My Inquiry
My Account
Diodes Incorporated AP3422DNTR-G1
- Part No.:
- AP3422DNTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
AP3422DNTR-G1.pdf
- Description:
- IC REG BUCK ADJ 800MA DL 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,780
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP3422DNTR-G1 from BCD Semiconductor is a dual-channel synchronous step-down DC-DC converter with two independent 1.1MHz fixed-frequency PWM controllers, each delivering up to 800mA output current from 2.5V–5.5V input, featuring integrated high-side PFET (0.44Ω) and low-side NFET (0.29Ω), 0.6V feedback reference, and 100% duty-cycle operation in dropout. It powers dual-rail subsystems in portable Li-ion battery-powered devices such as GPS modules and WiFi cards.
For engineers reviewing the AP3422DNTR-G1 datasheet, AP3422DNTR-G1 pinout, AP3422DNTR-G1 application, or AP3422DNTR-G1 equivalent, key selection criteria include per-channel enable control (EN1/EN2), dual feedback inputs (FB1/FB2), thermal shutdown (160°C), short-circuit protection, and DFN-3×3-10 package compatibility with standard 10µH inductors.
Technical Context
The AP3422 implements current-mode PWM control with slope compensation and internal soft-start (220µs), supporting independent regulation of two output rails via separate error amplifiers and 0.6V precision feedback references. Each channel features dedicated VIN, GND, SW, EN, and FB pins with matched thermal and electrical characteristics.
It integrates both power switches-PFET and NFET-with on-resistance values of 0.44Ω and 0.29Ω respectively-and includes under-voltage lockout (2.27V, 200mV hysteresis), over-temperature shutdown (160°C, 30°C hysteresis), and cycle-by-cycle current limiting (typ. 1.25A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (3.0–4.2V nominal) and USB-powered systems without external LDO pre-regulation. |
| Output Current per Channel | 800mA - sufficient for powering baseband processors, RF transceivers, or image sensors in portable media players. |
| Switching Frequency | 1.1MHz (±30%) - enables use of compact 10µH inductors and 10µF ceramic capacitors, reducing board area. |
| Feedback Reference Voltage | 0.600V ±2% - sets output voltage via external resistor divider; enables 0.9V–3.3V outputs with <1% regulation error. |
| Shutdown Current | <1µA total - dual-channel deep-sleep mode extends battery life in GPS/WiFi standby states. |
| Thermal Shutdown Threshold | 160°C - protects against sustained overload or poor PCB thermal design while allowing full 800mA load at 85°C ambient. |
| Duty Cycle Range | 0–100% - maintains regulation even when input drops near output voltage (e.g., 3.3V out from 3.4V Li-ion). |
Pinout & Package
AP3422DNTR-G1 is housed in a thermally enhanced DFN-3×3-10 package with exposed thermal pad (pin 1 marked), supporting ≤50°C/W junction-to-ambient thermal resistance and reflow-compatible lead-free (RoHS/G1) construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 / EN2 | Channel enable control | Logic-high (>1.5V) activates respective converter; logic-low (<0.6V) disables with <0.1µA shutdown current. |
| FB1 / FB2 | Feedback input | Connects to resistor divider midpoint; regulates output to 0.6V reference - sets VOUT = 0.6V × (1 + R1/R2). |
| VIN1 / VIN2 | Input supply rail | Accepts 2.5–5.5V; requires ≥10µF ceramic bypass capacitor per input to suppress switching noise and ensure stability. |
| SW1 / SW2 | Power switch node | Drain connection of internal PFET/NFET pair; connects directly to inductor; carries high di/dt switching current. |
| GND1 / GND2 | Power ground | Separate ground pins per channel minimize cross-talk and improve PSRR between regulated outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PFET/NFET switches | Eliminates need for external Schottky diode and reduces component count, PCB area, and conduction losses. |
| 100% duty-cycle capability | Maintains regulation during battery voltage sag (e.g., 3.3V output from 3.4V input), extending usable battery range. |
| Independent enable and feedback | Enables staggered startup, dynamic rail sequencing, and fault-isolated shutdown per channel in multi-rail systems. |
| Built-in thermal shutdown | Auto-recovers after cooling (30°C hysteresis), preventing permanent damage during transient overloads or poor heatsinking. |
| Current-mode control with slope compensation | Ensures stable operation across wide input/output voltage and load ranges without external compensation components. |
Applications
| GPS Module Power Supply | WiFi Card Dual-Rail Supply |
|---|---|
Use Scenario: Powers GPS baseband IC and RF front-end from single Li-ion cell with tight ripple and fast load transient response. IC Role / Device Role / Timing Role: Dual-channel buck regulator providing 1.8V for digital core and 3.3V for RF section, independently enabled and trimmed. Use Value: 95% peak efficiency and 220µs soft-start prevent brownout during cold start; 1.1MHz switching avoids interference with GPS L1 band (1.575GHz). | Use Scenario: Supplies 1.2V logic and 3.3V I/O rails for IEEE 802.11b/g/n WiFi SoC in ultra-thin tablets and dongles. IC Role / Device Role / Timing Role: Synchronous buck converter delivering regulated, low-noise power with independent EN control for power-state coordination. Use Value: Dual GND pins reduce ground bounce; 800mA per channel supports burst transmit current without voltage droop. |
| Portable Media Player Core Logic | Digital Camera Sensor & ISP Rails |
