Texas InstrumentsUnited States
IC REG CTRLR BUCK 14TSSOP
LM3150MH/NOPB is a wide-VIN synchronous buck controller with 6V to 42V input range, up to 1MHz switching frequency, in HTSSOP-14 package, featuring COT control and multiple protection functions.Checked against the datasheet
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Technical parameters
Key specs
TopologyBuck
Outputs1
Input voltage6 ~ 42 V
Switching frequency1 MHz
Datasheet-verified parameters
20 items| Parameter | Value and test conditions | Source |
|---|---|---|
| Topology | Synchronous Buck | |
| Outputs | 1 | |
| Input Voltage Range | 6 V to 42 V | |
| Switching Frequency | up to 1 MHz | |
| Package | HTSSOP (14) | |
| Operating Temperature | -40 °C to 125 °C |
All parameters (22)
| Power | |
|---|---|
| Voltage - Supply (Vcc/Vdd) | 6V ~ 42V |
| AC and DC characteristics | |
| Frequency - Switching | Up to 1MHz |
| Environment and package | |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C~125°C(TJ) |
| Package | Tube |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 14-HTSSOP |
| Other | |
| Base Product Number | LM3150 |
| Clock Sync | No |
| Control Features | Current Limit, Enable, On Time Control, Soft Start |
| Duty Cycle (Max) | - |
| Function | Step-Down |
| Mfr | Texas Instruments |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Product Status | Active |
| Serial Interfaces | - |
| Series | SIMPLE SWITCHER® |
| Synchronous Rectifier | Yes |
| Topology | Buck |
Pinout and package
HTSSOP PWP 14 PINS Top View
| Pin | Name | Function | Source |
|---|---|---|---|
| 1 | VCC: Supply Voltage for FET Drivers, nominally regulated to 5.95 V | ||
| 2 | VIN: Input Supply Voltage, nominal input range is 6 V to 42 V | ||
| 3 | EN: Enable, apply logic high > 1.26 V typ or leave floating to enable, ground to disable | ||
| 4 | FB: Feedback, internally connected to regulation, overvoltage, and short-circuit comparators, regulation setting is 0.6 V | ||
| 5 | SGND: Signal Ground, ground for all internal bias and reference circuitry, should be connected to PGND at a single point | ||
| 6 | SS: Soft-Start, an internal 7.7-μA current source charges an external capacitor to provide the soft-start function | ||
| 7 | RON: On-time Control, an external resistor from VIN to this pin sets the high-side switch on-time | ||
| 8 | ILIM: Current Limit, monitors current through the low-side switch and triggers current limit operation if the inductor valley current exceeds a user defined value | ||
| 9 | SGND: Signal Ground, ground for all internal bias and reference circuitry, should be connected to PGND at a single point | ||
| 10 | SW: Switch Node, switch pin of controller and high-gate driver lower supply rail, a boost capacitor is also connected between this pin and BST pin | ||
| 11 | HG: High-Side Gate Drive, gate drive signal to the high-side NMOS switch, voltage supplied by the differential voltage between the BST pin and SW pin | ||
| 12 | BST: Connection for Bootstrap Capacitor, high-gate driver upper supply rail, connect a 0.33 to 0.47-μF capacitor from SW pin to this pin | ||
| 13 | LG: Low-Side Gate Drive, gate drive signal to the low-side NMOS switch, voltage supplied by VCC | ||
| 14 | PGND: Power Ground, synchronous rectifier MOSFET source connection, tie to power ground plane, should be tied to SGND at a single point | ||
| EP | EP: Exposed Pad, exposed die attach pad should be connected directly to SGND, also used to help dissipate heat out of the IC |
Documents
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