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Diodes Incorporated AP1609SL-13
- Part No.:
- AP1609SL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1609SL-13.pdf
- Description:
- IC REG BOOST ADJ 2.4A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,528
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Product details
Overview
AP1609SL-13 from Diodes Incorporated is a PWM/PFM dual-mode step-up DC/DC converter with integrated 100 mΩ N-channel MOSFET, 300 kHz ±20% oscillator, 1.23 V feedback reference, and 2.4 A switching current capability. It operates from 2.5–6 V input to deliver programmable 3.0–17 V output (±2.5%) for portable power rails in space-constrained devices.
For engineers reviewing the AP1609SL-13 datasheet, AP1609SL-13 pinout, AP1609SL-13 application, or AP1609SL-13 equivalent, key selection criteria include its PFM-to-PWM load-dependent mode switching, 1 µA shutdown current, SOP-8L thermal performance, and external inductor/diode topology requiring careful LX trace layout for EMI control.
Technical Context
The AP1609SL-13 implements a current-mode PWM/PFM hybrid controller with internal ramp generator and comparator-based duty-cycle regulation. Its 1.23 V precision reference feeds the FB pin, enabling output voltage setting via external resistor dividers across R1/R2.
It features dual ground paths-signal GND (pins 7–8) and power PGND (pin 4)-to isolate noise-sensitive analog circuitry from high di/dt switch-node transients. The CE pin provides logic-level enable/disable with 0.65×VCC high threshold and 0.20×VCC low threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion, dual-cell alkaline, or USB-powered inputs without pre-regulation. |
| Output Voltage Range | 3.0 V to 17 V (±2.5%) - programmable via FB resistor divider; enables direct generation of 5 V, 9 V, or 12 V rails. |
| Oscillator Frequency | 300 kHz ±20% - balances efficiency vs. external component size; allows use of compact 10 µH inductors. |
| Switching Current Limit | 2.4 A - defines maximum peak inductor current; sets practical output power ceiling with external components. |
| Quiescent Current | 80 µA (typ.) - determines light-load efficiency and battery runtime in always-on subsystems. |
| Shutdown Current | 1 µA (typ.) - enables ultra-low-power system sleep states with minimal battery drain. |
| RDS(on) | 100 mΩ (max.) - internal MOSFET conduction loss directly impacts thermal rise and full-load efficiency. |
Pinout & Package
SOP-8L (Small Outline Package, 8-lead, lead-free, green molding compound), 5.9 mm × 3.9 mm body, 1.27 mm pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE (Pin 1) | Chip Enable input | Active-high digital control; drives IC into 1 µA shutdown when pulled low below 0.20×VCC. |
| Vcc (Pin 2) | IC bias supply | Powers internal logic and gate driver; requires local 1 µF ceramic decoupling near pin. |
| FB (Pin 3) | Feedback sensing node | Compares divided output voltage against 1.23 V reference to regulate output; high-impedance input. |
| PGND (Pin 4) | Power ground return | Low-impedance return path for MOSFET source and external diode cathode; must be routed separately from signal GND. |
| LX (Pins 5 & 6) | Switch node | Connects to inductor and Schottky diode anode; high dv/dt node requiring minimized copper area to reduce EMI. |
| GND (Pins 7 & 8) | Signal ground reference | Reference for CE, FB, and internal comparators; connects to system ground plane but isolated from PGND at PCB level. |
Key Features
| Feature | Design Value |
|---|---|
| PWM/PFM dual-mode operation | Automatically transitions between fixed-frequency PWM (heavy load) and variable-frequency PFM (light load) to maintain >85% efficiency from 1 mA to 2 A output current. |
| Integrated 100 mΩ N-MOSFET | Eliminates need for external high-side switch; reduces BOM count and layout complexity while limiting thermal dissipation to package-rated 1200 mW. |
| Separate PGND and GND pins | Enables clean separation of power and signal return paths, reducing ground bounce and improving regulation accuracy under dynamic load steps. |
| 1.23 V ±2.5% feedback reference | Provides stable voltage setpoint for output programming; enables ±2.5% total output tolerance over line, load, and temperature with proper resistor selection. |
| 300 kHz oscillator with ±20% tolerance | Ensures predictable EMI profile and allows standard off-the-shelf inductors; frequency drift remains bounded across -20°C to +80°C ambient. |
Applications
| Portable Audio Power Supply | Cellular Phone Backlight Driver |
|---|---|
Use Scenario: Powers stereo headphone amplifier and DAC from single 3.7 V Li-ion cell in Bluetooth earbuds. IC Role / Device Role / Timing Role: Step-up regulator generating stable 5 V rail; regulates via FB loop with 10 kΩ/10 kΩ divider. Use Value: Delivers 91% typical efficiency at 100 mA load, extending playback time while maintaining low thermal signature in sealed enclosure. | Use Scenario: Supplies white LED strings in feature phone display backlight using 3.3 V system rail. IC Role / Device Role / Timing Role: Boost converter driving 3× LEDs in series at ~18 V; configured with HV application circuit using Zener clamp. Use Value: Achieves 88% efficiency at 20 mA LED current, with PFM mode minimizing quiescent draw during screen-off periods. |
