ST1S40IDR
| Parameters | |
|---|---|
| Min Output Voltage | 800mV |
| Max Duty Cycle | 100 % |
| Max Junction Temperature (Tj) | 150°C |
| Height | 1.75mm |
| Length | 4.9mm |
| Width | 3.9mm |
| Radiation Hardening | No |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
| Factory Lead Time | 10 Weeks |
| Lifecycle Status | ACTIVE (Last Updated: 7 months ago) |
| Contact Plating | Gold |
| Mount | Surface Mount |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154, 3.90mm Width) |
| Number of Pins | 8 |
| Manufacturer Package Identifier | SO8-BW-0016023C |
| Operating Temperature | -40°C~150°C TJ |
| Packaging | Tape & Reel (TR) |
| JESD-609 Code | e4 |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 8 |
| ECCN Code | EAR99 |
| Subcategory | Switching Regulator or Controllers |
| Max Power Dissipation | 1.6W |
| Terminal Position | DUAL |
| Terminal Form | GULL WING |
| Base Part Number | ST1S40 |
| Function | Step-Down |
| Number of Outputs | 1 |
| Output Voltage | 18V |
| Output Type | Adjustable |
| Max Output Current | 4A |
| Operating Supply Voltage | 18V |
| Max Supply Voltage | 18V |
| Min Supply Voltage | 4V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Nominal Supply Current | 1.5mA |
| Output Configuration | Positive |
| Current - Output | 3A |
| Max Output Voltage | 18V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Topology | Buck |
| Control Mode | CURRENT-MODE |
| Frequency - Switching | 850kHz |
| Control Technique | PULSE WIDTH MODULATION |
| Synchronous Rectifier | Yes |
ST1S40IDR Description
An internally adjusted 850 kHz fixed-frequency PWM synchronous stepdown regulator is the ST1S40 device. The ST1S40 controls an output voltage as low as 0.8 V and as high as VIN while operating with an input range of 4.0 V to 18 V.
The ST1S40 incorporates a 69 m synchronous rectifier with a 95 m high side switch, enabling extremely high efficiency at very low output voltages.
A very small solution with a low component count is delivered by the peak current mode control with internal compensation. The ST1S40 comes in three different packages: HSOP-8, VFQFPN 4 mm x 4 mm - 8 lead, and conventional SO8.
ST1S40IDR Features
3 A DC output current
4.0 V to 18 V input voltage
Output voltage adjustable from 0.8 V
850 kHz switching frequency
Internal soft-start
Integrated 95 m? and 69 m? Power MOSFETs
All ceramic capacitor
Enable
Cycle-by-cycle current limiting
Current fold back short-circuit protection
Available in HSOP-8, VFQFPN4x4-8L, and SO8 packages
ST1S40IDR Applications
P/ASIC/DSP/FPGA core and I/O supplies
Point of load for: STB, TVs, DVD
Optical storage, hard disk drive, printers, audio/graphic cards