LM5088MH-2/NOPB Datasheet PDF - TI

●The LM5088MH-2/NOPB is a high-voltage non-synchronous Buck Controller features all the necessary functions to implement an efficient high voltage buck converter using a minimum number of external components. The LM5088 can be configured to operate over an ultra-wide input voltage range of 4.5 to 75V. This easy to use controller includes a level shifted gate driver capable of controlling an external N-channel buck switch. The control method is based upon peak current-mode control utilizing an emulated current ramp. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage/low output voltage applications. The LM5088 switching frequency is programmable from 50kHz to 1MHz. The LM5088-2 provides a versatile restart timer for overload protection.

● Emulated current mode control

● Drives external high-side N-channel MOSFET

● Low IQ shutdown and standby modes

● High duty cycle ratio feature for reduced dropout voltage

● Hiccup timer for overload protection

● Reference accuracy

● Wide bandwidth error amplifier

● Single resistor oscillator frequency setting

● Oscillator synchronization capability

● Programmable soft-start

● High voltage, low dropout bias regulator

● Thermal shutdown protection

● Green product and no Sb/Br

●Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.