CS5151 datasheet(12/14 Pages) CHERRY

部件名	CS5151

功能描述	CPU 4-Bit Nonsynchronous Buck Controller

PDF	14 Pages

Scroll/Zoom	100%

制造商	CHERRY [Cherry Semiconductor Corporation]

网页	http://www.cherrycorp.com/

标志

12 / 14 page

Applications Information: continued

RTRACE =

This causes the output voltage to be +40mV with no load,

and -40mV with a full load, improving regulator transient

response. This trace must be wide enough to carry the full

output current. (Typical trace is 1.0 inch long, 0.17 inch

wide). Care should be taken to minimize any additional

losses after the feedback connection point to maximize reg-

ulation.

7. If DC regulation is to be optimized (at the expense of

degraded transient regulation), adaptive voltage position-

ing can be disabled by connecting to VFB pin directly to the

load with a separate trace (remote sense).

8. Place 5V input capacitors close to the switching MOS-

FET.

Route gate drive signal VGATE (pin 10) with a trace that is a

minimum of 0.025 inches wide.

Figure 18: Layout Guidelines

To the negative terminal of the

input capacitors

100pF

VFFB

OFF TIME

SOFTSTART

VCC

0.1µF

To the negative terminal of the output capacitors

1.0µF

VCOMP

80mV

IMAX

CS5151 数据表(PDF) 12 Page - Cherry Semiconductor Corporation