Part # LM2696 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM2696 3A, Constant On Time Buck Regulator

Part Details:

LM2696 October 2005 3A, LM26963A, Constant On Time Buck Regulator Constant General Description Features The LM2696 is a pulse width modulation (PWM) buck regu- n Input voltage range of 4.5V­24V lator capable of delivering up to 3A into a load. The control n Constant On-Time loop utilizes a constant on-time control scheme with input n No compensation needed voltage feed forward. This provides a topology that has On n Maximum Load Current of 3A excellent transient response without the need for compen- n Switching frequency of 100 kHz­500 kHz sation. The input voltage feed forward ensures that a con- n Constant frequency across input range T stant switching frequency is maintained across the entire VIN ime range. n TTL compatible shutdown thresholds n Low standby current of 12 µA The LM2696 is capable of switching frequencies in the rangeof 100 kHz to 500 kHz. Combined with an integrated 130 m n 130 m internal MOSFET switch Buck high side NMOS switch the LM2696 can utilize small sizedexternal components and provide high efficiency. An internal Applications soft-start and power-good flag are also provided to allow for n High efficiency step-down switching regulators simple sequencing between multiple regulators. Regulator n LCD Monitors The LM2696 is available with an adjustable output in an n Set-Top Boxes exposed pad TSSOP-16 package. Typical Application Circuit 20153401 © 2005 National Semiconductor Corporation DS201534 Connection Diagram LM2696 Top View 20153402 eTSSOP-16 Package Pin Descriptions Pin # Name Function 1, 2, 3

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LM2696.pdf Datasheet