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onsemi FAN5602MU33X
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- Part No.:
- FAN5602MU33X
- Manufacturer:
- onsemi
- Package:
- 8-VSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
FAN5602MU33X.pdf
- Description:
- IC REG CHG PUMP 3.3V 200MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,239
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Product details
Overview
FAN5602MU33X from Fairchild Semiconductor is a universal switched-capacitor DC/DC charge pump converter supporting both step-up and step-down operation with fixed 3.3V output. It delivers up to 200mA at VIN = 3.6V, operates across 2.7V–5.5V input, achieves ±3% output voltage accuracy, and features adaptive fractional switching (1:3, 1:2, 2:3, 1:1, etc.) for optimal efficiency in portable power management applications such as cell phone core supplies.
For engineers reviewing the FAN5602MU33X datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-ready availability details - all specific to the 3.3V-output, 3×3mm 8-lead MLP variant.
Technical Context
The FAN5602MU33X implements resistance-modulated linear regulation loop control to minimize switching noise and enable LDO-like operation in 1:1 mode when VIN ≈ VOUT. Its internal logic continuously monitors VIN/VOUT ratio and automatically selects among seven switch configurations-including 1:1 (LDO), 2:3 (step-up), 1:2 (step-up), and 3:2 (step-down)-to maximize efficiency across wide input/output combinations.
Under light load (<10mA), it transitions from constant-frequency (1MHz) PWM to pulse-skipping (PFM) mode to reduce quiescent current to <1µA in shutdown. Soft-start limits inrush current during power-on, while short-circuit protection disables power transistors and engages a current-limited pass path when VOUT drops below 150mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% - enables direct replacement of LDOs in 3.3V rail generation without external feedback resistors. |
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion (3.2–4.2V), NiMH, or dual-cell alkaline inputs without external regulators. |
| Max Output Current | 200mA at VIN = 3.6V - sufficient for low-power processors, DSPs, and RF ICs in handheld devices. |
| Peak Efficiency | 92% - achieved in 2:1 or 3:2 modes, reducing thermal load and extending battery runtime in portable systems. |
| Operating Frequency | 1MHz (±30%) - allows use of small 1µF ceramic bucket capacitors and minimizes EMI filtering requirements. |
| Shutdown Current | <1µA - preserves battery life during system sleep modes without requiring external load switches. |
| Voltage Ripple | 10mVpp at 200mA load - meets noise-sensitive analog and RF supply requirements without additional LC filtering. |
Pinout & Package
Package: 3×3mm 8-lead molded leadless package (MLP), RoHS-compliant, 0.8mm profile, thermal pad exposed on bottom.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.7–5.5V supply; connects to 10µF input capacitor and internal UVLO (1.7V threshold). |
| C2+ | Flying capacitor terminal | Positive node for second 1µF bucket capacitor; participates in 2:3, 1:2, and 1:3 charge-pump phases. |
| C2− | Flying capacitor terminal | Negative node for second 1µF bucket capacitor; referenced to GND or VIN depending on mode. |
| GND | Ground reference | Primary return path for all internal circuits and external capacitors; must be low-impedance PCB plane. |
| C1− | Flying capacitor terminal | Negative node for first 1µF bucket capacitor; shared with C2− in some modes (e.g., 1:1 LDO). |
| VOUT | Regulated output | Delivers fixed 3.3V; requires 10µF low-ESR ceramic capacitor; short-circuit protected to 150mV threshold. |
| C1+ | Flying capacitor terminal | Positive node for first 1µF bucket capacitor; forms charge-transfer path with C1− and C2 terminals. |
| ENABLE | Logic control input | Active-high (VIH ≥ 1.5V); pulls supply current to <1µA when low; must not be left floating. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive switch topology | Automatically selects among 1:1, 2:3, 1:2, 1:3, 3:2, 2:1, 3:1 configurations based on VIN/VOUT ratio - eliminates manual mode selection and ensures peak efficiency across operating conditions. |
