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Diodes Incorporated AP3602BKTR-G1
- Part No.:
- AP3602BKTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
AP3602BKTR-G1.pdf
- Description:
- IC LED DRVR RGLTR 100MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,045
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Product details
Overview
AP3602BKTR-G1 from BCD Semiconductor is a regulated charge pump DC/DC converter optimized for 4.5V output, delivering 100mA continuous or 250mA peak (100ms) from 2.7–4.5V input. It integrates internal regulation, over-temperature protection, and shutdown control in SOT-23-6, serving as a flash LED driver in battery-powered mobile cameras.
For engineers reviewing the AP3602BKTR-G1 datasheet, AP3602BKTR-G1 pinout, AP3602BKTR-G1 application, or AP3602BKTR-G1 equivalent, key selection criteria include output voltage precision (±4%), low quiescent current (13μA), shutdown leakage (<1μA), and thermal protection behavior under sustained short-circuit conditions.
Technical Context
The AP3602BKTR-G1 uses a fixed-frequency (1.2 MHz), two-phase switched-capacitor topology with internal resistor-divider feedback to regulate VOUT at 4.5V ±4%. Its control loop enables pulse-skipping idle mode below load threshold, reducing IQ to 13μA while maintaining regulation via COUT discharge.
Thermal protection activates at ~160°C junction temperature with ~10°C hysteresis, cycling the charge pump on/off during persistent output short circuits. The SHDN pin is active-low with VIH ≥1.4V and VIL ≤0.3V, requiring explicit logic-level drive to prevent floating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.5V ±4% - tightly regulated for consistent white LED forward bias across input and load variation |
| Continuous Output Current | 100mA @ VIN ≥3.0V - supports 4×3.2V LEDs in series with margin at typical battery voltages |
| Peak Output Current | 250mA for 100ms - enables high-intensity camera flash pulses without thermal shutdown |
| Quiescent Current | 13μA typical - minimizes standby drain in always-on portable systems |
| Shutdown Supply Current | <1μA - ensures negligible battery leakage when disabled |
| Oscillation Frequency | 1.2MHz fixed - allows use of small 1μF flying capacitor and reduces EMI filtering burden |
| Operating Temperature | −40°C to +85°C - qualified for consumer handheld and industrial portable environments |
Pinout & Package
AP3602BKTR-G1 is housed in a RoHS-compliant, green SOT-23-6 package (3.02 × 2.82 × 1.45 mm), optimized for space-constrained PCB layouts in mobile modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VOUT | Regulated output node | Bypassed with 1–22μF ceramic capacitor; supplies flash LED string; voltage accuracy defined by internal 4.5V reference |
| 2 GND | Power ground reference | Must connect to solid ground plane; location critical for minimizing noise coupling into CIN/COUT/CFLY paths |
| 3 SHDN | Active-low enable/disable control | Pulled high internally; requires external pull-up or MCU GPIO; floating state prohibited per datasheet |
| 4 C− | Flying capacitor negative terminal | Connects to 1μF ceramic CFLY; layout proximity to C+ and GND essential for charge transfer efficiency |
| 5 VIN | Input supply rail | Accepts 2.7–4.5V; bypassed with 1–22μF ceramic capacitor; powers internal oscillator and control circuitry |
| 6 C+ | Flying capacitor positive terminal | Completes charge pump switching path; paired with C− to form voltage-doubling flying cap network |
Key Features
| Feature | Design Value |
|---|---|
| Regulation precision | ±4% output voltage tolerance - ensures stable LED brightness across battery discharge and temperature drift |
| Low-power idle mode | 13μA quiescent current with pulse-skipping - extends battery life in intermittent-use flash applications |
| Fast turn-on time | 0.2ms VOUT rise (VIN=3V, no load) - meets sub-millisecond flash activation timing requirements |
| Short-circuit robustness | 300mA typical short-circuit current with thermal cycling - prevents latch-up during accidental LED wire shorts |
| Minimal external components | Only three capacitors required (CIN, COUT, CFLY) - reduces BOM count and board area vs. inductor-based boost converters |
Applications
| Mobile Phone Flash Driver | Portable Camera Module |
|---|---|
|
Use Scenario: High-current, short-duration illumination for smartphone rear/front camera capture in low-light conditions. IC Role / Device Role / Timing Role: Regulated charge pump providing 4.5V/100mA to drive 4-series white LEDs with precise current control via external resistors. Use Value: Enables consistent flash intensity across 2.7–4.2V Li-ion battery range without requiring inductor-based DC/DC, saving PCB space and cost. |
Use Scenario: Compact standalone camera module used in action cams or IoT vision sensors requiring brief high-brightness illumination. IC Role / Device Role / Timing Role: Primary voltage booster and current source for flash LED array; controlled via microcontroller GPIO on SHDN pin. Use Value: Delivers 250mA peak for 100ms flash bursts while drawing only 13μA between shots-critical for battery longevity in infrequent-use devices. |
| MP3/MP4 Player Backlight | Handheld Barcode Scanner |
|
