AP3429AKTR-G1
Synchronous Buck ConverterThe AP3429AKTR-G1 is a synchronous buck converter from Diodes Incorporated. View the full AP3429AKTR-G1 datasheet below including key specifications, pinout, absolute maximum ratings.
Manufacturer
Diodes Incorporated
Category
Synchronous Buck Converter
Package
TSOT25
Key Specifications
| Parameter | Value |
|---|---|
| Shutdown Current | <1μA |
| Quiescent Current | 90μA (Typ) |
| Input Voltage Range | 2.7V to 5.5V |
| Switching Frequency | 1MHz (Typ) |
| Output Voltage Range | 0.6V to VIN |
| Maximum Output Current | 2A |
| Package Width (TSOT25) | 2.80 mm (Typ) |
| Package Height (TSOT25) | 1.00 mm (Max) |
| Package Length (TSOT25) | 2.90 mm (Typ) |
| Operating Ambient Temperature Range | -40°C to +85°C |
Overview
Part: AP3429/A — Diodes Incorporated
Type: 1.0MHZ, 2A Step-Down DC-DC Buck Converter
Description: A 2.7V to 5.5V input, 2A step-down DC-DC converter with 1MHz switching frequency, internal power switch, synchronous rectifier, and no external compensation required.
Operating Conditions:
- Supply voltage: 2.7–5.5 V
- Operating ambient temperature: -40 to 85 °C
- Output voltage: 0.6V to VIN
- Switching frequency: 1 MHz
Absolute Maximum Ratings:
- Max supply voltage: 6 V
- Max junction temperature: +150 °C
Key Specs:
- Regulated Feedback Voltage: 0.588 V (Min), 0.6 V (Typ), 0.612 V (Max)
- Quiescent Current: 90 μA (Typ) at V FB = 0.65V
- Shutdown Current: 0.1 μA (Typ), 1 μA (Max) at V EN = 0V
- Peak Inductor Current: 3 A (Min)
- Oscillator Frequency: 1 MHz (Typ)
- High-side R DS(ON): 110 mΩ (Typ) at I LX = 100mA
- Low-side R DS(ON): 80 mΩ (Typ) at I LX = 100mA
- Input UVLO Threshold: 2.4 V (Typ), 2.7 V (Max)
Features:
- Output Current: Up to 2A
- Output Voltage: 0.6V to VIN
- Input Voltage: 2.7V to 5.5V
- Shutdown Current: <1μA
- 100% Duty Cycle Operation
- 1MHz Switching Frequency
- Internal Soft Start
- No External Compensation Required
- Short-Circuit Protection
- Overvoltage Protection
- Thermal Shutdown
- TSOT25 package
Applications:
- 5V or 3.3V points of load conversions
- Telecoms/networking equipment
- Set-top boxes
- Storage equipment
- Video cards
- DDR power supplies
Package:
- TSOT25
Features
- Output Current: Up to 2A
- Output Voltage: 0.6V to VIN
- Input Voltage: 2.7V to 5.5V
- Shutdown Current: <1μA
- 100% Duty Cycle Operation
- 1MHz Switching Frequency
- Internal Soft Start
- No External Compensation Required
- Short-Circuit Protection
- AP3429: Latch Off Protection
- AP3429A: Hiccup Mode Protection
- Overvoltage Protection
- AP3429: Latch Off Protection
- AP3429A: No Latch Off Protection
- Thermal Shutdown
- TSOT25 package
- Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
- Halogen and Antimony Free. 'Green' Device (Note 3)
- For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.
- https://www.diodes.com/quality/product-definitions/
- Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
- See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free.
- Halogen- and Antimony-free "Green' products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
Applications
- 5V or 3.3V points of load conversions
- Telecoms/networking equipment
- Set-top boxes
- Storage equipment
- Video cards
- DDR power supplies
AP3429/A
Pin Configuration
AP3429AKTR-G1 Pinout
Package: TSOT25
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | EN | I | Enable Control Input |
| 2 | GND | P | Ground |
| 3 | LX | O | Switching Node Output |
| 4 | VIN | P | Input Supply Voltage |
| 5 | FB | I | Feedback Input |
Notes
- AP3429AKTR-G1 is the AP3429A variant in TSOT25 package (5-pin).
- VIN and GND are power pins; EN and FB are signal inputs; LX is the switching output.
- Pin numbering extracted from the TSOT25 package diagram (top view).