| Palmtop System Rail Generator | Multi-Function Handheld Instrument |
Use Scenario: Generates 9 V analog front-end supply and 12 V LCD bias from 3.0–4.2 V battery in pocket-sized multimeter. IC Role / Device Role / Timing Role: Dual-rail boost controller using two independent AP1609SL-13 units; each configured for fixed output via FB resistors. Use Value: Maintains ±2.5% output accuracy across battery discharge curve, ensuring ADC reference stability and LCD contrast consistency. | Use Scenario: Provides programmable 3.3 V to 15 V auxiliary rail for sensor excitation and signal conditioning in field-deployable data logger. IC Role / Device Role / Timing Role: Adjustable boost converter controlled by microcontroller via CE pin; output voltage selected dynamically via resistor bank. Use Value: Enables single-hardware design supporting multiple sensor types (e.g., 5 V RTD, 12 V piezo) without board revision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PAM2423 | Higher 2.2 MHz switching frequency; lower 0.15 Ω RDS(on); no PFM mode; requires external compensation. | Better suited for ultra-compact designs needing smaller inductors; less optimal for battery life-critical light-load operation. | Select when board space is constrained and efficiency above 10 mA dominates design priority. |
| MT3608 | Fixed 1.2 MHz frequency; 0.08 Ω RDS(on); no CE pin; 2.5 A switch current; wider 2–24 V input range. | Lacks enable control and PFM optimization; simpler layout but higher light-load current (260 µA). | Choose for cost-sensitive, non-battery applications where always-on operation and minimal external parts are key. |
Compared with PAM2423 and MT3608, the AP1609SL-13 offers superior light-load efficiency via PFM mode and integrated enable functionality, making it preferable for portable battery-powered systems despite its discontinuation status and lower switching frequency.
Availability
AP1609SL-13 is available at Aetrix Electronics and suitable for portable audio systems, cellular phone backlight drivers, and palmtop power supplies requiring stable component supply and legacy design continuity.
Supply support for AP1609SL-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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with reliability-focused components.
The AP1609 belongs to Diodes' power management product line, designed specifically for compact, high-efficiency boost conversion in battery-powered portable electronics with stringent size and efficiency requirements.
FAQ
What is the recommended inductor value for AP1609SL-13 in a 5 V output application?
A 10 µH shielded power inductor rated for ≥2.5 A saturation current is recommended for 5 V output at 300 kHz operation. Typical values range from 4.7 µH to 22 µH; lower values reduce size but increase ripple and peak current stress on the internal MOSFET and external diode.
Can AP1609SL-13 drive multiple parallel LED strings?
No - the AP1609SL-13 is a constant-voltage boost converter, not a constant-current LED driver. To drive multiple LED strings, external current-setting resistors or dedicated LED driver ICs must be used downstream of its regulated output rail.
Why does AP1609SL-13 specify separate PGND and GND pins?
Separate PGND (Pin 4) and GND (Pins 7–8) pins prevent high di/dt switching currents from coupling noise into the feedback and enable circuitry. Routing PGND directly to the LX node's external diode and inductor minimizes ground loop area and improves regulation accuracy and EMI performance.
Is AP1609SL-13 RoHS compliant and halogen-free?
Yes - AP1609SL-13 uses lead-free terminations and green molding compound containing no bromine or antimony, meeting EU Directive 2002/95/EC (RoHS) and JEDEC JS709B halogen-free requirements as documented in Diodes' AP1609 datasheet DS43894 Rev. 1.
AP1609SL-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 2.4A (Switch)
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 80°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP1609SL-13 FAQ
1.How can I place an order for AP1609SL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1609SL-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 AP1609SL-13 reliable?
The price and inventory of AP1609SL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1609SL-13 is usually 5 days.
3.What payment methods are accepted for AP1609SL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1609SL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1609SL-13?
AP1609SL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1609SL-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 AP1609SL-13?
For technical support, including AP1609SL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1609SL-13 requirements.
6.How does Aetrix verify that AP1609SL-13 is sourced from the original manufacturer or authorized distributors?
All AP1609SL-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 AP1609SL-13 meets industry standards.
7.What is the process for return or replacement of AP1609SL-13?
All AP1609SL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1609SL-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 AP1609SL-13 part is unused and in its original packaging.
Return procedure for AP1609SL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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