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Diodes Incorporated AP3602AKTR-E1
- Part No.:
- AP3602AKTR-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
AP3602AKTR-E1.pdf
- Description:
- IC LED DRVR RGLTR 100MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,946
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Product details
Overview
AP3602AKTR-E1 from BCD Semiconductor is a regulated 5V-output charge pump DC/DC converter in SOT-23-6 package, delivering 100mA continuous or 250mA peak (100ms) output current from 2.7–5.0V input. It features 4% output voltage precision, 1.2MHz switching frequency, and active-low shutdown control-designed specifically for white LED backlight and flash driver circuits in space-constrained portable devices.
For engineers reviewing the AP3602AKTR-E1 datasheet, AP3602AKTR-E1 pinout, AP3602AKTR-E1 application, or AP3602AKTR-E1 equivalent, key selection criteria include regulated 5V output capability at ≥100mA under 3.0V+ input, ultra-low 13μA quiescent current, thermal protection, and minimal external component count (only three ceramic capacitors required).
Technical Context
The AP3602AKTR-E1 implements a two-phase switched-capacitor charge pump with internal 1.25V reference and comparator-based regulation. Output voltage is stabilized via an internal resistor divider network feeding a control comparator that enables/disables switching based on feedback.
It operates in pulse-skipping idle mode when load demand drops, reducing quiescent current to 13μA; full shutdown draws <1μA. Thermal protection triggers at ~160°C junction temperature with 10°C hysteresis, enabling safe short-circuit operation without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - tightly regulated for stable LED biasing across input and load variation |
| Continuous Output Current | 100mA @ VIN ≥3.0V - sufficient to drive 4× white LEDs (VF=3.2V) in series with 120Ω current-limiting resistors |
| Peak Output Current | 250mA for 100ms - supports camera flash burst mode without output collapse |
| Quiescent Current | 13μA typical - minimizes battery drain during display backlight standby |
| Switching Frequency | 1.2MHz - enables use of small 1μF flying capacitor and low-ESR ceramic output capacitors |
| Shutdown Supply Current | <1μA - ensures near-zero power loss when disabled in battery-powered sleep states |
| Operating Temperature | −40°C to +85°C - qualified for consumer handheld and mobile phone environments |
Pinout & Package
SOT-23-6 package (K-type), 2.95mm × 2.82mm footprint, 1.45mm max height, with gull-wing leads and Pin 1 marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VOUT | Regulated output node | Bypassed with 1–22μF low-ESR ceramic capacitor placed adjacent to pin for ripple suppression and transient response |
| 2 GND | Power ground reference | Must connect to solid ground plane; CIN and COUT capacitors placed nearest this pin for lowest loop inductance |
| 3 SHDN | Active-low enable/disable control | Logic-high (≥1.4V) enables operation; logic-low (≤0.3V) disables all internal circuitry; must not float |
| 4 C− | Flying capacitor negative terminal | Connects to low-side of 1μF flying capacitor; placement proximity critical for charge transfer efficiency |
| 5 VIN | Input supply (2.7–5.0V) | Bypassed with 1–22μF ceramic capacitor; supplies energy to charge pump and internal bias circuits |
| 6 C+ | Flying capacitor positive terminal | Connects to high-side of 1μF flying capacitor; forms charge-transfer path during phase reversal |
Key Features
| Feature | Design Value |
|---|---|
| Regulation precision | ±4% output voltage tolerance - ensures consistent LED brightness across battery discharge and temperature |
| Thermal protection | Auto-cycling shutdown at ~160°C junction - prevents damage during sustained short-circuit or overload |
| Low-temperature coefficient | Normalized output voltage drift ≤±1% from −50°C to +100°C - maintains stable LED drive over environmental extremes |
| Minimal external components | Only three ceramic capacitors required (CIN, COUT, CFLY) - reduces PCB area and BOM cost vs. inductor-based boosters |
| Fast turn-on time | 200μs VOUT rise time (no load) - enables rapid backlight activation in UI wake-up events |
Applications
| Mobile Phone Backlight Driver | Camera Flash LED Driver |
|---|---|
Use Scenario: Driving 4-series white LEDs (VF=3.2V) for main LCD backlight in smartphones operating from single-cell Li-ion (2.7–4.2V). IC Role / Device Role / Timing Role: Regulated 5V charge pump providing constant-current bias through external resistors; replaces inductor-based boost converters to reduce EMI and board area. Use Value: Enables thin form factor with no magnetic components while maintaining >92% efficiency at 50mA load and 2.7V input. |
Use Scenario: Delivering brief 250mA peak current pulses to 4-series white LEDs for smartphone camera flash illumination. IC Role / Device Role / Timing Role: Charge pump configured for burst-mode operation; internal thermal protection allows safe 100ms flash duration without derating. Use Value: Eliminates need for large electrolytic storage capacitors by sourcing peak current directly from regulated 5V rail. |
| MP3/MP4 Player Display Backlight | Handheld Barcode Scanner LED Illumination |
