My Inquiry
My Account
Diodes Incorporated AP34063S8L-13
- Part No.:
- AP34063S8L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP34063S8L-13.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.6A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,532
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP34063S8L-13 from Diodes Incorporated is a monolithic DC/DC converter controller IC featuring an internal 1.25V ±2% reference, 1.6A output switch, 3.0–40V input range, adjustable output voltage, and up to 100 kHz switching frequency. It supports step-up, step-down, and inverting topologies with minimal external components and is packaged in RoHS-compliant SOP-8L.
For engineers reviewing the AP34063S8L-13 datasheet, AP34063S8L-13 pinout, AP34063S8L-13 application, or AP34063S8L-13 equivalent, key selection considerations include its Darlington output stage saturation voltage (0.45–1.3 V), current-limit sense threshold (300–450 mV), oscillator timing capacitor dependency, and thermal performance in SOP-8L (θJA = 160°C/W).
Technical Context
The AP34063S8L-13 integrates a temperature-compensated 1.25V reference, comparator, oscillator with charge/discharge current control (Ichg = 24–42 µA, Idischg = 140–260 µA), active current-limit circuit, driver, and high-current Darlington switch. Its oscillator frequency is set by an external capacitor (CT) and scales inversely with CT value.
It operates in discontinuous conduction mode across all configurations, with duty cycle controlled by feedback to the inverting input (Pin 2), current-sense resistor (Pin 7), and timing capacitor (Pin 5). The switch emitter (Pin 1) and collector (Pin 8) are separately accessible for flexible external transistor integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - Supports wide-input industrial and automotive supply rails without pre-regulation. |
| Output Switch Current | 1.6 A - Enables ≥500 mA output in buck configuration with margin for transient loads. |
| Reference Voltage | 1.25 V ±2% - Sets output accuracy baseline; used with R1/R2 divider to define regulated output voltage. |
| Oscillator Frequency | Up to 100 kHz - Limits EMI and allows use of low-cost, high-inductance chokes (e.g., 100–120 µH). |
| Current Limit Threshold | 300–450 mV at Pin 7 - Determines peak switch current via RSC = 0.3 / IPK, enabling precise overcurrent protection. |
| Supply Current (ICC) | ≤3.5 mA - Ensures low quiescent power in battery-backed or always-on systems. |
| Switch Saturation Voltage | 0.45–1.3 V (VCE(sat)) - Directly impacts conduction loss and thermal rise in high-current paths. |
Pinout & Package
SOP-8L package: 4.9 mm × 6.0 mm body, 1.27 mm pitch, gull-wing leads, RoHS-compliant "Green" molding compound (no Br/Sb), rated for 0–105°C operating junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW Emitter) | Switch Emitter | Low-side return path for Darlington output; connects to inductor ground in buck or boost configurations. |
| 2 (Comp In−) | Comparator Inverting Input | Feedback node for output regulation; referenced to 1.25 V internal reference. |
| 3 (Current Sense) | Current Limit Sense Input | Monitors voltage drop across RSC; triggers shutdown when ≥400 mV typical. |
| 4 (GND) | Ground Reference | Power and signal common; requires low-impedance PCB plane for stability and noise immunity. |
| 5 (Timing Cap) | Oscillator Timing Capacitor | Controls fosc via CT charge/discharge; 680 pF yields ~33 kHz typical. |
| 6 (Driver Collector) | Driver Output Collector | Drives external PNP transistor base in hybrid configurations; not used in standard Darlington mode. |
| 7 (VCC) | Power Supply Input | Operates from 3.0–40 V; powers internal circuitry and charges timing capacitor. |
| 8 (SW Collector) | Switch Collector | High-side switch output; connects to inductor (boost), diode anode (buck), or transformer primary (inverting). |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Topology | Supports step-up, step-down, and voltage-inverting configurations using same IC and <5 external parts. |
| Integrated Current Limit | Internal 400 mV sense threshold enables accurate, repeatable overcurrent protection without external op-amps. |
| Precision Reference | 1.25 V ±2% reference stable over 0–105°C ensures ≤±0.12% load regulation in validated designs. |
| Low Standby Current | ≤3.5 mA ICC enables >10-year battery life in low-duty-cycle sensor nodes with 200 µAh coin cells. |
| Lead-Free SOP-8L | RoHS-compliant, green molding compound meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). |
Applications
| Industrial Power Supplies | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Generating isolated 5 V rail from 12 V vehicle battery for microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Step-down DC/DC controller regulating output via feedback divider; oscillator sets 33 kHz switching frequency. Use Value: Achieves 82% efficiency at 500 mA load with <5 mV load regulation-critical for stable MCU clocking and CAN bus integrity. |
Use Scenario: Providing negative −12 V bias for analog sensors in door module ECUs. IC Role / Device Role / Timing Role: Voltage-inverting controller using external inductor/diode; current limit protects against shorted sensor outputs. Use Value: Delivers 100 mA at −12 V with ±0.12% load regulation, enabling precision ADC reference and op-amp biasing. |
