CS51311GDR14 View Datasheet(PDF) - Cherry semiconductor

Part Name

Description

View to exact match

CS51311GDR14

Synchronous CPU Buck Controller for 12V and 5V Applications

Cherry semiconductor 

Electrical Characteristics: 0˚C < TA < 70˚C; 0˚C < TJ < 125˚C; 9V < VCC < 14V;

2.0V DAC Code (VID4 = VID3 =VID2 = VID1 = 0, VID0 = 1), CGATE(H) = CGATE(L) = 3.3nF, COFF = 390pF; Unless otherwise stated.

PARAMETER

TEST CONDITIONS

s General Electrical Specifications

VCC Monitor Start Threshold

VCC Monitor Stop Threshold

Hysteresis

Start - Stop

VCC Supply Current

No Load on GATE(H), GATE(L)

MIN

7.9

7.6

0.15

TYP

8.4

8.1

0.30

12

MAX

8.9

8.6

0.60

20

UNIT

V

V

V

mA

Note 1: The IC power dissipation in a typical application with VCC = 12V, switching frequency fSW = 250kHz, 50nc

MOSFETs and RθJA = 115°C/W yields an operating junction temperature rise of approximately 52°C, and a junction tem-

perature of 77°C with an ambient temperature of 25°C.

Note 2: Guaranteed by design, not 100% tested in production.

Block Diagram

VOUT

VID0

VID1

VID2

VID3

VID4

VFB

1.1V

-

COMP

EA

PWM COMP

+

-

CURRENT LIMIT

86mV

+

-

-

DISCHARGE

COMP

R

+- 0.25V

Q

FAULT

LATCH

S

COFF

OFF

TIME

DAC

UVLO

VCC

GATE(H)

NONOVERLAP

+

LOGIC

-

+

GATE(L)

-

PWRGD

Gnd

5

Share Link: