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Microchip Technology TC1313-ZP0EUNTR
- Part No.:
- TC1313-ZP0EUNTR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1313-ZP0EUNTR.pdf
- Description:
- IC REG DL BUCK/LNR SYNC 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,289
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Product details
Overview
TC1313-ZP0EUNTR 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 adjustable (0.8–4.5 V) or fixed-output voltages (e.g., 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V) for buck and fixed 1.5–3.3 V for LDO, with 57 µA typical total quiescent current and -40°C to +125°C operating junction temperature - deployed in USB-powered portable medical instruments requiring compact, low-noise dual-rail power.
For engineers reviewing the TC1313-ZP0EUNTR datasheet, TC1313-ZP0EUNTR pinout, TC1313-ZP0EUNTR application, or TC1313-ZP0EUNTR equivalent, key selection criteria include independent SHDN1/SHDN2 control, 2.0 MHz fixed-frequency PWM mode with automatic PFM transition at light load, 137 mV typical LDO dropout at 200 mA, internal compensation, and UVLO/overtemperature/short-circuit protection.
Technical Context
The TC1313-ZP0EUNTR 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 (1.6–2.4 MHz range) under heavy load and transitioning automatically to low-quiescent PFM mode (<38 µA) below ~30 mA load. Its LDO uses a PMOS pass device 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), undervoltage lockout (2.55 V nominal, 200 mV hysteresis), and thermal shutdown at 165°C (10°C hysteresis). The buck output is sensed via VFB/VOUT1 pin (0.8 V reference), while the LDO output voltage is factory-fixed - no external feedback required for standard variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Output Current (Buck) | 500 mA - sufficient for processor core rails in handheld medical devices |
| Max Output Current (LDO) | 300 mA - supports auxiliary I/O or sensor bias rails with minimal external components |
| Total Quiescent Current | 57 µA typical - enables multi-day battery life in always-on portable instrumentation |
| Buck Switching Frequency | 2.0 MHz fixed (1.6–2.4 MHz) - allows use of small 4.7 µH inductors and reduces EMI filtering burden |
| LDO Dropout Voltage | 137 mV typical @ 200 mA - minimizes power loss when VIN2 is only marginally above VOUT2 |
| Operating Junction Temp | -40°C to +125°C - qualified for industrial and medical-grade thermal environments |
| UVLO Threshold | 2.55 V ±0.15 V - prevents erratic startup during brown-out conditions in battery-fed systems |
Pinout & Package
TC1313-ZP0EUNTR is packaged in a 10-lead 3×3 mm DFN with exposed thermal pad (EP), optimized for high thermal performance on 4-layer PCBs (θJA = 41°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic input (>45% VIN2); enables/disables 300 mA LDO output independently |
| 2 (VIN2) | LDO input supply | Accepts 2.7–5.5 V; must be tied closely to VIN1 to minimize noise coupling between rails |
| 3 (VOUT2) | LDO regulated output | Fixed voltage (per variant); requires ≥1 µF ceramic capacitor to AGND for stability |
| 4 (NC) | No connect | Not internally bonded; must remain unconnected per datasheet |
| 5 (AGND) | Analog ground reference | Separate from PGND; connects to analog ground plane to reduce switching noise injection |
| 6 (VFB/VOUT1) | Buck feedback or output sense | 0.8 V reference for adjustable versions; direct connection to VOUT1 for fixed-output variants |
| 7 (SHDN1) | Buck shutdown control input | Active-high logic input (>45% VIN1); enables/disables 500 mA buck output independently |
| 8 (VIN1) | Buck input supply | Accepts 2.7–5.5 V; shared source with VIN2 in most designs |
| 9 (LX) | Buck switch node | High-slew, high-current node connecting to inductor; requires short, low-inductance routing |
| 10 (PGND) | Power ground return | Carries high-frequency buck switching current; must be routed separately from AGND |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual shutdown | SHDN1 and SHDN2 allow sequenced power-up/down of buck and LDO rails without external logic |
| Auto PWM-to-PFM mode transition | Eliminates need for manual mode control; maintains regulation down to µA loads with <38 µA quiescent current |
| Internally compensated buck | Reduces BOM count - no external compensation network required for stable operation across full load range |
| Low-noise LDO output | 1.8 µV/√Hz output noise and 62 dB PSRR at 100 Hz enable clean analog/sensor biasing |
| Robust protection suite | Integrated UVLO, overtemperature (165°C), and short-circuit protection prevent field failures in unattended devices |
Applications
| Portable Medical Instrumentation | USB-Powered Diagnostic Device |
|---|---|
|
Use Scenario: Handheld blood glucose meter with LCD display, microcontroller, and electrochemical sensor interface. IC Role / Device Role / Timing Role: TC1313-ZP0EUNTR supplies 1.8 V (buck) to MCU core and 3.3 V (LDO) to sensor ADC and display driver. Use Value: Dual-rail integration eliminates discrete regulators; 57 µA quiescent current extends battery life beyond 12 months in standby. |
Use Scenario: Plug-and-play ECG monitor powered directly from USB 5 V bus. IC Role / Device Role / Timing Role: TC1313-ZP0EUNTR generates 1.2 V (buck) for low-power ARM Cortex-M core and 2.5 V (LDO) for precision analog front-end. Use Value: 2.0 MHz switching frequency avoids USB audio band; 137 mV LDO dropout enables stable 2.5 V rail even as USB voltage sags to 4.75 V. |
| Industrial Handheld Terminal | Wearable Health Monitor |
|
