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Microchip Technology TC1313-ZS0EMF
- Part No.:
- TC1313-ZS0EMF
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-ZS0EMF.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,439
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Product details
Overview
TC1313-ZS0EMF 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 total quiescent current of 57 µA typical and operating junction temperature range of –40°C to +125°C. It is used in portable medical instruments and USB-powered devices requiring tightly regulated dual-rail supplies.
For engineers reviewing the TC1313-ZS0EMF datasheet, TC1313-ZS0EMF pinout, TC1313-ZS0EMF application, or TC1313-ZS0EMF equivalent, key selection criteria include independent shutdown control per rail, 2.0 MHz fixed-frequency PWM operation with automatic PFM transition, 137 mV typical LDO dropout at 200 mA, internal compensation, and UVLO/overtemperature/short-circuit protection - all validated for industrial-grade reliability in space-constrained battery-powered systems.
Technical Context
The TC1313-ZS0EMF 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 (±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 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), undervoltage lockout (2.55 V nominal, 200 mV hysteresis), and thermal shutdown at 165°C (10°C hysteresis). The device shares a common input voltage rail (VIN1 = VIN2 = 2.7–5.5 V), requires no external compensation, and integrates protection against overcurrent, short circuit, and thermal overload on both outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Output Current | 500 mA max - supports processor core rails with high transient response and >90% efficiency at full load |
| LDO Output Current | 300 mA max - powers auxiliary analog or I/O rails with minimal external components (1 µF ceramic cap) |
| Total Quiescent Current | 57 µA typical - enables multi-day battery life in always-on portable medical and handheld devices |
| 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 - minimizes power loss when input is near output (e.g., 3.3 V IN → 3.3 V OUT) |
| Operating Junction Temp | –40°C to +125°C - qualified for automotive cabin and industrial embedded environments without derating |
| UVLO Threshold | 2.55 V ±0.15 V - prevents erratic startup during brown-out; 200 mV hysteresis avoids oscillation near threshold |
Pinout & Package
TC1313-ZS0EMF is housed in a 3×3 mm, 10-lead DFN package with exposed thermal pad (EP), optimized for thermal performance on 4-layer PCBs (θJA = 41°C/W). The EP must be soldered to AGND for safe operation and thermal dissipation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic input (>45% VIN enables LDO; <15% VIN disables it - supports independent rail sequencing) |
| 2 (VIN2) | LDO input supply | Accepts 2.7–5.5 V; must be tied directly to VIN1 with minimal trace length to reduce noise coupling |
| 3 (VOUT2) | LDO regulated output | Fixed 1.5/1.8/2.5/3.3 V output; requires ≥1 µF ceramic capacitor to AGND for stability and low noise |
| 4 (NC) | No-connect terminal | Not internally bonded - must remain unconnected and unstubbed on PCB layout |
| 5 (AGND) | Analog ground reference | Low-noise return for feedback and control circuits; separate from PGND to avoid switching noise injection |
| 6 (VFB/VOUT1) | Buck feedback or output sense | Connects to center of resistor divider for adjustable VOUT1; ties directly to VOUT1 for fixed-output variants |
| 7 (SHDN1) | Buck shutdown control input | Active-high logic input identical in behavior to SHDN2 - enables independent enable/disable of buck stage |
| 8 (VIN1) | Buck input supply | Primary input for buck stage; shares same source as VIN2 - critical to minimize loop area between VIN1/VIN2 and PGND |
| 9 (LX) | Buck switch node | High-slew-rate connection to inductor; requires shortest possible trace and local decoupling to suppress EMI |
| 10 (PGND) | Power ground return | High-current return path for buck switching; must be routed separately from AGND and joined only at single point |
Key Features
| Feature | Design Value |
|---|---|
| Independent shutdown per regulator | Enables precise power sequencing (e.g., boot LDO first, then enable buck) and dynamic rail gating for system-level power savings |
| Automatic PWM-to-PFM mode transition | Eliminates need for external mode-control logic; maintains regulation down to µA loads while reducing IQ to 38 µA (buck only) |
| Internally compensated buck and LDO | Reduces BOM count by removing external compensation networks - supports stable operation with standard 4.7 µH/4.7 µF/1 µF passive set |
| Low-noise 2.0 MHz switching | Delivers <8 mVPP output ripple and enables use of smaller filters - critical for noise-sensitive analog and RF subsystems |
| Thermal and short-circuit protection | Shuts down both outputs at 165°C (10°C hysteresis) and limits peak LX current to 700 mA - prevents damage during fault conditions |
Applications
| Portable Medical Instrument Power | USB-Powered Peripheral Supply |
|---|---|
Use Scenario: Handheld glucose meters and pulse oximeters require dual-rail power: 1.8 V for microcontroller core and 3.3 V for sensor interface and display backlight. IC Role / Device Role / Timing Role: TC1313-ZS0EMF provides tightly regulated, independently controllable 1.8 V (buck) and 3.3 V (LDO) rails from a single 3.7 V Li-ion cell. Use Value: 137 mV LDO dropout enables full 3.3 V output even as battery discharges to 3.43 V; 57 µA total IQ extends battery life beyond 7 days in standby. |
Use Scenario: USB audio adapters and HID peripherals draw power exclusively from USB 5 V bus and must meet strict inrush and EMI limits. IC Role / Device Role / Timing Role: TC1313-ZS0EMF generates 1.2 V for digital logic and 2.5 V for analog codec from 4.5–5.5 V USB input, with independent shutdown for sleep/wake control. Use Value: 2.0 MHz switching avoids AM radio band interference; internal compensation eliminates tuning effort; UVLO prevents malfunction during USB hot-plug transients. |
| Cellular Phone Baseband Power | Industrial Handheld Terminal Supply |
