CS51031GDR8 datasheet(3/12 Pages) ONSEMI

No. de pieza	CS51031GDR8

Descripción Electrónicos	Fast PFET Buck Controller

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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CS51031

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ELECTRICAL CHARACTERISTICS (continued) (Specifications apply for 4.5

≤ VCC ≤ 16 V, 3.0 V ≤ VC ≤ 16 V;

Industrial Grade: –40

°C < TA < 85°C; –40°C < TJ < 125°C: Commercial Grade: 0°C < TA < 70°C; 0°C < TJ < 125°C, unless otherwise specified.)

Characteristic

Unit

Max

Typ

Min

Test Conditions

VFB Comparators

VCOSC = VCS = 2.0 V

Regulator Threshold Voltage

TJ = 25°C (Note 3)

TJ = –40 to 125°C

1.225

1.210

1.250

1.275

1.290

V

Fault Threshold Voltage

TJ = 25°C (Note 3)

TJ = –40 to 125°C

1.12

1.10

1.15

1.17

1.19

V

Threshold Line Regulation

4.5 V

≤ VCC ≤ 16 V

–

6.0

15

mV

Input Bias Current

VFB = 0 V

–

1.0

4.0

µA

Voltage Tracking

(Regulator Threshold – Fault Threshold Voltage)

70

100

120

mV

Input Hysteresis Voltage

–

4.0

20

mV

Power Stage

VCC = VC = 10 V; VFB = 1.2 V

GATE DC Low Saturation Voltage

VCOSC = 1.0 V; 200 mA Sink

–

1.2

1.5

V

GATE DC High Saturation Voltage

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

–

1.5

2.1

V

Rise Time

CGATE = 1.0 nF; 1.5 V < VGATE < 9.0 V

–

25

60

ns

Fall Time

CGATE = 1.0 nF; 9.0 V > VGATE > 1.5 V

–

25

60

ns

VCC Monitor

Turn On Threshold

–

4.200

4.400

4.600

V

Turn Off Threshold

–

4.085

4.300

4.515

V

Hysteresis

–

65

130

200

mV

Current Drain

ICC

4.5 V < VCC < 16 V, Gate switching

–

4.5

6.0

mA

IC

3.0 V < VC < 16 V, Gate non–switching

–

2.7

4.0

mA

Shutdown ICC

VCC = 4.0

–

500

900

µA

3. Guaranteed by design, not 100% tested in production.

PACKAGE LEAD DESCRIPTION

PACKAGE PIN

NUMBER

SO–8

PIN SYMBOL

FUNCTION

1

VGATE

Driver pin to gate of external PFET.

2

PGND

Output power stage ground connection.

3

COSC

Oscillator frequency programming capacitor.

4

GND

Logic ground.

5

VFB

Feedback voltage input.

6

VCC

Logic supply voltage.

7

CS

Soft start and fault timing capacitor.

8

VC

Driver supply voltage.

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CS51031GDR8 Datasheet(PDF) 3 Page - ON Semiconductor

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