| Hybrid regulation architecture | Combines linear regulation loop (for low-noise 1:1 LDO mode) and PFM-controlled charge pumping (for high-efficiency light-load operation) - reduces output ripple to microvolt range and extends battery life. |
| No-inductor design | Uses only three external ceramic capacitors (two 1µF flying + one 10µF output) - eliminates magnetic EMI, simplifies layout, and reduces BOM cost vs. inductive DC/DC converters. |
| Integrated protection | Includes thermal shutdown (145°C trip, 15°C hysteresis), short-circuit current limiting, and soft-start (500µs ramp) - prevents damage during fault conditions and avoids input supply sag at startup. |
| Low-noise constant-frequency operation | Maintains 1MHz switching under loads >10mA - enables predictable EMI filtering and avoids interference with sensitive RF or audio circuits. |
Applications
| Cell Phone Core Supply | Handheld Computer DSP Rail |
|---|---|
Use Scenario: Powering ARM-based application processors and memory interfaces in compact smartphones with single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary 3.3V regulated supply delivering up to 200mA with tight voltage accuracy and low ripple for digital logic stability. Use Value: Adaptive 1:1 LDO mode maintains microvolt-level ripple during CPU burst loads, while 2:3/1:2 modes extend usable battery voltage down to 2.7V without brownout. |
Use Scenario: Providing clean, efficient 3.3V power to low-power DSPs and ADCs in ruggedized handheld computers used in field data collection. IC Role / Device Role / Timing Role: High-efficiency DC/DC converter enabling extended runtime from AA/AAA battery packs while meeting strict EMI limits. Use Value: 92% peak efficiency and <1µA shutdown current directly increase operational time between battery swaps by >15% versus standard LDO solutions. |
| Portable RF Transceiver Bias | Low-Voltage DC Bus Regulation |
Use Scenario: Supplying stable 3.3V bias to 2.4GHz Bluetooth/Wi-Fi transceivers in wearables where board space and heat dissipation are constrained. IC Role / Device Role / Timing Role: Noise-suppressed power source minimizing phase noise injection into RF signal paths via low-ripple 1:1 mode operation. Use Value: 10mVpp output ripple at full load avoids degradation of receiver sensitivity and adjacent-channel rejection in narrowband RF systems. |
Use Scenario: Regulating distributed 3.3V bus in multi-rail embedded systems powered from variable sources like USB PD or energy-harvesting harvesters. IC Role / Device Role / Timing Role: Universal voltage translator maintaining stable output despite input fluctuations from 2.7V to 5.5V - eliminating need for multiple discrete regulators. Use Value: Single-device support for both step-up (e.g., 2.8V → 3.3V) and step-down (e.g., 5.0V → 3.3V) eliminates BOM duplication and simplifies inventory management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8815AETA+T | Fixed 3.3V output, 250mA max, 1.2MHz switching, requires external feedback for adjustable versions; no 1:1 LDO mode. | Lacks true LDO-equivalent operation - higher light-load ripple and no microvolt-range regulation at VIN ≈ VOUT. | Prefer FAN5602MU33X when ultra-low-noise 3.3V supply near input voltage is required; choose MAX8815AETA+T for higher current headroom and tighter factory-trimmed accuracy (±1.5%). |
| TLC7660CPW | CMOS voltage converter (inverting only), ±3.3V output, 20mA max, no regulation, no shutdown, no protection. | Unregulated charge pump - unsuitable for powering logic rails; limited to simple level-shifting or bias generation. | FAN5602MU33X is functionally distinct: it is a regulated, protected, non-inverting universal converter; TLC7660CPW is a legacy unregulated inverter - not a drop-in or functional substitute. |
Compared with MAX8815AETA+T and TLC7660CPW, the FAN5602MU33X uniquely combines adaptive topology, integrated LDO-mode operation, and comprehensive protection - making it the only option among the three capable of delivering regulated 3.3V with microvolt ripple, 200mA capability, and full fault resilience in space-constrained portable designs.