Use Scenario: Feature phones with ARM9 baseband processors demand low-noise, high-efficiency core voltage (1.2 V) and clean I/O voltage (2.8 V). IC Role / Device Role / Timing Role: TC1313-ZS0EMF delivers 1.2 V buck output and 2.8 V LDO output (via custom VOUT2 option) from 3.4–4.2 V battery input. Use Value: Synchronous rectification achieves >92% efficiency at 300 mA; PFM mode reduces IQ to 38 µA during idle - critical for talk-time optimization. |
Use Scenario: Ruggedized barcode scanners operate in wide ambient temperatures (–20°C to +70°C) and require reliable dual-rail power from 3.6 V primary battery. IC Role / Device Role / Timing Role: TC1313-ZS0EMF supplies 1.5 V for FPGA configuration and 3.3 V for communication interface, with guaranteed operation up to +125°C junction. Use Value: –40°C to +125°C rating ensures functionality across storage, operation, and transient thermal events; overtemperature shutdown prevents field failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RGZR | Triple-output (2 buck + 1 LDO), higher IQ (80 µA), 3.0 MHz switching, QFN-24 package | Supports more complex SoC power trees; requires larger PCB area and additional external components | Choose TPS65023RGZR when three regulated rails are needed and board space permits larger footprint |
| RT8059ZSP | Dual buck-only (no LDO), 600 mA/600 mA, 1.5 MHz, WDFN-10 package, no PFM mode | Lacks low-noise linear output - unsuitable for analog/RF sections requiring ultra-low ripple | Choose RT8059ZSP only if both rails are digital and lowest possible cost outweighs noise sensitivity |
Compared with TPS65023RGZR and RT8059ZSP, TC1313-ZS0EMF uniquely balances ultra-low quiescent current, integrated LDO noise suppression, and compact DFN packaging - making it optimal for space-constrained, battery-operated systems needing exactly two complementary rails with mixed analog/digital loads.
Availability
TC1313-ZS0EMF is available at Aetrix Electronics and suitable for portable medical instruments, USB-powered peripherals, and handheld industrial terminals requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.
Supply support for TC1313-ZS0EMF 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, and power management semiconductors, with a focus on reliability, longevity, and design-in support for industrial and automotive markets.
The TC1313 product line was designed specifically for dual-rail battery-powered applications where size, efficiency, and low-noise performance are critical - delivering integrated buck+LDO functionality in minimal footprint without sacrificing protection or thermal robustness.
FAQ
What output voltage options does the TC1313-ZS0EMF support?
The TC1313-ZS0EMF supports adjustable buck output from 0.8 V to 4.5 V via external resistor divider on the VFB pin, and fixed buck voltages including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The LDO output is fixed at 1.5 V, 1.8 V, 2.5 V, or 3.3 V - the ZS0EMF variant is configured for 3.3 V LDO output. All options are factory-set and not user-programmable.
Does the TC1313-ZS0EMF require external compensation components?
No, the TC1313-ZS0EMF does not require external compensation components for either the buck or LDO regulator. Both control loops are internally compensated, enabling stable operation with standard 4.7 µH inductor and 4.7 µF/1 µF ceramic capacitors - significantly simplifying layout and reducing BOM count compared to discrete regulator solutions.
How does the TC1313-ZS0EMF manage efficiency across load ranges?
The TC1313-ZS0EMF uses automatic mode transition: it operates in fixed-frequency 2.0 MHz PWM mode above ~80 mA load for high efficiency (>90% typical) and low noise, then seamlessly shifts to PFM mode below ~30 mA to reduce quiescent current to 38 µA (buck only) or 44 µA (LDO only). This preserves battery life without compromising regulation accuracy or requiring external mode control.
What thermal considerations apply to the TC1313-ZS0EMF in a 10-lead DFN package?
The TC1313-ZS0EMF in its 3×3 mm DFN package has θJA = 41°C/W on a typical 4-layer board with internal ground plane and thermal vias under the exposed pad (EP). To ensure safe operation up to +125°C junction temperature, the EP must be soldered to AGND, and PCB copper area around the package should be maximized. Thermal shutdown activates at 165°C with 10°C hysteresis.
Can the TC1313-ZS0EMF be used with input voltages below 2.7 V?
No, the TC1313-ZS0EMF has an absolute minimum input voltage of 2.7 V per datasheet Absolute Maximum Ratings and Electrical Characteristics. Operation below this violates specification and may result in UVLO activation (2.55 V threshold) or unstable regulation. For sub-2.7 V inputs, alternative regulators such as the MIC2280 or TPS6274x series should be evaluated.
TC1313-ZS0EMF 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:
- Adj, 500mA
- Voltage/Current - Output 2:
- 1.5V, 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-ZS0EMF FAQ
1.How can I place an order for TC1313-ZS0EMF through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-ZS0EMF 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-ZS0EMF reliable?
The price and inventory of TC1313-ZS0EMF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-ZS0EMF is usually 5 days.
3.What payment methods are accepted for TC1313-ZS0EMF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-ZS0EMF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-ZS0EMF?
TC1313-ZS0EMF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-ZS0EMF 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-ZS0EMF?
For technical support, including TC1313-ZS0EMF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-ZS0EMF requirements.
6.How does Aetrix verify that TC1313-ZS0EMF is sourced from the original manufacturer or authorized distributors?
All TC1313-ZS0EMF 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-ZS0EMF meets industry standards.
7.What is the process for return or replacement of TC1313-ZS0EMF?
All TC1313-ZS0EMF units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-ZS0EMF, 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-ZS0EMF part is unused and in its original packaging.
Return procedure for TC1313-ZS0EMF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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