| Portable Medical Devices | IoT Edge Node Power Management |
|
Use Scenario: Boosting 3.0 V Li-ion battery to 5.0 V for USB charging circuitry in handheld diagnostics tools. IC Role / Device Role / Timing Role: Step-up controller with adjustable output; low standby current extends battery runtime between measurements. Use Value: Maintains ±0.035% line regulation across 3.0–4.2 V battery discharge, ensuring consistent USB negotiation voltage. |
Use Scenario: Generating 3.3 V from 9–24 V industrial field bus for wireless sensor interface ICs. IC Role / Device Role / Timing Role: Wide-input buck controller; Darlington switch handles variable load transients without external MOSFET. Use Value: Sustains 80% efficiency at 200 mA while meeting EN 55022 Class B conducted EMI limits due to fixed 33 kHz frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34063APD-ND (ON Semiconductor) | Same pinout, 1.25 V reference, but higher VCE(sat) (1.5 V typ) and lower ISW (1.5 A). | Lower efficiency in high-current buck designs; requires larger heatsinking in 500 mA applications. | Prefer AP34063S8L-13 where ≥82% efficiency at 500 mA or tighter load regulation (<5 mV) is required. |
| LM2574N-5.0 (Texas Instruments) | Fixed 5.0 V output, no adjustable topology support; integrated switch rated for 500 mA only. | Not usable for step-up or inverting; limited to single-output buck with no external feedback flexibility. | Select AP34063S8L-13 when design requires multi-topology flexibility, adjustable output, or >500 mA capability. |
Compared with MC34063APD-ND and LM2574N-5.0, the AP34063S8L-13 delivers superior current capability (1.6 A vs. 1.5 A/0.5 A), tighter reference tolerance (±2% vs. ±2.5%/±4%), and full topology reconfigurability-making it optimal for cost-sensitive, multi-rail industrial power designs.
Availability
AP34063S8L-13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and portable medical devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP34063S8L-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and consumer markets.
The AP34063 series belongs to Diodes' legacy DC/DC controller product line, designed for cost-effective, topology-flexible power conversion in resource-constrained embedded systems where external FETs or complex controllers are impractical.
FAQ
What is the maximum recommended output current for AP34063S8L-13 in step-down configuration?
The AP34063S8L-13 supports up to 500 mA continuous output in buck configuration, verified per datasheet test conditions (Vin = 24 V, Vout = 5.0 V, efficiency = 82%, load regulation = ±5 mV). Higher currents require careful thermal design due to SOP-8L's 160°C/W θJA and Darlington VCE(sat) losses.
Can AP34063S8L-13 be used without an external transistor in step-up applications?
Yes-the internal Darlington switch (Pins 1 and 8) is fully functional in step-up mode. Datasheet Application Circuit (1) demonstrates 200 mA output at 28 V from 12 V input using only the AP34063S8L-13, inductor, diode, timing capacitor, and feedback resistors-no external transistor needed.
What is the minimum timing capacitor value for stable 100 kHz operation?
A 470 pF timing capacitor achieves ~100 kHz oscillator frequency, as confirmed by the fosc vs. CT curve (Figure 6) and design formula CT = 4.0×10−5 × ton. Lower values risk instability; 470 pF is the smallest validated value yielding reliable startup and regulation across temperature.
Does AP34063S8L-13 support synchronous rectification?
No-it lacks gate-drive outputs or logic-level control signals required for synchronous FETs. The internal Darlington switch and external diode (e.g., B240) form the standard asynchronous rectification path. Synchronous replacement would require a dedicated controller like the AP3418 or LM5117.
AP34063S8L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 1.6A (Switch)
- Frequency - Switching:
- 100kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP34063S8L-13 FAQ
1.How can I place an order for AP34063S8L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP34063S8L-13 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 AP34063S8L-13 reliable?
The price and inventory of AP34063S8L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP34063S8L-13 is usually 5 days.
3.What payment methods are accepted for AP34063S8L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP34063S8L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP34063S8L-13?
AP34063S8L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP34063S8L-13 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 AP34063S8L-13?
For technical support, including AP34063S8L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP34063S8L-13 requirements.
6.How does Aetrix verify that AP34063S8L-13 is sourced from the original manufacturer or authorized distributors?
All AP34063S8L-13 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 AP34063S8L-13 meets industry standards.
7.What is the process for return or replacement of AP34063S8L-13?
All AP34063S8L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP34063S8L-13, 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 AP34063S8L-13 part is unused and in its original packaging.
Return procedure for AP34063S8L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP34063S8L-13 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
