°C), and short-circuit protection, with AGND and PGND pins physically separated to minimize noise coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual-rail: 500 mA buck (VOUT1) + 300 mA LDO (VOUT2), independently controllable |
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and USB 5 V inputs without external pre-regulation |
| Buck Switching Frequency | 2.0 MHz (typical, ±0.4 MHz) - enables use of small 4.7 µH inductors and compact 4.7 µF input/output capacitors |
| Total Quiescent Current | 57 µA (typical) - ensures >100-hour standby in portable devices with both outputs active but unloaded |
| LDO Dropout Voltage | 137 mV (typical @ 200 mA) - allows efficient regulation from 3.3 V input to 3.3 V output with minimal headroom loss |
| Operating Junction Temp | -40°C to +125°C - qualified for automotive cabin and industrial embedded environments without derating |
| Protection Features | UVLO (2.55 V), thermal shutdown (165°C), overcurrent, and short-circuit protection on both outputs |
Pinout & Package
TC1313-ZG0EMFTR is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), rated θJA = 41°C/W on a 4-layer board with internal ground plane and 2 vias to AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic (>45% VIN); enables/disables 300 mA LDO output independently of buck stage |
| 2 (VIN2) | LDO input supply | Accepts same 2.7–5.5 V input as VIN1; must be routed with minimal trace length to VIN1 |
| 3 (VOUT2) | LDO regulated output | Fixed-voltage output (1.5/1.8/2.5/3.3 V); requires ≥1 µF ceramic capacitor to AGND for stability |
| 4 (NC) | No-connect terminal | Not internally bonded; must remain unconnected per datasheet |
| 5 (AGND) | Analog reference ground | Reference node for feedback circuitry; must be isolated from high-current PGND and tied to EP via vias |
| 6 (VFB/VOUT1) | Buck feedback or output sense | Connects to center of resistor divider for adjustable VOUT1; directly to VOUT1 for fixed-output variants |
| 7 (SHDN1) | Buck shutdown control input | Active-high logic (>45% VIN); enables/disables 500 mA buck output without affecting LDO |
| 8 (VIN1) | Buck input supply | Main power input for synchronous buck; shares source with VIN2 but requires separate local decoupling |
| 9 (LX) | Switch node | High-slew-rate connection to external inductor; demands shortest possible trace to minimize EMI and losses |
| 10 (PGND) | Power ground return | Return path for buck switching current; must be routed separately from AGND and connected only at single point |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-regulator architecture | Eliminates need for two discrete DC/DC converters - reduces BOM count, PCB area, and layout complexity for dual-rail systems |
| Automatic PWM-to-PFM mode transition | Enables seamless efficiency optimization across 0–500 mA load range without external control or firmware intervention |
| Internally compensated buck loop | Removes requirement for external compensation components - simplifies design validation and accelerates time-to-market |
| Independent shutdown inputs (SHDN1/SHDN2) | Supports dynamic rail sequencing and power-state management (e.g., suspend LDO while keeping buck active) |
| Low-noise LDO with 62 dB PSRR | Suppresses switching noise from buck stage, enabling clean analog/RF supply rails without additional filtering |
| Exposed thermal pad (EP) | Provides direct thermal path to AGND plane - sustains full 500 mA buck output at +85°C ambient without derating |
Applications
| Cellular Phone Baseband Power | USB-Powered Portable Instrument |
|---|---|
Use Scenario: Powering application processor core (1.2 V @ 400 mA) and memory I/O (3.3 V @ 200 mA) from single Li-ion cell. IC Role / Device Role / Timing Role: TC1313-ZG0EMFTR provides tightly regulated, sequenced dual-rail supply with independent enable control and thermal monitoring. Use Value: Enables 100% duty-cycle buck operation down to 2.7 V input, maintaining core voltage during deep discharge while LDO supplies noise-sensitive peripherals. |
Use Scenario: Medical glucose meter powered via USB 5 V, requiring stable 1.8 V sensor bias and 3.3 V microcontroller supply. IC Role / Device Role / Timing Role: TC1313-ZG0EMFTR serves as primary power source with UVLO and thermal protection for safety-critical operation. Use Value: 57 µA quiescent current extends battery backup runtime; 1.8 µV/√Hz LDO noise ensures ADC accuracy without post-regulation filtering. |
| Handheld Diagnostic Scanner | Industrial PDA System Rail |
Use Scenario: Multi-rail power for CMOS image sensor (2.8 V), FPGA I/O (3.3 V), and ARM core (1.1 V) in compact handheld scanner. IC Role / Device Role / Timing Role: TC1313-ZG0EMFTR delivers synchronized startup and independent shutdown for modular subsystem power control. Use Value: Adjustable buck output (0.8–4.5 V) supports precise core voltage tuning; LDO's 137 mV dropout minimizes heat generation in sealed enclosure. |
Use Scenario: Ruggedized PDA operating in factory environment with wide ambient temperature (-40°C to +85°C). IC Role / Device Role / Timing Role: TC1313-ZG0EMFTR acts as main PMIC with extended junction temperature rating and robust protection features. Use Value: -40°C to +125°C operation ensures reliability without thermal throttling; dual shutdown inputs support fail-safe power-down sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple-output (2 buck + 1 LDO), higher IQ (85 µA), 2.25 MHz switching, QFN-24 package | Supports three-rail systems; larger footprint and higher cost; lacks TC1313-ZG0EMFTR's ultra-low 57 µA IQ | Select when third regulated rail is required and board space permits larger package |
| RT8059ZSP | Dual buck (600 mA + 600 mA), no integrated LDO, 3 MHz switching, WDFN-10 package | Higher current capability but no low-noise linear output; unsuitable for noise-sensitive analog rails | Select when both rails demand high-efficiency switching and LDO noise rejection is unnecessary |
Compared with TPS65023BRSBR and RT8059ZSP, TC1313-ZG0EMFTR uniquely balances ultra-low quiescent current, integrated low-noise LDO, and compact DFN packaging - making it optimal for space-constrained, battery-sensitive dual-rail applications where one rail requires clean linear regulation.