Use Scenario: Ruggedized barcode scanner with Bluetooth LE and OLED display operating in warehouse environments (-20°C to +60°C). IC Role / Device Role / Timing Role: TC1313-ZP0EUNTR delivers 3.3 V (buck) to RF transceiver and 1.5 V (LDO) to real-time clock and memory backup. Use Value: -40°C to +125°C junction rating ensures reliability across ambient extremes; independent shutdown enables RTC retention during main system sleep. |
Use Scenario: Skin-contact pulse oximeter with photodiode array and BLE SoC, powered by coin cell. IC Role / Device Role / Timing Role: TC1313-ZP0EUNTR provides 1.8 V (buck) to BLE radio and 3.3 V (LDO) to analog signal chain and LED drivers. Use Value: PFM mode draws <38 µA at light load, enabling >30-day runtime on CR2032; small 3×3 mm DFN fits constrained wearable PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RSBR | Triple-output (2 buck + 1 LDO); higher IQ (100 µA); 2.25 MHz switching; QFN-24 package | Supports more complex SoC power sequencing; larger footprint and higher cost | Choose when needing third rail or tighter voltage accuracy (±1% vs ±2.5%) |
| RT8059ZSP | Dual buck only (no integrated LDO); 600 mA/600 mA outputs; 3 MHz; WDFN-10 package | Lacks auxiliary LDO rail - requires external LDO for noise-sensitive analog sections | Prefer when both rails are high-current digital supplies and board space permits discrete LDO addition |
Compared with TPS65023RSBR and RT8059ZSP, TC1313-ZP0EUNTR uniquely balances ultra-low quiescent current (57 µA), integrated LDO for analog biasing, and compact DFN packaging - making it optimal for space-constrained, battery-operated medical and portable instrumentation where dual-rail simplicity and standby efficiency are critical.
Availability
TC1313-ZP0EUNTR is available at Aetrix Electronics and suitable for portable medical instrumentation, USB-powered diagnostic devices, and industrial handheld terminals requiring stable component supply with long-term production support.
Supply support for TC1313-ZP0EUNTR 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 design and manufacturing operations.
The TC1313 product line was designed specifically for compact, dual-rail power delivery in battery-powered portable electronics - emphasizing low quiescent current, integrated protection, and minimal external component count for rapid time-to-market.
FAQ
What output voltage options does TC1313-ZP0EUNTR support?
TC1313-ZP0EUNTR supports adjustable buck output from 0.8 V to 4.5 V (via external resistor divider on VFB/VOUT1) and fixed LDO outputs of 1.5 V, 1.8 V, 2.5 V, or 3.3 V - determined by factory configuration. The specific variant TC1313-ZP0EUNTR is a fixed-output version with 1.8 V buck and 3.3 V LDO, as indicated by the "ZP" suffix per Microchip's ordering guide.
Does TC1313-ZP0EUNTR require external compensation components?
No, TC1313-ZP0EUNTR features internally compensated control loops for both the buck and LDO regulators. This eliminates the need for external compensation networks, reducing BOM count and layout complexity - confirmed in the datasheet's "Features" section and functional block diagram.
How does TC1313-ZP0EUNTR manage efficiency at light load?
TC1313-ZP0EUNTR automatically transitions its buck regulator from fixed-frequency PWM mode (2.0 MHz) to pulse-frequency modulation (PFM) mode when load drops below ~30 mA. In PFM mode, TC1313-ZP0EUNTR draws only 38 µA typical quiescent current, maintaining regulation while maximizing battery runtime in standby or intermittent-use applications.
What is the thermal performance of TC1313-ZP0EUNTR in its DFN package?
TC1313-ZP0EUNTR in the 10-lead 3×3 mm DFN package achieves θJA = 41°C/W on a typical 4-layer PCB with internal ground plane and two vias in the exposed thermal pad (EP), which must be connected to AGND. This enables continuous 500 mA buck output at ambient temperatures up to +85°C without derating, per thermal characterization data on page 7 of DS21974B.
Can TC1313-ZP0EUNTR operate with separate input sources for VIN1 and VIN2?
No - the datasheet explicitly states in Note 8 that "VIN1 and VIN2 are supplied by the same input source," and Section 3.1–3.2 recommends connecting VIN1 and VIN2 together with "board traces as short as possible." Using separate inputs risks violating absolute maximum ratings and may cause instability or damage due to PGND–AGND potential differences.
TC1313-ZP0EUNTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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:
- 1.8V, 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-ZP0EUNTR FAQ
1.How can I place an order for TC1313-ZP0EUNTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-ZP0EUNTR 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-ZP0EUNTR reliable?
The price and inventory of TC1313-ZP0EUNTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-ZP0EUNTR is usually 5 days.
3.What payment methods are accepted for TC1313-ZP0EUNTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-ZP0EUNTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-ZP0EUNTR?
TC1313-ZP0EUNTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-ZP0EUNTR 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-ZP0EUNTR?
For technical support, including TC1313-ZP0EUNTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-ZP0EUNTR requirements.
6.How does Aetrix verify that TC1313-ZP0EUNTR is sourced from the original manufacturer or authorized distributors?
All TC1313-ZP0EUNTR 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-ZP0EUNTR meets industry standards.
7.What is the process for return or replacement of TC1313-ZP0EUNTR?
All TC1313-ZP0EUNTR units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-ZP0EUNTR, 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-ZP0EUNTR part is unused and in its original packaging.
Return procedure for TC1313-ZP0EUNTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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