Use Scenario: White LED backlight for small OLED/LCD displays in audio players with tight power budgets. IC Role / Device Role / Timing Role: Fixed 4.5V regulated output powering 2–3 series LEDs; enabled only during display-on periods via SHDN. Use Value: Achieves >83% efficiency at 50mA load and 2.7V input-maximizing runtime versus linear regulators or less-efficient boost topologies. |
Use Scenario: Illumination for 1D/2D barcode reading in rugged handheld scanners powered by rechargeable cells. IC Role / Device Role / Timing Role: Flash driver supplying 100mA to high-luminance LED array synchronized with image capture trigger signal. Use Value: Integrated over-temperature protection prevents thermal derating during repeated scan cycles in warm ambient environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3602AKTR-G1 | 5.0V output (vs. 4.5V); wider input range (2.7–5.0V) | Better suited for higher-VF LED strings or systems with 5V rails | Select when driving ≥5V total LED forward voltage or operating above 4.5V input |
| MAX682ESA+ | 4.5V output, but requires external feedback resistors; 100mA max, no peak current spec | Lacks integrated regulation and thermal protection; needs additional components | Choose only if design flexibility outweighs integration benefits and reliability requirements |
Compared with AP3602AKTR-G1, the AP3602BKTR-G1 trades 0.5V output headroom for tighter input compatibility with 3.7V nominal Li-ion batteries; versus MAX682ESA+, it delivers plug-and-play regulation and fault resilience without external compensation.
Availability
AP3602BKTR-G1 is available at Aetrix Electronics and suitable for mobile phone flash drivers, portable camera modules, MP3/MP4 player backlights, and handheld barcode scanners requiring stable component supply and green packaging compliance.
Supply support for AP3602BKTR-G1 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 China-based fabless analog IC designer specializing in power management, LED drivers, and mixed-signal solutions for portable and consumer electronics.
The AP3602 series belongs to BCD's regulated charge pump product line, engineered specifically for low-noise, capacitor-only voltage boosting in space- and power-constrained battery-operated imaging and display subsystems.
FAQ
What is the maximum allowable input voltage for AP3602BKTR-G1?
The absolute maximum input voltage is 7V, but the recommended operating range is 2.7V to 4.5V. Exceeding 4.5V may cause overvoltage stress on internal circuitry and degrade long-term reliability, even if within absolute ratings. Operation above 4.5V voids guaranteed performance per datasheet specifications.
Can AP3602BKTR-G1 drive more than four white LEDs in series?
No. With a regulated 4.5V output and typical white LED VF of 3.2V, the device supports up to one string of four 3.2V LEDs (12.8V total VF) only when used in a voltage-doubling configuration external to the IC. Internally, it provides fixed 4.5V-sufficient for one 3.2V LED or two in series with current-limiting resistors, not four.
How does thermal protection behave during continuous short-circuit conditions?
When output is shorted, junction temperature rises rapidly due to ~1.8W instantaneous dissipation. At ~160°C, thermal shutdown disables switching; after cooling to ~150°C (10°C hysteresis), the device automatically resumes operation. This on-off cycling continues until the short is removed, preventing permanent damage without latching.
Is the SHDN pin compatible with 1.8V logic microcontrollers?
Yes. The SHDN pin has VIH ≤1.4V (min) and VIL ≥0.3V (max) across temperature and supply voltage, making it compatible with standard 1.8V CMOS outputs. A 1.8V-high signal exceeds VIH, ensuring reliable enablement; a 0V-low signal falls below VIL, guaranteeing disablement.
AP3602BKTR-G1 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):
- 4.5V
- 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
AP3602BKTR-G1 FAQ
1.How can I place an order for AP3602BKTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3602BKTR-G1 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 AP3602BKTR-G1 reliable?
The price and inventory of AP3602BKTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3602BKTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3602BKTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3602BKTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3602BKTR-G1?
AP3602BKTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3602BKTR-G1 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 AP3602BKTR-G1?
For technical support, including AP3602BKTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3602BKTR-G1 requirements.
6.How does Aetrix verify that AP3602BKTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3602BKTR-G1 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 AP3602BKTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3602BKTR-G1?
All AP3602BKTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3602BKTR-G1, 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 AP3602BKTR-G1 part is unused and in its original packaging.
Return procedure for AP3602BKTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP3602BKTR-G1 Tags
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