Availability
FAN5602MU33X is available at Aetrix Electronics and suitable for cell phone core supply, handheld computer DSP rail, and portable RF transceiver bias applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for FAN5602MU33X 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
Fairchild Semiconductor was a U.S.-based analog and power IC manufacturer acquired by ON Semiconductor in 2016; its legacy portfolio remains widely deployed in portable and industrial power systems.
The FAN5602 series was designed specifically for universal, inductorless DC/DC conversion in battery-powered handheld electronics - prioritizing efficiency across wide VIN/VOUT ratios, low EMI, and minimal external component count.
FAQ
What is the exact output voltage tolerance of the FAN5602MU33X?
The FAN5602MU33X delivers a fixed 3.3V output with ±3% accuracy over temperature (−40°C to +85°C), input voltage (2.7V–5.5V), and load (0–100mA). This specification is guaranteed per the datasheet's DC Electrical Characteristics table and applies regardless of operating mode (1:1, 2:3, etc.). The FAN5602MU33X does not require external feedback components to maintain this tolerance.
Does the FAN5602MU33X support true LDO-like operation?
Yes - the FAN5602MU33X enters 1:1 mode when VIN is within ~10% of 3.3V (e.g., 3.0V–3.6V), disabling the oscillator and using internal pass transistors controlled by the linear regulation loop. In this state, the FAN5602MU33X behaves electrically like an LDO: output ripple drops to microvolt range, no switching noise is generated, and efficiency remains high due to zero dynamic loss.
What external capacitors are mandatory for stable operation of the FAN5602MU33X?
The FAN5602MU33X requires exactly three external ceramic capacitors: two 1µF low-ESR flying capacitors (C1 and C2) connected to pins C1+/C1− and C2+/C2−, and one 10µF low-ESR output capacitor (COUT) connected to VOUT and GND. Input capacitance (CIN) is recommended but not mandatory if the source has low impedance. All capacitors must be placed within 3mm of their respective pins.
How does the FAN5602MU33X handle short-circuit conditions?
When VOUT falls below 150mV, the FAN5602MU33X immediately disables all main power transistors and activates a dedicated small-current pass transistor between VIN and VOUT. This limits fault current to approximately 200mA while allowing the output to recover once the short is removed. After recovery, the FAN5602MU33X re-enters soft-start to prevent inrush.
Is the FAN5602MU33X pin-compatible with other variants in the FAN5602 family?
Yes - all FAN5602 variants (including FAN5602MP33X, FAN5602MP45X, FAN5602MP5X, and FAN5602MU33X) share identical 3×3mm 8-lead MLP pinout and footprint. The only difference is factory-trimmed output voltage; no PCB redesign is needed when substituting between 3.3V, 4.5V, or 5.0V versions.
FAN5602MU33X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-VSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
FAN5602MU33X FAQ
1.How can I place an order for FAN5602MU33X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN5602MU33X 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 FAN5602MU33X reliable?
The price and inventory of FAN5602MU33X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN5602MU33X is usually 5 days.
3.What payment methods are accepted for FAN5602MU33X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN5602MU33X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN5602MU33X?
FAN5602MU33X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN5602MU33X 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 FAN5602MU33X?
For technical support, including FAN5602MU33X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN5602MU33X requirements.
6.How does Aetrix verify that FAN5602MU33X is sourced from the original manufacturer or authorized distributors?
All FAN5602MU33X 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 FAN5602MU33X meets industry standards.
7.What is the process for return or replacement of FAN5602MU33X?
All FAN5602MU33X units undergo pre-shipment inspection (PSI). If there is an issue with FAN5602MU33X, 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 FAN5602MU33X part is unused and in its original packaging.
Return procedure for FAN5602MU33X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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