Absolute Maximum Ratings
| Symbol | Parameter | Rating | Unit |
|---|---|---|---|
| V IN | Input Voltage | -0.3 to 6 | V |
| V EN | EN Pin Voltage | -0.3 to V IN +0.3 | V |
| V LX | LX Pin Voltage | -0.3 to V IN +0.3 | V |
| V FB | Feedback Pin Voltage | -0.3 to V IN +0.3 | V |
| P D | Power Dissipation (on PCB, T A = +25° C) | 0.4 | W |
| θ JA | Thermal Resistance (Junction to Ambient) | 220 | ° C/W |
| θ JC | Thermal Resistance (Junction to Case, Simulation) | 130 | º C/W |
| T J | Operating Junction Temperature | +150 | ° C |
| T STG | Storage Temperature | -55 to +150 | ° C |
| V MM | ESD (Machine Model) | 200 | V |
| V HBM | ESD (Human Body Model) | 2000 | V |
Recommended Operating Conditions
| Symbol | Parameter | Min | Max | Unit |
|---|---|---|---|---|
| V IN | Input Voltage Range | 2.7 | 5.5 | V |
| T A | Operating Ambient Temperature | -40 | 85 | ° C |
| T J | Junction Temperature Range | -40 | 125 | ° C |
AP3429/A
AP3429/A
Electrical Characteristics (@VIN = 5V, VOUT = 1.8V, L = 2.2μ H, CIN = 22μF , COUT = 22μF×2, TA = +25° C, unless otherwise specified.)
| Symbol | Parameters | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| V IN | Input Voltage Range | - | 2.7 | - | 5.5 | V |
| V FB | Regulated Feedback Voltage | - | 0.588 | 0.6 | 0.612 | V |
| I FB | FB Leakage Current | V FB = 1V | - | - | 0.2 | μA |
| I Q | Quiescent Current | V FB = 0.65V | - | 90 | - | μA |
| I SD | Shutdown Current | V EN = 0V | - | 0.1 | 1 | μA |
| I LIM | Peak Inductor Current | - | 3 | - | - | A |
| V SCP | Short-Circuit Protection Latch Off Threshold | - | - | 0.3 | - | V |
| f OSC | Oscillator Frequency | - | - | 1 | - | MHz |
| R DS(ON) | Drain to Source On-state Resistance | I LX = 100mA, high side | - | 110 | - | mΩ |
| R DS(ON) | Drain to Source On-state Resistance | I LX = 100mA, low side | - | 80 | - | mΩ |
| V ENH | EN High Threshold | - | 1.5 | - | - | V |
| V ENL | EN Low Threshold | - | - | - | 0.4 | V |
| I EN | EN Leakage Current | V IN = V EN = 5V | -1.0 | - | 1.0 | μA |
| V UVLO | Input UVLO Threshold | - | - | 2.4 | 2.7 | V |
| V HYS | UVLO Hysteresis | - | - | 0.2 | - | V |
| - | Maximum Duty Cycle | - | 100 | - | - | % |
| R DSCH | Output Discharge Switch On- Resistance | - | - | 50 | - | Ω |
| T OTP | Overtemperature Protection | - | - | +160 | - | ° C |
| T OTH | OTP Hysteresis | - | - | +30 | - | ° C |
| V IOVP | V IN Overvoltage Protection | - | - | 6.25 | - | V |
| V IHSY | IOVP Hysteresis | - | - | 0.25 | - | V |
| t SS | Soft-Start Time | - | - | 1.8 | - | ms |
Typical Application
Package Information
Please see http://www.diodes.com/package-outlines.html for the latest version.
Ordering Information
| Orderable Part Number | Marking ID | Package | Temperature Range | Packing Qty. | Packing Carrier |
|---|---|---|---|---|---|
| AP3429AKTTR-G1 | L2E | TSOT25 | -40 to +85° C | 3000 | Tape & Reel |
| AP3429KTTR-G1 | L2F | TSOT25 | -40 to +85° C | 3000 | Tape & Reel |
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| AP3429 | Diodes Incorporated | — |
| AP3429/A | Diodes Incorporated | — |
| AP3429A | Diodes Incorporated | — |
| AP3429AKTTR-G1 | Diodes Incorporated | TSOT25 |
| AP3429KTTR-G1 | Diodes Incorporated | TSOT25 |
| AP3429X | Diodes Incorporated | — |
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