CS51031YDR8 View Datasheet(PDF) - Cherry semiconductor

Part Name

Description

View to exact match

CS51031YDR8

Fast PFET Buck Controller Does Not Require Compensation

Cherry semiconductor 

Electrical Characteristics: Specifications apply for 4.5 ² VCC ² 16V, 3V ² VC ² 16V, -40¡C ² TJ ² 125¡C,

unless otherwise specified.

PARAMETER

s Power Stage

GATE DC Low Saturation

Voltage

GATE DC High Saturation

Voltage

Rise Time

Fall Time

TEST CONDITIONS

VCC = VC = 10V; VFB = 1.2V

VCOSC = 1V; 200mA Sink

VCOSC = 2.7V; 200mA Source; VC = VGATE

CGATE = 1nF; 1.5V < VGATE < 9V

CGATE = 1nF; 9V > VGATE > 1.5V

MIN

TYP MAX UNIT

1.2

1.5

V

1.5

2.1

V

25

60

ns

25

60

ns

s VCC Monitor

Turn On Threshold

Turn Off Threshold

Hysteresis

4.200

4.085

65

4.400

4.300

130

4.600

V

4.515

V

200

mV

s Current Drain

ICC

IC

Shutdown ICC

4.5V < VCC < 16V, Gate switching

3V < VC < 16V, Gate non-switching

VCC = 4,

4.5

6.0

mA

2.7

4.0

mA

500

900

µA

Note 1: Guaranteed by design not 100% tested in production.

PACKAGE PIN #

8L SO Narrow & PDIP

1

2

3

4

5

6

7

8

Package Pin Description

PIN SYMBOL

FUNCTION

VGATE

PGnd

COSC

Gnd

VFB

VCC

CS

VC

Driver pin to gate of external PFET.

Output power stage ground connection.

Oscillator frequency programming capacitor.

Logic ground.

Feedback voltage input.

Logic supply voltage.

Soft start and fault timing capacitor.

Driver supply voltage.

3

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