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Texas Instruments LM3489MM | Demoboard USB-C-PD-DUO-EVM
Hysteretic PFET Buck Controller with Enable Pin
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-35 V |
| Output 1 | 35 V |
Description
The LM3489 device is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost-effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated enable pin provides a shutdown mode drawing only 7 µA. Leaving the enable pin unconnected defaults to on.Current limit protection can be implemented by measuring the voltage across the PFET’s RDS(ON), thus eliminating the need for a sense resistor. A sense resistor may be used to improve current limit accuracy if desired. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.
Features
- Qualified for Automotive Parts
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C5
- Easy-to-Use Control Methodology
- No Control Loop Compensation Required
- Wide 4.5-V to 35-V Input Range
- 1.239 V to VIN Adjustable Output Range
- High Efficiency: 93%
- ±1.3% (±2% Over Temperature) Internal Reference
- 100% Duty Cycle Operation
- Maximum Operation Frequency > 1 MHz
- Current Limit Protection
- Dedicated Enable Pin (on if Unconnected)
- Shutdown Mode Draws Only 7-µA Supply Current
- 8-Pin VSSOP Package
Typical applications
- Automotive
- Battery-Powered Portable Applications, Distributed Power Systems, Always-On Power
- Set-Top Boxes, DSL or Cable Modems, PC/IA, Auto PCs, TFT Monitors
- High-Power LED Drivers
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Application | Interface Type | Type | Working Voltage (V (DC)) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | Pins (Value) (pcs) | Color | Gender | IR (mA) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060GS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 525 | Green | 515 | 430 | 3.2 | InGaN | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | – | – | – | – | – | – | – | SMT | – | – | – | – | 0.7 | – | – | – | – | – | – | – | – | Tape and Reel | ||
 | 74437324100 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LHMI SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | 4020 | -40 °C up to +125 °C | – | – | – | 4.45 | 4.06 | – | 10 | 1.95 | 1.5 | 3.15 | 243 | 23 | SMT | – | – | – | – | 1.8 | – | – | – | – | 2 | – | – | – | – | ||
 | 885012205037 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | 100 nF | ±10% | 16 | 0402 | -55 °C up to +125 °C | 5 | 5 GΩ | X7R Class II | 1 | 0.5 | 0.25 | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
 | 434121025816 | SPEC | – | 5 files | Active i| Production is active. Expected lifetime: >10 years. | WS-TASV SMT Tact Switch 6.0x3.8 mm | – | – | – | – | – | – | – | – | – | 12 | – | -40 °C up to +85 °C | – | 100 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.5 | 160 | 50000 | Black | not specified | – | – | – | 50 | Tape and Reel | |
 | 632723300011 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | THR | USB 3.1 | Type C | Horizontal | 20 | – | – | – | – | – | 24 | – | Receptacle | 5000 | Tape and Reel | |
 | 60900213421 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | 1000 MΩ | – | 2.44 | – | – | – | – | – | – | – | – | – | – | – | – | 250 | – | – | – | – | – | 1 | Black | Jumper | 3000 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 150060GS75000 | SPEC | |
| 74437324100 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 885012205037 | SPEC | |
| 434121025816 | SPEC | – |
| 632723300011 | SPEC | – |
| 60900213421 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Application | Interface Type | Type | Working Voltage (V (DC)) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | Pins (Value) (pcs) | Color | Gender | IR (mA) | Packaging | Samples |
|---|