Use Scenario: Powering monochrome OLED or TFT backlight in portable media players with tight battery life constraints. IC Role / Device Role / Timing Role: Low-quiescent-current (13μA) regulated voltage source activated only during display-on intervals via SHDN control. Use Value: Extends playback time by minimizing standby current while ensuring fast (<200μs) backlight ramp-up on button press. |
Use Scenario: Supplying consistent 100mA to high-brightness red/green LEDs used for barcode illumination in rugged handheld scanners. IC Role / Device Role / Timing Role: Stable 5V rail generator tolerant of wide input (2.7–5.0V) from alkaline or rechargeable battery packs. Use Value: Maintains uniform LED intensity across battery discharge curve, improving scan reliability in low-power states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3602BKTR-E1 | 4.5V nominal output (±4%), 2.7–4.5V input range, 83% efficiency at 2.7V/50mA | Optimized for lower-voltage systems (e.g., 3.3V rails); reduced output headroom limits LED string count | Select when driving fewer LEDs or using lower-VF emitters where 4.5V suffices |
| MAX687ESA+ | 5.0V output, but requires external resistor for regulation; 100mA max, 1.1MHz, SO-8 package | Larger footprint and higher BOM count (external Rset + bypass caps); no integrated thermal protection | Choose only if legacy MAXIM design reuse is required; otherwise AP3602AKTR-E1 offers superior integration and protection |
Compared with AP3602BKTR-E1, the AP3602AKTR-E1 provides higher output voltage and efficiency for 5V LED strings; versus MAX687ESA+, it delivers smaller size, lower quiescent current, and built-in thermal safety-making it optimal for new compact, battery-sensitive designs.
Availability
AP3602AKTR-E1 is available at Aetrix Electronics and suitable for mobile phone backlight driver, camera flash LED driver, and handheld device power management requiring stable component supply, RoHS compliance, and tape-and-reel delivery for automated assembly.
Supply support for AP3602AKTR-E1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog IC designer and foundry partner specializing in high-efficiency power management, LED drivers, and mixed-signal solutions for portable electronics.
The AP3602A/B series was developed to replace inductor-based boost converters in space-constrained battery-powered devices, emphasizing ultra-low quiescent current, thermal resilience, and minimal external component count.
FAQ
What is the minimum input voltage required to sustain 100mA output current?
The AP3602AKTR-E1 requires VIN ≥3.0V to deliver 100mA continuous output current. Below 3.0V (down to 2.7V), maximum continuous output drops to 50mA per datasheet specifications. This threshold is defined by internal regulation loop headroom and charge pump efficiency limits-not absolute minimum operating voltage.
Can the AP3602AKTR-E1 drive more than four white LEDs in series?
No. With VF=3.2V per LED, four-series LEDs require ≥12.8V forward drop, exceeding the AP3602AKTR-E1's 5.0V output. It is designed for parallel or series-parallel LED configurations-e.g., four LEDs in series with current-limiting resistors powered from 5V, or two parallel strings of two LEDs each.
Is the SHDN pin compatible with standard CMOS logic levels?
Yes. The SHDN pin accepts standard CMOS logic: VIH ≥1.4V (guaranteed enable) and VIL ≤0.3V (guaranteed disable) across full input voltage range (2.7–5.0V). Input leakage is ±1μA, allowing direct interface with microcontroller GPIO without level-shifting or pull-up/down resistors.
How does the AP3602AKTR-E1 handle output short-circuit conditions?
Under output short, the AP3602AKTR-E1 limits current to ~300mA (typical) and enters thermal shutdown cycling at ~160°C junction temperature. It auto-recovers when temperature falls below ~150°C, preventing permanent damage. No external current-sense or foldback circuitry is needed-protection is fully integrated.
AP3602AKTR-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5V
- Voltage - Output:
- 4.8V ~ 5.2V
- Current - Output / Channel:
- 100mA
- Frequency:
- 1.2MHz
- Dimming:
- -
- Applications:
- Backlight, Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AP3602AKTR-E1 FAQ
1.How can I place an order for AP3602AKTR-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3602AKTR-E1 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 AP3602AKTR-E1 reliable?
The price and inventory of AP3602AKTR-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3602AKTR-E1 is usually 5 days.
3.What payment methods are accepted for AP3602AKTR-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3602AKTR-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3602AKTR-E1?
AP3602AKTR-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3602AKTR-E1 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 AP3602AKTR-E1?
For technical support, including AP3602AKTR-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3602AKTR-E1 requirements.
6.How does Aetrix verify that AP3602AKTR-E1 is sourced from the original manufacturer or authorized distributors?
All AP3602AKTR-E1 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 AP3602AKTR-E1 meets industry standards.
7.What is the process for return or replacement of AP3602AKTR-E1?
All AP3602AKTR-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3602AKTR-E1, 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 AP3602AKTR-E1 part is unused and in its original packaging.
Return procedure for AP3602AKTR-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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