Availability
TC1313-ZG0EMFTR is available at Aetrix Electronics and suitable for cellular phones, USB-powered devices, and handheld medical instruments requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TC1313-ZG0EMFTR 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 components, and power management ICs, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The TC1313 product line was designed specifically for portable and battery-operated applications demanding high integration, ultra-low quiescent current, and robust protection - targeting cellular handsets, PDAs, and portable instrumentation markets.
FAQ
What output voltage options does TC1313-ZG0EMFTR support for its buck and LDO stages?
TC1313-ZG0EMFTR supports adjustable buck output from 0.8 V to 4.5 V (via external resistor divider on VFB pin) and fixed buck outputs including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The LDO stage offers fixed outputs only: 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The specific configuration of TC1313-ZG0EMFTR corresponds to a fixed 3.3 V LDO output and an adjustable buck stage - confirmed by Microchip's part numbering convention and DS21974B revision history.
How does TC1313-ZG0EMFTR manage efficiency across varying load conditions?
TC1313-ZG0EMFTR automatically transitions between fixed-frequency PWM mode (>90% efficiency at heavy loads) and pulse-frequency modulation (PFM) mode (<38 µA quiescent current at light loads). The transition occurs near 30–80 mA based on inductor current sensing, ensuring optimal efficiency from 0 mA to full 500 mA buck output without external control. This behavior is intrinsic to the IC's control architecture and requires no configuration.
Can TC1313-ZG0EMFTR operate with separate input sources for VIN1 and VIN2?
No - TC1313-ZG0EMFTR requires VIN1 and VIN2 to be connected together with short, low-inductance traces, as explicitly stated in DS21974B Note 8 and Section 4.1. Using separate inputs violates the internal UVLO and bias circuit design, risks improper startup sequencing, and may cause undefined behavior or damage due to potential voltage differentials exceeding ±0.3 V between PGND and AGND.
What is the minimum output capacitance required for stable operation of TC1313-ZG0EMFTR's LDO stage?
The LDO stage of TC1313-ZG0EMFTR requires a minimum of 1 µF ceramic capacitor connected between VOUT2 and AGND for stability across all operating conditions - as specified in Section 3.3 of DS21974B and validated in Typical Application Circuits on page 3. Lower values risk oscillation or poor transient response; X5R/X7R dielectrics are recommended for temperature stability.
Does TC1313-ZG0EMFTR include thermal protection, and how does it behave during overload?
Yes - TC1313-ZG0EMFTR incorporates thermal shutdown that activates at +165°C junction temperature (typical) with 10°C hysteresis. During sustained overload, the device disables both regulators, holds outputs in high-impedance state, and remains latched off until junction temperature falls below +155°C. This behavior is fully autonomous and requires no external circuitry, protecting against PCB-level thermal runaway.
TC1313-ZG0EMFTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- Adj, 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-ZG0EMFTR FAQ
1.How can I place an order for TC1313-ZG0EMFTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-ZG0EMFTR 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-ZG0EMFTR reliable?
The price and inventory of TC1313-ZG0EMFTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-ZG0EMFTR is usually 5 days.
3.What payment methods are accepted for TC1313-ZG0EMFTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-ZG0EMFTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-ZG0EMFTR?
TC1313-ZG0EMFTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-ZG0EMFTR 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-ZG0EMFTR?
For technical support, including TC1313-ZG0EMFTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-ZG0EMFTR requirements.
6.How does Aetrix verify that TC1313-ZG0EMFTR is sourced from the original manufacturer or authorized distributors?
All TC1313-ZG0EMFTR 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-ZG0EMFTR meets industry standards.
7.What is the process for return or replacement of TC1313-ZG0EMFTR?
All TC1313-ZG0EMFTR units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-ZG0EMFTR, 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-ZG0EMFTR part is unused and in its original packaging.
Return procedure for TC1313-ZG0EMFTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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