Use Scenario: Powers ARM-based application processor and audio codec in handheld media players with battery-life optimization. IC Role / Device Role / Timing Role: Dual-step-down regulator generating 1.2V CPU core and 1.8V memory voltage, sequenced via EN1/EN2 timing. Use Value: <1µA shutdown current preserves battery charge during sleep; 0.6V feedback enables precise low-voltage regulation critical for sub-1.2V cores. | Use Scenario: Supplies image sensor analog bias (2.8V) and ISP digital core (1.2V) in compact digital still/video cameras. IC Role / Device Role / Timing Role: Dual-output DC-DC converter with independent feedback loops ensuring stable voltage under varying pixel readout loads. Use Value: 100% duty cycle sustains 2.8V output as battery discharges below 3.0V; thermal shutdown prevents overheating during continuous video capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62400DRVR | Single 3MHz converter with dual-output configuration via external resistors; no independent EN or FB per channel. | Limited to fixed-ratio dual outputs; unsuitable for asymmetric rail requirements like 1.2V + 3.3V. | Select when cost-sensitive designs require only one adjustable output and a fixed secondary rail. |
| RT8070ZSP | Two independent 1.5MHz converters, but with 600mA max per channel and no 100% duty-cycle mode. | Inadequate for 800mA camera sensor bursts or GPS cold-start surges; higher dropout voltage limits battery runtime. | Prefer for space-constrained apps needing higher frequency, where 600mA load ceiling is acceptable. |
Compared with TPS62400DRVR and RT8070ZSP, AP3422DNTR-G1 uniquely delivers independent 800mA channels with true 100% duty-cycle operation and dual FB/EN control-critical for asymmetric, battery-critical portable systems requiring maximum runtime and rail flexibility.
Availability
AP3422DNTR-G1 is available at Aetrix Electronics and suitable for GPS modules, WiFi cards, and portable media players requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for AP3422DNTR-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 Shanghai-based fabless analog IC designer specializing in high-efficiency power management, motor drivers, and mixed-signal solutions for consumer, industrial, and automotive markets.
The AP3422 belongs to BCD's AP-series dual synchronous buck converters, engineered specifically for space- and battery-constrained portable electronics requiring independent, high-current, low-voltage rails from single-cell Li-ion sources.
FAQ
What is the minimum input voltage required for AP3422DNTR-G1 to regulate both outputs?
The AP3422DNTR-G1 maintains regulation down to 2.5V input across its full operating temperature range (-40°C to +85°C). Its under-voltage lockout releases at 2.27V (with 200mV hysteresis), and 100% duty-cycle operation allows continued regulation even when input voltage approaches the output voltage level-critical for maintaining system uptime as Li-ion batteries discharge.
Can AP3422DNTR-G1 be used with ceramic output capacitors only?
Yes. The AP3422DNTR-G1 is optimized for ceramic output capacitors (≥10µF per channel) and does not require ESR-based damping. Its current-mode control architecture ensures stability with low-ESR ceramics, eliminating the need for tantalum or aluminum electrolytic capacitors and reducing solution size and cost.
How are the two channels synchronized, and is phase interleaving supported?
The AP3422DNTR-G1 operates each channel with an independent oscillator; no internal synchronization or phase interleaving is implemented. Channels switch asynchronously, which simplifies layout but may increase input ripple. For lower input ripple, external synchronization is not supported-designers must manage input capacitance accordingly (≥10µF ceramic per VIN pin).
Does AP3422DNTR-G1 support output voltage adjustment below 0.6V?
No. The internal feedback reference is fixed at 0.600V ±2%, and the device is not designed for sub-0.6V outputs. Attempting to set VOUT below 0.6V using external resistor dividers violates the specified operating conditions and risks regulation failure or instability due to insufficient feedback headroom.
AP3422DNTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 800mA
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
AP3422DNTR-G1 FAQ
1.How can I place an order for AP3422DNTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3422DNTR-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 AP3422DNTR-G1 reliable?
The price and inventory of AP3422DNTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3422DNTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3422DNTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3422DNTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3422DNTR-G1?
AP3422DNTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3422DNTR-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 AP3422DNTR-G1?
For technical support, including AP3422DNTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3422DNTR-G1 requirements.
6.How does Aetrix verify that AP3422DNTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3422DNTR-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 AP3422DNTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3422DNTR-G1?
All AP3422DNTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3422DNTR-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 AP3422DNTR-G1 part is unused and in its original packaging.
Return procedure for AP3422DNTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP3422DNTR-G1 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…
